title: Does refurbishing composites lead to short-term effects or long-lasting improvement?
abstract: OBJECTIVE
  To evaluate the clinical performance of refurbished resin composite restorations compared to untreated (negative control) restorations over a period of 10 years.
  
  
  METHODS
  26 subjects (having a total of 52 composite restorations) were recruited. All restorations in the refurbished group showed clinical features rated bravo according to modified USPHS criteria. Untreated restorations were those that had been deemed acceptable (alpha or bravo rated); these were used as controls. Two examiners performed assessments at baseline and during the 5th and 10th years after the intervention. Wilcoxon tests were performed for within-group comparisons, Friedman tests were used for multiple within-group comparisons, and Mann Whitney tests were used for between-groups comparisons. Kaplan-Meier survival curves were calculated, and the Mantel-Cox test was used to compare curves. P < 0.05 was considered statistically significant.
  
  
  RESULTS
  In both groups, 10-year scores were significantly different from baseline scores in all clinical parameters except secondary caries. There were no statistically significant differences in the survival analysis of groups (log-rank test, P = 0.376). Refurbishing treatment improved the anatomy, roughness, luster, and marginal adaptation of restorations with a short-term effect, with most properties rated acceptable after 10 years of clinical service. The clinical characteristics were similar for all groups at the 10th year.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Fernández
authors.forename: Eduardo Fernández
authors.initials: EF
authors.lastname: Godoy
authors.forename: Patricio
authors.initials: P
authors.lastname: Vildósola
authors.forename: Patricio Vildósola
authors.initials: PV
authors.lastname: Grez
authors.forename: Cristian
authors.initials: C
authors.lastname: Bersezio
authors.forename: Cristian Bersezio
authors.initials: CB
authors.lastname: Miranda
authors.forename: Valeria V
authors.initials: VV
authors.lastname: Gordan
authors.forename: Ivar A
authors.initials: IA
authors.lastname: Mjör
authors.forename: Osmir B
authors.initials: OB
authors.lastname: Oliveira
authors.forename: Rafael R
authors.initials: RR
authors.lastname: Moraes
authors.forename: Osmir Batista Junior
authors.initials: OB
authors.lastname: Oliveira
authors.forename: Claudia
authors.initials: C
authors.lastname: Letelier
authors.forename: Claudia Letelier
authors.initials: CL
authors.lastname: Pardo
authors.forename: Juan
authors.initials: J
authors.lastname: Estay
authors.forename: Juan Estay
authors.initials: JE
authors.lastname: Larenas
authors.forename: Gustavo
authors.initials: G
authors.lastname: Moncada
authors.forename: Gustavo Moncada
authors.initials: GM
authors.lastname: Cortés
authors.forename: Javier
authors.initials: J
authors.lastname: Martín
authors.forename: Javier Martin
authors.initials: JM
authors.lastname: Casielles
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003188:Composite Resins; D003793:Dental Restoration, Permanent; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D055815:Young Adult
chemical_list: D003188:Composite Resins