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

作者：Lim Hyun-Chang; An Sang-Chun; Lee Dong-Woon^*

来源：Clinical Oral Investigations, 2018, 22(5): 2121-2128.

DOI：10.1007/s00784-017-2320-y

• Apically positioned flap
• Collagen matrix
• Free gingival graft
• Keratinized gingiva
• Vestibuloplasty

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.

• 出版日期2018-6