Alveolar ridge and keratinized gingiva preservation using collagen matrix and inorganic bone substitute in flapless extractions: A case series of exposed biomaterials

Authors: Mariana Moraes de Souza, Cristhiam de Jesus Hernandez Martinez, Valessa Florindo Carvalho, Flávia Aparecida Chaves Furlaneto Messora, Daniela Bazan Palioto Bulle, Michel Reis Messora, Sérgio Luís Scombatti de Souza, Arthur Belém Novaes Jr, Mario Taba

Abstract

Aim: To evaluate the dimensional changes after alveolar ridge preservation (ARP) with flapless and flapped techniques, using demineralized bovine bone mineral (DBBM) and a collagen matrix (CM) intentionally left exposed. Materials and methods: In this case series, randomly selected patients were divided into one of two surgical approaches, Group 1 (G1): ARP flapless and Group 2 (G2): ARP flapped. Clinical and cone beam computed tomography assessments were performed at 1 week, 4 and 24 months after ARP. Evaluations of postoperative discomfort with visual analogue scale (VAS) were also performed. Results: Surgical procedures run uneventfully with no healing complications of the treated sockets. There were reductions in the horizontal and vertical dimensions of the socket and in the width of the keratinized gingiva, but they were smaller for G1. The thickness of the keratinized gingiva increased in G1 and reduced in G2. Only the VAS had a statistically significant difference between the groups (P=0.03). Conclusions: The ARP limited vertical and horizontal socket changes, regardless of the surgical technique used when the biomaterials where left exposed. The flapless approach seems to provide better results regarding dimensional changes and significantly less discomfort.

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