Pain, masticatory performance and swallowing threshold in orthodontic patients

The aim of this study was to assess pain, masticatory performance and swallowing threshold of patients undergoing orthodontic treatment. Ten patients of both genders (mean age of 17.25 ± 5.21 years), with complete permanent dentition, who underwent orthodontic treatment with fixed appliances were ev...

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Bibliographic Details
Published in:	Dental press journal of orthodontics Vol. 18; no. 6; pp. 117 - 123
Main Authors:	Trein, Marcos Porto, Mundstock, Karina Santos, Maciel, Leonardo, Rachor, Jaqueline, Gameiro, Gustavo Hauber
Format:	Journal Article
Language:	English
Published:	Brazil Dental Press International 01-12-2013 Dental Press Editora
Subjects:	Adolescent Deglutition - physiology Dental Alloys - chemistry Dentistry DENTISTRY, ORAL SURGERY & MEDICINE Elastomers - chemistry Female Follow-Up Studies Humans Male Mastication - physiology Mastigação Má oclusão Nickel - chemistry Orthodontic Appliances Orthodontic Wires Ortodontia Pain - physiopathology Pain Measurement Particle Size Sensory Thresholds - physiology Stainless Steel - chemistry Time Factors Titanium - chemistry Malocclusion Mastication Orthodontics Má oclusão Mastigação Ortodontia
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Summary:	The aim of this study was to assess pain, masticatory performance and swallowing threshold of patients undergoing orthodontic treatment. Ten patients of both genders (mean age of 17.25 ± 5.21 years), with complete permanent dentition, who underwent orthodontic treatment with fixed appliances were evaluated. The masticatory performance and the swallowing threshold were assessed by patient's individual capacity of fragmenting an artificial test food (Optocal) which was chewed and had the resulting particles processed by a standardized sieving method, presenting the median particle size (MPS) of crushed units. The intensity of pain / discomfort during chewing was evaluated by means of a visual analog scale. All tests were performed at the following times: T0 - before activating the orthodontic appliance; T1 - 24 hours after activation, and T2 - 30 days after activation. The results showed a significant increase in pain at T1 (T0 = 0.60 ± 0.70 mm; T1 = 66.2 ± 34.5 mm), returning to baseline values at T2 (3.20 ± 3.82 mm). Masticatory performance was also reduced in T1 (MPS = 10.15 ± 1.1 mm2) in comparison to T0 (MPS 7.01 ± 2.9 mm2) and T2 (MPS 6.76 ± 1.3 mm2). However, particle size was not affected in the swallowing threshold test (T0 = 5.47 ± 2.37 mm2; T1 = 6.19 ± 2.05 mm2; T2 = 5.94 ± 2.36 mm2). The orthodontic appliances did not interfere in the size of the particles that would be swallowed, even in the presence of pain.
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/S2176-94512013000600018