title: Comparison of a novel photogrammetric technique and modified USPHS criteria to monitor the wear of restorations.
abstract: This paper describes monitoring the wear of restorations borne by partial dentures over a 12 months period using a novel photogrammetric technique and modified United States Public Health Service (USPHS) criteria. The performance of Class II restorations of Dispersalloy was compared with that of similar restorations of either KetacFil or Occlusin. The photogrammetric technique highlighted differences in performance not detected by the modified USPHS criteria. It is concluded that the photogrammetric technique should prove valuable in the in vivo assessment of the performance of restorative materials but that further refinement of the method is required particularly with regard to the orientation of replicas for sequential measurements.
authors.affiliation: Dental School, Newcastle upon Tyne, UK.
authors.forename: R G
authors.initials: RG
authors.lastname: Chadwick
authors.forename: J F
authors.initials: JF
authors.lastname: McCabe
authors.forename: A W
authors.initials: AW
authors.lastname: Walls
authors.forename: H L
authors.initials: HL
authors.lastname: Mitchell
authors.forename: R
authors.initials: R
authors.lastname: Storer
mesh_terms: D003188:Composite Resins / Q000737:chemistry*; D003722:Dental Alloys / Q000737:chemistry; D003723:Dental Amalgam / Q000737:chemistry; D003793:Dental Restoration, Permanent; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D008298:Maleates / Q000737:chemistry; D003765:Models, Dental; D008963:Molar; D010780:Photogrammetry / Q000379:methods*; D013499:Surface Properties; D013997:Time Factors; D014481:United States; D014492:United States Public Health Service; D014520:Urethane / Q000737:chemistry
chemical_list: D003188:Composite Resins; D003722:Dental Alloys; D005899:Glass Ionomer Cements; D008298:Maleates; C056413:Occlusin; C033470:Dispersalloy; D014520:Urethane; D003723:Dental Amalgam; C040964:Ketac-Fil