Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)
- Volume 27 Issue 2
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- Pages.229-236
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- 2000
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- 1226-8496(pISSN)
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- 2288-3819(eISSN)
A STUDY ON THE MICROLEAKAGE OF COMPOMER RESTORATIONS IN CERVICAL CAVITIES OF PRIMARY MOLARS ACCORDING TO THE LENGTH OF ETCHING TIME
유치 치경부 와동 Compomer 수복에 있어서의 산부식시간에 따른 미세누출에 관한 연구
- Kim, Sung-Ki (Department of Pediatric Dentistry, College of Dentistry, Pusan National University) ;
- Jeong, Tae-Sung (Department of Pediatric Dentistry, College of Dentistry, Pusan National University) ;
- Kim, Shin (Department of Pediatric Dentistry, College of Dentistry, Pusan National University)
- Published : 2000.05.31
Abstract
For the purpose of evaluating the microleakage of compomer restorations in cervical cavities of primary molars according to the length of etching time, an experiment was performed through next procedures. 48 extracted human primary molars were divided into 6 groups according to applied compomers and the etching time of 0, 15, 30 seconds. All the restorations were filled under the manufacturer's direction, and the degree of dye penetration was evaluated with stereomicroscope. The microleakage of etch group was measured and statistically analyzed and obtained the results as follows: 1. Compared with groups without etching, the degree of microleakage was reduced by acid etching the cavities (p<0.05). 2. There revealed similar preventive effects of microleakage when the teeth were etched for 15 seconds and 30 seconds respectively(p>0.05). 3. No significant difference was observed between two compomers examined in this study(p>0.05). It was, therefore, thought acid etching is effective to minimize the microleakage of compomer restorations in primary teeth, and in cases of performing, 15 seconds is adequate for etching.
유치의 치경부 와동 compomer 수복물에 있어서의 산부식 시간에 따른 미세누출의 정도를 평가할 목적으로, 48개의 발거된 유구치의 협설면에 V급 와동을 형성하고 사용된 compomer와 산부식 시간에 따라 6개의 군으로 나누어 각각 0, 15, 30초간 산부식한 후, 제조자의 지시에 따라 수복하였다 각 군의 색소침투도를 stereomicroscope를 사용하여 관찰하고 미세누출의 정도를 판정하여 다음과 같은 결론을 얻었다. 1. 와동을 산부식 처리를 하지 않는 경우보다 산부식 처리를 하는 경우 미세누출이 감소되었다(p<0.05). 2. 15초간 산부식을 하는 경우와 30초간 산부식을 한 경우에 미세누출의 방지 정도는 유사하였다(p>0.05). 3. 연구에 사용된 두 종류의 compomer 간에 각 군에서의 미세누출의 차이는 없었다(p>0.05). 이상의 결과에 의하면, 유치 치경부와동의 compomer 수복에 있어서 미세누출을 최소화하기 위해서는 산부식처리를 하는 것이 효과적이며, 시행할 경우에는 15초간 시행하는 것이 적합할 것으로 사료되었다.