Predictability of simultaneous implant placement with sinus floor elevation in the severely atrophic posterior maxillae ; Comparison of lateral and trans-crestal approaches

Kim,  Yeong-Wook; Keum,  Yoon-Seon; Son,  Hyo-Jeong; Lee,  Jang-Yeol; Kim,  Hyoun-Chull; Lee,  Sang-Chull

J Korean Dent Assoc > Volume 48(3); 2010 > Article

The Journal of The Korean Dental Association 2010;48(3):205-217.
Published online March 31, 2010.

지상보수교육강좌 1 - 상악동저 거상술을 동반한 임프란트 동시 식립의 예지성 평가; 측방접근술과 치조정접근술의 비교

김영욱¹, 금윤선², 손효정³, 이장렬⁴, 김현철⁵, 이상철⁶

^¹리빙웰치과병원 구강악안면외과
^²리빙웰치과병원 구강악안면외과
^³리빙웰치과병원 구강악안면외과
^⁴리빙웰치과병원 구강악안명방사선과
^⁵리빙웰치과병원 구강악안면외과
^⁶리빙웰치과병원 구강악안면외과

Predictability of simultaneous implant placement with sinus floor elevation in the severely atrophic posterior maxillae ; Comparison of lateral and trans-crestal approaches

Yeong-Wook Kim¹, Yoon-Seon Keum², Hyo-Jeong Son³, Jang-Yeol Lee⁴, Hyoun-Chull Kim⁵, Sang-Chull Lee⁶

¹Department of Oral and Maxillofacial Surgery, LivingWell Dental Hospital
²Department of Oral and Maxillofacial Surgery, LivingWell Dental Hospital
³Department of Oral and Maxillofacial Surgery, LivingWell Dental Hospital
⁴Department of Oral and Maxillofacial Radiology, LivingWell Dental Hospital
⁵Department of Oral and Maxillofacial Surgery, LivingWell Dental Hospital
⁶Department of Oral and Maxillofacial Surgery, LivingWell Dental Hospital

Abstract

Purpose
The aim of this study is to evaluate the survival rates and analyze the stability of lateral approach and trans-crestal approach for maxillary sinus floor elevation of simultaneous implant placement. Materials and method 407 patients who have been treated in LivingWell dental hospital between 2003 to 2009 were selected. Lateral window technique, osteotome technique and sinus drill technique were used for sinus floor elevation procedure. A total of 714 implants-MP-1 HA coated implant(Tapered Screw VentTM, SplineTM, Zimmer, USA), FBR surfaced implant(Pitt-EasyTM, Oraltronics, Germany)-were placed in grafted maxillary sinus simultaneously. The autogenous bone or a combination with the allograft or alloplast was grafted into sinus. Sinus floor elevation was combined with vertical/horizontal onlay bone grafts to reconstruct the defect of alveolar ridge. Results The average preoperative height of the maxillary alveolar bone was 5.78mm(range: 0.4mm~12.5mm). 14 implants failed during the healing period(lateral approach: 4, trans-crestal approach: 10) and 3 implant failed after prosthetic loading(lateral approach: 2, trans-crestal approach: 1). The cumulative survival rate of implants after 6 years was 97.6%. Trans-crestal approach(97.4%) and lateral approach(97.9%) had similar survival rates. Conclusion The results indicate that the trans-crestal approach and lateral approach for maxillary sinus elevation is a acceptable method at atrophic maxillary posterior area.

Key Words: lateral approach;maxillary sinus floor elevation;simultaneous implant placement;trans-crestal approach;