수종의 밴드 접착 시멘트의 물성에 대한 비교 연구
COMPARATIVE STUDY OF PHYSICAL PROPERTIES FOR VARIOUS BAND CEMENTS
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
본 연구의 목적은 시중에 유통되고 있는 밴드 시멘트들을 종류별로 이용하여 교정용 밴드의 결합강도를 비교하고, 각 시멘 트의 파절 양상을 비교하여 교정용 밴드에 대한 사용지침을 마련하는데 도움이 되고자 하였다. 100개의 발거된 인간의 제 3대구치를 이용해 실험군은 총 5개의 군으로 하였으며, 각 군당 시편수가 20개가 되도록 임의 적으로 분류하였다. 실험에 사용한 밴드 시멘트는 다음과 같다; Ormco gold, Ultra Band-LokTM, Fuji OrthoTM LC, 3M UnitekTM Multi-Cure Glass Ionomer, Ketac-CemTM. Universal testing machine(Instron Corp., Canton, MA, USA) 를 사용하여 최대하중값을 측정하였고, 전단결합강도 값을 계산하였다. 밴드가 탈락한 후, 탈락 부위를 평가하여 법랑질과 시 멘트, 시멘트와 밴드 사이로 구분하였다. 밴드의 전단강도는 One-way ANOVA를 이용하여 통계처리 하였으며 Tukey test 를 이용하여 검정하였다. 또한 탈락 부위는 Chi-squre analysis를 이용하여 통계 처리하였고, Fisher's exact test로 군간 유의성을 검정하였다. 실험 결과 평균 파절 강도는 Ormco군이 가장 높았고(2.44±0.57), Fuji OrthoTM군(2.24±0.50), Ketac-CemTM군(2.10 ±0.57), 3M UnitekTM군(1.82±0.43), Band-LokTM군(1.73±0.28) 순이었으며, Ormco군은 Band-LokTM군과 3M UnitekTM군, Fuji OrthoTM군은 Band-LokTM군과만 통계적으로 유의할만한 차이를 보였다(p<0.05). 파절 양상에서 Ormco 군과 Band-LokTM군은 서로뿐만 아니라 다른 군과 유의할만한 차이를 보였으며, Fuji OrthoTM, 3M UnitekTM, Ketac- CemTM 군 간에는 유의한 차이가 없었다.
Abstract
The aim of this study was to compare the shear-peel strength and the fracture site of 5 commercially available orthodontic band cements. One hundred molar bands were cemented to extracted human 3rd molars. The specimens were prepared in accordance with the manufacturer's instructions for each cement. After storage in a humidor at 37℃ for 24 hours, the shear debonding force was assessed for each specimen using an universal testing machine with crosshead speed of 2 mm/minute. Maximal failure stress was converted to mean shearpeel strength, MPa. The predominant site of band failure was recorded visually for all specimens as either at the band/cement or cement/enamel interface. Mean shear-peel strength of Ormco was the highest(2.44±0.57), followed by Fuji OrthoTM(2.24±0.50), Ketac-CemTM(2.10±0.57), 3M UnitekTM(1.82±0.43), Band-LokTM(1.73±0.28). There were statistically significant differences between Ormco and Band-LokTM, Ormco and 3M UnitekTM, and Fuji OrthoTM and Band- LokTM(p<0.05). The predominant site of bonding failure for bands cemented with the Ormco was at the band/cement interface, whereas bands cemented with Ultra Band-LokTM failed predominantly at the enamel/cement interface. There was no significant difference among the other cements(Fuji OrthoTM, 3M UnitekTM, Ketac-CemTM).
참고문헌 (20)
- Millett DT, "Bonded molar tubes: a retrospective evaluation of clinical performance", Am J Orthod Dentofacial Orthop, 115, pp.667~674 (1999)
- Millett DT, "In vitro comparison of orthodontic band cements", Am J Orthod Dentofacial Orthop, 123, pp.15~20 (2003)
- 김형준, "접착용 시멘트의 균일한 도포를 위한 교정용 밴드 장착방법의 모색", 대한소아치과학회지, 33(3), pp.491~497 (2006), 대한소아치과학회
- Norris DS, "Retention of orthodontic bands with new fluoride-releasing cements", Am J Orthod, 89, pp.206~211 (1986)
- Wilson AD, "A new translucent cement for dentistry", Br Dent J, 132, pp.133~135 (1972)
- Kocadereli I, "Retention of orthodontic bands with three different cements", J Clin Pediatr Dent, 19, pp.127~130 (1995)
- Gillgrass TJ, "Modified composite or conventional glass ionomer for band cementation? A comparative clinical trial", Am J Orthod Dentofacial Orthop, 120, pp.49~53 (2001)
- 황규선, "컴포머의 불소 유리 및 항우식 효과에 관한 비교 연구", 대한소아치과학회지, 29(1), pp.1~10 (2002), 대한소아치과학회
- Liebmann SM, "In vitro study of resin-modified glass ionomer cements for cementation of orthodontic bands", J Orofac Orthop, 60, pp.348~360 (1999)
- Millett DT, "Chlorhexidine-modified glass ionomer for band cementation? An in vitro study", J Orthod, 32, pp.36~42 (2005)
- Aggarwal M, "A comparison of shear-peel band strengths of 5 orthodontic cements", Angle Orthod, 70, pp.308~316 (2000)
- Millett DT, "Adhesives for fixed orthodontic bands", Cochrane Database Syst Rev, 18, pp.1~15 (2007)
- Brown D, "Orthodontic band cements", Br J Orthod, 16, pp.127~131 (1989)
- Millett DT, "Resinmodified glass ionomer, modified composite or conventional glass ionomer for band cementation? - an in vitro evaluation", Eur J Orthod, 25, pp.609~614 (2003)
- Fox NA, "A critique of bond strength testing in orthodontics", Br J Orthod, 21, pp.33~43 (1994)
- Millet DT, "The effect of sandblasting on the retention of first molar orthodontic bands cemented with glass ionomer cement", Br J Orthod, 22, pp.161~169 (1995)
- Millett DT, "Comparative laboratory investigation of dual-cured vs conventional glass ionomer cements for band comentation", Angle Orthod, 68, pp.345~350 (1998)
- Millett DT, "A clinical retrospective evaluation of 2 orthodontic band cements", Angle Orthod, 71, pp.470~476 (2001)
- Mennemeyer VA, "Bonding of hybrid ionomers and resin cements to modified orthodontic band materials", Am J Orthod Dentofacial Orthop, 115, pp.143~147 (1999)
- Knox J, "An ex vivo evaluation of resin-modified glass polyalkenoates and polyacid-modified composite resins as orthodontic band cements", J Orthod, 31, pp.323~328 (2004)