| Effects of occlusal contact and its area on gravity fluctuation. | |
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MedLine Citation:
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PMID: 20050750 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To examine changes in gravity fluctuation caused by experimentally altering the area of occlusal contact. MATERIALS AND METHODS: Subjects consisted of 15 adult Japanese males with normal stomatognathic function, no missing teeth except for the third molars, and equivalent occlusal contact in the anterior and bilateral posterior regions. Silicon biteplates fabricated for each subject to evaluate gravity fluctuation in relation to changes in occlusal contact area were as follows: RP(-)-OC(+) (entire occlusal surface covered in centric occlusion); RP(+)-OC(+) (entire occlusal surface covered with bite slightly raised); Ant or Pos/RP(+)-OC(+) (anterior or posterior region selectively covered); and RP(+)-OC(-) (only retromolar pads covered, no occlusal coverage). RESULTS: No significant differences in gravity fluctuation were noted between subjects wearing biteplates covering the entire occlusal surface. Subjects wearing biteplates with no occlusal contact showed greater gravity fluctuation than those with occlusal contact. In addition, gravity fluctuation for the Ant/RP(+)-OC(+) group (no occlusal contact in the posterior region) was greater than for RP(+)-OC(+) and Pos/RP(+)-OC(+). However, groups with unilateral occlusal contact in the posterior region exhibited large right and left sway amplitude. CONCLUSIONS: These results suggest that occlusal contact, especially posterior occlusal contact, affects gravity fluctuation, and that appropriate occlusion attained by maintaining even occlusal contact in the posterior region is crucial for gravity fluctuation. |
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Authors:
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Emi Oie; Mariko Horiuchi; Kunimichi Soma |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Angle orthodontist Volume: 80 ISSN: 0003-3219 ISO Abbreviation: Angle Orthod Publication Date: 2010 May |
Date Detail:
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Created Date: 2010-01-06 Completed Date: 2010-06-10 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0370550 Medline TA: Angle Orthod Country: United States |
Other Details:
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Languages: eng Pagination: 540-6 Citation Subset: D; IM |
Affiliation:
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Department of Orofacial Development and Function, Tokyo Medical and Dental University, Japan. ohyeah.orts@tmd.ac.jp |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Bite Force Dental Impression Materials / chemistry Dental Occlusion* Dental Occlusion, Centric Humans Male Malocclusion / physiopathology Occlusal Splints Orthodontic Appliance Design Polyvinyls / chemistry Postural Balance / physiology* Siloxanes / chemistry Tooth / physiology* Vertical Dimension |
| Chemical | |
Reg. No./Substance:
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0/Dental Impression Materials; 0/Polyvinyls; 0/Siloxanes; 0/vinyl polysiloxane |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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