완전 무치악 환자에서 임프란트 식립을 통한 보철 수복은 수직적-수평적으로 위축된 치조제와 구강점막의 탄력 저 하로 인해 매우 어렵다. 심하게 위축된 치조골에서 다수의 임프란트 식립이 계획된 경우 광범위한 치조골의 결손부 를재건하기 위해 onlay block bone graft를시행 후지연 식 립이 추천된다. 이러한 block bone graft는 견고성이 있어 외형을 유지하거나 재건 부위의 안정성이 높다는 장점을 지닌 반면, 감소된 골생성 능력, 느린 재혈관화, 공여부위 의합병증발생가능성등의단점을지닌다.
The treatment of completely edentulous patients by implant restoration is difficult that most edentulous patients have vertical and/or horizontal bone resorption of residual ridge and lack of resistance of the oral mucosa. When multiple implantations are planned for the severely atrophied alveolar ridge, usually delayed implant placement is recommended after the procedure of onlay block bone graft. Block bone graft has the advantage of maintaining the contour of bone and stabilizing the reconstructed site. It however, shows the reduced capability of osteogenesis and has slower revasculization tendency and more possibility of complication in the recipient site. Guided bone generation(GBR) using particulate bone is the most popular procedure, when bone graft is needed like the cases of dehiscence or fenestration wound with implant installations. Even though this method provides convenience for operator and satisfaction for patients, it is not usually indicated for reconstruction of severely atrophied alveolar bone because of its poor prognosis. These are the cases we performed minimal invasive approach with GBR procedure for the case of complete edentulous arch with large bone defects using the absorbable membrane rather than using non-absorbable membrane or onlay block bone graft to make sufficient bone reconstruction for multiple implant placement. [THE JOURNAL OF THE KOREAN ACADEMY OF IMPLANT DENTISTRY 2011;30(1):77-82]
I . 서론 II. 증례보고 III. 고찰 IV. 결론 REFERENCES
