The interrelationship of pulp and periodontal tissues

点击翻译按钮获取中文摘要

In order to study the interrelationship between the dental pulp and the periodontal tissues, acute response of the periodontal ligament (PL) blood flow to an application of histamine solution to the dental pulp and the gingival sulcus was investigated using laser Doppler velocimetry. The results were as follows:1. When histamine solution was directly applied to PL, PL blood flow increased immediately after its application. This increase disappeared after washing out the histamine.2. PL blood flow also increased after applying the histamine solution to the exposed pulp surface and the gingival sulcus, respectively. These increases did not disappear after washing out the histamine in the applied area.These results indicate that a measurement of tissue blood flow following an application of histamine solution as a tracer is methodologically useful to evaluate an inflammation spread between the tissues.