RT Journal Article
T1 Temporomandibular disorders: the habitual chewing side syndrome
A1 Santana Mora, Urbano
A1 López Cedrún, José Luis
A1 Mora Bermúdez, María Jesús
A1 Otero Cepeda, Xosé Luis
A1 Santana Penín, Urbano
AB Background:Temporomandibular disorders are the most common cause of chronic orofacial pain, but, except where theyoccur subsequent to trauma, their cause remains unknown. This cross-sectional study assessed chewing function (habitualchewing side) and the differences of the chewing side and condylar path and lateral anterior guidance angles in participantswith chronic unilateral temporomandibular disorder. This is the preliminary report of a randomized trial that aimed to testthe  effect  of  a  new  occlusal  adjustment  therapy.Methods:The  masticatory  function  of  21  randomly  selected  completely  dentate  participants  with  chronic  temporoman-dibular disorders (all but one with unilateral symptoms) was assessed by observing them eat almonds, inspecting the lateralhorizontal movement of the jaw, with kinesiography, and by means of interview. The condylar path in the sagittal plane andthe  lateral  anterior  guidance  angles  with  respect  to  the  Frankfort  horizontal  plane  in  the  frontal  plane  were  measured  onboth  sides  in  each  individual.Results:Sixteen  of 20  participants  with  unilateral symptoms  chewed on  the affected  side;  the concordance (Fisher’s  exacttest,  P = .003)  and  the  concordance-symmetry  level  (Kappa  coefficientk= 0.689;  95%  confidence  interval  [CI],  0.38  to  0.99;P = .002)  were  significant.  The  mean  condylar  path  angle  was  steeper  (53.47(10.88)  degrees  versus  46.16(7.25)  degrees;P = .001), and the mean lateral anterior guidance angle was flatter (41.63(13.35) degrees versus 48.32(9.53) degrees P = .036)on  the  symptomatic  side.Discussion:The results of this study support the use of a new term based on etiology, ‘‘habitual chewing side syndrome’’,instead  of  the  nonspecific  symptom-based  ‘‘temporomandibular  joint  disorders’’;  this  denomination  is  characterized  inadults  by  a  steeper  condylar  path,  flatter  lateral  anterior  guidance,  and  habitual  chewing  on  the  symptomatic  side
PB PLOS
YR 2013
FD 2013
LK http://hdl.handle.net/10347/21972
UL http://hdl.handle.net/10347/21972
LA eng
NO Santana-Mora U, López-Cedrún J, Mora MJ, Otero XL, Santana-Penín U (2013) Temporomandibular Disorders: The Habitual Chewing Side Syndrome. PLoS ONE 8(4): e59980. https://doi.org/10.1371/journal.pone.0059980
NO This study was financed with a grant PI11/02507 from the Institute of Health Carlos III of the Ministry of Science and Innovation of the Government of Spain. It was completed with the equipment granted by the General Directorate of Universities and Research; Department of Education and University. Xunta de Galicia. Official Journal No. 143 Galicia, July 22, 1996. And the Department of Innovation, Industry and Commerce. Xunta de Galicia, April 30, 2004
DS Minerva
RD 29 abr 2026