title: The success of indirect restorations in posterior teeth: a systematic review of the literature.
abstract: OBJECTIVE
  Aim of the study was to evaluate the long-term reliability and effectiveness of inlays and onlays in ceramic and composite material, examining scientific studies published from 2004 to 2013. The results of this review were analyzed and compared with the important literature review proposed by Manhart in 2004.
  
  
  METHODS
  With this review it was possible to analyze a total sample of 5858 Class I and II restorations, made in the posterior region: 5295 ceramic and 563 composite restorations in 2377 patients. Works were evaluated using USPHS, modified USPHS and CDA criteria after a mean observation period of 5.4 years (5.9 years for ceramic restorations, 2.6 for composite restorations).
  
  
  RESULTS
  The arithmetic average of success was 94%, higher in ceramic restorations (94.9%) than composite materials (91.1%). The weighted average success rate was 95.3%, 92.8% for composite restorations and 96.3% for ceramic ones. The highest rates of success were found in ceramic restorations notwithstanding the longer observation period.
  
  
  CONCLUSIONS
  Indirect restorations have a low failure rate and they prove to be an excellent choice in the treatment of both class I and II lesions. During the last 6 years, the parameters related to these restorations have improved, with a 4% increase of success.
authors.affiliation: University of Rome "Tor Vergata", School of Dentistry/Operative and Esthetic Dentistry, Rome, Italy - framang@tin.it.
authors.forename: F
authors.initials: F
authors.lastname: Mangani
authors.forename: S
authors.initials: S
authors.lastname: Marini
authors.forename: N
authors.initials: N
authors.lastname: Barabanti
authors.forename: A
authors.initials: A
authors.lastname: Preti
authors.forename: A
authors.initials: A
authors.lastname: Cerutti
mesh_terms: D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent; D005500:Follow-Up Studies; D006801:Humans; D007284:Inlays; D008963:Molar; D016032:Randomized Controlled Trials as Topic; D012189:Retrospective Studies