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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korean Acedemy of Dental Technology
Journal Basic Information
Journal DOI :
Korean Academy of Dental Technology
Editor in Chief :
Volume & Issues
Volume 33, Issue 4 - Dec 2011
Volume 33, Issue 3 - Sep 2011
Volume 33, Issue 2 - Jun 2011
Volume 33, Issue 1 - Mar 2011
Selecting the target year
Grindability of Cast Ti-X%Zr(X=10,20,40) Alloys for Dental Applications
Jung, Jong-Hyun ; Noh, Hyeong-Rok ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 263~270
Purpose: The grindability of binary Ti-X%Zr(X=10,20,40) alloys in order to develop a Ti alloy with better machinability than unalloyed titanium has been evaluated. Methods: Experimental Ti-Zr alloys were made in an argon-arc melting furnace. Slabs of experimental alloys were ground using a SiC abrasive wheel on an electric handpiece at circumferential speeds(12000,18000,25000 or 30000rpm) by applying a force(200gr). Grinding rate was evaluated by measuring the amount of metal volume removed after grinding for 1 minute and the volume ratio of metal removed compared to the wheel material lost, which was calculated from the diameter loss (grinding ratio). Experimental datas were compared to those for cp Ti(commercially pure titanium) and Ti-6%Al-4%V alloy were used controls. Results: It was observed that the grindability of Ti-Zr alloys increased with an increase in the Zr concentration. More, they are higher than cp Ti, particularly the Ti-20%Zr alloy exhibited the highest grindability at all circumferential speeds. There was significant difference in the grinding rate and grinding ratio between Ti-20%Zr alloy and cp Ti at any speed(p<0.05). Conclusion: By alloying with Zr, the Ti exhibited better grindability at all circumferential speeds. the Ti-20%Zr alloy has a great potential for use as a dental machining alloy.
Hardness and microstructural changes by cooling rate and holding time during porcelain firing of a multi-purpose dental gold alloy
Cho, Mi-Hyang ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 271~281
Purpose: The aim of this study is to investigate the changes in hardness and microstructure of a dental multipurpose alloy after simulated complete firing with controlled cooling rate and holding time by characterizing the changes in hardness and microstructure after simulated firing with various cooling rates and holding times. Methods: Before hardness testing, the specimens were solution treated and then were rapidly quenched into ice brine. The specimens were completely fired in furnace. Hardness measurements were made using a Vickers microhardness tester. The specimens were examined at 15 kV using a field emission scanning electron microscope. Results: The maximum hardness value was obtained at stage 0 after simulated firing with various cooling rates (quick cooling, stage 0, stage 1, stage 2, stage 3). By the repetitive firing, the hardness of the tested alloy decreased gradually. By holding the specimen at
for 10-20min after simulated firing, the hardness increased apparently. However, to hold the alloy for long periods of time in the relatively high temperature after simulated firing resulted in the formation of thick oxidation layer. The oxide film formed on the surface of the alloy after simulated complete firing with controlled cooling rate, which was mainly composed of O and Zn. Conclusion: It is reasonable to hold the alloy at
for 10-20min after complete firing in other to improve the final hardness of the alloy.
The Study of Flexural Strength of Full Zirconia Crown using Block after Clinical Work
Jung, Hyo-Kyung ; Kwak, Dong-Ju ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 283~289
Purpose: The purpose of this study was to evaluate flexural strength of full zirconia crown using block after clinical work. Methods: The three point bending test was used to measure the flexural strength of zirconia block. Statistical analysis was done using the Statistical Package for Social Sciences version 19.0 for Windows. As for the analysis methods, the study used analysis of variance, Tukey's test. Results: The ave Rage value of flexural strengths of WIELAND, Zirkonzahn, Hass, D-MAX were 516.2 MPa, 612.6MPa, 566.2MPa, 744.6MPa. The ave Rage value of Surface Roughness of WIELAND, Zirkonzahn, Hass, D-MAX were 0.39Ra, 0.33Ra, 0.33Ra, 0.47Ra. Conclusion: Flexural strength of zirconia block decreased after clinical work. Flexural strength of zirconia block is equal to or higher than flexural strength of dental metal, so zirconia block can be used as dental material.
