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성장 이후 교정치료와 골이식을 동반한 구순구개열 환자의 골결손 부위 임플란트 치험례
박진호,김다소미,정휘동,차정열 대한구순구개열학회 2018 대한구순구개열학회지 Vol.21 No.1
We report the case of an unilateral alveolar cleft man who was performed orthodontic treatment and dental implant after autogenous bone graft on cleft site with bone of ramus. We achieved improvement of implant esthetics by multidisciplinary treatment approach in cleft patient. A 35-year-old man with skeletal class I and unilateral alveolar cleft, we planned to graft ramus bone on cleft site, perform orthodontic treatment and to place implant on missing area. For bone graft on the cleft site, we applied autogenous bone of ramus area and demineralized allogenic bone. Orthodontic treatment started for regaining space of dental implant on #22 area, and implant was placed on #22 area. Following the procedure, final prostheses were placed on implant. Upper and lower arch harmony were obtained and space for prostheses were redistributed. Also, we recovered alveolar bone continuity by autogenous bone graft of ramus before orthodontic treatment and could place implant successfully without additional alveloar bone graft on cleft site.
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박진이,김다소미,한상선,유형석,차정열 대한영상치의학회 2019 Imaging Science in Dentistry Vol.49 No.4
Purpose: This study was performed to evaluate the dimensional accuracy of digital dental models constructed from cone-beam computed tomographic (CBCT) scans of polyvinyl siloxane (PVS) impressions and cast scan models. Materials and Methods: A pair of PVS impressions was obtained from 20 subjects and scanned using CBCT (resolution, 0.1 mm). A cast scan model was constructed by scanning the gypsum model using a model scanner. After reconstruction of the digital models, the mesio-distal width of each tooth, inter-canine width, and inter-molar width were measured, and the Bolton ratios were calculated and compared. The 2 models were superimposed and the difference between the models was measured using 3-dimensional analysis. Results: The range of mean error between the cast scan model and the CBCT scan model was - 0.15 mm to 0.13 mm in the mesio-distal width of the teeth and 0.03 mm to 0.42 mm in the width analysis. The differences in the Bolton ratios between the cast scan models and CBCT scan models were 0.87 (anterior ratio) and 0.72 (overall ratio), with no significant difference (P>0.05). The mean maxillary and mandibular difference when the cast scan model and the CBCT scan model were superimposed was 53 μm. Conclusion: There was no statistically significant difference in most of the measurements. The maximum tooth size difference was 0.15 mm, and the average difference in model overlap was 53 μm. Digital models produced by scanning impressions at a high resolution using CBCT can be used in clinical practice.
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