PMID- 33678437
OWN - NLM
STAT- MEDLINE
DCOM- 20221206
LR  - 20221206
IS  - 1097-6841 (Electronic)
IS  - 0022-3913 (Linking)
VI  - 128
IP  - 5
DP  - 2022 Nov
TI  - Effect of short-term increase in occlusal vertical dimension on masticatory 
      muscle electrical activities and pressure-to-pain threshold: A crossover clinical 
      study.
PG  - 970-976
LID - S0022-3913(21)00070-6 [pii]
LID - 10.1016/j.prosdent.2021.01.023 [doi]
AB  - STATEMENT OF PROBLEM: Increasing the occlusal vertical dimension (OVD) is a 
      common procedure in clinical practice. However, few studies have assessed the 
      short-term influence of an increased OVD on the masticatory muscles. PURPOSE: The 
      purpose of this crossover clinical study was to investigate the effect of 
      increased OVD on the electrical activity of masticatory muscles and the 
      pressure-to-pain threshold (PPT) in asymptomatic participants. MATERIAL AND 
      METHODS: Twenty asymptomatic participants (22.7 +/-2.39 years of age; 10 men, 10 
      women) were submitted to an increase in OVD by using interocclusal devices of 
      different thicknesses (3- and 6-mm) for 24 hours. Masticatory muscle activity was 
      assessed with electromyography (EMG), expressed in microvolts (muV), while the 
      participants masticated 2 pieces of latex of different consistency (latex S and 
      H) with and without the device. The PPT was measured with a digital algometer 
      before and after the mastication. The results were assessed by using analysis of 
      variance (ANOVA) and the Tukey honestly significant difference (HSD) test 
      (alpha=.05). RESULTS: The change of OVD did not significantly affect the electrical 
      activity of the muscles. The latex of hard consistency (latex H) showed higher 
      electrical activity values than the soft texture (latex S). For the working side 
      anterior temporal muscle, a change in the PPT was detected on the day the 
      6-mm-device was inserted, but for the other muscles, device thickness and latex 
      mastication did not change the PPT. CONCLUSIONS: For a short time, an increase in 
      occlusal vertical dimension did not affect the electrical activity in the 
      masticatory muscles or pressure-to-pain threshold in asymptomatic participants.
CI  - Copyright (c) 2021 Editorial Council for the Journal of Prosthetic Dentistry. 
      Published by Elsevier Inc. All rights reserved.
FAU - Ribeiro, Adriana Barbosa
AU  - Ribeiro AB
AD  - Collaborator Professor, Department of Dental Materials and Prosthodontics, School 
      of Dentistry of Ribeirao Preto, University of Sao Paulo (USP), Ribeirao Preto, 
      Brazil. Electronic address: driribeiro@usp.br.
FAU - Pita, Murillo Sucena
AU  - Pita MS
AD  - Post-doctoral Research Fellow, Department of Dental Materials and Prosthodontics, 
      School of Dentistry of Ribeirao Preto, University of Sao Paulo (USP), Ribeirao 
      Preto, Brazil.
FAU - Ribeiro, Aline Barbosa
AU  - Ribeiro AB
AD  - Post-doctoral Research Fellow, Department of Physiology, Ribeirao Preto Medical 
      School, University of Sao Paulo (USP), Ribeirao Preto, Brazil.
FAU - Garcia, Alicio Rosalino
AU  - Garcia AR
AD  - Associate Professor, Department of Dental Materials and Prosthodontics, School of 
      Dentistry of Aracatuba, Sao Paulo State University - UNESP, Aracatuba, SP, 
      Brazil.
FAU - Junqueira Zuim, Paulo Renato
AU  - Junqueira Zuim PR
AD  - Associate Professor, Department of Dental Materials and Prosthodontics, School of 
      Dentistry of Aracatuba, Sao Paulo State University - UNESP, Aracatuba, SP, 
      Brazil.
LA  - eng
PT  - Journal Article
DEP - 20210305
PL  - United States
TA  - J Prosthet Dent
JT  - The Journal of prosthetic dentistry
JID - 0376364
RN  - 0 (Latex)
SB  - IM
MH  - Male
MH  - Female
MH  - Humans
MH  - Vertical Dimension
MH  - *Pain Threshold
MH  - *Latex
MH  - Masticatory Muscles/physiology
MH  - Masseter Muscle/physiology
MH  - Electromyography
MH  - Mastication/physiology
EDAT- 2021/03/09 06:00
MHDA- 2022/12/07 06:00
CRDT- 2021/03/08 05:36
PHST- 2019/10/09 00:00 [received]
PHST- 2021/01/29 00:00 [revised]
PHST- 2021/01/30 00:00 [accepted]
PHST- 2021/03/09 06:00 [pubmed]
PHST- 2022/12/07 06:00 [medline]
PHST- 2021/03/08 05:36 [entrez]
AID - S0022-3913(21)00070-6 [pii]
AID - 10.1016/j.prosdent.2021.01.023 [doi]
PST - ppublish
SO  - J Prosthet Dent. 2022 Nov;128(5):970-976. doi: 10.1016/j.prosdent.2021.01.023. 
      Epub 2021 Mar 5.