Comparison of friction produced by two types of orthodontic bracket protectors

Fixed orthodontic appliances have been regarded as a common causative factor of oral lesions. To manage soft tissue discomfort, most orthodontists recommend using a small amount of utility wax over the brackets in order to alleviate trauma. This in vitro study aimed at evaluating friction generated...

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Bibliographic Details
Published in:	Dental press journal of orthodontics Vol. 19; no. 1; pp. 86 - 91
Main Authors:	de Lima Mendonça, Steyner, Praxedes Neto, Otávio José, de Oliveira, Patricia Teixeira, dos Santos, Patricia Bittencourt Dutra, de Sá Leitão Pinheiro, Fábio Henrique
Format:	Journal Article
Language:	English
Published:	Brazil Dental Press International 01-01-2014 Dental Press Editora
Subjects:	Acetates - chemistry Braquetes ortodônticos Composite Resins - chemistry Dental Alloys - chemistry Dental Stress Analysis - instrumentation Dentistry DENTISTRY, ORAL SURGERY & MEDICINE Elasticity Equipment Design Friction Fricção Humans Materials Testing Mouth Protectors Nickel - chemistry Orthodontic Appliance Design Orthodontic Brackets Orthodontic Wires Ortodontia Stainless Steel - chemistry Surface Properties Titanium - chemistry Friction Orthodontics Orthodontic brackets Fricção Ortodontia Braquetes ortodônticos
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Summary:	Fixed orthodontic appliances have been regarded as a common causative factor of oral lesions. To manage soft tissue discomfort, most orthodontists recommend using a small amount of utility wax over the brackets in order to alleviate trauma. This in vitro study aimed at evaluating friction generated by two types of bracket protectors (customized acetate protector [CAP] and temporary resin protector [TRP]) during the initial stages of orthodontic treatment. An experimental model (test unit) was used to assess friction. In order to measure the friction produced in each test, the model was attached to a mechanical testing machine which simulated maxillary canines alignment. Intergroup comparison was carried out by one-way ANOVA with level of significance set at 5%. The friction presented by the TRP group was statistically higher than that of the control group at 6 mm. It was also higher than in the control and CAP groups in terms of maximum friction. The customized acetate protector (CAP) demonstrated not to interfere in friction between the wire and the orthodontic bracket slot.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2176-9451 2177-6709 2177-6709 2176-9451
DOI:	10.1590/2176-9451.19.1.086-091.oar