title: A Randomized Comparative Study of Two Techniques to Optimize the Root Coverage Using a Porcine Collagen Matrix.
abstract: The aim of this randomized controlled clinical study was to compare the extended flap technique (EFT) with the coronally advanced flap technique (CAF) using a porcine collagen matrix (PCM) for root coverage. Twenty patients with two bilateral gingival recessions, Miller class I or II on non-molar teeth were treated with CAF+PCM (control group) or EFT+PCM (test group). Clinical measurements of probing pocket depth (PPD), clinical attachment level (CAL), recession height (RH), keratinized tissue height (KTH), keratinized mucosa thickness (KMT) were determined at baseline, 3 and 6 months post-surgery. At 6 months, the mean root coverage for test group was 81.89%, and for control group it was 62.80% (p<0.01). The change of recession depth from baseline was statistically significant between test and control groups, with an mean of 2.21 mm gained at the control sites and 2.84 mm gained at the test sites (p=0.02). There were no statistically significant differences for KTH, PPD or CAL comparing the two therapies. The extended flap technique presented better root coverage than the coronally advanced flap technique when PCM was used.
authors.affiliation: Department of Surgery, Oral and Maxillofacial Traumatology and Periodontology, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Danilo Maeda
authors.initials: DM
authors.lastname: Reino
authors.affiliation: Department of Surgery, Oral and Maxillofacial Traumatology and Periodontology, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Luciana Prado
authors.initials: LP
authors.lastname: Maia
authors.affiliation: Department of Surgery, Oral and Maxillofacial Traumatology and Periodontology, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Patrícia Garani
authors.initials: PG
authors.lastname: Fernandes
authors.affiliation: Department of Surgery, Oral and Maxillofacial Traumatology and Periodontology, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Sergio Luis Scombatti de
authors.initials: SL
authors.lastname: Souza
authors.affiliation: Department of Surgery, Oral and Maxillofacial Traumatology and Periodontology, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Mario
authors.initials: M
authors.lastname: Taba Junior
authors.affiliation: Department of Surgery, Oral and Maxillofacial Traumatology and Periodontology, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Daniela Bazan
authors.initials: DB
authors.lastname: Palioto
authors.affiliation: Department of Surgery, Oral and Maxillofacial Traumatology and Periodontology, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Marcio Fermandes de Moraes
authors.initials: MF
authors.lastname: Grisi
authors.affiliation: Department of Surgery, Oral and Maxillofacial Traumatology and Periodontology, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Arthur Belém
authors.initials: AB
authors.lastname: Novaes
mesh_terms: D000328:Adult; D000818:Animals; D003094:Collagen; D005260:Female; D005889:Gingival Recession / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013552:Swine; D014092:Tooth Root / Q000601:surgery*
chemical_list: D003094:Collagen