지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
오류제보하기
Objective: To evaluate the shear bond strength (SBS), fracture mode, wire pull out (WPO) resistance and microleakage between low-shrinking and conventional composites used as a lingual retainer adhesive. Methods: A total of 120 human mandibular incisor teeth, extracted for periodontal reasons, were collected. Sixty of them were separated into two groups. To determine the SBS, either Transbond-LR (3M-Unitek) or Silorane (3M-Espe) was applied to the lingual surface of the teeth by packing the material into standard cylindrical plastic matrices (Ultradent) to simulate the lingual retainer bonding area. To test WPO resistance, 20 samples were prepared for each composite where the wire was embedded in the composite materialand cured. Then tensile stress was applied until failure of the composite occurred. The remaining 60 teeth were divided into two groups and multi-stranded 0.0215-inch diameter wire was bonded with the same composites. Microleakage was evaluated by the dye penetration method. Statistical analyses were performed by Wilcoxon, Pearson chi-square, and Mann-Whitney-U tests at p ＜ 0.05 level. Results: The SBS and WPO results were not statistically significant between the two groups. Significant differences were found between the groups in terms of fracture mode (p ＜ 0.001). Greater percentages of the fractures showed mix type failure (85%) for Silorane and adhesive (60%) for Transbond-LR. Microleakage values were lower in low-shrinking composite than the control and this difference was found to be statistically significant (p ＜ 0.001). Conclusions: Low-shrinking composite produced sufficient SBS, WPO and microleakage values on the etched enamel surfaces, when used as a lingual retainer composite. (Korean J Orthod 2011;41(1):51-58)
목차
INTRODUCTION
MATERIAL AND METHODS
RESULTS
DISCUSSION
CONCLUSIONS
REFERENCES
참고문헌 (31)
참고문헌 신청
1. [학술지(정기간행물)] - Bearn DR / 1995 / Bonded orthodontic retainers: a review / Am J Orthod Dentofacial Orthop 108 : 207 ~ 213
2. [학술지(정기간행물)] - Oesterle LJ / 2001 / Enhancing wire-composite bond strength of bonded retainers with wire surface treatment / Am J Orthod Dentofacial Orthop 119 : 625 ~ 631
3. [학술지(정기간행물)] - Ramoglu SI / 2008 / Accelerated aging effects on surface hardness and roughness of lingual retainer adhesives / Angle Orthod 78 : 140 ~ 144
4. [학술지(정기간행물)] - Lutz F / 1991 / Quality and durability of marginal adaptation in bonded composite restorations / Dent Mater 7 : 107 ~ 113
5. [학술지(정기간행물)] - Eick JD / 1986 / Polymerization shrinkage of posterior composite resins and its possible influence on postoperative sensitivity / Quintessence Int 17 : 103 ~ 111
2. [학술지(정기간행물)] - Oesterle LJ / 2001 / Enhancing wire-composite bond strength of bonded retainers with wire surface treatment / Am J Orthod Dentofacial Orthop 119 : 625 ~ 631
3. [학술지(정기간행물)] - Ramoglu SI / 2008 / Accelerated aging effects on surface hardness and roughness of lingual retainer adhesives / Angle Orthod 78 : 140 ~ 144
4. [학술지(정기간행물)] - Lutz F / 1991 / Quality and durability of marginal adaptation in bonded composite restorations / Dent Mater 7 : 107 ~ 113
5. [학술지(정기간행물)] - Eick JD / 1986 / Polymerization shrinkage of posterior composite resins and its possible influence on postoperative sensitivity / Quintessence Int 17 : 103 ~ 111
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UCI(KEPA) : I410-ECN-0101-2014-515-000452423