SS-Tricalcium Phosphate Used with Onlay Graft for Horizontal Bone Augmentation Yielded Preferable Result: a Case Report

Introduction

ß-tricalcium phosphate used with onlay graft for horizontal bone augmentation yielded preferable results: a case report Yaqian Chen, Qingqing Wu, Yi Man State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, China Rehabilitation of teeth lost due to disease, trauma, surgery or congenital problems with implant-supported prosthesis has become a common practice worldwide. (1) However, various bone defects often exist in the implant areas. In some severe atrophic cases, alveolar bone must be restored before or in combination with implant placement.

Bone augmentation using onlay bone grafts which are harvested from either intraoral or extraoral sites is currently one of the most reliable techniques with potential success rate. (2, 3) However, the use of autografts only as onlay grafts has some drawbacks such as the high morbidity at the donor site, limited bone graft supply, and the need for multiple surgical sites. (4, 5) Therefore, synthetic bone graft materials have become a popular choice for bone augmentation during the last decade and the application of different bone substitutes has been described in different oral surgeries. (6.7.8.9) Recently, the synthetic bone graft based on ß-tricalcium phosphate which can be completely absorbed in 6 to 9 months has been reported to be used in different oral surgeries such as alveolar preservation and periodontal defects with satisfactory clinical and histologic results. (10.11.12) Tricalcium phosphate grafts have structural characteristics that are similar to bone tissue, moreover, during reabsorption it can provide ion calcium and magnesium for surrounding tissue, thus creating a correct ionic environment, which could activate more alkaline phosphatase for further bone synthesis. (13)

The purpose of this case report is to present clinical and radiographic results for a patient treated with ß-TCP bone substitute with autogenous bone block harvested in situ as onlay grafts for horizontal bone augmentation.

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