title: Clinical evaluation of ceramic inlays and onlays made with two systems: a one-year follow-up.
abstract: OBJECTIVE
  The aim of this study was to evaluate the clinical performance of ceramic inlays and onlays made with two systems: sintered (Duceram [D], DeguDent) and pressable (IPS Empress [IPS], Ivoclar-Vivadent) after 1 year.
  
  
  METHODS
  Seventy-four restorations - 37 IPS and 37 D - were cemented in 34 patients. Twenty-four premolars and 50 molars received Class II cavity preparations, totaling 28 onlays and 46 inlays. The restorations were evaluated by two independent investigators at baseline, 6 months, and 1 year, according to modified USPHS criteria. Fisher and McNemar statistical tests were employed to assess the survival rate.
  
  
  RESULTS
  After one year, 100% of the restorations were assessed and all the restorations were considered clinically excellent or acceptable. Among the analyzed criteria, only the following received "Bravo" ratings: marginal discoloration: IPS (24.32%), D (13.51%); marginal integrity: IPS (10.81%), D (8.11%); color match: IPS (5.41%), D (5.41%); surface texture: IPS (2.70%), D (10.81%). No "Charlie" or "Delta" scores were given to the restorations.
  
  
  CONCLUSIONS
  Among the analyzed criteria, only marginal discoloration differed statistically significantly from the results of the baseline examination for IPS Empress ceramic restorations (p = 0.008). No significant differences were found between the two ceramics. The two ceramic systems demonstrated excellent clinical performance after a period of 1 year.
authors.affiliation: Department of Operative Dentistry, School of Dentistry, Federal University of Bahia, BA, Brazil.
authors.forename: Maria Jacinta M Coelho
authors.initials: MJ
authors.lastname: Santos
authors.forename: Rafael Francisco Lia
authors.initials: RF
authors.lastname: Mondelli
authors.forename: Carlos Eduardo
authors.initials: CE
authors.lastname: Francischone
authors.forename: José Roberto Pereira
authors.initials: JR
authors.lastname: Lauris
authors.forename: Navarro Maria Fidela
authors.initials: NM
authors.lastname: de Lima
mesh_terms: D000328:Adult; D000538:Aluminum Silicates / Q000737:chemistry*; D003776:Dental Porcelain / Q000737:chemistry*; D019232:Dental Restoration Failure; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007284:Inlays; D008297:Male
chemical_list: D000538:Aluminum Silicates; C095718:Duceram; C075815:IPS-Empress ceramic; D003776:Dental Porcelain