title: Comparison between micro- and macrosurgical techniques for the treatment of localized gingival recessions using coronally positioned flaps and enamel matrix derivative.
abstract: BACKGROUND
  The aim of this study is to compare the macro- and microsurgery techniques for root coverage using a coronally positioned flap (CPF) associated with enamel matrix derivative (EMD).
  
  
  METHODS
  Thirty patients were selected for the treatment of localized gingival recessions (GRs) using CPF associated to EMD. Fifteen patients were randomly assigned to the test group (TG), and 15 patients were randomly assigned to the control group (CG). The microsurgical approach was performed in the TG, and the conventional macrosurgical technique was performed in the CG. The clinical parameters evaluated before surgery and after 6 months were GR, probing depth, relative clinical attachment level, width of keratinized tissue (WKT), and thickness of keratinized tissue (TKT). The discomfort evaluation was performed 1 week postoperative.
  
  
  RESULTS
  There were no statistically significant differences between groups for all parameters at baseline. At 6 months, there was no statistically significant difference between the techniques in achieving root coverage. The percentage of root coverage was 92% and 83% for TG and CG, respectively. After 6 months, there was a statistically significant increase of WKT and TKT in TG only. Both procedures were well tolerated by all patients.
  
  
  CONCLUSIONS
  The macro- and microsurgery techniques provided a statistically significant reduction in GR height. After 6 months, there was no statistically significant difference between the techniques regarding root coverage, and the microsurgical technique demonstrated a statistically significant increase in WKT and TKT.
authors.affiliation: Department of Bucco-Maxillofacial Surgery and Traumatology and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil. tanakam@dent.osaka-u.ac.jp
authors.forename: Patrícia F
authors.initials: PF
authors.lastname: Andrade
authors.forename: Márcio F M
authors.initials: MF
authors.lastname: Grisi
authors.forename: Andrea M
authors.initials: AM
authors.lastname: Marcaccini
authors.forename: Patrícia G
authors.initials: PG
authors.lastname: Fernandes
authors.forename: Danilo M
authors.initials: DM
authors.lastname: Reino
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: Arthur B
authors.initials: AB
authors.lastname: Novaes
mesh_terms: D020341:Absorbable Implants; D000328:Adult; D003746:Dental Enamel Proteins / Q000627:therapeutic use*; D005260:Female; D005500:Follow-Up Studies; D005881:Gingiva / Q000473:pathology; D005889:Gingival Recession / Q000145:classification / Q000473:pathology / Q000601:surgery*; D016557:Guided Tissue Regeneration, Periodontal / Q000379:methods; D006801:Humans; D008297:Male; D008866:Microsurgery / Q000295:instrumentation / Q000379:methods*; D010149:Postoperative Pain / Q000209:etiology; D017622:Periodontal Attachment Loss / Q000601:surgery; D010514:Periodontal Pocket / Q000601:surgery; D013524:Surgical Flaps; D013536:Suture Techniques; D013537:Sutures; D014092:Tooth Root / Q000473:pathology; D014945:Wound Healing / Q000502:physiology; D055815:Young Adult
chemical_list: D003746:Dental Enamel Proteins; C109069:enamel matrix proteins