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기능적 부하 후 “Short Implant” 주변의 골 흡수에 대한 방사선학적 연구
박영주(Young-Ju Park),남정훈(Jeong-Hun Nam),노경록(Kyung-Lok Noh),연병무(Byoung-Moo Yeon),유우근(Woo-Geun Yu),이정원(Jeong-Won Lee),안장훈(Jang-Hun Ahn),강태인(Tae-In Gang),박미희(Mi-Hee Park) 대한치과의사협회 2010 대한치과의사협회지 Vol.48 No.8
Purpose: The short dental implant is considered as possible solution in the alveolar bone height deficient cases. The aim of this study was to evaluate clinical availability of short implants by measuring the marginal bone loss of short length implants and comparing with that of conventional length implants. Materials and Methods: The groups were composed of patients who had received at least one implant. The samples of this study were selected from patients who with functional loading after prosthetic treatment for 1 year follow up period. The implants with a length of 5.7㎜ and 6㎜ were considered short. (Bicon Dental implants, USA). The experiment group was composed of 4.5×6㎜, 5×6㎜, 6×5.7㎜ implants (total 18 implants were placed in 14 patients, 8 on maxilla, 10 on mandible). The control group was composed of 4.5×8㎜, 5×8㎜, 4.5×11㎜, 5×11㎜. All implants were selected only by implants placed on molar area. We evaluated marginal bone loss in radiographic images at baseline (implant loading) and 3, 6, 12 months after loading. Additionally, crown-to-implant ratio was evaluated, and marginal bone loss according to crown-to-implant ratio after functional loading was analyzed. Results: The short implant group had a mean marginal bone level of -0.52±0.69 ㎜; the 8㎜ group, -0.22±0.82㎜; and the 11㎜ group, -0.10 ± l.09㎜ after 1 year of functional loading. But significant differences were not detected between three groups at every follow-up period. Crown-to-implant ratio in short implant group was 1.55±0.23; 8㎜ group was 1.15±0.18; and 11㎜ group was 0.92±0.15. Additionally, significant differences between three groups were founded. (P<.0001) The greatest marginal bone loss after 1 year follow-up was founded at crown-to-implant ratio 1-1.49 range in short implant. Conclusion: The marginal bone loss of short implants was comparable to that of long implants. So, the short implants can be a clinically acceptable option.
변형 구개 유경 판막을 이용한 상하악 전방골 분절 성형술
박영주(Young Ju Park),남정훈(Jeong Hun Nam),연병무(Byoung Moo Yeon),송준호(Jun Ho Song),노경록(Kyung Lok Noh),방은오(Eun O Pang),김다영(Da Young Kim),김준현(Jun Hyeon Kim),안장훈(Jang Hun Ahn),강태인(Tae In Gang) 대한치과의사협회 2009 대한치과의사협회지 Vol.47 No.6
This article presents a modified palatal pedicled incision design in anterior segmental maxillary osteotomy. This method includes the circumcrevicular incisions and two vertical relaxing incisions. Then, it is different from the Couper’s method with vestibular horizontal incision and other anterior segmental osteotomy techniques. The main advantages of this method are an improved visibility of surgical field and favorable preservation of palatal pedicle. A patient who had been operated by anterior segmental maxillary and mandibular osteotomy without pre operative orthodontic treatment was analyzed for advantages and complications during the intraoperative and early post operative period. There are no specific major complications such as infection, gingival recession and dehiscence. And the patient had a pleasing esthetic facial appearance.