The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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The Effect of Surface Treat`ment on Bond Strength of Polycarbonate Bracket

폴리카보네이트 브라켓 부착 시 결합강도 증진을 위한 표면처리 효과

  • Kim, Seok-Pil (Department of Orthodontics, School of Dentistry, Chonnam National University) ;
  • Kim, Nyeon-Kyeong (School of Dentistry, Chonnam National University) ;
  • Lee, Hyun-Jung (School of Dentistry, Chonnam National University) ;
  • Hwang, Hyeon-Shik (Department of Orthodontics, School of Dentistry, Dental Science Research Institute, Chonnam National University)
  • 김석필 (전남대학교 치과대학 교정학교실) ;
  • 김년경 (전남대학교 치과대학 치의학과) ;
  • 이현정 (전남대학교 치과대학 치의학과) ;
  • 황현식 (전남대학교 치의학연구소, 치과대학 교정학교실)
  • Published : 2006.10.30
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Abstract

Objective: The purpose of this study was to evaluate whether the bond strength of polycarbonate brackets can be increased through surface treatment. Methods: One hundred polycarbonate brackets (Alice) were bonded to bovine incisors with light-cured adhesive. The bracket bases were treated with one of three methods; sandblasting, plastic conditioner application, and combined treatment with sandblasting and plastic conditioner. The brackets without any suraace treatment served as the control. The shear bond strength was tested with a universal testing machine, and failure pattern was assessed with the adhesive remnant index. Results: The shear bond strength in all experimental groups was higher than that of the control group (p < 0.001). The group treated with plastic conditioner after sandblasting showed statistically higher shear bond strength than the sandblasting only group to (p < 0.05). The group treated with plastic conditioner after sandblasting showed higher shear bond strength than plastic conditioner only group, but the difference was not statistically significant. Conclusion: The above results suggest that the surface treatments of polycarbonate bracket is mandatory to improve bond strength, and the most effective method is an application of plastic conditioner after sandblasting.

본 연구는 폴리카보네이트 브라켓 부착 시 표면처리가 결합강도를 증진시키는지 알아보고자 시행되었다. 소의 하악 중절치를 포매하여 만든 100개의 시편에 광중합형 레진 접착제를 이용하여 폴리카보네이트 브라켓(Alice, 광명 데이콤, 대한민국)을 부착하였다. 대조군의 경우, 표면처리 없이 부착한 반면, 실험군의 경우 샌드블라스팅 처리한 경우, plastic conditioner 처리하여 부착한 경우, 그리고 샌드블라스팅과 함께 plastic conditioner 처리한 경우로 구분하여 접착하였다. 만능시험기를 이용하여 전단결합강도를 측정하고 파절양상을 비교 분석한 결과, plastic conditioner나 샌드블라스팅으로 표면처리를 시행한 경우 표면처리를 시행하지 않은 경우에 비해 높은 결합강도를 보였다 (p < 0.001). 샌드블라스팅과 plastic conditioner를 모두 처리한 경우는 샌드블라스팅만이나 Plastic conditioner만 처리한 경우보다 높은 결합강도를 보였으며, 특히 샌드블라스팅만 처리한 경우에 비해서는 통계적 유의차를 보였다 (p < 0.05). 이상의 연구결과는 폴리카보네이트 브라켓 부착 시 결합강도 증진을 위해서 베이스의 표면처리가 필요하며 샌드블라스팅 후 plastic conditioner 도포가 가장 효과적임을 보여주었다.

Keywords

References

  1. Newman GV. Adhesion and orthodontic plastic attachments. Am J Orthod 1969;56:573-88 https://doi.org/10.1016/0002-9416(69)90193-6
  2. Aird JC, Durning P. Fracture of polycarbonate edgewise brackets: a clinical and SEM study. Br J Orthod 1987;14:191-5 https://doi.org/10.1179/bjo.14.3.191
  3. Dobrin RJ, Kamel IL, Musich DR. Load-deformation characteristics of polycarbonate orthodontic brackets. Am J Orthod 1975;67:24-33 https://doi.org/10.1016/0002-9416(75)90126-8
  4. Feldner JC, Sarkar NK, Sheridan JJ, Lancaster DM. In vitro torquedeformation characteristics of orthodontic polycarbonate brackets. Am J Orthod Dentofacial Orthop 1994;106:265-72 https://doi.org/10.1016/S0889-5406(94)70046-X
  5. Crow V. Ex vivo shear bond strength of fiberglass reinforced aesthetic brackets. Br J Orthod 1995;22:325-30 https://doi.org/10.1179/bjo.22.4.325
  6. Liu JK, Chang LT, Chuang SF, Shieh DB. Shear bond strengths of plastic brackets with a mechanical base. Angle Orthod 2002;72: 141-5
  7. Fernandez L, Canut JA. In vitro comparison of the retention capacity of new aesthetic brackets. Eur J Orthod 1999;21:71-7 https://doi.org/10.1093/ejo/21.1.71
  8. Guan G, Takano-Yamamoto T, Miyamoto M, Hattori T, Ishikawa K, Suzuki K. Shear bond strengths of orthodontic plastic brackets. Am J Orthod Dentofacial Orthop 2000;117:438-43 https://doi.org/10.1016/S0889-5406(00)70163-6
  9. Swift EJ Jr, Brodeur C, Cvitko E, Pires JA. Treatment of composite surfaces for indirect bonding. Dent Mater 1992;8:193-6 https://doi.org/10.1016/0109-5641(92)90082-N
  10. Shiau JY, Rasmussen ST, Phelps AE, Enlow DH, Wolf GR. Analysis of the 'shear' bond strength of pretreated aged composites used in some indirect bonding techniques. J Dent Res 1993;72:1291-7 https://doi.org/10.1177/00220345930720090601
  11. Yim BC, Hwang HS, The effect of resin base surface treatment on shear bond strength in indirect bracket bonding technique. Korean J Orthod 1998;28:681-8
  12. Artun J, Bergland S. Clinical trials with crystal growth conditioning as an alternative to acid-etch enamel pretreatment. Am J Orthod 1984;85: 333-40 https://doi.org/10.1016/0002-9416(84)90190-8
  13. Egan FR, Alexander SA, Cartwright GE. Bond strength of rebonded orthodontic brackets. Am J Orthod Dentofacial Orthop 1996;109:64-70 https://doi.org/10.1016/S0889-5406(96)70164-6
  14. Chung CH, Fadem BW, Levitt HL, Mante FK. Effects of two adhesion boosters on the shear bond strength of new and rebonded orthodontic brackets. Am J Orthod Dentofacial Orthop 2000;118:295-9 https://doi.org/10.1067/mod.2000.104810
  15. Regan D, LeMasney B, van Noort R. The tensile bond strength of new and rebonded stainless steel orthodontic brackets. Eur J Orthod 1993;15:125-35 https://doi.org/10.1093/ejo/15.2.125
  16. Grabouski JK, Staley RN, Jakobsen JR. The effect of microetching on the bond strength of metal brackets when bonded to previously bonded teeth: an in vitro study. Am J Orthod Dentofacial Orthop 1998;114:452-60 https://doi.org/10.1016/S0889-5406(98)70192-1
  17. Newman GV, Newman RA, Sun BI, Ha JL, Ozsoylu SA. Adhesion promoters, their effect on the bond strength of metal brackets. Am J Orthod Dentofacial Orthop 1995;108:237-41 https://doi.org/10.1016/S0889-5406(95)70015-3