Effect of archwire stiffness and friction on maxillary posterior segment displacement during anterior segment retraction: A three-dimensional finite element analysis
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Objective: Sliding mechanics using orthodontic miniscrews is widely used to stabilize the anchorage during extraction space closure. However, previous studies have reported that both posterior segment displacement and anterior segment displacement are possible, depending on the mechanical properties of the archwire. The present study aimed to investigate the effect of archwire stiffness and friction change on the displacement pattern of the maxillary posterior segment during anterior segment retraction with orthodontic miniscrews in sliding mechanics. Methods: A three-dimensional finite element model was constructed. The retraction point was set at the archwire level between the lateral incisor and canine, and the orthodontic miniscrew was located at a height of 8 mm from the archwire between the second premolar and first molar. Archwire stiffness was simulated with rectangular stainless steel wires and a rigid body was used as a control. Various friction levels were set for the surface contact model. Displacement patterns for the posterior and anterior segments were compared between the conditions. Results: Both the anterior and posterior segments exhibited backward rotation, regardless of archwire stiffness or friction. Among the conditions tested in this study, the least undesirable rotation was found with low archwire stiffness and low friction. Conclusions: Posterior segment displacement may be unavoidable but reducing the stiffness and friction of the main archwire may minimize unwanted rotations during extraction space closure.
Abstract
Objective: Sliding mechanics using orthodontic miniscrews is widely used to stabilize the anchorage during extraction space closure. However, previous studies have reported that both posterior segment displacement and anterior segment displacement are possible, depending on the mechanical properties of the archwire. The present study aimed to investigate the effect of archwire stiffness and friction change on the displacement pattern of the maxillary posterior segment during anterior segment retraction with orthodontic miniscrews in sliding mechanics. Methods: A three-dimensional finite element model was constructed. The retraction point was set at the archwire level between the lateral incisor and canine, and the orthodontic miniscrew was located at a height of 8 mm from the archwire between the second premolar and first molar. Archwire stiffness was simulated with rectangular stainless steel wires and a rigid body was used as a control. Various friction levels were set for the surface contact model. Displacement patterns for the posterior and anterior segments were compared between the conditions. Results: Both the anterior and posterior segments exhibited backward rotation, regardless of archwire stiffness or friction. Among the conditions tested in this study, the least undesirable rotation was found with low archwire stiffness and low friction. Conclusions: Posterior segment displacement may be unavoidable but reducing the stiffness and friction of the main archwire may minimize unwanted rotations during extraction space closure.
참고문헌 (30)
- Upadhyay M, "Treatment effects of mini-implants for en-masse retraction of anterior teeth in bialveolar dental protrusion patients : a randomized controlled trial", Am J Orthod Dentofacial Orthop, 134, pp.18.e1~29.e1 (2008)
- Jae-Won Song, "Finite element analysis of maxillary incisor displacement during en-masse retraction according to orthodontic mini-implant position", 대한치과교정학회지, 46(4), pp.242~252 (2016), 대한치과교정학회
- Bechtold TE, "Distalization pattern of the maxillary arch depending on the number of orthodontic miniscrews", Angle Orthod, 83, pp.266~273 (2013)
- Upadhyay M, "Mini-implant anchorage for en-masse retraction of maxillary anterior teeth : a clinical cephalometric study", Am J Orthod Dentofacial Orthop, 134, pp.803~810 (2008)
