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Clinical Oral Investigations

Published in:

01-06-2018 | Original Article

A retrospective comparison of three modalities for vestibuloplasty in the posterior mandible: apically positioned flap only vs. free gingival graft vs. collagen matrix

Authors: Hyun-Chang Lim, Sang-Chun An, Dong-Woon Lee

Published in: Clinical Oral Investigations | Issue 5/2018

Abstract

Objectives

This work aimed to comparatively evaluate the three modalities of vestibuloplasty around implants in the posterior mandible.

Materials and methods

Forty patients who presented with a shallow vestibule and insufficient keratinized gingiva were divided into three groups: apically positioned flap only (APF group), APF with free gingival graft (FGG group), and APF with collagen matrix (CM group). The width of KT was measured at baseline, immediately after surgery (T0), and 6 months (T6) and 12 months after surgery (T12). An esthetic evaluation (color match, contour, and texture) was conducted.

Results

Most of the shrinkage occurred within 6 months. The FGG group demonstrated less shrinkage of KT up to 12 months compared to the APF and CM groups. The APF and CM groups exhibited a prolonged and similar rate of shrinkage. The APF and CM groups also showed significantly better esthetic profiles.

Conclusions

Within the limitations of the present study, FGG may be the most predictable modality for increasing KT in the posterior mandible, but it should be emphasized that the posterior mandible does not require high esthetics.

Clinical relevance

The effect of apically positioned flap and collagen matrix may be diminished by several factors in posterior mandible, such as low vestibule and high muscle pull. For increasing the dimension of keratinized tissue in posterior mandible, conventional free gingival graft may be more predictable compared to other options.

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Title: A retrospective comparison of three modalities for vestibuloplasty in the posterior mandible: apically positioned flap only vs. free gingival graft vs. collagen matrix
Authors: Hyun-Chang Lim
Sang-Chun An
Dong-Woon Lee
Publication date: 01-06-2018
Publisher: Springer Berlin Heidelberg
Published in: Clinical Oral Investigations / Issue 5/2018
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI: https://doi.org/10.1007/s00784-017-2320-y

At a glance: The STEP trials

Springer Medicine

A retrospective comparison of three modalities for vestibuloplasty in the posterior mandible: apically positioned flap only vs. free gingival graft vs. collagen matrix

Abstract

Objectives

Materials and methods

Results

Conclusions

Clinical relevance

At a glance: The STEP trials

Springer Medicine

Abstract

Objectives

Materials and methods

Results

Conclusions

Clinical relevance

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