Impact of soft tissue graft on the preservation of compromised sockets: a randomized controlled clinical pilot study.

The aim of this pilot study was to evaluate the impact of the association of free gingival graft (FGG) or collagen-matrix xenograft (CMX) to deproteinized bovine bone graft (DBBG) on the preservation of post-extraction sockets with facial-wall defects. Sixteen patients who presented a maxillary tooth with a facial bone defect and indication of extraction were selected. After the surgical procedure, all the post-extraction sockets were filled with DBBG and covered with a collagen membrane. The cervical part of the socket was then sealed with either FGG or CMX. Clinical and tomographic analyses were performed at baseline and 4 months after the grafting procedure. The FGG sockets showed higher values for the width of the bone ridge than the CMX sockets at 4 months. There was no difference regarding biopsy composition. In conclusion, regardless of the type of soft tissue graft used, socket preservation with DBBG at sites presenting facial bone defects enabled implant placement without further guided bone regeneration, whether the sockets were sealed with FGG or CMX.

O objetivo deste estudo piloto foi avaliar o impacto da associação de enxerto gengival livre (FGG) ou xenoenxerto de matriz de colágeno (CMX) ao enxerto ósseo bovino desproteinizado (DBBG) na preservação de alvéolos pós-extração com defeitos da parede óssea vestibular. Foram selecionados 16 pacientes que apresentavam dente superior com defeito ósseo vestibular e indicação de extração. Após o procedimento cirúrgico, todos os alvéolos pós-extração foram preenchidos com DBBG e recobertos por membrana de colágeno. A parte cervical dos alvéolos foi então selada com FGG ou CMX. As análises clínicas e tomográficas foram realizadas no início do estudo e 4 meses após o procedimento de enxerto. Os alvéolos pós-extração tratados com FGG apresentaram maiores valores para a largura da crista óssea do que os alvéolos tratados com CMX na avaliação de 4 meses. Não houve diferenças em relação à composição da biópsia. Em conclusão, independentemente do tipo de enxerto de tecido mole utilizado, a preservação dos alvéolos com DBBG em locais com defeitos ósseos faciais permitiu a colocação do implante sem regeneração óssea guiada.

Impact of soft tissue graft on the preservation of compromised sockets / Impacto do enxerto de tecido mole na preservação de alvéolos comprometidos

ABSTRACT The aim of this pilot study was to evaluate the impact of the association of free gingival graft (FGG) or collagen-matrix xenograft (CMX) to deproteinized bovine bone graft (DBBG) on the preservation of post-extraction sockets with facial-wall defects. Sixteen patients who presented a maxillary tooth with a facial bone defect and indication of extraction were selected. After the surgical procedure, all the post-extraction sockets were filled with DBBG and covered with a collagen membrane. The cervical part of the socket was then sealed with either FGG or CMX. Clinical and tomographic analyses were performed at baseline and 4 months after the grafting procedure. The FGG sockets showed higher values for the width of the bone ridge than the CMX sockets at 4 months. There was no difference regarding biopsy composition. In conclusion, regardless of the type of soft tissue graft used, socket preservation with DBBG at sites presenting facial bone defects enabled implant placement without further guided bone regeneration, whether the sockets were sealed with FGG or CMX.

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