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Effects of conducting media and gender on an electric pulp test
E Chunhacheevachaloke1, O Ajcharanukul2
1Department of Pediatric and Preventive Dentistry, Srinakharinwirot University, Bangkok, Thailand.
Aims:
(1) To determine the pulpal sensory thresholds in human teeth obtained from using various EPT conducting media and (2) to determine whether there are gender differences.
Methodology:
One intact maxillary central incisor was randomly selected from each of 40 participants (20 male, 20 female) aged 19-24 year. A constant-current electrical stimulator (University of Bristol, UK) was used to apply electrical stimuli with different conducting media at intervals of 1 min on the middle of the crown to evaluate the sensory threshold of the tooth. The tip of the electrode was coated with a thin layer of test media. The sensory thresholds and the pain scores were measured simultaneously after applying stimuli twice a second and gradually increasing the intensity until felt by the participants. Test media included water-based gels (K-Y UltraGel; Xylocaine 2% Jelly, electrode gel, fluoride gel) and toothpastes (Colgate Total; Sensodyne Repair & Protect; Dentiste' Plus White; Sparkle White). The sensory threshold data were evaluated using two-way anova followed by the Tukey test.
Results:
Xylocaine 2% Jelly and fluoride gel evoked significantly lower threshold values when compared with Sensodyne Repair & Protect (P < 0.001). With all test media, the mean sensory threshold from the female group was significantly lower than that of the male group (P < 0.001).
Conclusion:
The sensory thresholds to electrical stimuli in human teeth was influenced by the type of conducting media and gender.
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