Effect of different application and polymerization techniques on the microleakage of proximal resin composite restorations in vitro

This in vitro study investigated cervical microleakage of proximal resin composite restorations placed with three application and polymerization techniques. Uniform mesio-occlusal-distal (MOD) preparations featuring cervical margins above (mesial) and below (distal) the CEJ suitable for restoration...

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Bibliographic Details
Published in:	Operative dentistry Vol. 29; no. 1; p. 54
Main Authors:	Brunton, Paul A, Kassir, Ali, Dashti, Maha, Setcos, James C
Format:	Journal Article
Language:	English
Published:	United States 01-01-2004
Subjects:	Acid Etching, Dental Composite Resins - chemistry Computer-Aided Design Dental Cavity Preparation - classification Dental Cementum - pathology Dental Enamel - pathology Dental Leakage - classification Dental Restoration, Permanent - classification Dentin-Bonding Agents - chemistry Fluorescent Dyes Humans Materials Testing Polymers - chemistry Polymethacrylic Acids - chemistry Rhodamines Statistics, Nonparametric Tooth Cervix - pathology
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Summary:	This in vitro study investigated cervical microleakage of proximal resin composite restorations placed with three application and polymerization techniques. Uniform mesio-occlusal-distal (MOD) preparations featuring cervical margins above (mesial) and below (distal) the CEJ suitable for restoration with resin composite were copy milled into 33 recently extracted permanent molars. The teeth were divided randomly into three groups of 11 teeth and restored using a conventional incremental technique (Group A) and two novel curing devices (Groups B and C). After 24 hours, a dye penetration test was used to assess microleakage. Conventional placement in preparations with cervical margins in enamel had significantly lower interfacial leakage scores than those recorded for placement in preparations with margins in cementum regardless of the technique used to place the restorative material. Use of the two novel curing devices conferred no advantage in reducing microleakage irrespective of where preparation margins were placed.
ISSN:	0361-7734