Photopodegradation efficiency of visible light cured dental resin composites with novel photosensitizers
Sun, Gum-Ju ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 291~297
Purpose: The purpose of this study was to know the availability of three photosensitizers, CQ, PD, DA, as a photosensitizer of dental resin composite. We want to know abortion band around visible light region for the using potential possibility as a photosensitizer for visible light cured dental composite resin. And I studied to know the relative photodecomposition ratio of three photosensitizers with or without photoinitiator, DAEM. Methods: The photodecomposition of three photosensitizers were studied by UV absorption spectroscopy in ethanol and determined by same instrument with irradiation time for relative photodecomposition. In order to study the effect of amine on photodecomposition was added the DAEM in the photosensitizer solution and the relative rate was measured by the same procedure with aove mentioned. Results: The all of three photosensitizers are absorbed around visible light region. The relative rate of decrease in absorbance incereased in the order: CQ < BD < PD. The effect of DAEM on the photodecomposition of the photosensitizers was appeared different results without DAEM. The photodecomposition rate of PD and DA decreased somewhat with the addition of amine, while that of CQ increased. The rtealtive photodecomposition rate increased in the oprder: BD
CQ < PD with the addition of amine, but the differnce was not significant. Conclusion: PD and DA like CQ gives to the possibility of use as a photosensitizer for visible light cured dental composite resin by absorption around visible light region and photodecomposition in the maximum absorption wavelength. And it is showed that PD and DA are not effective decomposed with amine initiator, DAEM but CQ decomposed with DAEM effectively. This result may be due to a different mechanism operating for the decomposition of photosensitizers in the presence of amine.
Study about shear bond strength of zirconia core used in dental prosthesis
Sim, Ji-Young ; Kim, Jae-Hong ; Kim, Woong-Chul ; Kim, Hae-Young ; Kim, Ji-Hwan ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 299~306
Purpose: This study aimed to investigate the shear bond strength by manufacturing the veneering porcelain on the IPS e.max
zirconia core, using the layering technique and heat-pressing technique, and to evaluate the clinical stability by comparing to the conventional metal ceramic system. Methods: The Schmitz-Schulmeyer test method was used to evaluate the core-veneer shear bond strength of zirconia core ceramic(IPS e.max
) and their manufacture recommended two veneering ceramic systems(IPS e.max
, IPS e. max
). A metal ceramic system(Bellabond
) was used as a control group for the two all ceramic system test groups. The maximum loading and shear bond strength was measured. The average shear strength(MPa) was analyzed with the one-way ANOVA and the Tukey's test(
=.05). The fracture specimens were examined using Microscope to determine the failure pattern. Results: The mean shear bond strengths(SD) in MPa were MBSB control 43.62(2.13); ZBSB 18.65(1.76); ZPSB 18.89(1.54). The shear strengths of the zirconia cores were not significantly different(P>.05). Microscope examination showed that zirconia specimens presented mixed failure, and base metal alloy specimens showed adhesive failure. Conclusion: There was no siginificant different between the layering technique and the heat pressing technique in the veneering methods on the zirconia cores. None of the zirconia core and veneering ceramics could attain the high bond strength values of the metal ceramic combination.
Mechanical Analysis of Hexagonal Porous Body for Porous Dental Implant
Kim, Nam-Sic ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 307~312
Purpose: The purpose of this study is a porous cube mechanical analysis for the dental implant. Methods: The porous cube with a side length of 10mm was designed for dental implant. To choose proper design, porous hexagon with a side 10mm which was drilled as a regular hexagon with diameter 0.8mm, 1.0mm, 1.2mm and a side 0.4mm, 0.5mm, 0.6mm each using Computer AUTO CAD(Autodesk, 2008). Each cube was carried out in the mechanical analysis. Results: The result of mechanical analysis was observed that the H0.8 was minimum stress 0.045068MPa, maximum stress 9.4565MPa and minimum strain
, maximum strain
, the H1.0 minimum stress 0.001147MPa, maximum stress 9.099MPa and minimum strain
, the maximum strain
, the H1.2 minimum stress 0.099393MPa, maximum stress 13.137MPa and minimum strain
, maximum strain
. Conclusion: The mechanical analysis of porous hexahedron was that H1.0 is the best result. It will be applicable to the porous implants.
The study on the color change according to zirconia core thickness, and build-up technique using spectrophotometer
Huh, Sung-Yoon ; Kim, Jae-Hong ; Son, Ho-Jung ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 313~321
Purpose: The purpose of this study was to compare color parameters of different fabrication method of Lava ceram powder, Lava DVS blocks, IPS e.max ceram and IPS e.max zirpress. Methods: The three available shades(A1, A2, A3.5) of Lava & Kavo zirconia blocks were examined. For each of three colors, three different thickness were tested, 5 times of measurement frequency. The measurements were made using a spectrophotometer equipped with an integrating sphere using the CIE
colorimetric system. Results: Lava build-up group and Lava DVS group showed clinically perceived color difference, on the other hand IPS e.max build-up group and IPS e.max zirpress group did not show clinically perceived color difference to shade allowed on core. When the thickness of porcelain veneer increased from Lava and IPS e.max groups, color differences(
) were decreased. Conclusion: All-ceramic system has color characteristics that clinicians have to consider when selecting materials. Also, manufacturers of different porcelain systems must make every effort to achieve color reproducibility.
