title: Durability of tunnel restorations in general practice: a three-year multicenter study.
abstract: Twelve dentists, clinically experienced and familiar with the tunnel technique, placed 374 tunnel restorations in permanent teeth. Mean age of the patients was 19.1 years (range 10-74). The filling material used was a glass cermet cement, Ketac Silver. After 1, 2 and 3 years the teeth were controlled by the dentists. The bitewing radiographs from baseline, 1, 2 and 3 years were also analyzed by 2 of the authors, independently. The baseline radiographs showed technical defects in 6% and indicated remaining dentin caries in 8% of the restorations. After 3 years, 305 restorations were accessible for examination. The cumulative replacement rate was 20%. The main reasons for replacement were marginal ridge fracture (14%) and dentin caries (3%). The number of restorations showing untreated progressive caries increased during the study. After 3 years, untreated dentin caries was seen in 28 cases (11%) and almost half of the left enamel lesions showed progression.
authors: Department of Pedodontics, Institute of Oral Biology, Umeå, Sweden. carin.pilebro@oralbio.umu.se
authors: C E
authors: CE
authors: Pilebro
authors: J W
authors: JW
authors: van Dijken
authors: R
authors: R
authors: Stenberg
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D016722:Cermet Cements; D002648:Child; D003188:Composite Resins; D003731:Dental Caries / Q000000981:diagnostic imaging / Q000473:pathology / Q000628:therapy*; D003737:Dental Cavity Preparation / Q000379:methods*; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000379:methods*; D018450:Disease Progression; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D019233:Retreatment
chemical_list: D016722:Cermet Cements; D003188:Composite Resins