| A STUDY ON THE MICROLEAKAGE OF COMPOMER RESTORATIONS IN CERVICAL CAVITIES OF PRIMARY MOLARS ACCORDING TO THE LENGTH OF ETCHING TIME |
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| 유치 치경부 와동 Compomer 수복에 있어서의 산부식시간에 따른 미세누출에 관한 연구 |
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김성기, 정태성, 김신 |
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부산대학교 치과대학 소아치과학교실 |
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| Abstract |
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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. |
| Key Words:
Compomer, Etching time, Microleakage, Primary teeth |
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