Environmental SEM and dye penetration observation on resin-tooth interface using different light curing method

被引:7
作者
Yoshikawa, Takako [1 ]
Morigami, Makoto [2 ]
Sadr, Alireza [3 ]
Tagami, Junji [1 ]
机构
[1] TMDU, Grad Sch Med & Dent Sci, Dept Oral Hlth Sci, Cariol & Operat Dent,Bunkyo Ku, 1-5-45 Yushima, Tokyo 1138549, Japan
[2] Toranomon Gen Hosp, Dept Dent, Minato Ku, Tokyo, Japan
[3] Univ Washington, Sch Dent, Dept Restorat Dent, Lab IB3T, Seattle, WA 98195 USA
关键词
Environmental SEM; Dye penetration test; Polymerization; Resin composite; Adaptation; MICROTENSILE BOND STRENGTH; CAVITY WALL ADAPTATION; COMPOSITE RESTORATIONS; CONTRACTION STRESSES; C-FACTOR; POLYMERIZATION; SHRINKAGE; IRRADIATION; DENTIN;
D O I
10.4012/dmj.2015-196
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
The aim of this study was the effects of different light curing methods on marginal sealing and resin composite adaptation to the cavity wall using the dye penetration test and environmental scanning electron microscope (SEM) observations. Cylindrical cavities were prepared on cervical regions. The teeth were restored with Clearfil Liner Bond 2 V adhesive and filled with Clearfil Photo Bright or Palfique Estelite resin composites. These resins were cured with a conventional light-curing method or a slow-start curing method. After thermal cycling, the specimens were subjected to the dye penetration test to evaluate marginal sealing and adaptation of the resin composites to the cavity walls. These resin-tooth interfaces were then observed using environmental SEM. The light-cured resin composite, which exhibited increased contrast ratios during polymerization, suggests high compensation for polymerization stress using the slow-start curing method. There was a high correlation between dye penetration test and environmental SEM observation.
引用
收藏
页码:89 / 96
页数:8
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