title: Clinical assessment of postoperative sensitivity in posterior composite restorations.
abstract: This incidence of postoperative sensitivity was evaluated in resin-based posterior restorations. Two hundred and ninety-two direct restorations were evaluated in premolars and molars. A total of 143 Class I and 149 Class II restorations (MO/OD and MOD) were placed in patients ranging in age from 30 to 50 years. After the cavity preparations were completed, a rubber dam was placed, and the preparations were restored using a total-etch system (Prime & Bond NT) and a resin-based restorative material (TPH Spectrum). The patients were contacted after 24 hours and 7, 30 and 90 days postoperatively and questioned regarding the presence of sensitivity and the stimuli that triggered that sensitivity. The Chi-square and Fisher's Exact Test were used for statistical analysis. Evaluation at 24 hours after restorative treatment revealed statistically significant differences among the types of cavity preparations restored and the occurrence of postoperative sensitivity (p = 0.0003), with a higher frequency of sensitivity in Class II MOD restorations (26%), followed by Class II MO/DO (15%) and Class I restorations (5%). At 7, 30 and 90 days after restorative treatment, there was a decrease in the occurrence of sensitivity for all groups. The percentage of sensitivity among the groups was not significantly different. This study shows that the occurrence of sensitivity is correlated with the complexity of the restoration.
authors.affiliation: Department of Restorative Dentistry, Araçatuba Dental School-UNESP, Araçatuba, SP, Brazil. alfbriso@foa.unesp.br
authors.forename: André Luiz Fraga
authors.initials: AL
authors.lastname: Briso
authors.forename: Sandra Rahal
authors.initials: SR
authors.lastname: Mestrener
authors.forename: Giovana
authors.initials: G
authors.lastname: Delício
authors.forename: Renato Herman
authors.initials: RH
authors.lastname: Sundfeld
authors.forename: Ana Karina
authors.initials: AK
authors.lastname: Bedran-Russo
authors.forename: Rodrigo Sversut
authors.initials: RS
authors.lastname: de Alexandre
authors.forename: Glaucia Maria Bovi
authors.initials: GM
authors.lastname: Ambrosano
mesh_terms: D000134:Acid Etching, Dental; D000328:Adult; D001641:Bicuspid; D003080:Cold Temperature; D003188:Composite Resins / Q000737:chemistry; D003736:Dental Cavity Lining; D003737:Dental Cavity Preparation / Q000009:adverse effects / Q000145:classification; D003793:Dental Restoration, Permanent / Q000009:adverse effects / Q000145:classification*; D003807:Dentin Sensitivity / Q000209:etiology*; D017220:Dentin-Bonding Agents / Q000737:chemistry; D005500:Follow-Up Studies; D006358:Hot Temperature; D006801:Humans; D008409:Mastication; D008434:Matrix Bands; D008875:Middle Aged; D008963:Molar; D019558:Occlusal Adjustment; D011109:Polymethacrylic Acids / Q000737:chemistry; D016733:Rubber Dams
chemical_list: D003188:Composite Resins; D017220:Dentin-Bonding Agents; D011109:Polymethacrylic Acids; C425843:Prime and Bond NT; C467914:TPH spectrum