치아는 신체에서 많은 기능을 수행하고 있으며, 치아가 상실되는 경우 저작기능의 손실과 심미성 저하뿐만 아니 라 정신적인 상실감까지 느끼게 되는 경우가 많은 것 또 한 사실이다1). 치아 상실의 원인으로는 치주질환, 치아우 식증 그리고 근관치료 합병증 등이 대표적이며, 외상이나 낭종 등의 질환으로 상실되는 경우도 있다. Becker 등2)은 12년간 282명의 환자에게서 462개 치아의 발치원인으 로 치주질환이 59%, 근관치료실패가 46%, 치아우식증이 13%의 비율을 차지한다고 보고하였다.
Purpose: The present study analyzed the peri-implant bone level changes and survival rate of implants in patients with different causes for loss of teeth treated with immediate installation of implants. Also the peri-implant bone level changes within each group according to maxilla and mandible, segments, length, prosthesis span and prosthesis type existing in opposing tooth were compared. Materials and methods: Straumann Regular implants were used in this study. The patients were divided into 3 groups; Group A consisted of patients with tooth loss due to periodontal disease and Group C showed loss of tooth due to dental caries or endodontic complications who received immediately loaded implant, and subjects in Group B presented with tooth loss due to periodontal disease who received conventionally loaded implant. Temporary prostheses were delivered after abutments were set on the day of implant installation for immediately loaded implant protocol. On the other hand, conventionally loaded implant protocol proceeded with second surgery after cover screw was set. Prosthodontic procedures were done after 3 months later for mandible and 6 months later for maxilla in both protocols. Results: Fifty five (thirty eight males and seventeen females), twenty (`sixteen males and four females) and thirty eight (twenty five males and thirteen females) patients were included in respective to groups A, B, and C. For groups A, B, and C, 193, 56 and 86 implants were used, of which 3, 0 and 2 implants were failed. Therefore, the survival rates for groups A, B, and C were 98.4, 100 and 97.7% respectively. The peri-implant bone level changes in groups B and C in comparison to group A were not significantly different. The peri-implant bone level changes within each group according to maxilla and mandible, segments, length, prosthesis span and prosthesis type existing in opposing tooth showed no statistical difference. Conclusions: The implants treated with immediate loading and immediate installation had satisfactory survival rate which implied that periodontally compromised are not contraindication for this protocol. [THE JOURNAL OF THE KOREAN ACADEMY OF IMPLANT DENTISTRY 2010;29(2):1-12]
Ⅰ. 서론 II. 연구재료 및 방법 III. 연구 결과 Ⅳ. 고찰 V. 결론 REFERENCES
