title: Reinforcement effects of fiberglass on telescopic dentures using a three-dimensional finite element analysis and fracture test.
abstract: The purpose of this study was to evaluate the reinforcing effect of fiberglass on composite resin retainers of the telescopic dentures. A finite element method was used to assess the effect of the abutment height and the embedment of the fiberglass on the stress distributions of the retainers. The experimental retainers of Poly(methylmethacrylate), composite resin (CR) and the fiber-reinforced composite resin (FRC) were used in the fracture test. The fracture load of the FRC retainers were significantly greater than those of the other retainers. The embedment of the fiberglass reduced the stress at the upper surface of the CR retainers. The fracture origin in the CR retainers was seen on the upper surface, while that of the FRC was at the cervical region near the abutment. These results suggest that the change in the fracture pass by the fiberglass increased the fracture resistance of the CR retainer.
authors.affiliation: Removal Partial Denture Prosthodontics, Department of Masticatory Function Rehabilitation, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo 113-8549, Japan. nagata.rpro@tmd.ac.jp
authors.forename: Kohji
authors.initials: K
authors.lastname: Nagata
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Takahashi
authors.forename: Masahiro
authors.initials: M
authors.lastname: Ona
authors.forename: Hiroyasu
authors.initials: H
authors.lastname: Hosomi
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Wakabayashi
authors.forename: Yoshimasa
authors.initials: Y
authors.lastname: Igarashi
mesh_terms: D003188:Composite Resins / Q000737:chemistry*; D000044:Dental Abutments; D019232:Dental Restoration Failure; D003819:Denture Bases; D003779:Denture Design; D003828:Denture, Overlay; D003832:Denture, Partial, Removable; D020342:Finite Element Analysis; D005898:Glass; D006801:Humans; D016474:Weight-Bearing
chemical_list: D003188:Composite Resins; C009753:fiberglass