Fracture resistance of teeth restored with different resin-based restorative systems

被引：20
|
作者：
Kikuti, Willian Yoshio
Chaves, Fernando Oliveira
Di Hipolito, Vinicius [1 ]
Rodrigues, Flavia Pires [1 ]
Perlatti D'Alpino, Paulo Henrique [1 ]
机构：
[1] Anhanguera Uniban Univ, Sch Dent, Biomat Res Grp, Sao Paulo, Brazil
来源：
BRAZILIAN ORAL RESEARCH | 2012年 / 26卷 / 03期
基金：
巴西圣保罗研究基金会;
关键词：
Compressive Strength; Dentin-Bonding Agents; Dental Restoration; Permanent; COMPOSITE RESTORATIONS; SILORANE ADHESIVE; ELASTIC-MODULUS; BOND STRENGTH; GAP FORMATION; STRESS; LAYER; CONVERSION; SHRINKAGE; HARDNESS;
D O I：
10.1590/S1806-83242012005000004
中图分类号：
R78 [口腔科学];
学科分类号：
1003 ;
摘要：
The aim of the present study was to evaluate the fracture resistance of teeth restored with resin composite. Forty-eight maxillary premolar teeth were chosen and randomly divided to six groups: G1 (control): sound teeth; G2: MOD preparation, unrestored; G3: MOD + Adper Single Bond 2/P60; G4: MOD + Adper Easy One/P60; G5: MOD + P90 restorative system; G6: MOD + Adper Easy One/P90 Bond/P90. Specimens were subjected to compressive axial loading (0.5 mm/min). Flexural strength and the modulus of elasticity were also tested (n = 7). The only statistical equivalence with sound teeth was noted for G3 (p < 0.05). Flexural strength and the modulus of elasticity varied among the composites tested (n = 10). The reestablishment of the resistance to fracture in premolars subjected to Class II MOD preparations is restorative-system-dependent. The silorane restorative system is not able to recover the resistance to fracture.
引用
收藏
页码：275 / 281
页数：7
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