title: An evaluation of a resorbable (semirigid) GTR membrane in human periodontal intraosseous defects: A clinicoradiological re-entry study.
abstract: OBJECTIVE
  To evaluate the effectiveness of a resorbable, semi rigid guided tissue regeneration (GTR) membrane in the treatment of periodontal intraosseous defects.
  
  
  METHODS
  Randomized controlled clinicoradiological re-entry study.
  
  
  METHODS
  Eight patients with bilateral, identical intraosseous defects were selected. The sides for test and control group were randomly allocated to treat either with bioresorbable semi rigid membrane (test group) or open flap debridement (control group). Radiographic analysis was done by comparing intraoral peri apical radiographs taken at baseline and at six months. Extended cone paralleling device with grid was used to standardize radiographs. Auto CAD software was used for the analysis.
  
  
  METHODS
  Paired-t test.
  
  
  RESULTS
  On surgical reentry at six months, the mean reduction in depth of the defect at the test site was 2.63 mm. The mean gain in Relative attachment level was 1.75 mm. The control sites showed a statistically insignificant gain. The mean percentage defect fill assessed on radiographs using auto CAD software was 15.54%.
  
  
  CONCLUSIONS
  The resorbable, semi-rigid GTR membrane can be effectively used for the treatment of human one-walled angular defects.
authors.affiliation: Department of Periodontics, V S Dental College and Hospital, Bangalore, India.
authors.forename: Vinayak S
authors.initials: VS
authors.lastname: Gowda
authors.forename: Vijay
authors.initials: V
authors.lastname: Chava
authors.forename: Ajeya E G
authors.initials: AE
authors.lastname: Kumara