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Biomedical subjects

V D Williams

Publications and source records attributed to V D Williams.

26 records · Page 2Linked to original sources
PubMedDate not supplied

Review of dentinal bonding in vitro: the substrate.

This article reviews common substrates and testing conditions used in dentinal bond strength studies in vitro. The available literature supports the use of freshly extracted, hydrated human teeth for studies in vitro. No one testing condition has proven superior accuracy over the others. Evidence is presented to support the implementation of infection control measures when handling the substrates.

Dental Bonding↗
PubMedDate not supplied

Tensile strengths of three luting agents for adhesion fixed partial dentures.

This study investigated the effects of thermal stress and specimen storage time on the tensile bond strength of three prosthodontic adhesives: Comspan (LD Caulk), Panavia Opaque (Kuraray), and Super-Bond (Sun Medical). Rexillium III alloy cylinders were cast, bonded end-to-end, and subsequently tested for tensile strength. Storage conditions of 2 and 30 days at 37 degrees C were evaluated. Half of the specimens were thermocycled for 24 hours (1,080 cycles) between 5 and 60 degrees C. Mean bond strengths and mode of failures were recorded. Significant differences related to the adhesive systems and the specimen storage time were noted. Thermocycling did not significantly affect the bond strength of the systems tested.

Dental Cements↗
PubMedDate not supplied

Acid-etched, resin bonded cast metal prostheses: a retrospective study of 5- to 15-year-old restorations.

Eighty-five resin bonded prostheses were evaluated in a retrospective study over a 15-year period. All had been in function for at least 4.5 years. Multifactorial variables were studied to ascertain their effect on debonding and the health of the oral tissues. The results showed: (1) the caries rate of the retainer teeth was 6%, (2) the mean gingival indices for the prostheses were significantly higher (P > .0001) than those of the remaining dentition, (3) 61% of the restorations had not debonded (if failure resulting from trauma was not included, the incidence of debonding dropped to 19%), and (4) all patients liked their prostheses.

Analysis of Variance↗