Surface Characteristics of the Ground Zirconia
Kim, Sa-Hak ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 323~329
Purpose: This study was conducted to examine the phase transition according to the zirconia surface treatment. Methods: The specimens were divided to four groups. The first group was sintered at
and ground; the second group was sintered at
, ground, and sintered at
; the third group was sintered at
, ground, and
-sandblasted; and the fourth group was sintered at
-sandblasted, treated with 9.5% hydrofluoric acid, and ultrasonic cleaner-washed for two minutes. The monoclinic fractions were measured, and the surface was observed via SEM. Results: The monoclinic fraction was
in the control group Zr1,
in the experimental group Zr2,
in Zr3, and
in Zr4. On the surface, the phase transition hardly occurred in the control group Zr1, but it increasingly occurred in the experimental groups Zr3 and Zr4. Conclusion: The monoclinic fraction was high in the experimental groups Zr3 and Zr4. The phase transition did not occur in the control group, but increasingly occurred in the experimental groups.
Impact of Lumen Size and Helical Coil Place Change in Spring on Orthodontic Force
Lee, Gyu-Sun ; Lee, Sun-Kyoung ; Kim, Bok-Dong ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 331~337
Purpose: The purpose of this study was to impact of force system change in finger spring that add helical coil one round on orthodontic force. Methods: The following conclusions were drawn from the experiment conducted after bending 90 samples with a CNC wire forming machine while changing the height and lumen size to 1mm - 3mm - 5mm and 2mm - 3mm - 4mm respectively in the coil of the force system in finger spring added with one wheel of helical coil of 18-8 stainless steel round wire (
, spring hard) from Jinsung Co. in domestic market under the following conditions: Laboratory name = Instron 5942; Temperature(
) = 18.00; Humidity(%) = 50.00; Rate 1 = 10.00000 mm/min; Compressive extension = 5.0mm. Results: When Coil height is 1, 3, 5mm and lumen size is 2, 3, 4mm reduce finger spring as mean value of compressive extension occasion maximum load(mN) increases as coil height rises, and lumen size grows to 5.0mm. And was expose that compressive load(mN) increases as coil position of finger spring rises and increase as lumen size is decrescent. Conclusion: As the adherence height of coil was raised from 1mm through 3mm to 5mm, compressive load increased. As the lumen size increased from 2mm through 3mm to 4mm, compressive load decreased. Therefore, these results suggest that it is desirable to lower the coil height and enlarge the lumen size to enhance the biomechanical efficiency of finger spring when manufacturing the finger spring for removable orthodontic devices.
The Influence of Surface Treatment and Opaque Application Methods on the Bond Strength of PFM Restorations
Kim, Sung-Min ; Choi, Sung-Min ; Chung, In-Sung ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 339~347
Purpose: This study was investigated the bonding strength of two kinds of Ni-Cr alloy with respect to the condition of surface treatment. Methods: The surface treatment was performed on the two kinds of Ni-Cr alloy (B alloy and R alloy) specimens, which were sandblasted with
aluminium oxide and were treated with opaque application (paste and wash opaque). The roughness on the surfaces of the specimens was observed. The metal-ceramic interfaces were analyzed with EPMA in order to ionic diffusion, and the shear test was performed. Results: The BA250 specimen, which has higher surface roughness, showed the highest bonding strength in B specimens. In R specimens, the bonding strength of RA110 specimen was the highest. Conclusion: B specimen formed a mechanical bond between metal-ceramic interfaces; however, in the case of R specimen, a chemical bond was formed between that interfaces. There was no significant statistical difference between the bonding strengths of two types of specimens (p>0.05).
