title: A 12-month clinical trial examining the effects of a surface sealant on Class I composite resin restorations.
abstract: A split-mouth, double-blind trial evaluated the effects of a surface sealant on the clinical performance of Class I composite resin restorations. In 16 patients, 27 pairs of maxillary and mandibular molars or premolars with Class I carious lesions or unsatisfactory restorations were restored with composite resin. For each pair, 1 surface was sealed with surface sealant. Clinical evaluations of marginal integrity, marginal discoloration, anatomical form, and secondary caries were performed by 2 experienced operators using modified US Public Health Service criteria 1-2 weeks and 6 and 12 months after treatment. Data were analyzed with the McNemar test (P < 0.05). After 6 months, only 1 (4%) sealed restoration presented a Bravo rating for marginal integrity. After 12 months, the Bravo ratings for marginal integrity were 2 (7%) for sealed restorations and 1 (4%) for nonsealed restorations. Restorations received a score of Alfa for all other parameters at all time periods. There were no statistically significant differences within or between the sealed and nonsealed groups (P = 1.0). The use of a surface sealant did not improve the clinical performance of posterior composite resin Class I restorations.
authors.forename: Flavia
authors.initials: F
authors.lastname: Nahsan
authors.forename: Linda
authors.initials: L
authors.lastname: Wang
authors.forename: Karin
authors.initials: K
authors.lastname: Modena
authors.forename: Luciana
authors.initials: L
authors.lastname: Francisconi-dos-Rios
authors.forename: Luciana
authors.initials: L
authors.lastname: da Silva
authors.forename: Marcela
authors.initials: M
authors.lastname: Calabria
authors.forename: Leslie
authors.initials: L
authors.lastname: Casas-Apayco
authors.forename: Rafael Francisco Lia
authors.initials: RF
authors.lastname: Mondelli
mesh_terms: D000293:Adolescent; D000328:Adult; D003188:Composite Resins / Q000627:therapeutic use*; D003793:Dental Restoration, Permanent / Q000379:methods*; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010895:Pit and Fissure Sealants / Q000627:therapeutic use*; D013997:Time Factors; D055815:Young Adult
chemical_list: D003188:Composite Resins; D010895:Pit and Fissure Sealants
keywords: Class I restoration; US Public Health Service criteria; composite resin; surface-penetrating sealant