Flowable Glass Ionomer Cement Layer Bonding to Sound and Carious Primary Dentin

被引：0

作者：

Lenzi, Tathiane Larissa ^{[1
]}

Bonifacio, Clarissa Calil ^{[3
]}

Bonecker, Marcelo ^{[1
]}

van Amerongen, W. Evert ^{[3
]}

Nogueira, Fernando Neves ^{[2
]}

Raggio, Daniela Procida ^{[1
]}

机构：

[1] Univ Sao Paulo, Sch Dent, Dept Orthodont & Pediat Dent, Sao Paulo, Brazil

[2] Univ Sao Paulo, Sch Dent, Dept Biomat & Oral Biol, Sao Paulo, Brazil

[3] Acad Ctr Dent Amsterdam, Dept Conservat & Prevent Dent, Amsterdam, Netherlands

来源：

JOURNAL OF DENTISTRY FOR CHILDREN | 2013年 / 80卷 / 01期

关键词：

ATRAUMATIC RESTORATIVE TREATMENT; BOND STRENGTH; GLASS IONOMER CEMENT; MICROTENSILE; DENTIN;

D O I：

暂无

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Purpose: The purpose of this study was to evaluate the effect of a flowable glass ionomer cement (GIC) layer application on bond strength to sound (SD) and carious primary dentin (CD). Methods: Flat dentin surfaces from primary molars were randomly assigned to 4 groups (n=5) according to substrate (SD or CD; pH-cycling for 14 days); and layers of GIC (1 layer/control [regular powder/liquid ratio] or 2 layers [first a flowable GIC layer and second a regular powder/liquid ratio layer of GIC]). After 24 hours of water storage, specimens were prepared to be evaluated with the microtensile test (1 mm/min). The fracture pattern was evaluated at 400X magnification (stereomicroscope). Results: The bond strength to SD was higher than to CD when GIC was inserted in 2 layers (P=.02). No significant difference was observed between 1 or 2 layers of GIC insertion (P>.05). For all groups, adhesive/mixed fracture prevailed. Conclusion: The effect of applying the flowable GIC layer on bond strength to dentin is dependent on substrate and results in an increase in adhesion for sound primary dentin.

引用

页码：20 / 24

页数：5