Functional maturation of periodontal mechanoreceptors during development in rats
| Autor: | Kazuo Toda, Kunimichi Soma, Fajar Hamonangan Nasution |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Molar
Male Aging Periodontal Ligament Mandibular Nerve Neural Conduction Action Potentials Mandible Biology Nerve Fibers Myelinated Developmental Neuroscience Physical Stimulation Occlusion medicine Periodontal fiber Animals Rats Wistar Anatomy Feeding Behavior Animals Suckling Rats Mechanoreceptor medicine.anatomical_structure All fiber Animals Newborn Sensory Thresholds Mastication Mechanoreceptors Developmental Biology |
| Zdroj: | Brain research. Developmental brain research. 139(2) |
| ISSN: | 0165-3806 |
| Popis: | The influence of development on periodontal mechanoreceptors (PMRs) was investigated in four groups of male Wistar albino rats aged 1, 3, 5 weeks and 6 months using an in vitro jaw-nerve preparation. The mean values of conduction velocities of the nerve innervating PMRs in 5-week and 6-month groups were significantly higher than those in the other two groups. All fiber types obtained in the 5-week and 6-month groups were Aβ. The mechanical thresholds of 5-week and 6-month groups were significantly higher than those of 1- and 3-week groups. These data suggest that the response properties of rat’s PMRs are matured by 5-week after birth, when functional molar occlusion and transition of dietary contents from liquid to hard-diet can be achieved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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