Anatomical assessment of cortical bone in mandibular buccal shelf in adults for orthodontic bone screw in a sample of population in Erbil city (a CBCT study).

Authors

  • Naz Tariq Karim Orthodontics Department, College of Dentistry, Tishk International University.
  • Omar Fawzi Chawshli Department of POP, College of Dentistry, Hawler Medical University, Erbil, Iraq.

DOI:

https://doi.org/10.15218/edj.2022.3

Keywords:

CBCT, Orthodontic bone screw, Buccal shelf, Cortical bone

Abstract

Background and objectives: The important factors for placing orthodontic bone screw include thickness of the cortical bone, width of the buccal shelf bone, insertion depth of the screw and the proximity from the inferior alveolar nerve. This study aimed to anatomically assess the mandibular buccal shelf as the insertion site for orthodontic bone screw and determine any differences according to side and gender.
Methods: The study included 20 adult patients (10 males, 10 females; average age, 20-40 years). The measurements were made on cone-beam computed tomography (CBCT) scans of these 20 untreated orthodontic patients. The measurements were taken at mesiobuccal root, distobuccal root of the first molar, mesiobuccal root and distobuccal root of the second molar. The cortical bone thickness was measured at the 4 sites. The buccal shelf bone width was measured 4, 6 and 8 mm below cemento-enamel junction at the 4 sites. The distance between the inferior alveolar nerve canal and the outer surface of the cortical bone at the same 4 sites was measured.
Results: The cortical bone thickness showed the most thickness at the mesiobuccal root area of the first molar and least thickness at the distobuccal root area of the second molar. Regarding the buccal shelf width 4, 6 and 8 mm below cemento-enamel junction the thinnest site was mesiobuccal root of first molar and the thickest site was distobuccal root of second molar. For the distance from nerve the mesiouccal root area of the first molar was
the nearest and the mesiobuccal root area of the second molar was the furthest. No significant differences were found between the right and left sides of males and females.
Conclusions: The mesiobuccal side of the mandibular second molar is considered as the most appropriate site for the bone screw placement in the buccal shelf area.

References

Chang HP, Tseng YC. Miniscrew implant applications in contemporary orthodontics. Kaohsiung J Med Sci. 2014;30:111–5.

Raghavendra S, Wood MC, Taylor TD. Early wound healing around endosseous implants: a review of the literature. Int J Oral Maxillofac Implants. 2005;20:425–31.

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. 2007;103:e6–e15.

Nienkemper M, Pauls A, Ludwig B, Wilmes B, Drescher D. Multifunctional use of palatal miniimplants. J Clin Orthod. 2012;46:679–86.

Chandhoke TK, Nanda R, Uribe FA. Clinical applications of predictable force systems, part 2: miniscrewanchorage. J Clin Orthod. 2015; 49:229–39.

Zawawi KH. Acceptance of orthodontic miniscrews as temporary anchorage devices. Pat Pref Adher. 2014;8:933–37.

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.

Papadopoulos MA, Papageorgiou SN, Zogakis IP. Clinical effectiveness of orthodontic miniscrew implants: a metaanalysis. J Dent Res. 2011;90:969–76.

Baumgaertel S. Cortical bone thickness and bone depth of the posterior palatal alveolar process for mini-implant insertion in adults. Am J Orthod Dentofacial Orthop. 2011;140:806–11.

Berglundh T, Abrahamsson I, Lang NP, Lindhe J. De novo alveolar bone formation adjacent to endosseous implants. Clin Oral Implants Res. 2003;14:251–62.

Gracco A, Lombardo L, Cozzani M, Siciliani G. Quantitative cone-beam computed tomography evaluation of palatal bone thickness for orthodontic miniscrew placement. Am J Orthod Dentofacial Orthop. 2008;134:361–69.

Poggio PM, Incorvati C, Velo S, Carano A. ‘‘Safe zones’’: a guide for miniscrew positioning in the maxillary and mandibular arch. Angle Orthod. 2006;76:191–7.

Poletti L, Silvera AA, Ghislanzoni LT. Dentoalveolar Class III treatment using retromolar miniscrew anchorage. Prog Orthod. 2013;14:7.

Baumgaertel S, Hans MG. Assessment of infrazygomatic bone depth for mini-screw insertion. Clin Oral Implants Res. 2009;20:638–42.

Baumgaertel S, Hans MG. Buccal cortical bone thickness for mini-implant placement. Am J Orthod Dentofacial Orthop. 2009;136:230–35.

Chang C, Liu SS, Roberts WE. Primary failure rate for 1680 extra-alveolar mandibular buccal shelf mini-screws placed in movable mucosa or attached gingiva. Angle Orthod. 2015;85:905–10.

Jong Lin JL. Text book of Creative Orthodontics: Blending the Damon System and TADs to Manage Difficult Malocclusions. Taipei, Taiwan: Yong Chieh; 2007.

Lin J, Eugene Roberts W. CBCT imaging to diagnose and correct the failure of maxillary arch retraction with IZC screw anchorage. Int I Orthop Implantol. 2014;35:4–17.

Ghosh A. Infra-Zygomatic Crest and Buccal Shelf – Orthodontic Bone Screws: A Leap Ahead of Micro-Implants-Clinical Perspectives. Journal of Indian Orthodontic Society. 2018;52:127–41.

Elshebiny T, Palomo JM, Baumgaertel S. Anatomic assessment of mandibular buccal shelf for miniscrew insertion in white patients. American Journal of Orthodontics and Dentofacial Orthopedics. 2018;153(4):505–11.

Baumgaertel S. Quantitative investigation of palatal bone width and cortical bone thickness for mini-implant placement in adults. Am J Orthod Dentofacial Orthop 2009;136:104-8.

Wilmes B, Rademacher C, Olthoff G, Drescher D. Parameters affecting primary stability of orthodontic mini-implants. J Orofac Orthop 2006 May;67(3):162-74.

Motoyoshi M, Matsuoka M, Shimizu N. Application of orthodontic mini-implants in adolescents. Int J Oral Maxillofac Surg. 2007;36:695–9.

Miyawaki S, Koyama I, Inoue M, Mishima K, Sugahara T, Takano-Yamamoto T. Factors associated with the stability of titanium screws placed in the posterior region for orthodontic anchorage. Am J Orthod Dentofacial Orthop 2003;124:373-8.

Song YY, Cha JY, Hwang CJ. Mechanical characteristics of various orthodontic miniscrews in relation to artificial cortical bone thickness. Angle Orthod 2007;77:979-85.

Chang C, Sean SY, Liu W, Roberts WE. Primary failure rate for 1680 extra-alveolar mandibular buccal shelf mini screws placed in movable mucosa or attached gingiva. Angle Orthod 2015;85:905-10.

Downloads

Published

2022-07-30

How to Cite

1.
Karim NT, Fawzi Chawshli O. Anatomical assessment of cortical bone in mandibular buccal shelf in adults for orthodontic bone screw in a sample of population in Erbil city (a CBCT study). EDJ [Internet]. 2022 Jul. 30 [cited 2022 Aug. 10];5(1):19-30. Available from: https://edj.hmu.edu.krd/index.php/journal/article/view/155

Issue

Section

Original Articles