title: Dentin contamination protection after mechanical preparation for veneering.
abstract: OBJECTIVE
  To evaluate in vivo the efficacy in preventing post-operative sensitivity and bacterial invasion of primed dentin that was left unprotected for 4 days after laminate veneer preparation.
  
  
  METHODS
  Twelve vital, periodontically involved anterior teeth were prepared for experimental laminate veneers and divided into three groups: (1) Control group, in which the prepared surfaces were left unprotected after preparation; (2) Prepared dentin surfaces were cleaned with Tubulicid Red Label and covered with Tubulitec Primer; (3) All-Bond 2 Primer was applied to the prepared dentin surface. Post-operative sensitivity was evaluated immediately and a second appointment, 4 days later. The teeth were then extracted and examined by SEM.
  
  
  RESULTS
  The application of a primer (Groups 2 and 3) prevented all sensitivity. After 4 days, the teeth in Group 1 were still sensitive to air blasts. Bacterial penetration into the unprotected tubules was observed in Group 1, but not in Groups 2 and 3.
authors.affiliation: Department of Restorative Dentistry, University of Siena, Italy.
authors.forename: M C
authors.initials: MC
authors.lastname: Cagidiaco
authors.forename: M
authors.initials: M
authors.lastname: Ferrari
authors.forename: R
authors.initials: R
authors.lastname: Garberoglio
authors.forename: C L
authors.initials: CL
authors.lastname: Davidson
mesh_terms: D000328:Adult; D001419:Bacteria / Q000302:isolation & purification; D003793:Dental Restoration, Permanent; D003801:Dental Veneers; D003804:Dentin / Q000382:microbiology* / Q000648:ultrastructure; D003807:Dentin Sensitivity / Q000209:etiology; D006801:Humans; D008855:Microscopy, Electron, Scanning; D008875:Middle Aged; D011183:Postoperative Complications / Q000209:etiology; D014081:Tooth Extraction; D019246:Tooth Preparation / Q000379:methods*