title: Fracture resistance of CAD/CAM-fabricated fiber-reinforced composite denture retainers.
abstract: The purpose of this study was to evaluate the fracture resistance of computer-aided design/computer-assisted manufacture (CAD/CAM)-fabricated fiber-reinforced composite (FRC) denture retainers. Distal extension dentures incorporating two telescopic retainers and two molar pontics, with or without fiberglass, were fabricated by CAD/CAM or by the conventional polymerization method. The dentures were subjected to a vertical load on the second molar pontic until fracture. Within each manufacturing method, embedment of the FRC increased the mean final fracture load, suggesting the reinforcing effect of fiberglass. The polymerized dentures with FRC showed greater mean final fracture load than the CAD/CAM dentures with FRC.
authors.affiliation: Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Kohji
authors.initials: K
authors.lastname: Nagata
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Wakabayashi
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Takahashi
authors.forename: Pekka K
authors.initials: PK
authors.lastname: Vallittu
authors.forename: Lippo V J
authors.initials: LV
authors.lastname: Lassila
mesh_terms: D003188:Composite Resins / Q000737:chemistry*; D017076:Computer-Aided Design; D003764:Dental Materials / Q000737:chemistry*; D003799:Dental Stress Analysis / Q000295:instrumentation; D003779:Denture Design; D003781:Denture Retention / Q000295:instrumentation*; D003829:Denture, Partial; D005898:Glass / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D013314:Stress, Mechanical
chemical_list: D003188:Composite Resins; D003764:Dental Materials; C444701:Filtek Z250; C496140:everStick; C009753:fiberglass