Loescher A R, Robinson P P
Department of Oral and Maxillofacial Surgery, University of Sheffield School of Clinical Dentistry, Charles Clifford Dental Hospital, U.K.
Arch Oral Biol. 1991;36(1):33-40. doi: 10.1016/0003-9969(91)90051-u.
These characteristics were investigated 12 weeks and one year after tooth reimplantation. Electrophysiological recordings were made from single mechanosensitive units dissected from the inferior alveolar nerve and each unit was characterized by applying forces to the crown of the tooth. The characteristics were compared with those of receptors innervating normal teeth. The periodontal mechanoreceptors supplying teeth reimplanted 12 weeks earlier responded to applied forces over a narrower range of directions, had higher force thresholds, lower discharge frequencies and adapted more rapidly than controls. One year after reimplantation their characteristics were nearer to normal but they remained significantly different from those of control units. It seems likely that the altered receptor characteristics could have resulted from a combination of changes in tooth mobility, disorganisation of the collagen matrix and direct injury to the nerve terminals.
在牙齿再植后12周和1年对这些特征进行了研究。从下颌神经中分离出单个机械敏感单元进行电生理记录，通过对牙冠施加力来对每个单元进行特征描述。将这些特征与支配正常牙齿的感受器的特征进行比较。为再植12周前的牙齿提供营养的牙周机械感受器，在较窄的方向范围内对施加的力做出反应，具有更高的力阈值、更低的放电频率，并且比对照组更快地适应。再植一年后，它们的特征更接近正常，但仍与对照单元的特征有显著差异。改变的感受器特征可能是由牙齿移动性的变化、胶原基质的紊乱以及神经末梢的直接损伤共同导致的。
