Influence of the Geometric Characteristics of the Mini-Implants on Mechanicals Properties Using Artificial Bone Similar to Anterior, Middle and Posterior Regions of the Jaws

Abstract:

The objective of this study was to identify the best torque of insertion and removal of mini-implants with a twin screw design (compact and self-drilling) into artificial bones with density and trabecular thickness, similar to anterior, middle and posterior regions of the jaws. Observation of the mini-implants surface using electron microscopy was performed before and after the tests. The torque values obtained during the insertion and removal was measured by digital torque wrench. The analyzed results led to the conclusion that the insertion and removal torques were larger with increase in bone density and cortical thickness. The design of the threads of the mini-implants influenced the insertion torque. Threads with smaller pitch increased the value of insertion torque. The anterior bone drilling installation reduces the insertion torque independent of bone density. Torque increased mainly by increasing the bone density and not necessarily with increased cortical thickness suggesting that the bone density of the trabecular bone must be considered in designing the installation of mini-implants.

• Periodical: Materials Science Forum (Volume 930)
• Pages: 276-282
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.930.276
• Online since: September 2018
• Authors: Eliana Pesqueira*, Cristiano Stefano Mucsi, J.L. Rossi
• Keywords: Bone Density, Mechanical Properties, Mini-Implants, Threads, Torque

References

[1] S. Baumgaertel, S. Sorapan, J.M. Palomo: American Journal of Orthodontics and Dentofacial Orthopedics Vol. 149 (3) (2016), p.411.

[2] Y.C. Wang, E.J.W Liou: American Journal of Orthodontics and Dentofacial Orthopedics Vol. 133 (1) (2008), p.38.

[3] S.S, Huja, A.S.F. M Litsky, K.A. Beck, P.E. Johnson: American Journal of Orthodontics and Dentofacial Orthopedics, Vol. 127 (3) (2005), p.307.

DOI: 10.1016/j.ajodo.2003.12.023

[4] Misch, Qu Zhimin, M.W. Bidez: Journal of Oral and Maxillofacial Surgery Vol. 57 (6) (1999), p.700.

[5] M. Motoyoshi, T. Yoshida, A. Ono, N. Shimizu: Int Journal of Oral Maxillofacial Implants Vol. 22 (2007), p.779.

[6] J. Park, H.J. Cho: American Journal of Orthodontics and Dentofacial Orthopedics Vol. 136 (3) (2009), p.312.

[7] S. Baumgaertel, M.G. Hans: American Journal of Orthodontics and Dentofacial Orthopedics Vol. 136 (2) (2009), p.230.

[8] J. Peterson, Q. Wang, P.C. Dechow: The Anatomical Record Part A: Discoveries in Molecular, Cellular and Evolutionary Biology Vol. 288 (9) (2006), p.962.

DOI: 10.1002/ar.a.20358

[9] J.H. Kim, Y.C. Park: The Korean Journal of Orthodontics Vol. 42 (3) (2012), p.110.

[10] J.E. Lim, W.H. Lim, Y.S. Chun: Clinical Anatomy Vol. 21 (6) (2008), p.486.

[11] K.S. Hu, M. K. Kang, T.W. Kim, K.H. Kim, H.J. Kim: The Angle Orthodontist Vol. 79 (1) (2009), p.37.

[12] S. AlSamak, N. Gkantidis, N.E. Bitsanis, P. Christou: International Journal of Oral & Maxillofacial Implants Vol. 27 (4) (2012), p.875.

[13] B. Wilmes, C. Rademacher, G. Olthoff, D. Drescher: Journal of Orofacial Orthopedics Vol. 67 (3) (2006), p.162.

[14] B. Wilmes et al.: Journal of Orofacial Orthopedics Vol. 69 (1) (2008), p.42.

[15] B. Wilmes, D. Drescher: The Angle Orthodontist Vol. 79 (4) (2009), p.609.

[16] S. Baumgaertel: American Journal of Orthodontics and Dentofacial Orthopedics Vol. 137 (6) (2010), p.825.

[17] Y. K. Kim, Y. J. Kim, P. Y. Yun, J. W. Kim: Angle Orthodontics Vol. 79 (5) (2009), p.908.

[18] V. Katić, E. Kamenar, D. Blažević, S. Špalj: The Korean Journal of Orthodontics Vol. 44 (4) (2014), p.177.

DOI: 10.4041/kjod.2014.44.4.177