Document Detail


Measurement of lateral loads exerted on the maxillofacial region by habitual postures.
MedLine Citation:
PMID:  12174666     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Lateral loads exerted on the maxillofacial region by habitual postures and habits may cause lateral shift or deformity of the mandible. These loads were measured with a desktop dynamic-strain gauge (DPM-600, Kyowa Co.) connected to a small, highly sensitive pressure sensor (PSL-A type, Kyowa Co.), and recorded with an oscillographic recorder (RDM-100A, Kyowa Co.). Measurements were taken with a pressure sensor embedded in silicone impression material placed in a vinyl chloride resin bag, on which pressures were applied. A preliminary study was conducted to obtain a proportional constant and a conversion formula for load calculation. The subsequent main study included 20 healthy male volunteers for load measurement in 12 positions. The mean load exerted on the mandible was 43.7 N when the subjects lay face down and approximately 20 N when they sat resting the lateral part of the chin on the hand, indicating that these loads are greater than regular orthodontic forces.
Authors:
Masako Suzaki; Miwako Naruse; Nobuko Watanabe; Hideharu Yamaguchi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Bulletin of Tokyo Dental College     Volume:  43     ISSN:  0040-8891     ISO Abbreviation:  Bull. Tokyo Dent. Coll.     Publication Date:  2002 May 
Date Detail:
Created Date:  2002-08-14     Completed Date:  2002-11-12     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7505414     Medline TA:  Bull Tokyo Dent Coll     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  69-74     Citation Subset:  D    
Affiliation:
Suzaki Dental Clinic, 4-17-11 Nishifuna, Funabashi, Chiba 273-0031, Japan.
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MeSH Terms
Descriptor/Qualifier:
Adult
Arm / physiology
Cheek / physiology
Chin / anatomy & histology,  physiology
Face / anatomy & histology,  physiology*
Habits*
Hand / anatomy & histology
Humans
Male
Mandible / physiology
Oscillometry / instrumentation
Posture / physiology
Prone Position / physiology
Silicones
Transducers, Pressure
Weight-Bearing / physiology*
Zygoma / physiology
Chemical
Reg. No./Substance:
0/Silicones

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


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