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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Dental Rehabilitation and Applied Science
Journal Basic Information
Journal DOI :
Korean Academy of Stomatognathic Function and Occlusion
Editor in Chief :
Volume & Issues
Volume 29, Issue 4 - Dec 2013
Volume 29, Issue 3 - Sep 2013
Volume 29, Issue 2 - Jun 2013
Volume 29, Issue 1 - Mar 2013
Selecting the target year
The Effect of Occlusal Condition on Physical Fitness and Motor Capacity in Athletes According to Various Types of Mouthguards
Choi, Su-Jeong ; Jung, Jae-Kwang ; Lee, Kyu-Bok ; Chae, Woen-Sik ;
Journal of Dental Rehabilitation and Applied Science, volume 29, issue 1, 2013, Pages 1~9
DOI : 10.14368/jdras.2013.29.1.001
This study examined the effects of the occlusal stability and a partial coverage mouthguard on physical fitness and motor capacity to determine the importance of the occlusal stability as a possible action mechanism of mouthguards on physical performance. Twenty physical education students were included for measurements of their handgrip strength, back strength, whole body reaction time, flexibility, sidestep test, stork stand test and jumping test according to the following 5 different occlusal conditions: mouth closed position without a mouthguard, with a full coverage mouthguard, with a right partial coverage mouthguard, with a left partial coverage mouthguard and with anterior partial mouthguard. The results revealed no significant difference in any of the measured physical factors between the occlusal conditions with and without a full-coverage mouthguard. On the other hand, a significant difference was observed in whole body reaction between the occlusal conditions with and without the partial coverage mouthguards. Therefore, isokinetic muscle tests on both knee joints and the Wingate anaerobic power test should be performed under the following five occlusal conditions: with or without full-coverage maxillary custom-made mouthguard, with a unilateral right or left partial-coverage maxillary mouthguard and with an anterior partial-coverage maxillary mouthguard. These results suggest that the partial coverage mouthguard had a short-term beneficial effect on agility rather than full coverage mouthguard.
A Comparison of the Implant Stability Among the Bone Density Groups: Prospective Study
Ko, Sok-Min ; Park, Seong-Jae ; Lee, In-Kyung ;
Journal of Dental Rehabilitation and Applied Science, volume 29, issue 1, 2013, Pages 11~21
DOI : 10.14368/jdras.2013.29.1.011
The purpose of this study was to get a proper time when implant was loaded and superstructure was fabricated by tracing a change of the implant stability in bone type for 1 year. We carried out RFA(resonance frequency analysis) of 67 implants in 36 patients at the time of surgery, 2, 6, 10, 14weeks, and 1year postoperatively for each implant, and analyzed data for different bone density. The ISQ value at the time of 10 & 14weeks postoperatively were significant(P<0.01) in subjective grouping, while that were not significant in objective grouping(P>0.05). The change pattern of ISQ value could be expressed
for 1 year in this study, ISQ value at surgery might be used to estimate the time of superstructure fabrication consequentially.
Evaluation of the Volume Changes of Grafted Bone Materials in Sinus Augmentation Procedure Using Dental Cone-beam CT
Ohn, Byung-Hun ; Seon, Hwa-Kyeong ; Chee, Young-Deok ;
Journal of Dental Rehabilitation and Applied Science, volume 29, issue 1, 2013, Pages 23~36
DOI : 10.14368/jdras.2013.29.1.023
To evaluate the 3-dimensional features of the grafted bone with maxillary sinus augmentation and to assess the relation between the degree of bone resorption and the type of bone grafting source and implant, and the operation method. A retrospective chart review of patients receiving sinus augmentation procedures for implant positioning was conducted: radiographic analysis of the volume and area of bone grafts was performed. The volumetric remodeling.measured at 6 months after implant positioning as the percentage of residual bone graft.was correlated to type of graft materials and operation methods. 53 dental implants positioned with sinus bone graft in 15 patients at Wonkwang University Sanbon Dental Hospital. Computed tomography scans,taken implant positioning after 6 months, showed greater resorption values for the group of
graft alone from the group of mixed with
and various bone graft (P<0.05, respectively). And resorption values according to operation methods have statistically significant difference(P<0.05). Volume change ratio of bone graft showed greater values for the group of delayed implant position from the group of simultaneously implant placement with bone graft. Retrospective data analysis shows that the method of graft with
alone may occur greater resorption of graft materials than mixed graft material with
and other graft materials. The group of simultaneously implant placement with bone graft also display smaller resorption ratio of bone graft than the group of delayed implant placement.
