[Polymerization exothermal reaction of dental prosthetic resin for temporary crowns. A comparative evaluation].

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  • Additional Information
    • Transliterated Title:
      La reazione esotermica di polimerizzazione delle resine per corone provvisorie.
    • Source:
      Publisher: Edizioni Minerva Medica Country of Publication: Italy NLM ID: 0421071 Publication Model: Print Cited Medium: Print ISSN: 0026-4970 (Print) Linking ISSN: 00264970 NLM ISO Abbreviation: Minerva Stomatol Subsets: MEDLINE
    • Publication Information:
      Original Publication: Torino : Edizioni Minerva Medica
    • Subject Terms:
      Crowns* ; Hot Temperature*; Resins, Synthetic/*chemistry; Polymers ; Time Factors
    • Abstract:
      Background: The aim of the present study is to evaluate the risk of a possible thermal stress of the pulpal tissue during the fabrication of a temporary crown when using the direct technique.
      Methods: For this study, 7 different brands of acrylic resin including Acrylic type and Bis-Gma type have been tested. At this purpose one series of in vitro experimental trials were performed. The trials have evaluated the temperature increase inside the pulp chamber of an extracted tooth during the fabrication of a provisional crown. The temperatures reached by the resins tested were measured using a digital thermometer connected with a thermal probe.
      Results: The temperatures measured during the experimental trials show a different ability by the 7 tested resins to produce heat. Indeed, while the polymethylmethacrylate resins show higher increments rate of temperature, the Bis-Gma resins produce less dramatic increase along with lower temperatures peaks.
      Conclusions: Testing the 7 different resins has proved that there is an actual risk to cause lesions to the pulpal tissue during the placement of a provisional crown when using the direct technique. The materials which show a reduced exothermal reaction are: IsoTemp and Protemp II.
    • Accession Number:
      0 (Polymers)
      0 (Resins, Synthetic)
    • Publication Date:
      Date Created: 20020215 Date Completed: 20021204 Latest Revision: 20081121
    • Publication Date:
      20240829
    • Accession Number:
      11845116