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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 31, Issue 4 - Dec 2015
Volume 31, Issue 3 - Sep 2015
Volume 31, Issue 2 - Jun 2015
Volume 31, Issue 1 - Mar 2015
Selecting the target year
Geographic information system (GIS) analysis on the distribution of patients visiting at a dental college hospital: a pilot study
Joo, Hyun-Tae ; Jeong, Byung-Joon ; Cho, In-Woo ; Shin, Hyun-Seung ; Lim, Mi-Hwa ; Park, Jung-Chul ;
Journal of Dental Rehabilitation and Applied Science, volume 31, issue 4, 2015, Pages 283~293
DOI : 10.14368/jdras.2015.31.4.283
Purpose: The aims of this study are to analyze and to visualize distribution of patients visiting at a dental college hospital, using geographic information system (GIS). The visualized data can be utilized in patient care and treatment planning, ultimately leading to the assessment of risk evaluation and prevention of dental diseases. Materials and Methods: Patient information data was obtained from Dankook University Dental Hospital including the unit number, gender, date of birth, and address from 2007 to 2014. Patient distribution was visualized using GIS. Statistical analyses were performed using SAS 9.3 and ArcGIS 10.1. Five factors including proximity, accessibility, age, gender, and socioeconomic status were investigated as the explanatory variables of the patient distribution. Results: The visualized patient data showed a nationwide scale of the patient distribution. There was a little difference in characteristics for each department. As closer at Dankook University Dental Hospital, visitors increased. And it strongly showed that elderly patients in rural areas tend to visit more. Conclusion: The distribution of patients has been shown to be significantly affected by the proximity, accessibility, age, gender and socioeconomic status. The underlying reason remains to be further studied.
Color evaluation of low viscosity bulk-fill resin with composite resin capping layer
Yun, Jonghyeon ; Jung, Ji-Hye ; Chang, Hoon-Sang ;
Journal of Dental Rehabilitation and Applied Science, volume 31, issue 4, 2015, Pages 294~300
DOI : 10.14368/jdras.2015.31.4.294
Purpose: The purpose of this study was to measure the color of low viscosity bulk-fill resin with a capping layer and to compare it with the color of microhybrid composite resin. Materials and Methods: A low viscosity bulk-fill resin (SDR) and microhybrid composite resin of shade A2 (A2) or A3 (A3) were fabricated to 4 mm thickness and light cured for 20 seconds. CIE
values of the resin specimens were measured with a colorimeter. Then shade A2 and A3 microhybrid composite resin was capped over low viscosity bulk-fill resins in 2 mm thickness (SA2, SA3). The resin specimens were light cured for 20 seconds and the color was measured and analyzed (n = 10). Color differences (
) between SA2 and A2, SA3 and A3 were also calculated. Results:
value was highest in SDR followed by SA2 and SA3.
value of A2 and A3 was the lowest.
value was lowest in SDR followed by SA2 and SA3, and A2 and A3 was the highest.
value was lowest in SDR followed by A2 and SA2, and A3 and SA3 was the highest.
between A2 and SA2 (
), and that between A3 and SA3 (
) was lower than the perceptible color difference threshold of
between low viscosity bulk-fill resin with a capping layer and microhybrid resin was lower than the perceptible color difference threshold.
Bone changes around the maxillary posterior teeth opposing the implants in mandible: a clinical study
Park, Chan-Jin ; Huh, Yoon-Hyuk ; Cho, Lee-Ra ;
Journal of Dental Rehabilitation and Applied Science, volume 31, issue 4, 2015, Pages 301~309
DOI : 10.14368/jdras.2015.31.4.301
Purpose: When the edentulous area is restored by implant prostheses, the opposing hypofunctioned teeth will receive physiologic mechanical stimuli. This study evaluated the bone changes around the maxillary teeth opposing an implant restoration installed in the mandibular posterior area. Materials and Methods: Radiographs of the opposing teeth were taken at prostheses delivery (baseline), 3 and 6 months later. A customized film holding device was fabricated to standardize the projection geometry for the serial radiographs of the opposing teeth. The gray values of the region of interest of each digital image were compared according to time. Repeated measured analysis of variance was performed at the 95% significance level. Results: The gray values of the alveolar bone around the antagonist teeth of implants increased with time. The changes in gray values of the middle area were greater than those of the crestal area. However, the gray values of the mesial and distal areas were not different. The changes in gray values were different according to the unloaded time. Conclusion: A change in bone tissue will occur if a proper physiologic load is again applied to the bone tissues around a hypofunctioned tooth.
