In vitro evaluation of resistance to sliding in self-ligating and conventional bracket systems during dental alignment
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Objective: To investigate the resistance to sliding (RS) in self-ligating and conventional ligation bracket systems at 5 different second-order bracket angulations by using low-stiffness alignment wires in a 3-bracket experimental model and to verify the performance of the main RS components in both systems when these wires are used. Methods: Interactive self-ligating brackets with closed and open slides were used for the self-ligating (SL) and conventional ligation (CL) groups, respectively; elastomeric ligatures (1 mm inner diameter) were used in the latter system. The alignment wire used was 0.014 inch heat-activated NiTi (austenitic finish temperature set at 36°C by the manufacturer). A custom-made testing machine was used to measure frictional resistance. Tests were repeated 5 times at every angulation simulated. All data were analyzed statistically. Results: The RS increased significantly with increasing angulation in both SL and CL groups (p < 0.0001). However, the RS values were significantly higher at every angulation (p < 0.0001) in the CL group. Conclusions: Despite the relevance of the binding phenomenon, ligation forces predominantly affect the RS when low-stiffness alignment wires are used.
Abstract
Objective: To investigate the resistance to sliding (RS) in self-ligating and conventional ligation bracket systems at 5 different second-order bracket angulations by using low-stiffness alignment wires in a 3-bracket experimental model and to verify the performance of the main RS components in both systems when these wires are used. Methods: Interactive self-ligating brackets with closed and open slides were used for the self-ligating (SL) and conventional ligation (CL) groups, respectively; elastomeric ligatures (1 mm inner diameter) were used in the latter system. The alignment wire used was 0.014 inch heat-activated NiTi (austenitic finish temperature set at 36°C by the manufacturer). A custom-made testing machine was used to measure frictional resistance. Tests were repeated 5 times at every angulation simulated. All data were analyzed statistically. Results: The RS increased significantly with increasing angulation in both SL and CL groups (p < 0.0001). However, the RS values were significantly higher at every angulation (p < 0.0001) in the CL group. Conclusions: Despite the relevance of the binding phenomenon, ligation forces predominantly affect the RS when low-stiffness alignment wires are used.
참고문헌 (30)
- Dowling PA, "An investigation into the behavioural characteristics of orthodontic elastomeric modules", Br J Orthod, 25, pp.197~202 (1998)
- Kapila S, "Evaluation of friction between edgewise stainless steel brackets and orthodontic wires of four alloys", Am J Orthod Dentofacial Orthop, 98, pp.117~126 (1990)
- Voudouris JC, "Self-ligation esthetic brackets with low frictional resistance", Angle Orthod, 80, pp.188~194 (2010)
- Doshi UH, "Static frictional force and surface roughness of various bracket and wire combinations", Am J Orthod Dentofacial Orthop, 139, pp.74~79 (2011)
- Thorstenson G, "Influence of stainless steel inserts on the resistance to sliding of esthetic brackets with second-order angulation in the dry and wet states", Angle Orthod, 73, pp.167~175 (2003)
- Nishio C, "In vitro evaluation of frictional forces between archwires and ceramic brackets", Am J Orthod Dentofacial Orthop, 125, pp.56~64 (2004)
- Lucchese A, "An in vitro study of resistance to corrosion in brazed and laser-welded orthodontic appliances", Eur J Inflamm, 9, pp.67~72 (2011)
- Hain M, "The effect of ligation method on friction in sliding mechanics", Am J Orthod Dentofacial Orthop, 123, pp.416~422 (2003)
- Khambay B, "Archwire seating forces produced by different ligation methods and their effect on frictional resistance", Eur J Orthod, 27, pp.302~308 (2005)
- Chimenti C, "Friction of orthodontic elastomeric ligatures with different dimensions", Angle Orthod, 75, pp.421~425 (2005)
- Stefanos S, "Friction between various self-ligating brackets and archwire couples during sliding mechanics", Am J Orthod Dentofacial Orthop, 138, pp.463~467 (2010)
- Thomas S, "A comparative in vitro study of the frictional characteristics of two types of self-ligating brackets and two types of pre-adjusted edgewise brackets tied with elastomeric ligatures", Eur J Orthod, 20, pp.589~596 (1998)
- Articolo LC, "Influence of angulation on the resistance to sliding in fixed appliances", Am J Orthod Dentofacial Orthop, 115, pp.39~51 (1999)
- Thorstenson GA, "Effect of archwire size and material on the resistance to sliding of self-ligating brackets with second-order angulation in the dry state", Am J Orthod Dentofacial Orthop, 122, pp.295~305 (2002)
- Thorstenson GA, "Comparison of resistance to sliding between different self-ligating brackets with second-order angulation in the dry and saliva states", Am J Orthod Dentofacial Orthop, 121, pp.472~482 (2002)
- Frank CA, "A comparative study of frictional resistances between orthodontic bracket and arch wire", Am J Orthod, 78, pp.593~609 (1980)
- Drescher D, "Frictional forces between bracket and arch wire", Am J Orthod Dentofacial Orthop, 96, pp.397~404 (1989)
- Kusy RP, "Ongoing innovations in biomechanics and materials for the new millennium", Angle Orthod, 70, pp.366~376 (2000)
- Burrow SJ, "Friction and resistance to sliding in orthodontics: a critical review", Am J Orthod Dentofacial Orthop, 135, pp.442~447 (2009)
- Pizzoni L, "Frictional forces related to self-ligating brackets", Eur J Orthod, 20, pp.283~291 (1998)
- Henao SP, "Evaluation of the frictional resistance of conventional and self-ligating bracket designs using standardized archwires and dental typodonts", Angle Orthod, 74, pp.202~211 (2004)
- Henao SP, "Frictional evaluations of dental typodont models using four self-ligating designs and a conventional design", Angle Orthod, 75, pp.75~85 (2005)
- Wilkinson PD, "Load-deflection characteristics of superelastic nickeltitanium orthodontic wires", Am J Orthod Dentofacial Orthop, 121, pp.483~495 (2002)
- Matarese G, "Evaluation of frictional forces during dental alignment: an experimental model with 3 nonleveled brackets", Am J Orthod Dentofacial Orthop, 133, pp.708~715 (2008)
- Moore RJ, "Intra-oral temperature variation over 24 hours", Eur J Orthod, 21, pp.249~261 (1999)
- Liaw YC, "Stiffness and frictional resistance of a superelastic nickel-titanium orthodontic wire with low-stress hysteresis", Am J Orthod Dentofacial Orthop, 131, pp.578~ (2007)
- Marshall SD, "Ask us. Self-ligating bracket claims", Am J Orthod Dentofacial Orthop, 138, pp.128~131 (2010)
- Aversa R, "Non-linear elastic three-dimensional finite element analysis on the effect of endocrown material rigidity on alveolar bone remodeling process", Dent Mater, 25, pp.678~690 (2009)
- Moore MM, "Factors affecting friction in the pre-adjusted appliance", Eur J Orthod, 26, pp.579~583 (2004)
- Kim TK, "Comparison of frictional forces during the initial leveling stage in various combinations of self-ligating brackets and archwires with a custom-designed typodont system", Am J Orthod Dentofacial Orthop, 133, pp.187~ (2008)