The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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Histomorphometric evaluation of the bone surrounding orthodontic miniscrews according to their adjacent root proximity

  • Oh, Hyun-Ju ;
  • Cha, Jung-Yul (Department of Orthodontics, The Institute of Cranio-Facial Deformity, College of Dentistry, Yonsei University) ;
  • Yu, Hyung-Seog (Department of Orthodontics, The Institute of Cranio-Facial Deformity, College of Dentistry, Yonsei University) ;
  • Hwang, Chung-Ju (Department of Orthodontics, The Institute of Cranio-Facial Deformity, College of Dentistry, Yonsei University)
  • Received : 2017.08.23
  • Accepted : 2018.02.07
  • Published : 2018.09.25
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Abstract

Objective: This study was conducted to perform histomorphometric evaluations of the bone surrounding orthodontic miniscrews according to their proximity to the adjacent tooth roots in the posterior mandible of beagle dogs. Methods: Four male beagle dogs were used for this study. Six orthodontic miniscrews were placed in the interradicular spaces in the posterior mandible of each dog (n = 24). The implanted miniscrews were classified into no loading, immediate loading, and delayed loading groups according to the loading time. At 6 weeks after screw placement, the animals were sacrificed, and tissue blocks including the miniscrews were harvested for histological examinations. After analysis of the histological sections, the miniscrews were categorized into three additional groups according to the root proximity: high root proximity, low root proximity, and safe distance groups. Differences in the bone-implant contact (BIC, %) among the root proximity groups and loading time groups were determined using statistical analyses. Results: No BIC was observed within the bundle bone invaded by the miniscrew threads. Narrowing of the periodontal ligament space was observed in cases where the miniscrew threads touched the bundle bone. BIC (%) was significantly lower in the high root proximity group than in the low root proximity and safe distance groups. However, BIC (%) showed no significant differences among the loading time groups. Conclusions: Regardless of the loading time, the stability of an orthodontic miniscrew is decreased if it is in contact with the bundle bone as well as the adjacent tooth root.

