title: Three-year clinical performance of composite restorations placed by undergraduate dental students.
abstract: This retrospective study evaluated the clinical performance and the reasons for failure of anterior and posterior composite restorations placed by undergraduate dental students over a 3-year period. All cavities were restored using Prime & Bond 2.1 and TPH (Dentsply), according to the manufacturer's indications. One hundred and two patients who had received composite restorations by third and forth year undergraduate students were recalled and examined to analyze the quality of the restorations. The restorations were evaluated using the modified USPHS system. Two hundred and fifty-six composite restorations, 170 in anterior teeth and 86 in posterior teeth, were evaluated. Eighty-five percent of the restorations were considered satisfactory after 3 years. Class II and class IV restorations presented the highest prevalence of failure. Loss of the restoration and deficient marginal adaptation were the main causes of failure. No restoration failed due to secondary caries. Most restorations placed by dental students were considered satisfactory after long-term evaluation. Failure was more prevalent in larger restorations and was not associated with secondary caries.
authors.affiliation: Department of Public Health Dentistry, Lutheran University of Brazil, Cachoeira do Sul, RS, Brazil.
authors.forename: Flávio Renato Reis de
authors.initials: FR
authors.lastname: Moura
authors.forename: Ana Regina
authors.initials: AR
authors.lastname: Romano
authors.forename: Rafael Guerra
authors.initials: RG
authors.lastname: Lund
authors.forename: Evandro
authors.initials: E
authors.lastname: Piva
authors.forename: Sinval Adalberto
authors.initials: SA
authors.lastname: Rodrigues Júnior
authors.forename: Flávio Fernando
authors.initials: FF
authors.lastname: Demarco
mesh_terms: D000096:Acetone; D000328:Adult; D016009:Chi-Square Distribution; D003188:Composite Resins; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000145:classification / Q000379:methods*; D003814:Dentistry, Operative / Q000193:education*; D004497:Education, Dental / Q000379:methods*; D006801:Humans; D008875:Middle Aged; D011109:Polymethacrylic Acids; D012189:Retrospective Studies; D013335:Students, Dental; D055815:Young Adult
chemical_list: D003188:Composite Resins; D011109:Polymethacrylic Acids; C467914:TPH spectrum; C444444:prime and bond 2.1; D000096:Acetone