The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
권호 표지

The shear bond strength and adhesive failure pattern in bracket bonding with different light-curing methods

브라켓 접착시 광중합방식에 따른 전단결합강도와 파절양상 비교

  • Shin, Jai-Ho (Department of Orthodontics, Graduate School of Clinical Dentistry, Korea University) ;
  • Lim, Yong-Kyu (Department of Orthodontics, Graduate School of Clinical Dentistry, Korea University) ;
  • Lee, Dong-Yul (Department of Orthodontics, Graduate School of Clinical Dentistry, Korea University)
  • 신재호 (고려대학교 임상치의학대학원 교정과) ;
  • 임용규 (고려대학교 임상치의학대학원 교정과) ;
  • 이동렬 (고려대학교 임상치의학대학원 교정과)
  • Published : 2004.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study was to evaluate the clinical effectiveness of a plasma arc light and light emitting diode (LED), compared with shear bond strength and the failure pattern of brackets bonded with visible light in direct bonding. Brackets were bonded with Transbond XT to 60 human premolars embedded in the resin blocks according to different light-curing methods. Then, the shear bond strength of each group was measured using a universal testing machine (Instron) and the adhesive failure pattern after debonding was visually examined by light microscope. The results were as follows: 1. The shear bond strength showed no significant difference between the visible light and light emitting diode, but the plasma arc light exhibited a significantly lower shear bond strength compared with the visible light and light emitting diode. 2. In the visible light and light emitting diode, adhesive failure patterns were similar. Bond failure occurred more frequently at the enamel-adhesive interface. 3. The bonding failure of brackets bonded with plasma arc light occurred more frequently at the bracket-adhesive interface. The results of this study suggest that plasma arc light, light emitting diode and visible light are all clinically useful in the direct bonding of orthodontic brackets.

기존의 가시광선 중합기와 비교해서 plasma are light와 LED) 방식의 중합기를 이용해 브라켓을 치아표면에 접착한 후 탈락시키는 실험을 시행해 각각의 중합방식별로 전단결합강도와 접착파절양상을 비교함으로써 임상에서의 유용성을 평가하고자 하였다. 교정치료를 위해 발거한 상, 하악 소구치 60개를 윈통형의 레진블록에 매몰하여 시편을 제작하였다. 광중합형 접착레진인 Transbond XT를 이용하여 광중합 방식별로 조건(가시광선 중합기는 40초, LED방식의 중합기는 20춘, 그리고 plasma arc light 방식의 중합기는 3초)에 따라 브라켓을 접착한 후 만능물성실험기로 전단결합강도를 측정하고 브라켓 기저면을 광학현미경으로 관찰해 접착파절양상을 관찰하여 다음과 같은 결과를 얻었다. 1. 가시광선 중합방식과 LED 중합방식으로 중합시킨 군간에 전단결합강도의 유의성 있는 차이는 없지만 plasma arc Light방식으로 중합시킨 군은 앞의 두 군에 비해 유의성이 있게 작은 간을 나타내었다(p>0.05). 2. 가시광선 중합방식으로 중합한 군과 LED방식을 이용한 군에서는 파절양상이 거의 유사하게 나타났다. 두 군 모두 잔류접착제가 치아면에만 있는 경우가 제일 적은 비율을 도였으며 브라켓 기저면에 50% 이상의 집착제가 남아 있는 양상이 더 큰 비율을 보였다. 3. Plasma arc light 로 중합시킨 경우에는 접착제가 브라켓 기저면에 50% 이하로 남아있는 양상이 큰 비율로 나타났으며 잔류 접착제 전체가 치아면에 남아 있는 경우는 15%였다. 이상의 실험결과 plasma arc light를 이용한 중합 방식이 가시광선이나 LED 방식을 이용한 중합 방식에 비해 유의성 있게(p>0.05) 낮은 전단결합강도를 보였으나 세 방식 모두 인상적으로 사용하기에 충분한 전단결합강도를 보여 유용하게 사용할 수 있음을 알 수 있었다.