Influence of Sodium Hypochorite & EDTA on the Microtensile Bond Strength of Ethanol Wet Bonding
Kim, Deok-Joong ; Song, Yong-Beom ; Park, Sang-Hee ; Kim, Hyoung-Sun ; Lee, Hye-Yoon ; Yu, Mi-Kyung ; Lee, Kwang-Won ;
Journal of Dental Rehabilitation and Applied Science, volume 29, issue 1, 2013, Pages 37~44
DOI : 10.14368/jdras.2013.29.1.037
Sodium hypochlorite and ethylene diamine tetra acetic acid are substances usually used during endodontic treatment. Several studies found that the bonding was negated with certain irrigants and some of the used irrigants have demineralizing and chealating effects, so it was advocated to omit the etching step in etch and rinse adhesive systems. The purpose of this in vitro study was to evaluate the influence of NaOCl & EDTA on the bonding strength of ethanol wet bonding. Thirty human molars were selected and mesiodistally sectioned into halves, thus providing sixty specimens. The specimens were randomly assigned to 4 groups(n=15) according to the irrigant regimen used : (1) irrigated with distilled water for 10min (control); (2) irrigated with 5.25% NaOCl(10min), flushed with 5.25% NaOCl(1min) (3) irrigated with 5.25% NaOCl, flushed with 17% EDTA (4) irrigated with 5.25% NaOCl, flushed with 17% EDTA. Each group was acid-etched with 37% phosphoric acid(except group 4) and had their dentin surfaces dehydrated with ethanol solutions : 50%, 70%, 80%, 95%, 3x100%, 30s for each application. After dehydration, a primer( 50% all bond 3 resin + 50% ethanol) was used, followed by the adhesive(ALL-BOND 3 RESIN) application. Resin composite build-ups were then prepared using an incremental technique. Specimens were sectioned into beams and submitted to a tensile load using a Micro Tensile Tester(Bisco Inc.). The data were statistically analyzed using one-way ANOVA and Tukey HSD at p<0.5 level. There was no significant difference on G1(control) and G2(irrigated with NaOCl only ). (p>0.05). G3(flushed with EDTA) showed significantly high tensile bonding strength compared to the G2 (p<0.05). G4( treated with EDTA but no acid-etching) was significantly lower value than G3. (p<0.05) Although there was no significant difference, 5.25% NaOCl seemed to have an adverse effect on the bonding strength of ethanol wet bonding. The flushing with EDTA after NaOCl irrigation prevents the decrease of bonding strength. The use of 17% EDTA as a final flush can enhance the bonding strength but EDTA flushing can't substitute for a acid-etching.
