The use of ossifying collagen membranes in the horizontal alveolar deffects treatment after dental implant placement

: 1-year results from a prospective clinical trial

Abstract

Introduction: The partial or total rehabilitation of edentulous patients with dental
implants is related to a high success rate in oral rehabilitation. Factors that can
alter the loss of bone volume are systemic diseases, tooth extraction, tumors,
trauma, and periodontal diseases, which will limit implant positioning in the
alveolar edentulous areas. Objective: The aim of this study is to evaluate the clinical and radiographic results of placing dental implants in edentulous ridges with small horizontal alveolar defects, treated with a collagen membrane with ossifying properties to increase the lost alveolar volume. Materials and Methods: Patients treated with dental implants simultaneously with placement of an OSSIX collagen membrane Volumax in mandibular edentulous sites, diagnosed with a non-critical horizontal bone defect for implant placement, were studied. Data were collected at three time points: T0 (baseline or time of implant placement), T1 (6 months after implant placement) and T2 ( 12 months after implant placement. The Buccal Volume variation (BVv) and Mean Buccal variation (MBV) variables were studied for measuring volumetric changes at the buccal level by superimposing fingerprints. In terms of marginal bone changes were characterized in two variables mesial marginal bone changes (mMBC) and distal marginal bone changes (dMBC). Results: The use of the cross-linked collagenium membrane showed an average increase of 28.70+-15.81% in terms of volumetric changes (BVv) at 12 months, 0.81+-0.50 mm in the alveolar surface linear measurements (MBV) from T0 to T2 (12 months) and a bone loss of -0.71 mm in the anterior implants and -0.29 mm in the posterior implants in terms of marginal bone changes. The results for the MBC were not statistically significant. Conclusion: There is a strong association between the use of an ossifying collagen membrane and a gain of buccal volume , in relation to the maintenance of marginal bone there was not an improvement comparing with the literature.

Date of Award	25 Jul 2023
Original language	English
Awarding Institution	Universidade Católica Portuguesa
Supervisor	Tiago Borges (Supervisor) & Bruno Almeida (Co-Supervisor)