JDR JDR Most Cited Articles
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Abstract Freely available
Right arrow Full Text
Right arrow Full Text (PDF)
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via ISI Web of Science (1)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Yabushita, T.
Right arrow Articles by Soma, K.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Yabushita, T.
Right arrow Articles by Soma, K.

Functional Adaptability of Jaw-muscle Spindles after Bite-raising

T. Yabushita1,2,*, J.L. Zeredo2, K. Fujita1,2, K. Toda2, and K. Soma1

1 Orthodontic Science, Department of Orofacial Development and Function, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan; and
2 Division of Integrative Sensory Physiology, Department of Developmental and Reconstructive Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8588, Japan


Figure 1
View larger version (14K):

[in a new window]
  		Figure 1. Schematic representation of the trigeminal mesencephalic nucleus drawn from coronal sections of the brainstem over a template form (Paxinos and Watson, 1998), –9.1 mm posterior to the bregma. An asterisk indicates the recording site. 4V, fourth ventricle; IRt, intermediate reticular nucleus; LC, locus coeruleus; Me5, trigeminal mesencephalic nucleus; Pr5, principal sensory trigeminal nucleus; py, pyramidal tract; sp5, spinal trigeminal tract; ts, tectospinal tract.

 

Figure 2
View larger version (41K):

[in a new window]
  		Figure 2. Examples of responses from single masseter muscle spindle units to ramp-and-hold stretch. (A) Typical responses from (a) Control group, (b) two-week iOVD group, and (c) eight-week iOVD group. (B) Ramp-and-hold stretch was applied with maximum opening distance of 7.0 mm; stimulus duration was 8.5 sec, divided into 4.5 sec and 4.0 sec for ramp-stretch and hold phases, respectively.

 

Figure 3
View larger version (12K):

[in a new window]
  		Figure 3. Dynamic index of normal and iOVD groups. (A) Control groups. (B) iOVD groups. A significantly lower dynamic index was observed after 2 wks of iOVD. Datapoints represent averaged data from 3 consecutive ramp-and-hold stretches in each unit. Error bars indicate SD; n means number of single afferent units; *P < 0.05 vs. one-day iOVD, and #P < 0.05 vs. the respective Control subgroup in repeated-measures ANOVA followed by Scheffé’s post hoc test. "n" refers to the number of units at each time period. Imp/s, impulses per sec.

 

Figure 4
View larger version (13K):

[in a new window]
  		Figure 4. Static index of normal and iOVD groups. (A) Control groups. (B) iOVD groups. A significantly lower static index was observed after 2 and 4 wks of iOVD. Datapoints represent averaged data from 3 consecutive ramp-and-hold stretches in each unit. Error bars indicate SD; n means number of single afferent units; *P < 0.05 vs. one-day iOVD, and #P < 0.05 vs. the respective Control subgroup in repeated-measures ANOVA, followed by Scheffé’s post hoc test. "n" refers to the number of units at each time period. Imp/s, impulses per sec.

 




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
IADR Journals Advances in Dental Research ®
Journal of Dental Research ® Critical Reviews (1990-2004)
Copyright © 2006 Institutional Access Guidelines