Document Detail

Development of an experimental optoelectronic device to study the amplitude of mandibular movements.
MedLine Citation:
PMID:  18622485     Owner:  NLM     Status:  MEDLINE    
This study aimed to present a wireless mandibular motion tracking device and optoelectronic data acquisition system developed to analyze the real-time spatial motion of the entire mandible during mouth opening and closing with no restriction of any movement. The procedures were divided into three phases: confection of a kinematic arch, dynamic digital video image acquisition, and image processing and analysis by using graphic computation. Four sequences of jaw opening/closing movements were recorded in lateral view: two from the maximum intercuspation (MIC) and the other two from a forced mandibular retruded position. Jaw motion was recorded by a digital video camera and processed as spatial coordinates corresponding to the position variation of the markers in the kinematic arch. The results showed that the method was capable of recording and processing the dynamics of the mandibular movements during jaw opening/closing using pixel-magnitude points. The mandible showed points with less displacement located near the temporomandibular joint during the opening/closing movements from the mandibular retruded position. When the jaw movements were recorded from MIC, these points were located near the mandibular foramen.
Reinaldo Missaka; Lena Katekawa Adachi; Regina Tamaki; Rosemary Sadami Arai Shinkai; Tomie Nakakuki de Campos; Oswaldo Horikawa
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Brazilian oral research     Volume:  22     ISSN:  1807-3107     ISO Abbreviation:  -     Publication Date:    2008 Apr-Jun
Date Detail:
Created Date:  2008-07-14     Completed Date:  2009-07-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101307187     Medline TA:  Braz Oral Res     Country:  Brazil    
Other Details:
Languages:  eng     Pagination:  151-7     Citation Subset:  D; IM    
Department of Prosthodontics, School of Dentistry, University of São Paulo, SP, Brazil.
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MeSH Terms
Equipment Design
Image Interpretation, Computer-Assisted
Jaw / physiology*
Jaw Relation Record / instrumentation*
Mandible / physiology*
Orthodontic Appliances
Temporomandibular Joint / physiopathology*
Temporomandibular Joint Disorders / physiopathology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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