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International Journal of Applied Dental Sciences
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ISSN Print: 2394-7489, ISSN Online: 2394-7497
ICV 2019: 92.11

International Journal of Applied Dental Sciences

2022, Vol. 8 Issue 1, Part C

Evaluation of the pulpal peroxide levels in normal and restored teeth using spectrophotometer: An in vitro study

AUTHOR(S): Dr. Pragya Thakur, Dr. Uddipan Kumar and Dr. Harbinder Singh
ABSTRACT:Introduction: Hydrogen peroxide (30%) is a commonly used "in office" bleaching agent. Deleterious effects of hydrogen peroxide on the pulp have been observed.
Aim: The present study was conducted with the aim to evaluate the penetration of 30% hydrogen peroxide into the pulp chamber through intact teeth and through the surface of teeth, restored with either hybrid composite or Resin Modified Glass Ionomer Cement (RMGIC).
Materials and Methods: Sixty extracted human maxillary central incisors were selected and divided into six groups. Two groups were restored with hybrid composite resin and two with RMGIC, while two groups were left intact. The teeth with acetate buffer solution in their pulp cavity were then immersed in either 30% hydrogen peroxide or distilled water depending upon the group, for 60 minutes at 37 °C. Then horseradish peroxidase and leucocrystal violet were added to the acetate buffer solution present in the pulp chamber after it was transferred to a test tube and the optical density of the resultant blue solution obtained was measured spectrophotometrically.
Statistical Analysis: The data obtained were analyzed using one way ANOVA and Student’s t-test.
Results: The data obtained established that hydrogen peroxide penetrated into the pulp from the bleaching agent used. Hydrogen peroxide (30%) showed the highest pulpal peroxide level in teeth restored with RMGIC followed by teeth restored with hybrid composite resin and the least amount of penetration was observed in intact teeth.
Conclusion: The amount of peroxide penetration into the tooth is more through restored tooth than intact tooth and is also dependent on the type of restorative materials used.
Pages: 152-156  |  92 Views  8 Downloads
How to cite this article:
Dr. Pragya Thakur, Dr. Uddipan Kumar, Dr. Harbinder Singh. Evaluation of the pulpal peroxide levels in normal and restored teeth using spectrophotometer: An in vitro study. Int J Appl Dent Sci 2022;8(1):152-156. DOI: https://doi.org/10.22271/oral.2022.v8.i1c.1422
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International Journal of Applied Dental Sciences