Analysis of Occlusal Contacts Using Add-picture Method
Park, Ko-Woon ; Cho, Lee-Ra ; Kim, Dae-Gon ; Park, Chan-Jin ;
Journal of Dental Rehabilitation and Applied Science, volume 29, issue 1, 2013, Pages 45~58
DOI : 10.14368/jdras.2013.29.1.045
The purpose of this study was to analyze the area of occlusal contact points using visual method. One subject was selected who had Angle Class I, normal dentition, without dental caries, periodontal disease and temporomandibular disorders. Forty times PVS impressions were taken and 10 pairs casts were fabricated using dental super hard stone. After mounting the casts with customized loading apparatus, 78.9kg/f force was loaded as a maximum biting force. In T-Scan method, occlusal contact points measurement was repeated twice. Then, using Photoshop program (Adobe photoshop CS3, Adobe. San Jose, USA), the pixels which indicated occlusal contact points by color was recognized, and the distribution of recognized pixels were calculated to area. In Add picture method, polyether bite material applied to the occlusal surface of the casts. Then, the image of the translucent areas was recorded and classified
area by the amount of transmitted light. To acquire occlusal surface, the numbers of pixels from the photograph of the contact area indicated cast converted to
. The mean occlusal contact area by two methods was statistically analyzed (paired t-test). Part of the red and pink area in T-Scan image were almost equivalent to the
area in Add picture image. The distribution of occlusal contact points were similar, but the average area of occlusal contact points was wider in T-scan image (P<.05). Pink and red area in T-scan image was wider than
area in Add picture image (P<.05), but similar to
area in Add picture image (P>.05). Occlusal contact points in T-scan image did not indicate real occlusal contact points. Occlusal contact areas in T-scan method were enlarged results comparing with those in Add picture method.
Pattern Analysis of Occlusal Contacts During Lateral Excursion Using T-scan III System
Lee, Sang-Min ;
Journal of Dental Rehabilitation and Applied Science, volume 29, issue 1, 2013, Pages 59~68
DOI : 10.14368/jdras.2013.29.1.059
The objective of this study was to analyze occlusal contact pattern of 33 young adult males with normal occlusion during lateral excursion using T-scan III system which can measure the dynamic occlusion. Occlusal contact patterns were examined and categorized in non-working side disclusion point(more functionally acceptable position) not canine-to-canine position. Disclusion time, occlusal force, and occlusal force distribution ratio of upper canine at disclusion point during lateral excursion movement was also measured and compared among the groups divided according to contact patterns. The results showed that group function was clearly more dominant than canine guidance and other occlusal contact patterns different with existing patterns were found. There were significantly difference between groups in variables of T-scan measurement. T-scan III system is effective tools to analyze and evaluate occlusal contact patterns, disclusion time, occlusal force, and occlusal force distribution ratio of upper canine at disclusion point.
The Effect of Surface Treatment on the Shear Bond Strength of Zirconia Ceramics to Resin Cemen
Kim, Kyung Soo ; Kim, Jeong-Mi ; Kim, Yu-Lee ;
Journal of Dental Rehabilitation and Applied Science, volume 29, issue 1, 2013, Pages 69~79
DOI : 10.14368/jdras.2013.29.1.069
The aim of this study was to evaluate the effect of surface conditioning on the shear bond strength of zirconium-oxide ceramic to resin cement. A total of 120 disk-shaped zirconium-oxide ceramic blocks(3-TZP, Kyoritsu, Tokyo, Japan) were treated as follows: (1) no treatment; (2) sandblasting with 110
aluminum-oxide(Al2O3); (3) particles tribochemical silica coating(RocatecTM, 3M ESPE). Then zirconium-oxide ceramic blocks were divided into six groups(10 for each group) and bonded with resin cement(Rely X U-200, 3M ESPE). (1) No treatment / No treatment (2) No treatment / Sandblasting with 110
aluminum-oxide particles (3) No treatment / Silica coating (4) Sandblasting with 110
aluminum-oxide particles / Sandblasting with 110
aluminum-oxide particles (5) Sandblasting with 110
aluminum-oxide particles / Silica coating (6) Silica coating / Silica coating. Each group was tested in shear bond strengths by UTM. Data analysis included one-way analysis of variance(ANOVA) and the Tukey Honestly Significant Difference test (P=0.05). Group that bonded two silica coated specimen showed a highest bond strength(P<0.05). Two silica coated surface conditioning group and air-abrasion and silica coated surface conditioning group showed significantly difference with other groups(P<0.05). Other groups had no significantly difference each other. Within the limitation of this study, Surface conditioning with Rocatec treatment to each side of specimen provided the highest bond strength.
