咀嚼運動にかかわる感覚神経のはたらきを探る

• 赤坂 徹

  神奈川歯科大学生体管理医学講座障害者歯科学分野

• 時安 喜彦

  井荻歯科医院

• 小松 太一

  神奈川歯科大学成長発達歯科学講座小児歯科学分野

• 渡部 茂

  明海大学歯学部小児歯科学講座

• 宮城 敦

  神奈川歯科大学生体管理医学講座障害者歯科学分野

書誌事項

タイトル別名

• Investigating the Role of a Sensory Nerve that is Associated with Masticatory Motion
• Analyzing the Trigeminal Mesencephalic Nucleus Neurons that are Projections of Periodontal Pressoreceptors
• 歯根膜感覚支配の三叉神経中脳路核ニューロン細胞体についての検討

抄録

Although numerous studies have shown that oral disease, such as temporomandibular disease and bruxism are associated with mastication and jaw-closing motion, the mechanism has not yet been fully elucidated.<BR>In this study, in order to elucidate the mechanism of the oral conditions and the chewing motionmechanism, we analyzed the trigeminal mesencephalic nucleus neurons that are projections of periodontal pressoreceptors from periodontal ligaments by using retrograde fluorescence staining.<BR>The fluoresence staining of the originated neurons of the trigeminal mesencephalic nucleus was observed and the results were obtained as follows:<BR>1. In retrograde labelling with 2% dextran, tetramethyl rhodamine, the labelling neuron was not recognized in any of the groups after administration of 2% dextran, tetramethyl rhodamine. In retrograde labelling with 10% dextran, tetramethyl rhodamine, only one retrograde labelling neuron of one rat was recognized out of 12 rats after administration of 10% dextran, tetramethyl rhodamine.<BR>2. In retrograde labelling with 2% dextran, rhodamine B, the retrograde labelling neuron was not recognized in any interval after administration of 2% dextran, rhodamine B.<BR>3. In retrograde labelling with 10% dextran, rhodamine B, retrograde labelling neuron was not recognized 1 day after administration, although the sum of two labellinng neurons obtained from each one of two rats were recognized out of 12 rats 2 days after administration. The sum of six labelling neurons obtained from 4 rats was recognized out of 12 rats 4 days after administration.<BR>4. We carried out retrograde labelling with 20% dextran, rhodamine B. As a result, the sum of two labelling neurons obtaining from each one of two rats, were recognized out of 12 rats 4 days after administration.<BR>These results have shown that the injection into periodontal ligament is able to label the trigeminal mesencephalic nucleus neurons that are projections of periodontal pressoreceptors in the mandibular molar retrogradely.<BR>The number of retrograde labelling neurons was small however and the probability of labelling neurons was low, so that further study is needed to analyze the procedure of retrograde labelling and injection area of the neuronal tracer.

収録刊行物

• The Japanese Journal of Pediatric Dentistry

  The Japanese Journal of Pediatric Dentistry 44 (4), 518-525, 2006

  The Japanese Society of Pediatric Dentistry

キーワード

• 三叉神経中脳路核ニューロン
• 逆行性染色
• 支配神経

詳細情報

• CRID: 1390282679661944576
• NII論文ID: 130004635133
• DOI: 10.11411/jspd1963.44.4_518
• ISSN: 05831199
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可