title: Comparison between two surgical techniques for root coverage with an acellular dermal matrix graft.
abstract: OBJECTIVE
  The aim of this randomized, controlled, clinical study was to compare two surgical techniques with the acellular dermal matrix graft (ADMG) to evaluate which technique could provide better root coverage.
  
  
  METHODS
  Fifteen patients with bilateral Miller Class I gingival recession areas were selected. In each patient, one recession area was randomly assigned to the control group, while the contra-lateral recession area was assigned to the test group. The ADMG was used in both groups. The control group was treated with a broader flap and vertical-releasing incisions, and the test group was treated with the proposed surgical technique, without releasing incisions. The clinical parameters evaluated before the surgeries and after 12 months were: gingival recession height, probing depth, relative clinical attachment level and the width and thickness of keratinized tissue.
  
  
  RESULTS
  There were no statistically significant differences between the groups for all parameters at baseline. After 12 months, there was a statistically significant reduction in recession height in both groups, and there was no statistically significant difference between the techniques with regard to root coverage.
  
  
  CONCLUSIONS
  Both surgical techniques provided significant reduction in gingival recession height after 12 months, and similar results in relation to root coverage.
authors.affiliation: Department of Bucco-Maxillo-Facial Surgery and Traumatology and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Patrícia F
authors.initials: PF
authors.lastname: Andrade
authors.forename: Maria Emília M C
authors.initials: ME
authors.lastname: Felipe
authors.forename: Arthur B
authors.initials: AB
authors.lastname: Novaes
authors.forename: Sérgio L S
authors.initials: SL
authors.lastname: Souza
authors.forename: Mário
authors.initials: M
authors.lastname: Taba
authors.forename: Daniela B
authors.initials: DB
authors.lastname: Palioto
authors.forename: Márcio F M
authors.initials: MF
authors.lastname: Grisi
mesh_terms: D000328:Adult; D001672:Biocompatible Materials / Q000627:therapeutic use*; D003094:Collagen / Q000627:therapeutic use*; D005260:Female; D005881:Gingiva / Q000601:surgery; D005889:Gingival Recession / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D019647:Oral Surgical Procedures / Q000379:methods*; D017622:Periodontal Attachment Loss / Q000601:surgery*
chemical_list: C440568:Alloderm; D001672:Biocompatible Materials; D003094:Collagen