• 구강회복응용과학지
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• 제30권2호
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• pp.131-137
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• 2014

목적: 이 연구는 다양한 거칠기를 가진 알루미늄 옥사이드 연마석으로 치주기구 날 세우기를 시행시 연마석의 거칠기에 따른 치주기구 날 세우기의 효율성 및 마모도를 비교 평가하였다. 연구 재료 및 방법: 30개의 No. 9 - 10 그레이시 큐렛이 사용되었고, 모든 큐렛은 치석제거술 및 치근활택술을 시행함으로써 날을 무디게 만들고 3가지 그룹(240, 600, 800 grit)으로 임의로 나누었다. 치주기구의 예민도는 연마석을 최대 20회 기구에 적용한 후 평가되었고, 마모도는 최대 80회 후 기구 날의 끝 1 mm와 2 mm에서 기구 날의 폭으로 평가되었다. 결과: 치주기구 예민도는 5회와 10회 상하 운동시 240 grit에서 유의하게 높게 나타났으며(P < 0.001), 15회, 20회에서는 유의한 차이는 없었다(P > 0.05). 마모도는 240 grit의 경우 600 grit과 800 grit에 비해 약간 높게 나타났지만 통계적 유의성은 없었다. 결론: 알루미늄 옥사이드 연마석의 입자가 클수록 치주기구 날 세우기의 효율성은 증가하였다. 하지만 기구의 마모에 유의해야 한다.

• Journal of Periodontal and Implant Science
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• 제27권3호
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• pp.575-584
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• 1997

The quality of periodontal instrument cutting edge is a basic element of effective root planing procedure. Using instruments, the sharp edge is changed into blunt or beveled edge. With the blunt instrument, the periodontal treatment can't be carried into accuracy and effective. The study on the wear of periodontal curet is insufficient, there are few publications about the change of sharpness of cutting egde after using instrument and a certen reports were published on the study of scanning electron microscope(SEM) examination. In this study, to declare the number of strokes for sharpening of instruments, the changes of cutting edge is measured by the clinical methods, tactile sensitivity examination and refraction light-white line test after scaling strokes and root planing strokes. SEM test was added for defined the changes of cutting edges. The 7/8 Gracey curets that have been never used was tested. Maxillary molars which were extracted from the School of Dental Medicine, Dankook University was used. Subjected teeth had attachment loss more than 6 mm in bucca-lingual surface and sufficient calculus of a band type in cervical area. The strokes of curet were executed 3, 5, 7, 9, 11, 13 times on scaling stroke and 10, 15, 20, 25, 30, 35 times on root planing stroke. A resident has periodontal experience over 3 years carried out the clinical examinations those tactile sensitivity examination and refraction light-white line test 5 times. The case there being tactile sensitivity certenly is 2, the case being felt tactile sensitivity is 1, and the case there not being tactile sensitivity is 0. The visual examination was recorded as following. The case that refracted white line is not recognised is 2, the case that uncerten is 1, and the case that acknowledged is 0. The results were obtained as follows. 1. After scaling strokes, the tactile sensitivity was reduced after 11 strokes and disappeared in 13 strokes. 2. In tactile sensitivity after root planing procedures, sensitivity was reduced after 25 strokes and disappeared in 35 strokes. 3. In case of visual examination, the detection of refracted white line was increased after 9 strokes of scaling procedures and the accuracy of wear wasn't showed after root planing procedures. 4. In SEM, metal projection was observed on new periodontal curet cutting edge and it was disappeared after scaling procedures. 5. In SEM, the cutting edge was showed changing linear into an aspect of the surface after 5 strokes of scaling procedures and 10 strokes of root planing procedures and showed beveled edge in 11 strokes of scaling procedures, 25 strokes of root planing procedures. The results of 3-type examination indicated that the sharpening of curet should be performed after 11 strokes of scaling procedures and 25 strokes of root planing procedures.