アブストラクト（26巻1号：The Bulletin of Kanagawa Dental College）

The Bulletin of Kanagawa Dental College

English

Title　： Study on Curing Conditions of Light-cured Composite Resin (Part 1) The Effect of Curing Conditions on the Strength of Resin and its Scatter of Measurement Values
Subtitle　： ORIGINAL ARTICLES
Authors　： Kiyoo Obata, Mikiko Yamada, Kazuo Shimoyama, Kozo Umemoto, Kazuhiko Joshin
Authors（kana）　：
Organization　： Department of Dental Materials, Kanagawa Dental College
Journal　： The Bulletin of Kanagawa Dental College
Volume　： 26
Number　： 1
Page　： 3-7
Year/Month　： 1998 / 3
Article　： Original article
Publisher　： Kanagawa Odontological Society
Abstract　： [Abstract] Some commercial light-cured composite resins often cure with unstable properties under curing conditions designated by their manufacturer. The purpose of this study was to establish the conditions in order to obtain cured composite resins with stable properties. We constructed cylindrical specimens using commercial light-cured composite resins and light curing units, and investigated the effect of the curing conditions on the properties of composite resins including the scatter of measurement values by measuring their compressive strength, and concluded as follows: 1. The specimens of some commercial composite resins often show low compressive strength and a large scatter of measurement values when they are cured under conditions designated by their manufacturer. 2. We are able to make specimens with a stable compressive strength by prolonging the exposure time or decreasing the cumulative thickness of the resins. 3. The properties of some composite resins are not affected by the exposure time or by the cumulative thickness of the resins. 4. The properties of cured composite resins are also affected by the kind of light curing unit used. 5. The compressive strengths of light-cured composite resin decrease after soaking in 37℃ water for a long period. The compressive strengths of specimens cured insufficiently decrease more markedly than specimens cured sufficiently.
Practice　： Dentistry
Keywords　： Light-cured composite resin, Compressive strength, Scatter of measured values, Exposure time, Cumulative thickness