title: Evaluation of post-operative sensitivity and secondary caries in posterior composite restorations: a 12 month study.
abstract: OBJECTIVE
  To evaluate post-operative sensitivity and secondary caries associated with posterior composite restoration.
  
  
  METHODS
  The study involved restoration of occlusal and proximo-occlusal caries on premolars and molars of 62 patients seen at the out-patient clinic of the restorative department of the Lagos University Teaching Hospital. The restorations were completed with a micro-hybrid light curing resin composite (Unolux BCS, UnoDent, England). Following total etch procedure and use of a type 2 (5th generation/one-bottle) adhesive. The USPHSC or modified Ryge criteria was employed for direct evaluation of the restorations over the 12 month period.
  
  
  RESULTS
  Post-operative sensitivity was 3.5% Bravo at baseline and 1.7% Bravo at 12 months. No significant change in result was recorded for post-operative sensitivity at the end of the evaluation period. 100% was recorded for the absence of secondary caries throughout the evaluation period up till the 6 th month when a failed restoration scored 1.7% Bravo. At 12 months Alpha scores for secondary caries was 98.3%.
  
  
  CONCLUSIONS
  Post-operative sensitivity was kept to a minimum and there were no occurrences of secondary caries.
authors.affiliation: Department of Restorative Dentistry, College of Medicine of the University of Lagos, Idi-araba, Nigeria.
authors.forename: L O
authors.initials: LO
authors.lastname: Agbaje
authors.forename: O P
authors.initials: OP
authors.lastname: Shaba
authors.forename: I C
authors.initials: IC
authors.lastname: Adegbulugbe
mesh_terms: D000328:Adult; D003188:Composite Resins; D003731:Dental Caries / Q000145:classification* / Q000209:etiology; D003737:Dental Cavity Preparation; D045662:Dental Etching / Q000379:methods*; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000145:classification / Q000379:methods*; D003807:Dentin Sensitivity; D017220:Dentin-Bonding Agents; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D008963:Molar; D009549:Nigeria; D011184:Postoperative Period; D016896:Treatment Outcome
chemical_list: D003188:Composite Resins; D017220:Dentin-Bonding Agents