title: A retrospective study of root coverage procedures using an image analysis system.
abstract: OBJECTIVE
  To investigate the efficacy of root coverage procedures and factors that may affect the clinical outcomes in non-experimental patients.
  
  
  METHODS
  Two hundred and eighty-seven root coverage surgical procedures in 215 adult patients were evaluated retrospectively. Descriptive statistics were used to determine the patient profile. Comparisons between surgeries were assessed, and the impact of different parameters on the probability of mean/complete root coverage and gingival augmentation was explored.
  
  
  RESULTS
  The mean percentage of root coverage was 72.29 (+/- 28)%. Complete root coverage was observed in 35.56% of the defects. The difference between the surgical procedures was not significant. The mean percentage of gingival augmentation was 106.18 (+/- 260)%. The difference between non-submerged grafts and the other techniques was significant (p<10(-3)). A significant negative impact of smoking, and maxillary teeth for both mean and complete root coverage were found. A significant positive impact of the tuberosity donor site was found for complete root coverage. Maxillary teeth and Miller's Class II and III were positive predictive factors for gingival augmentation.
  
  
  CONCLUSIONS
  Under non-experimental conditions, root coverage procedures are effective. Smoking, maxillary teeth, donor site, and Miller's Classes are prognostic factors that may affect the results.
authors: Department of Periodontology, Service of Odontology, Hôtel-Dieu Hospital, AP-HP, Paris 7 - Denis Diderot University, U.F.R. of Odontology, Paris, France.
authors: Stéphane
authors: S
authors: Kerner
authors: Alain
authors: A
authors: Borghetti
authors: Sandrine
authors: S
authors: Katsahian
authors: Daniel
authors: D
authors: Etienne
authors: Jacques
authors: J
authors: Malet
authors: Francis
authors: F
authors: Mora
authors: Virginie
authors: V
authors: Monnet-Corti
authors: Jean-Marc
authors: JM
authors: Glise
authors: Philippe
authors: P
authors: Bouchard
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003238:Connective Tissue / Q000637:transplantation*; D005260:Female; D005881:Gingiva / Q000637:transplantation*; D005889:Gingival Recession / Q000601:surgery*; D016557:Guided Tissue Regeneration, Periodontal / Q000379:methods; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D019647:Oral Surgical Procedures / Q000379:methods*; D023861:Photography, Dental; D011379:Prognosis; D012189:Retrospective Studies; D012907:Smoking; D013524:Surgical Flaps