The Influence of Bonding Strength and Interface Characteristics to Bonding Agent and Veneer Ceramics on Metal-Ceramic Prosthetics
Kim, Min-Jung ; Choi, Sung-Min ; Chung, In-Sung ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 349~357
Purpose: In this study, for the reasons of observing the changes when using bonding agent with Ni-Cr alloy and Co-Cr alloy and using VM13 and Vintage MP ceramic which have the disparity in coefficient of thermal expansion, it is carried out to evaluate the characteristics of the bonding agent through the analysis of the interface between metal and ceramic and the analysis of bond strength by variable. Methods: The surface treatment was performed on the two kinds of alloy(Ni-Cr alloy and Co-Cr alloy) specimens, which were sandblasted and were treated with bonder application. The metal-ceramic interfaces were analyzed with EPMA in order to ionic diffusion, and the shear test was performed. Results: As a result of observation of metal-ceramic interfacial properties, it was observed that Cr atoms were spread from the alloy body to the ceramic floor in the specimen of Group B. It was also seen that Cr, W atoms were spread from the alloy body to the ceramic floor in the specimen of Group S. In consequence of observing Shear bond strength, it was calculated that the specimen of BSV was 27.75(
)MPa, BSM was 27.02(
)MPa, BCV was 30.20(
)MPa, BCM was 27.94(
)MPa, SSV was 20.83(
)MPa, SSM was 23.98(
)MPa, SCV was 32.32(
)MPa, and SCM was 34.54(
)MPa. Conclusion: In the metal-ceramic interface of Bellabond plus sample group, diffusion of Cr atoms was incurred and diffusion of C Cr atoms and W atoms in the sample group of
was observed. Using bonding agent showed the higher bond strength than using the sand blasting treatment. In the Bellabond plus alloys, the specimen group with the use of binding materials showed higher shear bond strength, but didn't show statistically significant differences (p>0.05). In the
alloys, the specimen group with the use of binding materials showed higher shear bond strength and statistically significant differences(p<0.05). In terms of VM13 ceramic, it was in the Bellabond plus alloys that the high shear bond strength was showed, but there's no statistically significant differences(p>0.05). In terms of Vintage MP ceramic, it was in the
alloys that the high shear bond strength was showed and statistically significant differences(p<0.05). Metal-ceramic to fracture of the shear strength measurements and an analysis of all aspects of military usage fracture of the composite, respectively.
A Study of Educational Satisfaction of the Students in Health Section and None Health Section based on 'D' college
Park, Myung-Ho ; Lee, Hee-Kyung ; Kim, Sang-Yeoun ; Kwon, Sun-Il ; Jun, Sung-Hee ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 361~368
Purpose: This study is to analyze the curriculum satisfaction and to provide basic information for effective school management of Dept. of Health section. Methods: This survey, modified questionnaires based on Hee-Joo Moon's(2005), is accordance with undergraduate students and shows very high credibility upper than Cronbach's Alpha. 1,500 questionnaires are distributed(01. Oct. 2010~30. Oct. 2010) but only 1,213(80.8%) are returned and, except for 14 insincerely answered, 1,199(79.9%) are used. Results: The results of the study are following. The population characteristic of this survey is that 445(18.1%) are male, 739(61.9%) are female, 595(49.6%) are in health section, and 604(50.4%) are in none health section. 628(53%) chose getting jobs as their motivations for school choice and 727(60.8%) chose getting jobs and career guidance as theirs. The satisfaction of male students was higher than that of female students based on the comparative analysis of the curriculum satisfaction. The satisfaction of the students in none health section was higher than that of those in health section based on the comparative analysis of the curriculum satisfaction. This survey indicates that once the satisfaction with the major courses and career guidance increase, the overall satisfaction grows. Conclusion: The keys to improve the curriculum satisfaction including students' in department of dental technology are to provide and develop differentiated curriculums and support programs that meet students' expectations. In addition, the customized curriculums based on the level and aptitudes of female students are needed.
A Study on the Actual Condition of Dental Prosthesis of the Elderly in Seoul and Gyeonggi-do
Lee, Tae-Jung ; Jung, Jung-Ock ; Lee, Kyeong-Hee ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 369~378
Purpose: This study was carried out for the purpose of obtaining basic data necessary for developing the future oral health promotion program of the elderly by surveying the actual condition of managing dental prosthesis in the elderly. Methods: It collected materials targeting 346 elderly brackets in over 65 years old who dwell in Seoul and Gyeonggi-do Province for about 10 months from September 2010 to June 2011, analyzed 312 copies except 34 copies, which are inappropriate for data processing due to being insufficient in response among these things, and obtained the following results. Results: In the actual condition of missing tooth, a case of missing tooth was indicated to be 78.8%. In case of missing tooth, the number of missing teeth was indicated to be 75.6% for under 5 pieces and 19.1% for over 21 pieces. In the actual condition of managing prosthesis, a case with dental prosthesis treatment was indicated to be 77.6%. A kind of prosthesis was indicated to be the highest in fixed partial dentures with 36.5%. In a method of rinsing dentures, 47.7% of the elderly responded as saying of washing it out with water. The appearance of removing dentures at night was indicated to be the highest in doing so with 63.1%. Satisfaction with prosthesis of being mounted now was indicated to be moderate with 50.4%. As for the appearance of having experience of education on how to manage prosthesis, it was indicated to be high with 50.4% in having none. In a kind of prosthesis depending on averagely monthly income, the ratio of total dentures was high when averagely monthly income is low. On the other hand, a case with high income was indicated to have high ratio in implants. The satisfaction with prosthesis was low when averagely monthly income is low. Also, in the experience of education on how to manage prosthesis, the ratio of responses as saying of having no experience of education on how to manage prosthesis was indicated to be high when averagely monthly income is low. Conclusion: Examining the above results, a developmental plan is considered to be necessary such as developing continuous and systematic oral health promotion program for managing elderly people's managing dental prothesis.