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References

  1. Liou EJ, Pai BC, Lin JC. Do miniscrews remain stationary under orthodontic forces? Am J Orthod Dentofacial Orthop 2004;126:42-7. https://doi.org/10.1016/j.ajodo.2003.06.018
  2. Kravitz ND, Kusnoto B. Risks and complications of orthodontic miniscrews. Am J Orthod Dentofacial Orthop 2007;131(4 Suppl):S43-51. https://doi.org/10.1016/j.ajodo.2006.04.027
  3. Wang YC, Liou EJ. Comparison of the loading behavior of self-drilling and predrilled miniscrews throughout orthodontic loading. Am J Orthod Dentofacial Orthop 2008;133:38-43. https://doi.org/10.1016/j.ajodo.2006.01.042
  4. Papageorgiou SN, Zogakis IP, Papadopoulos MA. Failure rates and associated risk factors of orthodontic miniscrew implants: a meta-analysis. Am J Orthod Dentofacial Orthop 2012;142:577-95. e7. https://doi.org/10.1016/j.ajodo.2012.05.016
  5. Kang YG, Kim JY, Lee YJ, Chung KR, Park YG. Stability of mini-screws invading the dental roots and their impact on the paradental tissues in beagles. Angle Orthod 2009;79:248-55. https://doi.org/10.2319/122007-413.1
  6. Asscherickx K, Vande Vannet B, Wehrbein H, Sabzevar MM. Success rate of miniscrews relative to their position to adjacent roots. Eur J Orthod 2008; 30:330-5. https://doi.org/10.1093/ejo/cjn019
  7. Kuroda S, Yamada K, Deguchi T, Hashimoto T, Kyung HM, Takano-Yamamoto T. Root proximity is a major factor for screw failure in orthodontic anchorage. Am J Orthod Dentofacial Orthop 2007; 131(4 Suppl):S68-73. https://doi.org/10.1016/j.ajodo.2006.06.017
  8. Kim SH, Kang SM, Choi YS, Kook YA, Chung KR, Huang JC. Cone-beam computed tomography evaluation of mini-implants after placement: Is root proximity a major risk factor for failure? Am J Orthod Dentofacial Orthop 2010;138:264-76. https://doi.org/10.1016/j.ajodo.2008.07.026
  9. Janson G, Gigliotti MP, Estelita S, Chiqueto K. Influence of miniscrew dental root proximity on its degree of late stability. Int J Oral Maxillofac Surg 2013;42:527-34. https://doi.org/10.1016/j.ijom.2012.09.010
  10. Wang Z, Li Y, Deng F, Song J, Zhao Z. A quantitative anatomical study on posterior mandibular interradicular safe zones for miniscrew implantation in the beagle. Ann Anat 2008;190:252-7. https://doi.org/10.1016/j.aanat.2007.11.007
  11. Deguchi T, Yabuuchi T, Hasegawa M, Garetto LP, Roberts WE, Takano-Yamamoto T. Histomorphometric evaluation of cortical bone thickness surrounding miniscrew for orthodontic anchorage. Clin Implant Dent Relat Res 2011;13:197-205. https://doi.org/10.1111/j.1708-8208.2009.00197.x
  12. Cha JY, Kil JK, Yoon TM, Hwang CJ. Miniscrew stability evaluated with computerized tomography scanning. Am J Orthod Dentofacial Orthop 2010; 137:73-9. https://doi.org/10.1016/j.ajodo.2008.03.024
  13. Marquezan M, Lima I, Lopes RT, Sant'Anna EF, de Souza MM. Is trabecular bone related to primary stability of miniscrews? Angle Orthod 2014;84:500-7. https://doi.org/10.2319/052513-39.1
  14. Lee SY, Cha JY, Yoon TM, Park YC. The effect of loading time on the stability of mini-implant. Korean J Orthod 2008;38:149-58. https://doi.org/10.4041/kjod.2008.38.3.149
  15. Freire JN, Silva NR, Gil JN, Magini RS, Coelho PG. Histomorphologic and histomophometric evaluation of immediately and early loaded mini-implants for orthodontic anchorage. Am J Orthod Dentofacial Orthop 2007;131:704.e1-9.
  16. Ure DS, Oliver DR, Kim KB, Melo AC, Buschang PH. Stability changes of miniscrew implants over time. Angle Orthod 2011;81:994-1000. https://doi.org/10.2319/120810-711.1
  17. Motoyoshi M. Clinical indices for orthodontic mini implants. J Oral Sci 2011;53:407-12. https://doi.org/10.2334/josnusd.53.407
  18. Woods PW, Buschang PH, Owens SE, Rossouw PE, Opperman LA. The effect of force, timing, and location on bone-to-implant contact of miniscrew implants. Eur J Orthod 2009;31:232-40. https://doi.org/10.1093/ejo/cjn091
  19. Youn JW, Cha JY, Yu H, Hwang CJ. Biologic evaluation of a hollow-type miniscrew implant: an experimental study in beagles. Am J Orthod Dentofacial Orthop 2014;145:626-37. https://doi.org/10.1016/j.ajodo.2013.12.028
  20. Cho YM, Cha JY, Hwang CJ. The effect of rotation moment on the stability of immediately loaded orthodontic miniscrews: a pilot study. Eur J Orthod 2010;32:614-9. https://doi.org/10.1093/ejo/cjq008
  21. Watanabe H, Deguchi T, Hasegawa M, Ito M, Kim S, Takano-Yamamoto T. Orthodontic miniscrew failure rate and root proximity, insertion angle, bone contact length, and bone density. Orthod Craniofac Res 2013;16:44-55. https://doi.org/10.1111/ocr.12003
  22. Nanci A. Dentin-pulp complex. In: Nanci A, ed. Ten cate's oral histology: development and function. 8th ed. St. Louis: Elsevier Mosby; 2012. p. 220.
  23. Araujo M, Lindhe J. The edentulous alveolar ridge. In: Lindhe J, Lang NP, Karring T, eds. Clinical periodontology and implant dentistry. 5th ed. Oxford: Blackwell Munksgaard; 2003. p. 53-63.
  24. Hubar JS. Quantification of the lamina dura. J Can Dent Assoc 1993;59:997-1000.
  25. Buchter A, Wiechmann D, Gaertner C, Hendrik M, Vogeler M, Wiesmann HP, et al. Load-related bone modelling at the interface of orthodontic microimplants. Clin Oral Implants Res 2006;17:714-22. https://doi.org/10.1111/j.1600-0501.2006.01233.x
  26. Kim H, Kim TW. Histologic evaluation of rootsurface healing after root contact or approximation during placement of mini-implants. Am J Orthod Dentofacial Orthop 2011;139:752-60. https://doi.org/10.1016/j.ajodo.2009.06.042
  27. Lee YK, Kim JW, Baek SH, Kim TW, Chang YI. Root and bone response to the proximity of a miniimplant under orthodontic loading. Angle Orthod 2010;80:452-8. https://doi.org/10.2319/070209-369.1
  28. Brisceno CE, Rossouw PE, Carrillo R, Spears R, Buschang PH. Healing of the roots and surrounding structures after intentional damage with miniscrew implants. Am J Orthod Dentofacial Orthop 2009; 135:292-301. https://doi.org/10.1016/j.ajodo.2008.06.023
  29. Park HS, Yen S, Jeoung SH. Histologic and biomechanical characteristics of orthodontic selfdrilling and self-tapping miniscrew implants. Korean J Orthod 2006;36:295-397.
  30. Cha JY, Hwang CJ, Kwon SH, Jung HS, Kim KM, Yu HS. Strain of bone-implant interface and insertion torque regarding different miniscrew thread designs using an artificial bone model. Eur J Orthod 2015;37:268-74. https://doi.org/10.1093/ejo/cju037
  31. Choi HW, Park YS, Chung SH, Jung MH, Won Moon, Rhee SH. Comparison of mechanical and biological properties of zirconia and titanium alloy orthodontic micro-implants. Korean J Orthod 2017;47:229-37. https://doi.org/10.4041/kjod.2017.47.4.229

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