S-Space College of Dentistry/School of Dentistry (치과대학/치의학대학원) Dept. of Dentistry (치의학과) Journal Papers (저널논문_치의학과)
Evaluation of Electric Pulp Test (EPT) as a Tool for Measurement of Dentinal Hypersensitivity
상아질 지각과민 측정도구로서의 전기치수검사에 대한 평가
- Kim, Young Sung
- Issue Date
- 대한치주과학회지 2002;32:1-12
- In this study, 40 hypersensitive teeth of 19 patients were investigated. The
procedures performed were as follows: Before desensitization, EPT at occlusal
third of buccal surface was done for the evaluation of pulp vitality and the EPT
value was recorded for the reference value. And mechanical and thermal test was
executed for the test of hypersensitivity. If the tooth responded to the above tests,
we did EPT at the exposed surface, using toothpaste as a electrolite medium and
recorded the EPT value at patient's response. After the tests had been done,
desensitization procedures with Gluma® Desensitizer were performed according to
the manufacturer's instructions. After desensitization, the same tests except EPT
at occlusal third were repeated.
All the 40 teeth responded positive before desensitization and negative after
desensitization procedures. The EPT value at occlusal third ranged from 31 to 65
(48.9±7.2). Before desensitization 34 teeth responded at EPT value of 2 and the
remaining 6 teeth was in the range of 17 to 25. After desensitization all 40 teeth
responded from 12 to 27 (19.6±3.5). The 6 teeth responded at greater number than
2 before desensitization was in the range of 18 to 23.
Within the limitations of this study we can conclude that:
When a tooth with dentinal hypersensitivity responds to mechanical and thermal
stimulation, the tooth shows very low resistance to electricity at the exposed
surface while when a tooth is desensitized and doesn't show respond to
mechanical and thermal stimuli, the tooth shows increased level of resistance to
electric stimulation at the exposed surface.
EPT can be used for the diagnosis of dentinal hypersensitivity. Furthermore EPT
will be useful to evaluate the outcome of desensitization procedures. However,
EPT is not a valid tool for measuring dentinal hypersensitivity.