Evaluation of fitness in implant screw as tightening torque in dental laboratory
Song, Young-Gyun ;
Journal of Dental Rehabilitation and Applied Science, volume 31, issue 4, 2015, Pages 310~315
DOI : 10.14368/jdras.2015.31.4.310
Purpose: The purpose of this study was to measure the tightening torque for dental implant in dental laboratory and to analyze of the effects of different tightening torque. Materials and Methods: The tightening torque for dental implant in dental laboratory were measured by digital torque gauge. The length of abutment and analog were measured as tightening torque of manufacturer's instructions and the measured value. And the data were statically analyzed. Results: The mean tightening torque of implant screw in dental laboratory was
. The external type implant system of total length were showing no significant differences but the internal type implant system had difference significant (P < 0.05) when compared with tightening torque. Conclusion: The implant prosthesis should be made under manufacturer's instructions especially as tightening torque of screw. For the fidelity of implant prosthesis, dental technician should learn how to use the torque gauge.
Three dimensional accuracy analysis of dental stone casts fabricated using irreversible hydrocolloid impressions
Joo, Young-Hun ; Lee, Jin-Han ;
Journal of Dental Rehabilitation and Applied Science, volume 31, issue 4, 2015, Pages 316~328
DOI : 10.14368/jdras.2015.31.4.316
Purpose: The objects of this study was to evaluate the accuracy of the dental stone casts made from alginate impressions according to storage condition and stone pouring time. Materials and Methods: Each of upper and lower impressions of dental model was taken. The dental stone models were made immediately, 10, 30, 60, 180, 360 minutes after the impressions were taken at each storage condition. 3D models were constructed by scanning the stone model using 3D laser scanner. With Reference points, positioned on digital models, linear measurements of the dimensional change were compared by 3D metrology software, 3D average models were made and superimposition to identify the specific site of dimensional change and to measure surface deviation (mm). Results: Dental stone models which were made immediately after taking the impression showed the smallest linear dimensional change. As the stone pouring time was prolonged, the linear dimensional change was increased. More than 180 minutes after impression taking, linear dimensional change and surface distortion increased in the posterior molar region, regardless of the storage condition. Conclusion: For the optimum accuracy of the dental stone casts, alginate impression should be poured as soon as possible. If there were a need for storing, a humidor with 100% relative humidity must be used and be stored less than 180 minutes to fabricate the accurate dental model.
Status of Mongolian dentistry viewed from information resources and selection of adhesive dental restorative materials and continuing education
Kim, Hye-Jeong ; Puntsag, Oyunenkh ; Kim, Jin-Woo ; Park, Se-Hee ; Cho, Kyung-Mo ;
Journal of Dental Rehabilitation and Applied Science, volume 31, issue 4, 2015, Pages 329~339
DOI : 10.14368/jdras.2015.31.4.329
Purpose: To investigate the information acquisition, selection criteria and selection methods of Mongolian dentists regarding adhesive agents for bonded restorations, and to provide future direction for continuing education. Materials and Methods: One hundred Mongolian dentists were interviewed and asked to complete a questionnaire containing 7 questions on general information about the responder, 8 questions on information acquisition and selection of bonded restoration agents, and 10 questions on continuing education. Results: Objective and credible information regarding bonded restoration materials were not being acquired, and logical material selection was not being made. The extent of continuing education was inadequate and not enough information regarding education was being acquired. The participants responded positively to online supplementary education. Conclusion: A systemized approach needs to be established in Mongolian dentistry to enable organized delivery of evidence-based guidelines and information, and logical selection of the numerous and various bonded restoration agents. Furthermore, the education of dentists, through various means, is required to enable proper use of the selected materials.
Laser therapy in peri-implantitis treatment: literature review
Lee, Kyung-Joong ; Lee, Jong-Ho ; Kum, Kee-Yeon ; Lim, Young-Jun ;
Journal of Dental Rehabilitation and Applied Science, volume 31, issue 4, 2015, Pages 340~348
DOI : 10.14368/jdras.2015.31.4.340
Peri-implantitis is the most common reason for a late failure and can occur even after years of successful osseointegration. The role of microbial plaque accumulation in the development of peri-implantitis has been well documented. On the other hand, the ideal method of implant surface decontamination to re-establish the health of peri-implant tissue remains to be determined. Removal of bacterial deposits is essential in the treatment of peri-implant infections, and various therapeutic approaches have been described in the literature, including mechanical debridement, disinfection with chemotherapeutic agents, and laser therapy. Recently, there has been a plenitude of scientific data regarding the use of laser irradiation to achieve titanium surface decontamination. Thus, research is focusing on lasers' potential use in the treatment of peri-implantitis. The aim of this literature review is to analyze and evaluate the efficacy of laser therapy for the treatment of peri-implantitis.
