title: A 5-year study comparing a posterior composite resin and an amalgam.
abstract: Eighty class I and class II light-cured posterior composite resin restorations were compared with 43 class I and class II amalgam restorations during a 5-year period after placement. The results of this clinical study showed that both materials were satisfactory during the time period and that the only significant statistical differences are a poorer marginal integrity for the amalgam and a greater wear rate for the composite resin.
authors.affiliation: Department of Restorative Dentistry, Southern Illinois University, School of Dental Medicine, Alton.
authors.forename: R D
authors.initials: RD
authors.lastname: Norman
authors.forename: J S
authors.initials: JS
authors.lastname: Wright
authors.forename: R J
authors.initials: RJ
authors.lastname: Rydberg
authors.forename: L L
authors.initials: LL
authors.lastname: Felkner
mesh_terms: D000328:Adult; D003188:Composite Resins / Q000737:chemistry; D003722:Dental Alloys / Q000737:chemistry; D003723:Dental Amalgam / Q000737:chemistry; D001840:Dental Bonding; D003736:Dental Cavity Lining; D003793:Dental Restoration, Permanent / Q000706:statistics & numerical data; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D013499:Surface Properties; D013997:Time Factors; D014520:Urethane / Q000737:chemistry
chemical_list: D003188:Composite Resins; D003722:Dental Alloys; C056413:Occlusin; C033470:Dispersalloy; D014520:Urethane; D003723:Dental Amalgam