Measurement of Tissue Pressure in the Dental Pulp, using a Servo-Controlled Counterpressure System, of the Rat Incisor

Koichiro Komatsu

doi:10.26717/bjstr.2019.24.003991

Abstract

Several earlier studies have suggested that the positions of teeth in experimental animals and humans may be influenced by vascular forces, probably due to changes in the regional blood flow...

Highlights

Several earlier studies have suggested that the positions of teeth in experimental animals and humans may be influenced by vascular forces, probably due to changes in the regional blood flow, vascular pressure, or pulsatile forces in and around the teeth [1,2,3]
We applied a servo-controlled counterpressure system to measure the tissue pressure in the rat incisor combined with measurement of the regional blood flow and axial tooth movement following injection of vasopressin under anesthesia
The changes in the axial tooth movement were intimately related to the changes in the tissue pressure and blood flow in the dental pulp

Summary

Introduction

Several earlier studies have suggested that the positions of teeth in experimental animals and humans may be influenced by vascular forces, probably due to changes in the regional blood flow, vascular pressure, or pulsatile forces in and around the teeth [1,2,3]. Since the dental pulp resides in a low-compliance environment, an increase in blood flow, or precapillary vasodilatation, and a decrease in blood flow, or vasoconstriction, will be accompanied by a rise and a reduction in tissue pressure, respectively [7]. These increases and decrease of the regional blood flow within the tooth socket might have caused an increase and a decrease of the tissue pressure, resulting in the extrusive and intrusive movements of the rat incisor, respectively [4,5,6]. The aim of the present study was to apply a servo-controlled counterpressure system, a reliable method for measurement of tissue pressure, to measure the tissue pressure in the rat incisor combined with measurement of the regional blood flow and axial tooth movement following injection of vasopressin under anesthesia

Methods

Results

Conclusion