Clinical evaluation of the width of buccal keratinized gingiva around implants at posterior mandibular single tooth loss sites and continuous teeth loss sites following free gingival grafting
HUANG Jiang-yong
LI Chan-xiu
ZHONG Mei
CHEN Zhi-ying
LUO Tao
GUO Lyu-hua
Abstract：Objective To compare the effect of free gingival grafting on increasing the width of the buccal keratinized gingiva at posterior mandibular single tooth loss sites and continuous teeth loss sites. Methods Twenty patients with inadequate buccal keratinized gingiva were subjected to gingiva grafting surgery two months after bone level implant placement. Two months after the soft tissue surgery, healing abutments were placed and crowns were connected to the abutment. The widths of the buccal keratinized gingiva around the implant were measured on the day of cementing the definite restorations as baseline, and 6-month later as follow-up. The probing depth (PD) and bleeding index of probing (BOP) were recorded at follow-up. Gingival grafting outcome on single implant were compared to that on several implants. Results The buccal keratinized gingiva width was (3.2±0.1) mm in the single implant group, and (2.9±0.1) mm in several-implant group; 6 months later the widths were reduced to (3.1±0.1) mm and (2.5±0.1) mm, respectively. The buccal keratinized gingival width shrinkage around the single implant group (4.2±0.7) ％ was significantly lower than several-implant group [ (13.6±2.4) ％, P＜0.05]. PD and BOP were similar in both groups. Conclusion Sufficient increased keratinized gingiva widths, together with reduced keratinized gingival width shrinkage have been found around single tooth implant placement site. Though less keratinized gingival width and more keratinized gingival width shrinkage have been found in continuous implant placement sites, PD and BOP are comparable to single implant placement site. Free gingival grafting has been proven to be a successful technique for maintaining peri-implant health in the long term.
Keywords：free gingival graftwidth of keratinized gingivacontinuous teeth lossimplant
Publication Date：2019-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 224-227 )