PMID- 11874514
OWN - NLM
STAT- MEDLINE
DCOM- 20020531
LR  - 20190906
IS  - 0305-182X (Print)
IS  - 0305-182X (Linking)
VI  - 28
IP  - 12
DP  - 2001 Dec
TI  - The short-term effect of stabilization-type splints on the local asymmetry of 
      masseter muscle sites.
PG  - 1139-43
AB  - Patients with temporomandibular disorders (TMD) may present with a cluster of 
      joint and muscle disorders characterized primarily by pain, joint sounds and 
      irregular or deviating jaw function. Maxillary stabilization-type splints 
      represent the best standard therapy, so the purpose of this study was to evaluate 
      changes in local cross-sectional dimensions (LCSD) of masseter muscle sites 
      associated with short-term application of 'splint therapy' using the diagnostic 
      approach of high-resolution gray-scale ultrasonography. The study included 29 
      patients who had signs and symptoms of temporomandibular disorders. 
      Ultrasonographic investigation was performed with a linear (B-scan) 7.5 MHz 
      small-part transducer to visualize the antero-superior, antero-inferior, 
      medio-superior, medio-inferior, postero-superior and postero-inferior sites of 
      the masseter muscle. To assess local muscle asymmetry patterns and to evaluate 
      the respective effect of occluding splints, the 'absolute asymmetry index (AAI)' 
      was used, with the mean maximum muscle diameter of the respective right and left 
      sides calculated from three consecutive measurements before and after splint 
      therapy. Comparing the pre-treatment with the 2-month follow-up values revealed a 
      significant decrease in the overall mean asymmetry indices at the anterior (P < 
      0.01), medial (P < 0.05) and posterior (P < 0.05) muscle sites. There was no 
      significant change in LCSDs at the various muscle sites (P > 0.05). The results 
      of this study suggest stabilization-type splints to be effective in reducing 
      local muscle asymmetries. Further studies are warranted to evaluate muscle-site 
      specific effects in patient and non-patient groups and to relate these effects to 
      pre-treatment variables like bite force, preferred chewing side, facial 
      morphology and occlusion.
FAU - Bertram, S
AU  - Bertram S
AD  - Department of Oral and Maxillo-Facial Surgery, University of Innsbruck, A-6020 
      Innsbruck, Austria.
FAU - Rudisch, A
AU  - Rudisch A
FAU - Bodner, G
AU  - Bodner G
FAU - Emshoff, R
AU  - Emshoff R
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - England
TA  - J Oral Rehabil
JT  - Journal of oral rehabilitation
JID - 0433604
SB  - IM
MH  - Adult
MH  - Aged
MH  - Analysis of Variance
MH  - Anatomy, Cross-Sectional
MH  - Bite Force
MH  - Cephalometry
MH  - Dental Occlusion
MH  - Face/anatomy & histology
MH  - Facial Asymmetry/diagnostic imaging/*therapy
MH  - Female
MH  - Follow-Up Studies
MH  - Humans
MH  - Male
MH  - Masseter Muscle/diagnostic imaging/*pathology
MH  - Mastication/physiology
MH  - Middle Aged
MH  - *Occlusal Splints
MH  - Single-Blind Method
MH  - Statistics as Topic
MH  - Temporomandibular Joint Disorders/therapy
MH  - Time Factors
MH  - Ultrasonography
EDAT- 2002/03/05 10:00
MHDA- 2002/06/01 10:01
CRDT- 2002/03/05 10:00
PHST- 2002/03/05 10:00 [pubmed]
PHST- 2002/06/01 10:01 [medline]
PHST- 2002/03/05 10:00 [entrez]
AID - 787 [pii]
AID - 10.1046/j.1365-2842.2001.00787.x [doi]
PST - ppublish
SO  - J Oral Rehabil. 2001 Dec;28(12):1139-43. doi: 10.1046/j.1365-2842.2001.00787.x.