Shade Comparative Analysis of Natural tooth Measured by Visual and Two Colorimeters(ShadeEye
An, Jin-Hee ; Choi, Mee-Ra ; Shim, Hye-Won ;
Journal of Dental Rehabilitation and Applied Science, volume 29, issue 1, 2013, Pages 81~93
DOI : 10.14368/jdras.2013.29.1.081
The objectives were to evaluate the accuracy of shade selection by human visual system(VS) and 2 different colorimeters (
(SE) and Shadepilot (SP)). Maxillary anterior teeth of 30 volunteers which had no caries or restorations were included in the study. Firstly, the accordance in shade selection by 3 dentists and 2 colorimeters was investigated. Secondly, the color of the teeth were measured by 1 observer's naked eye and 2 colorimeters under different illumination conditions (Sunny versus cloudy day). Additionally testing of inter-observer variability selected colors by 2 novice and 2 experienced dentists were compared. For comparing visual and 2 different colorimeters, SP(60%) showed significantly highest rate of accordance than the visual (23.3%) or SE (16.7%) and lowest mean
;VS)(p<0.001). If accuracy of shade selection were measured using VS, the mean
value of cloudy day was higher than that of sunny day (
; p<0.001). There were no significant difference of the mean
value between sunny and cloudy day in both SE and SP. Inter- observer repeatability was higher in 2 experienced group (73.3%) than novice group (36.7%). The mean
of experienced group was lower than that of novice group (
; p<0.001). Colorimeters (SE or SP) is more accurate and more reproducible compared with human shade assessment. Using visual system may be limited by cloudy and inexperience of tester, then more experience and using colorimeters may be helpful of raising the accurate repeatability of shade selection.
Restoration of Rotated and Discolored Maxillary Incisors with a Zirconia All-Ceramic System: A Case Report
Baek, Yeon-Wha ; Lim, Young-Jun ; Kim, Myung-Joo ; Kwon, Ho-Beom ;
Journal of Dental Rehabilitation and Applied Science, volume 29, issue 1, 2013, Pages 95~101
DOI : 10.14368/jdras.2013.29.1.095
Recently, the demand for esthetic improvement by a treatment neither time consuming nor invasive is increasing. The patient wanted the maxillary anterior teeth appearance to be improved by prosthetic treatment, not other treatments such as orthodontic, periodontal, and endodontic treatments, despite the limit of esthetic improvement. In this case, among the recent variety of all ceramic systems for the aesthetic prosthetic restoration, we selected the zirconia-based system as a method of restoration in order to conceal the discoloration of teeth. The patient was satisfied with the esthetic results.
Early Treatment of a Class II Malocclusion with the Trainer for Kids (T4K): A Case Report
An, So-Youn ; Kim, Ah-Hyeon ; Shim, Youn-Soo ; Kim, Min-Jeong ;
Journal of Dental Rehabilitation and Applied Science, volume 29, issue 1, 2013, Pages 101~110
DOI : 10.14368/jdras.2013.29.1.101
(Myofunctional Research Co, Australia) is one of the myofunctional appliance developed to be used in children of mixed dentition. Myofuncitonal appliance stimulate the facial, masticatory and tongue muscle and help to balance the muscular force. Labial bow included in the device exerts strength in excessively labial inclineded upper jaw, Lip bumper blocks strength of the mouth to prevent abnormal strength exerted in lower jaw, Tongue tag secures proper position of tongue, and additional exercise is not required for child patients. For the more, simpler design and softer texture of device prmoted cooperation of patients during use. This case report is to present the satisfactory results gained by using
on Class II patients. Comment 1.
was applied in Class II malocclusion patients of mixed dentition with expected space insufficient to gain facial improvement. 2. Excessive overjet, overbite were improved. 3. Main effects are regarded to have been achieved by development of lingual slant of upper jaw, labial slant of lower jaw, and lower part of jawbone. 4. Bad habits, such as mouth breathing, can also be adjusted.