A Study on Working conditions and Characteristics of Dental Technicians
Song, Jae-Sang ; Hong, Young-Ho ; Choi, Sang-Jun ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 379~390
Purpose: This study was conducted to improve the working conditions of dental technicians, through survey for working conditions related to perform one's duty, the extent of personal exposure to substances hazardous and complaint rate and factor of job stress and subjective symptom on musculoskeletal disorders. Methods: Using four types of structured questionnaires: social and demographic factor; the actual conditions of working space; working conditions; and characteristics of dental technicians, respondents filled in the questionnaires and the results were analyzed statistically. Results: The evaluation of comfort in working place found that satisfaction level on indoor noise was the lowest with 2.6 on a five-point scale and privacy space followed 2.8 point. In reasons for dissatisfaction with job, over workload ranked the highest by 25.4% and role overload had the highest by 39.5% in job stress factors. Based on the results, we could draw conclusion that dental technicians were unsatisfied with role overload and heavy workload a day. In reasons for musculoskeletal symptom prevalence, long-patient work was the highest by 24.1%. It was thought to cause dental technicians need deep procession and long-patient work due to the nature of their job. Conclusion: In conclusion, noise reduction and privacy space are required to improve job efficiency of dental technicians. In addition; we need to think of ways to increase the job satisfaction with adequate rest while deep procession and long-patient working.
The Effects of Oral Health Belief of Elderly on Oral Health Impact Profile in Daegu, Gyeongbuk Region
Park, Myung-Ho ; Lee, Mee-Sook ; Lee, Hee-Sung ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 391~402
Purpose: The purpose of this study was to investigate the factors affecting oral health impact profile. Methods: Subjects included elderly in the metropolitan areas of the cities of Daegu and Gyeong-buk. Statistical analysis was done using the Statistical Package for Social Sciences version 19.0 for Windows. We determined frequencies and percentage, calculating means, and standard deviations, and determining statistical significance using T-tests, analysis of variance, multiple regression analysis. Results: The results of multiple regression analysis between the oral health impact profile and the related factors indicated that Occupation, Economic status are the major component oral health impact profile in general characteristics and the Impediment of oral health promotion behavior is the major component that contribute the oral health impact profile in oral health belief. Conclusion: The comprehensive and reliable research which measures oral health impact profile of elderly is necessary.
A Study on the Health Promotion Behavior of Dental Technology Students (The case of Gyeonggi province)
Sung, Hwan-Kyung ; Lee, Sun-Kyoung ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 403~411
Purpose: The purpose of this study was to examine the health promotion behavior of dental technology students. Methods: The subjects in this study were 255 dental technology students in three different colleges in Gyeonggi province. A survey was conducted from April 1st to June 30th 2011, and the collected data were analyzed with SPSS 12.0 program. Results: Dental technology students thought that subjective health is good(89.0%). When was health bad, expose that nutrition, health responsibility, life appreciation, exercise, stress management and oral health care are low(p<0.05). Education level of mothers that oral health care of children is low examine. When inhabit with family was expose that nutrition and oral health care go well(p<0.05). When get social support, respect of life appeared high. As respect of life is high, stress administration went well. As health responsibility is high, nutrition went well, and did well oral health care as health responsibility is high(p<0.01). Conclusion: Recognize importance of health to an university students, and it is very important to do it as form desirable habit.
Factors Influencing the Dental Health and Living Quality of the Elderly With Physical Debilities
Park, Nam-Gyu ; Kim, Han-Gon ; Kim, Jin-A ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 413~425
Purpose: This study conducted a survey on the elderly with physical debilities, who are in a medically vulnerable social class, to examine closely their demo-sociological characteristics, unmet needs, dental states, and living qualities and satisfaction levels relating to oral health and social supports to them, and also to prepare the basis for effective public medical policies and health improvement programs aimed at improving the quality of life for the elderly with physical debilities. Methods: Twenty-two elderly care facilities within Jeju Special Self-Government Province participated in the survey. Between 11 January and 5 March 2010, a total of 250 elderly persons(65 and over) with physical debilities were interviewed and their dental health was checked. Results: The results of the survey are as follows. The need for social support for dental care of the elderly with physical debilities was high in the medical institution-supported service (49.6%). The unmet needs for physical care were high in bathing (49.6%) and using public transportation (71.6%). More than half of these surveyed had ten or fewer teeth. The survey found that 31.6% of the participants experienced problems eating, due to poor dental health. Concerning quality of life, 30.5% of those surveyed experienced physical pain. Conclusion: In summary, the ages of the survey participants directly relates to the degree of behavioral debility experienced. The more debility a participant exhibits, the greater is the need for social support and dental care. The dental health of a participant directly relates to a higher quality of life. Good dental health of a participant translate to better quality of life. In light of the fact that the elderly with physical debilities suffer from a lack of accessibility to medical care and worse oral health than do other elderly persons, it is essential to increase accessibility to medical institutions that can provide such services as door to door dental care. Current insurance policies, funding for denture insurance, and free denture and denture-upgrade programs desperately need to be expanded. Therefore, to improve effectively the quality of life for the elderly with physical debilities civil dental medical resources should be encouraged to provide inclusive and prevention-focused medical care. In the public domain, door to door dental care services and cooperation with civil dental care resources need to be improved to increase impartial accessibility to dental medical institutions.
