title: Class II composite marginal ridge failure: conventional vs. proximal box only preparation.
abstract: This study evaluated the force necessary to cause failure at the marginal ridge of teeth prepared with conventional class II cavity design and teeth prepared with proximal box-only or vertical slot preparation. The teeth were restored with Herculite XR or Tetric Ceram. Mean failure loads were not found to be statistically significant between conventional class II preparations and proximal box-only preparations. The teeth restored with Tetric Ceram were significantly more resistant to the vertical load than teeth restored with Herculite.
authors: Department of Pediatric Dentistry, Tufts University School of Dental Medicine, Boston, MA 02111, USA.
authors: M D
authors: MD
authors: Castillo
mesh_terms: D001641:Bicuspid; D003188:Composite Resins; D003737:Dental Cavity Preparation / Q000379:methods*; D019232:Dental Restoration Failure; D003799:Dental Stress Analysis; D006801:Humans; D008422:Materials Testing; D019279:Resin Cements
chemical_list: D003188:Composite Resins; C092987:Optibond; D019279:Resin Cements; C090969:Tetric; C065770:Herculite XR