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Polymerization shrinkage stress of composite resins and resin cements - What do we need to know?
被引:134
作者:
Soares, Carlos Jose
[1
]
Faria-E-Silva, Andre Luis
[2
]
Rodrigues, Monise de Paula
[1
]
Fernandes Vilela, Andomar Bruno
[1
]
Pfeifer, Carmem Silvia
[3
]
Tantbirojn, Daranee
[4
]
Versluis, Antheunis
[5
]
机构:
[1] Univ Fed Uberlandia, Dent Sch, Dept Operat Dent & Dent Mat, Uberlandia, MG, Brazil
[2] UFS, Dent Sch, Dept Dent, Aracaju, Sergipe, Brazil
[3] Oregon Hlth & Sci Univ, Sch Dent, Dept Restorat Dent, Portland, OR 97201 USA
[4] Univ Tennessee, Hlth Sci Ctr, Coll Dent, Dept Restorat Dent, Memphis, TN USA
[5] Univ Tennessee, Hlth Sci Ctr, Coll Dent, Dept Biosci Res, Knoxville, TN 37996 USA
关键词:
Tooth;
Sensitivity and Specificity;
Composite Resins;
Polymerization;
DELAYED LIGHT ACTIVATION;
THIO-URETHANE OLIGOMERS;
FINITE-ELEMENT-ANALYSIS;
BULK-FILL COMPOSITES;
POST-GEL SHRINKAGE;
MECHANICAL-PROPERTIES;
FLOWABLE COMPOSITE;
DENTAL COMPOSITES;
CONTRACTION STRESS;
CUSPAL DEFLECTION;
D O I:
10.1590/1807-3107BOR-2017.vol31.0062
中图分类号:
R78 [口腔科学];
学科分类号:
1003 ;
摘要:
Polymerization shrinkage stress of resin-based materials have been related to several unwanted clinical consequences, such as enamel crack propagation, cusp deflection, marginal and internal gaps, and decreased bond strength. Despite the absence of strong evidence relating polymerization shrinkage to secondary caries or fracture of posterior teeth, shrinkage stress has been associated with postoperative sensitivity and marginal stain. The latter is often erroneously used as a criterion for replacement of composite restorations. Therefore, an indirect correlation can emerge between shrinkage stress and the longevity of composite restorations or resin-bonded ceramic restorations. The relationship between shrinkage and stress can be best studied in laboratory experiments and a combination of various methodologies. The objective of this review article is to discuss the concept and consequences of polymerization shrinkage and shrinkage stress of composite resins and resin cements. Literature relating to polymerization shrinkage and shrinkage stress generation, research methodologies, and contributing factors are selected and reviewed. Clinical techniques that could reduce shrinkage stress and new developments on low-shrink dental materials are also discussed.
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页码:49 / 63
页数:15
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