Research on the major selection and the career decision of college students (Centering on students studying Dental Technology in D-College)
Lee, Hwa-Sik ; Bae, Bong-Jin ; Chang, Ki-Whan ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 427~440
Purpose: The following research analyzes the causes of major selection and career decision of students studying dental technology. It is to be used as basic data for the management of career improvement program. Methods: The survey has been processed to 490 college students studying Dental Technology in D-college. Questionnaire consists of major selection confidence sheet (14 items) and career decision confidence sheet (18 items) and was scored with 5-points per question. The collected data was analyzed by the statistical program: SAS V8 for Windows. To test for significance on each item, p < 0.05 has been decided as a standard. Results: The analysis of result about the level of confidence on major selection has valid difference by genders, serving military service or not, experience of studying one more year to enter the college or not, making career decision and grade. The analysis of result about career decision has valid difference by gender, serving military service, career decision, day and night course, age and native place. Conclusion: We develop the career advice program and manage it effectively, the confidence on the major selection and pride about its faculty will be high to dental technology students.
Factors of the Quality of Dental Care Service Upon Intention to Revisit
Park, Young-Dae ; Jang, Eun-Jin ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 441~452
Purpose: Identify the factors that influence following up control and reuse intention of patient who used dental health care institution after dental heath care service and in order to prepare the method which improve the quality of dental health service which dental heath care institution service afford. Methods: Data were collected through random sampling from June 20th to August 20th 2010 (for 60 days). Once we explained the purpose of our survey to people who experienced the dental service within one year, we distributed the questionnaires to someone who volunteered to respond and they answered all questions by themselves based on the actual experience of dental health care organizations. Even if the survey was conducted for 610 people, only 585 properly answered questionnaires were analyzed because responses which had many unanswered questions and had errors in responsive way were excluded. Results: Result of multiple regression analysis, the value of dental clinic service, the following up control after dental treatment, the technique and kindness of dentist, the environment of treatment, type of dental service and the kindness of dental staff is significant main cause to intention of reuse dental clinic. Conclusion: In order to increase the rate of patient reuse, enhance the value of service with following up control after health treatment and the high quality of dental health service.
Factors affecting job stress and physical symptoms of dental technicians in Daegu Metropolitan City
Lee, Deog-Su ; Kim, Chang-Yoon ; Lee, Kyeong-Soo ; Hwang, Tae-Yoon ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 453~466
Purpose: This study aims to investigate the general characteristics of dental technicians and their health behaviors and to analyze the related factors of their work stress and physical symptoms. Methods: The survey used structured self administered questionnaires for a survey targeting 741 members registered of the Dental Technician Association in Daegu Metropolitan City from September to October, 2009. Total of 518 replies and analyzed 490 questionnaire excluding 28 incomplete questionnaires. Results: The work stresses were higher in those who answered that they were under 30-years old, unmarried, lower in rank, or had longer work hours, lower monthly incomes or poor self-perceived health status. In addition, those who worked in a dental laboratory with poor work environment including insufficient ventilation, sand blaster with no powder collecting functions, etc., tended to experience higher work stress than others due to their work conditions. The total average of the respondents of the survey who answered that they suffered from some physical symptoms was 14.7 points. It was found that the factors affecting the score of physical symptoms include occupational features such as work hours, monthly income, etc., and physical work environment such as the presence or absence of ventilator, of dust-collectors within sand blaster, etc., and work stress, exerted significant influence. Conclusion: The outcomes of this study indicates that to lessen work stress and to ultimately alleviate physical symptoms, it is necessary to do the following: improve work environment of young unmarried women; adjust their daily working hours; ameliorate physical work environment. To improve overall physical symptoms, it is importance to establish a safe and healthy working environment.
