2010年10月
Effect of mechanical properties of fillers on the grindability of composite resin adhesives
American journal of orthodontics and dentofacial orthopedics
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- 巻
- 138
- 号
- 4
- 開始ページ
- 420
- 終了ページ
- 426
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.ajodo.2008.08.039
- 出版者・発行元
- MOSBY-ELSEVIER
Introduction: The purpose of this study was to investigate the effect of filler properties on the grindability of composite resin adhesives. Methods: Six composite resin products were selected: Transbond XT (3M Unitek, Monrovia, Calif), Transbond Plus (3M Unitek), Enlight (Ormco, Glendora, Calif), Kurasper F (Kuraray Medical, Tokyo, Japan), Beauty Ortho Bond (Shofu, Kyoto, Japan), and Beauty Ortho Bond Salivatect (Shofu). Compositions and weight fractions of fillers were determined by x-ray fluorescence analysis and ash test, respectively. The polished surface of each resin specimen was examined with a scanning electron microscope. Vickers hardness of plate specimens (15 x 10 x 3 mm) was measured, and nano-indentation was performed on large filler particles (> 10 mu m). Grindability for a low-speed tungsten-carbide bur was estimated. Data were compared with anlaysis of variance (ANOVA) and the Tukey multiple range test. Relationships among grindability, filler content, filler nano-indentation hardness (nano-hardness), filler elastic modulus, and Vickers hardness of the composite resins were investigated with the Pearson correlation coefficient test. Results: Morphology and filler size of these adhesives showed great variations. The products could be divided into 2 groups, based on composition, which affected grindability. Vickers hardness of the adhesives did not correlate (r = 0.140) with filler nano-hardness, which showed a significant negative correlation (r = -0.664) with grindability. Conclusions: Filler nano-hardness greatly influences the grindability of composite resin adhesives. (Am J Orthod Dentofacial Orthop 2010;138:420-6)
- リンク情報
- ID情報
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- DOI : 10.1016/j.ajodo.2008.08.039
- ISSN : 0889-5406
- PubMed ID : 20889046
- Web of Science ID : WOS:000282361500019