Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)
- Volume 25 Issue 1
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- Pages.103-115
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- 1998
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- 1226-8496(pISSN)
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- 2288-3819(eISSN)
A STUDY ON MICROLEAKAGE OF COMPOSITE RESIN AFTER SURFACE TREATMENT
표면 처리방법에 따른 복합레진의 미세누출에 관한 실험적 연구
- Lee, Chang-Woo (Department of Pediatric Dentistry, Dental Research Institution, College of Dentistry, Seoul National University) ;
- Kim, Jung-Wook (Department of Pediatric Dentistry, Dental Research Institution, College of Dentistry, Seoul National University) ;
- Lee, Sang-Hoon (Department of Pediatric Dentistry, Dental Research Institution, College of Dentistry, Seoul National University)
- Published : 1998.02.28
Abstract
Adhesion of composite resin to tooth structure has been of tremendous signgicance in clinical dentistry. Due to the lack of adhesion between composite restorative resins and enamel and dentin, microleakage occurs at the tooth/restoration interface. This may lead to discoloration, secondary caries, marginal breakdown, postoperative sensitivity, and even pulpal pathology. According to extensive use of composite resin, every effort on improving bonding strength and reducing microleakage between a tooth and composite resin has been continued. This study was conducted to determine the difference in microleakage in enamel and dentin treated with air-abrasion, acid etching and combination when restored with composite resin. Class V cavities were prepared on 30 premolars. The specimens were divided into following groups. group 1:air-abrasion+Scotchbond Multi-purpose group 4 :air-abrasion+All-Bond 2 group 2:acid etching+Scotchbond Multi-purpose group 5 :acid etching+All-Bond 2 group 3:combination+Scotchbond Multi-purpose group 6 :combination+All-Bond 2 #combination:air-abrasion + acid etching The specimens were filled with Z-100 after application of Scotchbond Multi-purpose and All-Bond 2. Thermocycling was conducted by alternately dipping the specimens in