A new method for evaluating the threshold of periodontal ligament mechanoreceptor by slow speed mechanical stimulation.
J Periodontal Res
; 38(5): 482-7, 2003 Oct.
Article
em En
| MEDLINE
| ID: mdl-12941072
ABSTRACT
OBJECTIVES:
This study aimed to establish a reliable method for detecting the threshold for perception of force applied to tooth and to report the basic properties of force threshold in the normal dentition subjects.BACKGROUND:
The perception of mechanical stimulation exerted to tooth is formed by input from periodontal ligament mechanoreceptors and intradental mechanoreceptors. Periodontal ligament mechanoreceptors respond to a wide range speed of stimulus, whereas intradental mechanoreceptors are activated only by a rapid stimulation. Reliable properties of perception have not been reported because of the difficulties to regulate velocity and degree of the stimulus.METHODS:
Eighteen healthy subjects were observed in this study (mean age 27.2 +/- 5.7 years). A loading device to generate slow speed loading was fabricated and measured as follows (i) the fluctuation of the force threshold within a day, (ii) day-to-day fluctuation, (iii) changes in the force threshold by a transient mechanical loading.RESULTS:
In the normal dentition, it was observed that the fluctuation within a day and day to day of the pressure sense showed no significant differences; however, a transient mechanical loading caused the sensitivity of the periodontal ligament to decrease significantly.CONCLUSIONS:
The device examining the force threshold resulted from periodontal ligament mechanoreceptors was useful in evaluating the sensitivity of the periodontal ligament.
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Base de dados:
MEDLINE
Assunto principal:
Ligamento Periodontal
/
Estimulação Física
/
Análise do Estresse Dentário
/
Mecanorreceptores
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
J Periodontal Res
Ano de publicação:
2003
Tipo de documento:
Article
País de afiliação:
Japão