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Painful and non-painful symptoms evoked by experimental bracing and thrusting of the mandible in healthy individuals. / Kothari, Simple Futarmal; Visser, Meike; Timmerman, Kimberley et al.
I: Journal of Oral Rehabilitation, Bind 48, Nr. 9, 09.2021, s. 1004-1012.Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review
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TY - JOUR
T1 - Painful and non-painful symptoms evoked by experimental bracing and thrusting of the mandible in healthy individuals
AU - Kothari, Simple Futarmal
AU - Visser, Meike
AU - Timmerman, Kimberley
AU - Baad-Hansen, Lene
AU - Koutris, Michail
AU - Lobbezoo, Frank
AU - Svensson, Peter
N1 - © 2021 John Wiley & Sons Ltd.
PY - 2021/9
Y1 - 2021/9
N2 - BACKGROUND: Bruxism may involve bracing and thrusting of the mandible, in addition to clenching or grinding of the teeth. It is unclear how bracing and thrusting may contribute to potential musculoskeletal symptoms associated with bruxism.OBJECTIVE: To examine the effect of experimental bracing and thrusting of the mandible on the development of musculoskeletal symptoms in healthy volunteers.METHODS: Thirty healthy volunteers performed six trials of 5 min of repeated bracing and thrusting of the mandible. Bracing involved forcefully maintaining maximum protruded position (5 s with 1 s rest in between), whereas thrusting involved forcefully moving the mandible in a forward direction and back (1 Hz). The participants rated pain, unpleasantness, soreness, fatigue, tension, stiffness, stress and headache on 10-cm visual analogue scales (VAS) before, immediately and 24 h after the tasks. Pain drawings were obtained and maximum voluntary protrusive force (MVPF) was determined before and after the tasks. The outcome parameters for each task were compared between the time points.RESULTS: There was a significant increase in the VAS scores (2-4/10) of pain, unpleasantness, soreness, fatigue, tension, stiffness and stress immediately following the tasks compared to baseline and 24 h after the tasks (p < .008). Pain was frequently reported in masseter muscles. MVPF values were significantly higher immediately (p < .001) and 24 h after thrusting (p < .001) and bracing (p = .012) tasks compared to the baseline.CONCLUSIONS: Experimental bracing and thrusting of the mandible evoked transient, mild-to-moderate levels of muscle pain, fatigue, tension and stiffness and increased unpleasantness and stress scores in healthy volunteers.
AB - BACKGROUND: Bruxism may involve bracing and thrusting of the mandible, in addition to clenching or grinding of the teeth. It is unclear how bracing and thrusting may contribute to potential musculoskeletal symptoms associated with bruxism.OBJECTIVE: To examine the effect of experimental bracing and thrusting of the mandible on the development of musculoskeletal symptoms in healthy volunteers.METHODS: Thirty healthy volunteers performed six trials of 5 min of repeated bracing and thrusting of the mandible. Bracing involved forcefully maintaining maximum protruded position (5 s with 1 s rest in between), whereas thrusting involved forcefully moving the mandible in a forward direction and back (1 Hz). The participants rated pain, unpleasantness, soreness, fatigue, tension, stiffness, stress and headache on 10-cm visual analogue scales (VAS) before, immediately and 24 h after the tasks. Pain drawings were obtained and maximum voluntary protrusive force (MVPF) was determined before and after the tasks. The outcome parameters for each task were compared between the time points.RESULTS: There was a significant increase in the VAS scores (2-4/10) of pain, unpleasantness, soreness, fatigue, tension, stiffness and stress immediately following the tasks compared to baseline and 24 h after the tasks (p < .008). Pain was frequently reported in masseter muscles. MVPF values were significantly higher immediately (p < .001) and 24 h after thrusting (p < .001) and bracing (p = .012) tasks compared to the baseline.CONCLUSIONS: Experimental bracing and thrusting of the mandible evoked transient, mild-to-moderate levels of muscle pain, fatigue, tension and stiffness and increased unpleasantness and stress scores in healthy volunteers.
KW - awake bruxism
KW - bracing of mandible
KW - bruxism
KW - painful and non-painful symptoms
KW - thrusting of mandible
U2 - 10.1111/joor.13222
DO - 10.1111/joor.13222
M3 - Journal article
C2 - 34191303
VL - 48
SP - 1004
EP - 1012
JO - Journal of Oral Rehabilitation
JF - Journal of Oral Rehabilitation
SN - 0305-182X
IS - 9
ER -