title: Bond strengths and pulpal response of light-cured composite resin inlays in primary molars.
abstract: The purpose of this study was to: 1) determine the most effective combination of composite resin and adhesive resin cement in the cementation process when fabricating esthetic inlays in severely broken down posterior primary teeth; 2) evaluate the pulpal response to adhesive resin cement in the primary teeth of young dogs. In Part I of the study, P-30 and Dentacolor composite resin inlays were evaluated with regard to their bonding strengths with Panavia-EX and Chemiace adhesive resins. Test samples of the composite resin inlays were prepared in molds according to the manufacturer's instructions. Each sample was polished on a flat, wet surface of 320 grit carborundum until a uniformly flat surface, perpendicular to the long axis of the cylinder was attained. Composite resin plugs, similarly fabricated, were bonded to the test samples using either Panavia-EX or Chemiace adhesive resin cements. A total of 160 samples were divided into four groups. Three of the groups were tested for bonding strength at intervals of 24 hours, 7 days and 30 days. The fourth group was thermocycled through 4 degrees C and 60 degrees C immersion periods. The results were analyzed using Tukey's studentized range test with an alpha (significance level) of 0.05. In Part II of the study, the pulpal response to Panavia-EX as a luting medium was compared with that of HY-Bond polycarboxylate cement. Cavities were prepared in 92 teeth from 8 young dogs and contralateral pairs of teeth were restored with Panavia-EX and HY-Bond polycarboxylate cement respectively.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Fukuoka Dental College, Japan.
authors.forename: W
authors.initials: W
authors.lastname: Motokawa
authors.forename: R L
authors.initials: RL
authors.lastname: Braham
authors.forename: B
authors.initials: B
authors.lastname: Teshima
mesh_terms: D000818:Animals; D003188:Composite Resins; D001840:Dental Bonding; D004285:Dogs; D007284:Inlays; D008422:Materials Testing; D008963:Molar; D013718:Tensile Strength; D014094:Tooth, Deciduous
chemical_list: D003188:Composite Resins