JOURNAL BROWSE
Search
Advanced SearchSearch Tips
MINISCREW STABILITY REGARDING DESIGN OF MINISCREW AND THICKNESS OF CORTICAL BONE
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
MINISCREW STABILITY REGARDING DESIGN OF MINISCREW AND THICKNESS OF CORTICAL BONE
Kweon, Young-Sun; Hyun, Hong-Keun; Kim, Young-Jae; Kim, Jung-Wook;
  PDF(new window)
 Abstract
The aim of this study was to suggest a design for an orthodontic miniscrew which may work most favorably in the thin cortical bone of the adolescent. In this study, orthodontic miniscrews with different diameters, lengths, and body types were manufactured and implanted in two artificial bone samples with different cortical bone thickness. Maximum insertion torque, maximum removal torque, and lateral alteration torque were measured. As a result, the bone quality, body type, diameter, and the length all had their effects on the maximum insertion torque, maximum removal torque, and lateral alteration torque. Cortical bone thickness was the most important factor. In initial stability, conical types showed better results than cylindrical types. Increase in the diameter had favorable effects in achieving mechanical stability. Increase in the length did not have as much influence as the other factors did on the initial stability, but there was a statistically significant difference between screws of 6 mm and 8 mm lengths(p<0.05). In conclusion, the conical type screw with a diameter of 1.8 mm is most favorable in the thin cortical bone of the adolescent. In terms of length, the 8 mm screw is expected to perform better than the 6 mm screw.
 Keywords
Orthodontic miniscrew;Cortical bone thickness;Diameter;Length;Body type;
 Language
Korean
 Cited by
 References
1.
Santiago RC, De Paula FO, Fraga MR, et al. : Correlation between miniscrew stability and bone mineral density in orthodontic patients. Am J Orthod Dentofacial Orthop, 136:243-250, 2009. crossref(new window)

2.
Park HS, Jeong SH, Kwon OH : Factors affecting the clinical success of screw implants used as orthodontic anchorage. Am J Orthod Dentofacial Orthop, 130:18-25, 2006. crossref(new window)

3.
Salmoria KK, Tanaka OM, Guariza-Filho O, et al. : Insertional torque and axial pull-out strength of mini-implants in mandibles of dogs. Am J Orthod Dentofacial Orthop, 133:790-790, 2008.

4.
Florvaag B, Kneuertz P, Lazar F, et al. : Biomechanical properties of Orthodontic Miniscrews. An in-vitro study. J Orofac Orthop, 71:53-67, 2010. crossref(new window)

5.
Reicheneder C, Rottner K, Bokan I, et al. : Mechanical loading of orthodontic miniscrews-significance and problems : an experimental study. Biomed Tech, 53:242-245, 2008. crossref(new window)

6.
Brettin BT, Grosland NM, Qian F, et al. : Bicortical vs monocortical orthodontic skeletal anchorage. Am J Orthod Dentofacial Orthop, 134:625-635, 2008. crossref(new window)

7.
Miyawaki S, Koyama I, Inoue M, et al. : Factors associated with the stability of titanium screws placed in the posterior region for orthodontic anchorage. Am J Orthod Dentofacial Orthop, 124:373-378, 2003. crossref(new window)

8.
Fritz U, Ehmer A, Diedrich P : Clinical suitability of titanium microscrews for orthodontic anchorage-preliminary experiences. J Orofac Orthop, 65:410-418, 2004.

9.
Cheng SJ, Tseng IY, Lee JJ, Kok SH : A prospective study of the risk factors associated with failure of mini-implants used for orthodontic anchorage. Int J Oral Maxillofac Implants, 19:100-106, 2004.

10.
Cha JY, Takano-Yamamoto T, Hwang CJ : The Effect of Miniscrew Taper Morphology on Insertion and Removal Torque in Dogs. Int J Oral Maxillofac Implants, 25:777-783, 2010.

11.
Lim SA, Cha JY, Hwang CJ : Insertion Torque of Orthodontic Miniscrews According to Changes in Shape, Diameter and Length. Angle Orthod, 78: 234-240, 2008. crossref(new window)

12.
Papadopoulos MA, Tarawneh F : The use of miniscrew implants for temporary skeletal anchorage in orthodontics: a comprehensive review. Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 103:6-15, 2007.

13.
Motoyoshi M, Hirabayashi M, Uemura M, Shimizu N. : Recommended placement torque when tightening an orthodontic mini-implant. Clin Oral Implants Res, 17:109-114, 2006. crossref(new window)

14.
Kim JW, Cho IS, Lee SJ, et al. : Mechanical analysis of the taper shape and length of orthodontic mini-implant for initial stability. Korean J Orthod, 36:55-62, 2006.

15.
Chen Y, Kyung HM, Gao L, et al. : Mechanical properties of self-drilling orthodontic micro-implants with different diameters. Angle Orthod, 80:821-827, 2010. crossref(new window)

16.
Suzuki EY, Suzuki B, Aramrattana A, et al. : Assessment of miniscrew implant stability by resonance frequency analysis : a study in human cadavers. J Oral Maxillofac Surg, 68:2682-2689, 2010. crossref(new window)

17.
임수민, 양연미, 김재곤 등 : 혼합치열기의 miniscrew를 이용한 교정치료. 대한소아치과학회지, 35:367-375, 2008.

18.
Wilmes B, Rademacher C, Olthoff G, Drescher D : Parameters Affecting Primary Stability of Orthodontic Mini-implants. J Orofac Orthop, 67: 162-174, 2006. crossref(new window)

19.
Swasty D, Lee JS, Huang JC, et al. : Anthropometric analysis of the human mandibular cortical bone as assessed by cone-beam computed tomography. J Oral Maxillofac Surg, 67:491-500, 2009. crossref(new window)

20.
백병주, 김미라, 노용관 등 : 아동 및 청소년기의 하악각부피질골 두께에 관한 방사선학적 연구. 대한소아치과학회지, 25:225-233, 1998.

21.
Motoyoshi M, Yoshida T, Ono A, Shimizu N : Effect of cortical bone thickness and implant placement torque on stability of orthodontic mini-implants. Int J Oral Maxillofac Implants. 22:779-784, 2007.

22.
Maki K, Miller A, Okano T, Shibasaki Y : Changes in cortical bone mineralization in the developing mandible : a three-dimensional quantitative computed tomography study. J Bone Miner Res, 15: 700-709, 2000.

23.
Wang Z, Zhao Z, Xue J, et al. : Pullout strength of miniscrews placed in anterior mandibles of adult and adolescent dogs : A microcomputed tomographic analysis. Am J Orthod Dentofacial Orthop, 137:100- 107, 2010. crossref(new window)

24.
Homolka P, Beer A, Birkfellner W, et al. : Bone mineral density measurement with dental quantitative CT prior to dental implant placement in cadaver mandibles : pilot study. Radiology, 224:247-252, 2002. crossref(new window)

25.
임종원, 김왕식, 김일규 등 : 교정용 미니스크류 식립 시 스크류의 길이, 직경 및 피질골 두께에 따른 응력 분포에 관한 3차원 유한요소법적 연구. 대한치과교정학회지, 33: 11-20, 2003.

26.
Motoyoshi M, Uemura M, Ono A, et al. : Factors affecting the long-term stability of orthodontic miniimplants. Am J Orthod Dentofacial Orthop, 137: 588.e1-5, 2010.