The Influence of the Job Environment and Health Condition of Dental Technicians
Kwon, Eun-Ja ; Han, Min-Soo ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 467~478
Purpose: The purpose of this study was to analyze dental technician's job environment and health condition level and to examine its correlation. Methods: 250 dental technicians in Seoul, Incheon, and Jeonbuk area were selected. Survey was carried out from October 11, 2010 to November 25, 2010 by using self-administered questionnaire. As for the tools for this study, the structured questionnaire was used with its proven reliability and feasibility, and the questionnaire consisted of total 49 questions which included general attribute of subjects(14 questions), job Environment(13 questions) and health condition(22 questions). The data analysis was processed by computerized system with SPSS Win 17.0. Statistical analysis techniques included frequency, percentage, T-test, One-way ANOVA analysis and regression analysis. Results: As a result of analyzing the research subjects' job environment level, there was significant difference in the item of gender, working hours a day(Hour), healthy condition, job satisfaction level with dental technician, plan for task continuity in dental technician(P<0.05). The average in the job environment was indicated to be high with 2.85. As a result of analyzing the research subjects' health condition level, there was significant difference in the item of gender, task field, working hours a day(Hour), healthy condition, job satisfaction level, plan for task continuity(P<0.05). The average in the self health recognition was indicated to be high with 2.83. Conclusion: Correlation between job environment and health condition, all of variables were indicated to have reverse correlation, thereby having been shown that the worse job environment leads to the more physical subjective symptoms.
The research on the Career Plan of the Dental Technology Students (Revolve Around D College Students)
Bae, Bong-Jin ; Lee, Hwa-Sik ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 479~493
Purpose: The career education of the college student needs a new awareness. This research provides fundamental data from analyzing necessities of student's career education according to plans of a career education. Methods: Make use of SAS 8.0 of windows and descriptive statistics analysis on investigate Dental Technology 570 students in Daegu. And also it analyzes difference of ispectable t-test and ANOVA. Results: According to a gender, a job experience, where they are come from, there is a meaningful difference of an information and an entrance motive for choosing a major (<.05). The time of choosing the major are different meaningfully (<.001). An awareness about the method of a career achievement is a meaningful difference between men and women(<.05). As getting old, the method of a career achievement is higher and there are meaningful differences according to a grade, job experience and a entrance screening(<.01). In accordance with a gender, a grade, entrance screening, there are meaningful differences of a degree for obtaining the career information activities(<.01). In accordance with an age, when they choose a major, there is a difference(<.001). In accordance with a gender and a age, there are meaningful differences of a career plan(<.001). The age difference is slight. In accordance with a gender and a age, there are meaningful differences how to effort for the career(<.001), and also according to an entrance screening, an entrance motive(<.05). These mean that the first priority for choosing the career and going into the world is a school record. There are meaningful differences of people that the student choose for consulting the career(<.01). According to the job experience there are meaningful differences(<.001). Conclusion: By investigating and analysing the student's career plan, we need to seek how students choose their career reasonably and desirably. And also we need to teach a career education systematically.
Correlation study of the oral health knowledge, attitude and behavior in the high grade students of elementary school in some regions of the metropolitan
Kim, Seok-Hwan ; Kim, Jae-Hong ; Kim, Ji-Hwan ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 495~503
Purpose: The purpose of this study was to obtain data that can be utilized in the planning of oral health education plan, by surveying the correlation between oral health knowledge, attitude, and behavior among high grade students elementary school in some regions of the metropolitan. Methods: The subject of this study through the survey of the recognition of the oral health, a questionnaire survey was conducted for 548 male and female students who were in the 4th, 5th, 6th grade of elementary school in some regions of the metropolitan. Statistical analysis was conducted using the SPSS 12.0 with t-test, ANOVA, and correlation. Results: Knowledge of oral health was very high. Correct attitudes and positive behavior were indicated. There was a significant difference in oral health knowledge according to school year and parents' dental condition(P<.05). The student one recording oral health behavior degree where the oral health knowledge is high appears highly, considers statistically the difference which it was visible. Positive correlation was significantly observed among oral health knowledge, attitudes, and behavior. Especially, attitudes and toothbrush method were highly correlated(r=.853). Conclusion: Oral health program through the elementary school students and their parents for the development of proper oral health care education programs continue to be made should be considered.
Research on the Job Image of the Students of the Department of Dental Technology for their Job as Dental Technician (Focused on Daegu)
Choi, Ju-Young ; Kim, Han-Gon ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 505~516
Purpose: The purpose of this study is to supply basic data to establish new image for dental technicians by reflecting onto the education of dental technicians by grasping the image of dental technicians with the subjects of students in department of dental technology. Methods: It was studied with self-filling-in method through structured questionnaire from September 26, to October 21, 2011, with 421 subjects of the students in the department of dental technology in two colleges in Daegu. SPSS 18.0 for Windows was used to analyze the data, and frequency and percentage were used for statistic analysis, and correlation analysis and Multiple Linear Regression Analysis were used with mean and SD per each question. Results: It showed the highest recognition that the dental technicians is a 'specialist' as 4.66; the dental technicians has strong responsibility in his work as 4.42; the dental technicians takes an important role in improvement of public oral health as 4.39; and the dental technicians has professional intelligence and high technique as 4.33. So, it was found that they had image of professional and important role for oral health, and had their pride and selfconfidence as future dental technicians. Meanwhile, it showed that they had negative related-image as well as a job, that the dental technicians is too busy as 4.48; it requires improvement on image in the future as 4.27; it is a hard job with too much stress as 4.13. Conclusion: It is required for us and school to have continuous change and effort to make the students in the department of dental technology have positive mind for the dental technology to make them have pride for their job.
