Document Detail

Effect on the dentofacial complex of Macaca irus of functional tongue forces imparted on a palatal bar.
MedLine Citation:
PMID:  8263656     Owner:  NLM     Status:  MEDLINE    
I determined the effect tongue forces imparted on a palatal bar has on the growth and development of the dentofacial complex of the Macaca irus. Ten female Macaca irus monkeys with mixed dentition were used in this experiment. The animals were divided into four groups, two animals were treated for 30 days, two for 90 days, and four for 180 days, with the remaining two animals serving as controls. The following results were obtained. 1. There was disocclusion on the maxillary and mandibular first molars. 2. Elongation of the mandibular first molars resulted from intrusion of the maxillary first molars. 3. The maxillary complex displayed a positional change with slight clockwise rotation. 4. Growth of the frontozygomatic site in the anteroinferior direction was inhibited. 5. There was no anterosuperior mandibular growth. 6. Changes in the maxillary suture and positioning of the teeth were mainly due to the effects of the tongue function imparted on the palatal bar. With enough control of the vertical growth of the maxilla can be validated. This is one of many methods of treating Class II malocclusion.
M Hata
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of Osaka Dental University     Volume:  27     ISSN:  0475-2058     ISO Abbreviation:  J Osaka Dent Univ     Publication Date:  1993 Apr 
Date Detail:
Created Date:  1994-01-27     Completed Date:  1994-01-27     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  7507225     Medline TA:  J Osaka Dent Univ     Country:  JAPAN    
Other Details:
Languages:  eng     Pagination:  51-66     Citation Subset:  D    
Department of Orthodontics, Osaka Dental University, Japan.
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MeSH Terms
Malocclusion, Angle Class II / therapy*
Maxillofacial Development / physiology*
Orthodontic Appliances*
Vertical Dimension

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