- Kojima Y, "Finite element analysis of the effect of force directions on tooth movement in extraction space closure with miniscrew sliding mechanics", Am J Orthod Dentofacial Orthop, 142, pp.501~508 (2012)
- Kojima Y, "Numeric simulations of en-masse space closure with sliding mechanics", Am J Orthod Dentofacial Orthop, 138, pp.702.e1~702e6 (2010)
- Tominaga JY, "Effect of bracket slot and archwire dimensions on anterior tooth movement during space closure in sliding mechanics : a 3-dimensional finite element study", Am J Orthod Dentofacial Orthop, 146, pp.166~174 (2014)
- Moore JC, "Factors affecting tooth movement in sliding mechanics", Eur J Orthod, 15, pp.235~241 (1993)
- Sung SJ, "A comparative evaluation of different compensating curves in the lingual and labial techniques using 3D FEM", Am J Orthod Dentofacial Orthop, 123, pp.441~450 (2003)
- Lee KJ, "Displacement pattern of the maxillary arch depending on miniscrew position in sliding mechanics", Am J Orthod Dentofacial Orthop, 140, pp.224~232 (2011)
- Jung MH, "Biomechanical considerations in treatment with miniscrew anchorage. Part 1: the sagittal plane", J Clin Orthod, 42, pp.79~83 (2008)
- Kojima Y, "A finite element simulation of initial movement, orthodontic movement, and the centre of resistance of the maxillary teeth connected with an archwire", Eur J Orthod, 36, pp.255~261 (2014)
- Wakabayashi N, "Nonlinear finite element analyses : advances and challenges in dental applications", J Dent, 36, pp.463~471 (2008)
- 정득룡, "3차원 영상을 이용한 상악 소구치 발치공간 폐쇄 후 상악 구치부 회전양상의 평가", 대한치과교정학회지, 35(6), pp.451~458 (2005), 대한치과교정학회
- Andrews LF, "The six keys to normal occlusion", Am J Orthod, 62, pp.296~309 (1972)
- Coolidge ED, "The thickness of the human periodontal membrane", J Am Dent Assoc, 24, pp.1260~1270 (1937)
- Andrews LF, "The straight-wire appliance. Explained and compared", J Clin Orthod, 10, pp.174~195 (1976)
- Papageorgiou SN, "Effect of material variation on the biomechanical behaviour of orthodontic fixed appliances : a finite element analysis", Eur J Orthod, 38, pp.300~307 (2016)
- Reimann S, "Biomechanical finite-element investigation of the position of the centre of resistance of the upper incisors", Eur J Orthod, 29, pp.219~224 (2007)
- Kusy RP, "Comparison of the frictional coefficients for selected archwire-bracketslot combinations in the dry and wet states", Angle Orthod, 61, pp.293~302 (1991)
- Kojima Y, "Numerical simulation of canine retraction by sliding mechanics", Am J Orthod Dentofacial Orthop, 127, pp.542~551 (2005)
- Tenenbaum H, "A clinical study of the width of the attached gingiva in the deciduous, transitional and permanent dentitions", J Clin Periodontol, 13, pp.270~275 (1986)
- Tominaga JY, "Optimal loading conditions for controlled movement of anterior teeth in sliding mechanics", Angle Orthod, 79, pp.1102~1107 (2009)
- Sia S, "Determining the center of resistance of maxillary anterior teeth subjected to retraction forces in sliding mechanics. An in vivo study", Angle Orthod, 77, pp.999~1003 (2007)
- Viecilli RF, "Axes of resistance for tooth movement : does the center of resistance exist in 3-dimensional space", Am J Orthod Dentofacial Orthop, 143, pp.163~172 (2013)
- Nanda R, "Temporary anchorage devices in orthodontics", pp.116~118 (2008), Mosby
- Upadhyay M, "Vertical-dimension control during en-masse retraction with miniimplant anchorage", Am J Orthod Dentofacial Orthop, 138, pp.96~108 (2010)
- Hamanaka R, "Numeric simulation model for long-term orthodontic tooth movement with contact boundary conditions using the finite element method", Am J Orthod Dentofacial Orthop, 152, pp.601~612 (2017)
- Kusy RP, "Influence of archwire and bracket dimensions on sliding mechanics : derivations and determinations of the critical contact angles for binding", Eur J Orthod, 21, pp.199~208 (1999)
- Kusy RP, "Friction between different wire-bracket configurations and materials", Semin Orthod, 3, pp.166~177 (1997)