Horizontal Ridge Augmentation Using a Xenograft Bone Substitute for Implant-Supported Fixed Rehabilitation: A Case Report with Four Years of Follow-Up.

Bruno Freitas Mello,Gustavo Dos Santos Coura,Jamil Awad Shibli,Márcio De Carvalho Formiga,Luiz Fernando De Souza Da Silva

doi:10.1155/2020/6723936

Abstract

The guided bone regeneration (GBR) technique has been used to achieve optimal bone volume augmentation and allow dental implant placement in atrophic maxilla and mandible, with predictable results and high survival rates. The use of bone substitutes has reduced the necessity of autogenous bone grafts, reducing the morbidity at the donor areas and thus improving the patients' satisfaction and comfort. This clinical case report shows a clinical and histological evaluation of the bone tissue behavior, in a case that required the horizontal augmentation of the alveolar ridge, with the use of xenograft biomaterial and further dental implant placement. After six months of healing time, six implants were placed, and a bone biopsy was done. The histological analysis depicted some fragments of the xenograft bone graft, integrated with the new-formed bone tissue.

Highlights

The rehabilitation of totally, partially, and single-unit edentulous patients with the use of dental implants is an established treatment with high success rates [1, 2]
Autogenous bone grafts are often used in guided bone regeneration (GBR) procedures and are considered as the gold standard because it is the only biomaterial that combines properties of osteogenesis, osteoinduction, and osteoconduction [7, 8]
Disadvantages such as morbidity at the donor site, limited availability, tooth sensitivity, and risk of dehiscence of the wounds [1, 7, 9,10,11] have led to investigations on the development and application of bone substitutes for the regeneration of the alveolar bone ridge [11,12,13]

Summary

Introduction

The rehabilitation of totally, partially, and single-unit edentulous patients with the use of dental implants is an established treatment with high success rates [1, 2]. Autogenous bone grafts are often used in GBR procedures and are considered as the gold standard because it is the only biomaterial that combines properties of osteogenesis, osteoinduction, and osteoconduction [7, 8]. Disadvantages such as morbidity at the donor site, limited availability, tooth sensitivity, and risk of dehiscence of the wounds [1, 7, 9,10,11] have led to investigations on the development and application of bone substitutes for the regeneration of the alveolar bone ridge [11,12,13]. The aim of this case report is to describe a GBR with xenograft and collagen membrane for horizontal augmentation for an implant-supported fixed rehabilitation and the four years of follow-up

Case Report

Discussion

Conclusion