title: Effects of light curing method and resin composite composition on composite adaptation to the cavity wall.
abstract: This study aimed to evaluate the effects of the light curing method and resin composite composition on marginal sealing and resin composite adaptation to the cavity wall. Cylindrical cavities were prepared on the buccal or lingual cervical regions. The teeth were restored using Clearfil Liner Bond 2V adhesive system and filled with Clearfil Photo Bright or Palfique Estelite resin composite. The resins were cured using the conventional or slow-start light curing method. After thermal cycling, the specimens were subjected to a dye penetration test. The slow-start curing method showed better resin composite adaptation to the cavity wall for both composites. Furthermore, the slow-start curing method resulted in significantly improved dentin marginal sealing compared with the conventional method for Clearfil Photo Bright. The light-cured resin composite, which exhibited increased contrast ratios duringpolymerization, seems to suggest high compensation for polymerization contraction stress when using the slow-start curing method.
authors.affiliation: Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU).
authors.forename: Takako
authors.initials: T
authors.lastname: Yoshikawa
authors.forename: Makoto
authors.initials: M
authors.lastname: Morigami
authors.forename: Alireza
authors.initials: A
authors.lastname: Sadr
authors.forename: Junji
authors.initials: J
authors.lastname: Tagami
mesh_terms: D055117:Curing Lights, Dental; D019279:Resin Cements / Q000737:chemistry*
chemical_list: D019279:Resin Cements