Keywords

References

  1. Buonocore MG. A simple method of increasing the adhesion of acrylic filling materials to enamel surfaces. J Dent Res 1955;34:849~93
  2. Newman GV. Epoxy adhesive for orthodontic attachments-progress report. Am J Orthod 1965;51:901-12 https://doi.org/10.1016/0002-9416(65)90203-4
  3. Graber TM, Vanarsdall RL. Orthodontics: Current principles and Techniques. St Louis: Mosby; 2000
  4. Andrews LF. Straight wire the concept and appliance. San Diego: LA Wells; 1989
  5. Alfano RR. Yao SS. Human teeth with and without dental carries studied by visible luminescence spectroscopy. J Dent Res 1981;60:120-2 https://doi.org/10.1177/00220345810600020401
  6. Kelsey WP 3rd, Blankenau RJ, Powell GL. et aI. Enhancement of physical properties of resin restorative material by laser polymerization. Laser Surg Med. 1989;9:623-7 https://doi.org/10.1002/lsm.1900090613
  7. Blankenau RJ, Powell LG, Barkmeier WW, Kelsey WP. The use of an argon laser for polymerization of composite resin. J Esthet Dent. 1989;1:34-7 https://doi.org/10.1111/j.1708-8240.1989.tb01035.x
  8. 레이저 치의학. 대한 구강내과학회 1996;217-29
  9. Peutzfeldt A, Sahafi A, Asmussen E. Characterization of resin composites polymerized with plasma arc curing units. Dent Mater 2000;16:330-6 https://doi.org/10.1016/S0109-5641(00)00025-7
  10. Hofmann N, Hugo B, Schubert K, Klaiber B. Comparison between a plasma arc light source and conventional halogen curing units regarding flexural strength, modulus, and hardness of photoactivated resin composites. Clin Oral Investig 2000;4:140-7 https://doi.org/10.1007/s007840000063
  11. Coreil MN, McInnes-Ledoux P, Ledoux WR, Weinberg R. Shear bond strength of four orthodontic bonding systems. Am J Orthod Dento-facial Orthop 1990;97:126-9 https://doi.org/10.1016/0889-5406(90)70085-Q
  12. Fox NA, Mccabe JF, Buckley JG. A critique of bond strength testing in orthodontics. Br J Orthod 1994;21:33-43 https://doi.org/10.1179/bjo.21.1.33
  13. Artun J, Bergland S. Clinical trials with crystal growth conditioning as an alternative to acid-etching enamel pretreatment. Am J Orthod 1984;85:333-40 https://doi.org/10.1016/0002-9416(84)90190-8
  14. Ruyter IE, Oysaed H. Conversion in different depths of ultraviolet and visible light activated composite materials. Acta Odontol Scand 1982;40:179-92 https://doi.org/10.3109/00016358209012726
  15. Odegaard J, Segner D. The use of visible light-curing composites in bonding ceramic brackets. Am J Orthod Dentofacial Orthop 1990;97:188-93 https://doi.org/10.1016/S0889-5406(05)80050-2
  16. Leung RL, Fan PL, Johnson WL. A mathematical model for post irradiation handening of photoactivated composite resins. Dent Mater 1985;1:191-4 https://doi.org/10.1016/S0109-5641(85)80017-8
  17. Wang WN, Meng CL. A study of bond strength between light-and self-cured dothodontic resin. Am J Orthod Dentofacial Orthop 1992;101:350-4 https://doi.org/10.1016/S0889-5406(05)80328-2
  18. Hanyang University Department of Physics. Plasma Application Laboratary, 2000
  19. Cacciafesta V, Sfondrini MF, Sfondrini G. A xenon arc light-curing unit for bonding and bleaching. J Clin Orthod 2000;34:94-6
  20. 박영철, 유형석, 오영근, 이승연. Plasma arc light를 이용한 bracket 부착시의 전단결합강도와 파절양상의 유형. 대치교정지 2001;31:261-70
  21. Dunn WJ, Taloumis LJ, Polymerization of orthodontic resin cement with light emitting diode curing units, Am J Orthod Dentofacial Orthop 2002;122:236-41
  22. Reynolds IE, von Fraunhofer JA. Direct bonding of orthodontic attachments to teeth: the relation of adhesive bond strength to gauze mesh size, Br J Orthod 1976;3:91-5
  23. McCarthy MF, Honclrurn SO, Mechanical and bond strength properties of light-cured and chemically cured glassionomer cements. Am J Orthod Dentofacial Orthop 1994;105:135-41
  24. Keizer S, Ten Cate JM, Arends J. Direct bond of orthodontic brackets. Am J Orthod 1976;69:318-27 https://doi.org/10.1016/0002-9416(76)90079-8
  25. Maijer R, Smith DC. A new surface treatment of bonding. J Biomed Mater Res 1979;13:975-85 https://doi.org/10.1002/jbm.820130614
  26. Blankenau RJ, Powell GL, Pace SW, Wilwerding T. Evaluation of resin properties using xenon, argon and VLC system. J Dent Res 1996;75:147
  27. O'Brien KD, Watts DC, ReadMJ. Residual debris and bond strength- Is there a relationship? Am J Orthod 1988;94:222-30