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VOLUME 17 , ISSUE 11 ( November, 2016 ) > List of Articles

RESEARCH ARTICLE

Effect of Intraoral Aging on Debris Accumulation and Friction of First Molar Tubes

Edmond Chaptini, Elie Khoury, Vittorio Cacciafesta, Nada Naaman

Citation Information : Chaptini E, Khoury E, Cacciafesta V, Naaman N. Effect of Intraoral Aging on Debris Accumulation and Friction of First Molar Tubes. J Contemp Dent Pract 2016; 17 (11):914-919.

DOI: 10.5005/jp-journals-10024-1953

Published Online: 01-03-2017

Copyright Statement:  Copyright © 2016; The Author(s).


Abstract

Aim

The aim of this article was to evaluate the impact of intraoral aging and site specificity on debris accumulation and friction in molar tubes after intraoral use.

Materials and methods

A total of 80 intraorally used first molar convertible tubes were provided by 20 orthodontic adolescent patients after 6 months of treatment. The specimens were divided into eight groups (n = 10) according to the mouth quadrant and the type of examination [four groups of ten tubes for scanning electron microscope (SEM) and four groups of ten tubes for friction test]. Scanning electron microscope examination was performed after opening the convertible caps and friction test was executed using a 0.019” × 0.025” stainless steel wire, which was inserted in the tubes belonging to each group. The Mann. Whitney test, analysis of variance (ANOVA), and Bonferroni tests were performed for statistical analysis at 0.01 level of significance.

Results

There was a significant increase in the amount of debris and frictional force after 6 months of intraoral exposure (p < 0.0001). Debris scores were higher (10% increase) on the upper tubes when compared with the lower ones, with no statistical difference. Mean frictional force ranged from 0.22 to 0.26 N according to the mouth quadrant, but the difference between groups was also not significant.

Conclusion

After 6 months of intraoral exposure, there was a significant increase in the amount of debris in the first molar tube slots, leading to significantly higher frictional forces during sliding mechanics. The influence of site specificity on the amount of debris and on frictional forces of the first molar tubes could not be demonstrated.

Clinical significance

Molar tubes should be cleaned, before and during sliding mechanics, in order to minimize friction.

How to cite this article

Chaptini E, Khoury E, Cacciafesta V, Naaman N. Effect of Intraoral Aging on Debris Accumulation and Friction of First Molar Tubes. J Contemp Dent Pract 2016;17(11):914-919.


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  1. Friction: an overview. Semin Orthod 2003 Dec;9(4):218-222.
  2. Friction and resistance to sliding in orthodontics: a critical review. Am J Orthod Dentofacial Orthop 2009 Apr;135(4):442-447.
  3. Evaluation of friction between edgewise stainless steel brackets and orthodontic wires of four alloys. Am J Orthod Dentofacial Orthop 1990 Aug;98(2):117-126.
  4. Evaluation of friction of conventional and metal-insert ceramic brackets in various bracket-archwire combinations. Am J Orthod Dentofacial Orthop 2003 Apr;123(4):403-409.
  5. Comparison of frictional forces during the initial leveling stage in various combinations of self-ligation brackets and archwires with custom-designed typodont system. Am J Orthod Dentofacial Orthop 2008 Jan;133(1):15-24.
  6. A comparative study of frictional resistances between orthodontic racket and arch wire. Am J Orthod Dentofacial Orthop 1980 Dec;78(6):593-609.
  7. Resistance to sliding of selfligating brackets versus conventional stainless steel twin brackets with second-order angulation in the dry and wet (saliva) states. Am J Orthod Dentofacial Orthop 2001 Oct;120(4):361-370.
  8. Coefficients of friction for arch wires in stainless steel and polycrystalline alumina brackets slots. I. The dry states. Am J Orthod Dentofacial Orthop 1990 Oct;98(4):300-312.
  9. In vitro friction of stainless steel arch wire-bracket combination in air and different aqueous solutions. Orthod Craniofacial Res 2005 May;8(2):96-105.
  10. Friction: validation of manufacturer's claim. Semin Orthod 2003 Dec;9(4):236-250.
  11. Quantified simulation of canine retraction: evaluation of frictional resistance. Semin Orthod 2003 Dec;9(4):262-280.
  12. Debris, roughness and friction of stainless steel archwires following clinical use. Angle Orthod 2010 May;80(3):521-527.
  13. The effect of surface treatment and clinical use on friction in NiTi orthodontic wires. Dent Mater 2005 Oct;21(10):938-945.
  14. Debris and friction of self-ligating and conventional orthodontic brackets after clinical use. Angle Orthod 2015 Jul;85(4):673-677.
  15. Frictional forces between bracket and arch wire. Am J Orthod Dentofacial Orthop 1989 Nov;96(5):397-404.
  16. A SEM evaluation of debris removal from endodontic files after cleaning and steam sterilization procedures. Aust Dent J 2004 Sep;49(3):128-135.
  17. Intraoral aging of orthodontic materials: the picture we miss and its clinical relevance. Am J Orthod Dentofacial Orthop 2005 Apr;127(4):403-412.
  18. Surface characterization of retrieved NiTi orthodontic archwires. Eur J Orthod 2000 Jun;22(3):317-326.
  19. Morphological characterization of as-received and in vivo orthodontic stainless steel archwires. Eur J Orthod 2009 Jun;31(3):260-265.
  20. Why does supragingival calculus form preferentially on the lingual surface of the 6 lower anterior teeth? J Can Dent Assoc 2006 Dec;72(10):923-926.
  21. Comparison of resistance to sliding between different self-ligating brackets with secondorder angulation in the dry and saliva states. Am J Orthod Dentofacial Orthop 2002 May;121(5):472-482.
  22. Frictional resistance in self-ligating orthodontic brackets and conventionally ligated brackets. Angle Orthod 2009 May;79(3):592-601.
  23. Archwire cleaning after intraoral aging: the effects on debris, roughness, and friction. Eur J Orthod 2013 Apr;35(2):223-229.
  24. Effect of sodium bicarbonate air abrasive polishing on attrition and surface micromorphology of ceramic and stainless steel brackets. Angle Orthod 2012 Mar;82(2):351-362.
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