A study of the daily life satisfaction of the dental technicians
Kwon, Soon-Suk ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 517~528
Purpose: In this study, we aim to provide fundamental database for the development of programs that will enhance the satisfactions of the dental technicians' daily life. To this end, we examined various factors that affect the subjects' social and emotional life satisfactions and their overall daily lives. Methods: Out of the random selection of the registered dental offices of Dental Technicians in Seoul, Gyeonggido, and Gangwon-do districts. Four hundred working dental technicians were asked to fill out the questionnaire from the 1st of June to the 25th of August, 2011. We collected the 355 sheets of the questionnaire and took frequency analysis, t-test, analysis of variance and structural equation modeling using SPSS Win 12.0 program. Results: The results of this study is as follows; Firstly, social satisfaction of the subjects turned out 3.71 on average, emotional satisfaction and daily life satisfaction in general were shown 2.77 and 3.19 respectively. Secondly, Age(p<.05), Career(p<.001), Working environment satisfaction(p<.001) showed significant differences in social life satisfaction area, whereas monthly earning(p<.05), working environment satisfaction(p<.001) revealed meaningful differences in the domain of emotional life satisfaction. Thirdly, in the overall satisfaction of daily lives, monthly earning(p<.05), career(p<.01), working environment satisfaction(p<.001) indicated significant difference. Conclusion: Seen from the results of this study, we purport to develop a variety of programs for better working conditions and to further research on the variables affecting the dental technicians' satisfaction of daily lives.
Factors influencing Turnover Intention and job satisfaction of dental technician in Daegu, Gyeongbuk Region
Kim, Jeong-Sook ; Lee, Jong-Do ; Park, Kwang-Sig ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 529~538
Purpose: The purpose of this study was to investigate the factors affecting turnover and job satisfaction, to reduce turnover rate of dental technician. Methods: Subjects included dental technicians in the metropolitan areas of the cities of Daegu and Gyeong-buk. Surveys were filled out by consenting dental technicians. Statistical analysis was done using the Statistical Package for Social Sciences version 18.0 for Windows. We determined frequencies and percentage, calculating means, and standard deviations, and determining statistical significance using t-tests, analysis of variance. Results: Job satisfaction showed differences in General characteristics associated with gender, age, monthly salaray, education. Turnover intention showed differences in General characteristics associated with age, monthly salaray. Job satisfaction showed differences in dental laboratory characteristics associated with Career, Working time. Turnover intention showed differences in dental laboratory characteristics associated with working time. Conclusion: In order to reduce turnover rate of dental technician, Job satisfaction of dental technicians have to find ways to improve. The comprehensive and reliable research which measures job satisfaction of dental technician is necessary.
Current clinical treatment condition and clinical dental practice Disease of Oral cavity, Salivary glands and Jaws inpatients over one-hundred bedsite hospital in recent 5years (2004-2008) (Using Korean National Hospital Discharge Injury Survey 2004-2008)
Choi, Gyu-Bum ;
Journal of Korean Acedemy of Dental Technology, volume 33, issue 4, 2011, Pages 539~550
Purpose: The aim of this study was to investigate distribution of the admitted patients with disease of oral cavity, salivary glands and jaws, current clinical treatment condition and clinical dental practice. Methods: The subject were 4,564 patients with disease of oral cavity, salivary glands and jaws of the Korean National Hospital Discharge Injury Survey 2004-2008 data. This study was carried out using the administrative database including patients' characteristics and comorbidity. The statistical analysis for ratio, gender, age, region, primary diagnosis, comorbidity, operation, hospital location and bed size of inpatients in Korean National Hospital Discharge Injury Survey was conducted by frequency analysis. Results: Among the total discharge injury patients in 2004-2008, the trend showed decrease of ratio of patients with disease of oral cavity, salivary glands and jaws. The portion of male was higher than female, and 20~29 age group was the highest portion compared with other age groups. Seoul-Gyunggi region was the highest among the other residences. patients with Dentofacial anomalies[including malocclusion] as primary diagnosis, digestive system as comorbidity and operations on facial bones and joins showed the highest portion respectively. Seoul-Gyunggi region was the highest portion compared with other residences. 500~999 bed size showed the highest portion. Conclusion: In this study showed that distribution of patients with disease of oral cavity, salivary glands and jaws, current dental clinical treatment condition using the Korean National Hospital data.