Prosthodontic problems and complications associated with osseointegration
Shin, Soo-Yeon ;
Journal of Dental Rehabilitation and Applied Science, volume 31, issue 4, 2015, Pages 349~357
DOI : 10.14368/jdras.2015.31.4.349
Edentulous patients with a severely resorbed mandible or maxilla often experience problems with conventional dentures, such as insufficient stability and retention, together with a decrease in chewing ability. Because of the good prognosis of dental implants, these patients can be successfully treated with implant-retained or implant-supported prosthesis. Ideally, a maximum number of implants of maximum length are placed in appropriate surgically prepared sites that are surrounded by a maximum amount of bone of favorable quality. The implants are favorably aligned faciolingually and mesiodistally to enhance optimal prosthodontic design. This article describes the clinical problems and complications encountered when treating a consecutive number of edentulous patients with osseointegrated implant-supported prostheses.
Full mouth rehabilitation using monolithic zirconia: a clinical report
Oh, Won-Seok ; Ryu, Jae-Jun ;
Journal of Dental Rehabilitation and Applied Science, volume 31, issue 4, 2015, Pages 358~363
DOI : 10.14368/jdras.2015.31.4.358
Previously, the usage of monolithic zirconia in anterior restoration was limited because of problems such as the monotony of tones and shades which would compromise the outcome of esthetic purpose. Zirconia was merely used as a coping with additional porcelain veneering whereas porcelain chipping cannot be evaded. Recently, with the improvement of monolithic zirconia, the various translucency and tones made it possible to use zirconia for anterior restoration. In this case, a male patient of 63 years old received a full mouth rehabilitation with monolithic zirconia. After a period of time usage, the outcome showed a favorable result functionally and esthetically.
Regeneration of emergence profile with soft tissue graft and wide computer aided design/computer aided mamufacturing abutments: a clinical report
Kim, Min-Kyung ; Lee, Ji-Hun ; Ahn, Seung-Geun ; Kim, Kyung-A ; Seo, Jae-Min ;
Journal of Dental Rehabilitation and Applied Science, volume 31, issue 4, 2015, Pages 364~370
DOI : 10.14368/jdras.2015.31.4.364
Fixed restoration using implants for patients with posterior partial edentulism is generalized technique. As patient demands increase, the functional and esthetic implant restoration to achieve similar results to lost natural teeth is becoming an important issue. It is inevitable to use customized CAD/CAM abutments rather than ready-made abutments for the creation of implant prosthesis which closely resembles natural teeth. Using CAD/CAM abutment made it possible to obtain natural emergency profiles for posterior implant prostheses, ensuring more comfortable, efficient management of oral hygiene. However, keratinized gingiva with sufficient width and height for a natural emergence profile is required to use a large diameter CAD/CAM abutment which ensures stability and esthetics of hard/soft tissue around the implants. In this case, for esthetical and functional implant zirconia prosthesis, soft tissue graft was performed and customized CAD/CAM abutments were used following ridge augmentation, sinus graft and implantation. Satisfactory results were obtained functionally and esthetically through periodic clinical evaluation, and I hereby report this case.
The effect of improperly contoured and poor fitting restorations to patient with oral lichen planus: periodontal and prosthetic treatment
Shin, Jin-Beom ; Cho, Jin-Hyun ; Lee, Cheong-Hee ;
Journal of Dental Rehabilitation and Applied Science, volume 31, issue 4, 2015, Pages 371~377
DOI : 10.14368/jdras.2015.31.4.371
Oral lichen planus (OLP) is a common mucocutaneous disease, which presents as bilateral or multiple lesions. The several factors are implicated in etiology of OLP such as dental restorations, systemic disease, drugs and stress. Especially the influence of dental restorations and plaque control for OLP has been the interest in dentistry. This case is about OLP patient having poor contoured and ill-fitting metal ceramic restorations. The patient in this study has suffered from OLP for a long time, particularly after restoration of metal ceramic restorations on both posterior teeth of maxilla and mandible. This study reported that OLP lesion recovered effectively by improving the contour and fitness of restorations with plaque control.
Mandibular implant-natural tooth retained overdenture using magnetic attachment with stress breaker
Park, Eun-Chul ; Lee, Su-Yeon ; Kim, Hee-Jung ;
Journal of Dental Rehabilitation and Applied Science, volume 31, issue 4, 2015, Pages 378~386
DOI : 10.14368/jdras.2015.31.4.378
Overdenture has the advantage of improving the stability and retention of the denture but the abutment may be easily affected by caries or periodontal disease and the thin denture can be easily broken. The magnetic attachment overdenture has a high vertical retention but a low horizontal retention, thus, exerting a less disruptive force to the abutment or implant and shows less abrasion or damage compared to other mechanical retainers. Denture fractures in overdenture is caused by the thin denture base as the attachment is inserted, but it may also be caused by the difference in detrusion between soft tissue and hard tissue, and between an implant and a natural tooth. To compensate this shortcoming, a magnetic attachment with a silicone ball inserted in the magnet was developed as we report a successful case using this specific type of magnetic attachment overdenture.