Two-stage transcrestal sinus floor elevation-insight into replantation: Six case reports

Zhe-Zhen Lin; Dong-Qian Xu; Zhang-Yan Ye; Ge-Ge Wang; Xi Ding

doi:10.12998/wjcc.v9.i10.2386

Two-stage transcrestal sinus floor elevation-insight into replantation: Six case reports

World J Clin Cases. 2021 Apr 6;9(10):2386-2393. doi: 10.12998/wjcc.v9.i10.2386.

Authors

Zhe-Zhen Lin¹, Dong-Qian Xu¹, Zhang-Yan Ye¹, Ge-Ge Wang¹, Xi Ding²

Affiliations

¹ Department of Stomatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China.
² Department of Stomatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China. dingxi@wzhospital.cn.

Abstract

Background: Transcrestal sinus floor elevation (TSFE) has been widely used in the oral clinic when the residual bone height (RBH) exceeds 5 mm. However, when there is insufficient RBH in the posterior maxilla, two-stage TSFE may be an option.

Case summary: This article introduces the concept of two-stage TSFE. Six patients had osseointegration failure after TSFE. For the first-stage surgery, we restricted the vertical bone augmentation as much as possible. At the second-stage surgery, the increased RBH was 3.28 ± 1.55 mm, which was beneficial for surgery. Five implants functioned successfully on schedule, but one implant failed again during the healing period. A third surgery was performed, and the implant functioned successfully.

Conclusion: When RBH was less than 5 mm, two or more procedures of TSFE might result in a higher RBH.

Keywords: Case report; Dental implant; Failure; Replantation; Transcrestal sinus floor elevation; Two-stage.

Publication types

Case Reports