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HOME > Restor Dent Endod > Volume 29(3); 2004 > Article
Original Article Measurement of the excessive stimulus time after the sensory threshold level during electric pulp testing
Ki-Chang Nam1, Seon-Hui Ahn1, Soo-Chan Kim1, Deok-Won Kim1, Seung-Jong Lee2
2004;29(3):-232.
DOI: https://doi.org/10.5395/JKACD.2004.29.3.226
Published online: May 31, 2004

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Corresponding author: Seung-Jong Lee. Department of Conservative Dentistry, College of Dentistry, Yonsei University, 134 Shinchon-Dong, Seodaemoon Gu, Seoul, Korea, 120-752. Tel: 82-2-361-8700, Fax: 82-2-313-7575, sjlee@yumc.yonsei.ac.kr

Copyright © 2004 Korean Academy of Conservative Dentistry

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  • Use of electric pulp testing elicits painful response in vital teeth. In this study, we examined the excessive time from pain feeling to stimulation disconnection in clinical situation. D626D (Parkell Inc., USA.) scan type electric pulp tester was used in total of 23 young healthy individuals. Each of the right central incisors and first premolars were used as testing teeth. Stimulation disconnection was achieved by EMG in anterior belly of digastric muscle, finger span, and voice and the excessive stimulation time over the sensory threshold was recorded. As a result, we found that the short responses before the stimulation disconnection appeared following order; EMG, finger span, and voice. The EMG disconnection is suggested to be used to reduce the excessive stimulus time in electric pulp testing.
  • Keywords: Tooth; Pulp test; Electric pulp tester; Pulp vitality; Pain response; EMG (electromyograph); Stimulation time
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Figure 1
Conventional pulp vitality testing using electric pulp tester.
jkacd-29-226-g001.jpg
Figure 2
Electrode position to measure the digastric muscle EMG.
jkacd-29-226-g002.jpg
Figure 3
Flexible band sensor for measuring the finger span.
jkacd-29-226-g003.jpg
Figure 4
Measurement of pain responses during electric pulp testing.
jkacd-29-226-g004.jpg
Figure 5
Record of electric pulp testing level, EMG, finger span, and voice during electric pulp testing (① : time of electric pulp testing, ②, ③, ④ time delay between showing EMG, finger span, and voice response and stimulation stop, respectively).
jkacd-29-226-g005.jpg
Figure 6
Time delay between the examiner and examinee (central incisor, EMG1)
jkacd-29-226-g006.jpg
Figure 7
Time delay between the examiner and examinee (premolar, EMG1)
jkacd-29-226-g007.jpg
Figure 8
Time delay between the examiner and examinee (central incisor, EMG2)
jkacd-29-226-g008.jpg
Figure 9
Time delay between the examiner and examinee (premolar, EMG2)
jkacd-29-226-g009.jpg
Table 1
Time delay between EMG, finger span, and voice response and stimulation disconnection, respectively (EMG 1)
jkacd-29-226-i001.jpg
Table 2
Time delay between showing EMG, finger span, and voice response and stimulation stop, respectively (EMG 2)
jkacd-29-226-i002.jpg
Table 3
Maximum power value of EMG in digastric muscle as the electrode position by electric pulp testing
jkacd-29-226-i003.jpg

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    • Evaluation of the change of lower lip sensation after inferior alveolar nerve block by using the electric pulp tester
      Myong-Suk Ku, Jin Wook Kim, Young Hoon Jeon, Tae Geon Kwon, Sang Han Lee
      Journal of the Korean Association of Oral and Maxillofacial Surgeons.2011; 37(6): 464.     CrossRef

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      Measurement of the excessive stimulus time after the sensory threshold level during electric pulp testing
      J Korean Acad Conserv Dent. 2004;29(3):226-232.   Published online May 31, 2004
      DOI: https://doi.org/10.5395/JKACD.2004.29.3.226
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    Measurement of the excessive stimulus time after the sensory threshold level during electric pulp testing
    Image Image Image Image Image Image Image Image Image
    Figure 1 Conventional pulp vitality testing using electric pulp tester.
    Figure 2 Electrode position to measure the digastric muscle EMG.
    Figure 3 Flexible band sensor for measuring the finger span.
    Figure 4 Measurement of pain responses during electric pulp testing.
    Figure 5 Record of electric pulp testing level, EMG, finger span, and voice during electric pulp testing (① : time of electric pulp testing, ②, ③, ④ time delay between showing EMG, finger span, and voice response and stimulation stop, respectively).
    Figure 6 Time delay between the examiner and examinee (central incisor, EMG1)
    Figure 7 Time delay between the examiner and examinee (premolar, EMG1)
    Figure 8 Time delay between the examiner and examinee (central incisor, EMG2)
    Figure 9 Time delay between the examiner and examinee (premolar, EMG2)

    Figure 1

    Figure 2

    Figure 3

    Figure 4

    Figure 5

    Figure 6

    Figure 7

    Figure 8

    Figure 9

    Measurement of the excessive stimulus time after the sensory threshold level during electric pulp testing

    Time delay between EMG, finger span, and voice response and stimulation disconnection, respectively (EMG 1)

    Time delay between showing EMG, finger span, and voice response and stimulation stop, respectively (EMG 2)

    Maximum power value of EMG in digastric muscle as the electrode position by electric pulp testing
    Table 1 Time delay between EMG, finger span, and voice response and stimulation disconnection, respectively (EMG 1)

    Table 2 Time delay between showing EMG, finger span, and voice response and stimulation stop, respectively (EMG 2)

    Table 3 Maximum power value of EMG in digastric muscle as the electrode position by electric pulp testing

    Table 1

    Table 2

    Table 3

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