7
Authors
9
References
2025
Year Published
Abstract
📥 Received: 12 Apr 2025
✅ Accepted: 05 Jun 2025
📤 Published: 30 Sep 2025
Background
Regarding the optimal time to etch primary dentin and how it affects the bond strength of adhesive restorative materials, there are contradictory findings.
Aim of the Study
Evaluate the impact of various etching times on the primary dentin's tensile bond strength.
Materials & Methods
Human primary molars that had been extracted or exfoliated and free of caries were split into buccal and lingual/palatal halves. Each sample was mounted on a 1 × 1 inch acrylic block. Samples were randomly assigned into 4 groups, each of which had 10 samples. 10% phosphoric acid was used to etch groups 1, 2, 3, and 4 for seven, ten, fifteen, and twenty seconds, respectively. After applying the bonding agent, a composite resin rod was constructed on the demarcated, etched area of the tooth. Tensile bond strength was assessed using a universal testing machine. For intergroup comparison, an ANOVA test was performed. p value < 0.05 was set as statistically significant.
Results
Group 1, with an etching time of 7 seconds, showed the highest tensile strength, followed by Group 2 of 10 seconds, Group 3 of 15 seconds, and Group 4 of 20 seconds, which was statistically significant with p value 0.01.
Conclusion
Reducing the acid etching time improves the primary dentin's tensile strength. Because of their limited cooperation, children benefit greatly from shorter etching time.
Keywords:
Tensile bond strength
Etching
Primary tooth
How to Cite
R A, Chamarthi VR, Kalaivanan D, Krishnamoorthy S, Saleem S, R SPAK, Kothimbakkam SSK. Effect of Varying Etching Times on the Tensile Bond Strength of Primary Tooth: An In Vitro Study. J Indian Dent Assoc Madras. 2025;12(3). DOI: 10.37841/jidam.2025.v12.i3.003
(Aswathi R, Vishnu Rekha Chamarthi, Dhanraj Kalaivanan, Santham Krishnamoorthy, Sumaiyya Saleem, Santhosh Priya A K R, Sai Sarath Kumar Kothimbakkam). (2025). Effect of Varying Etching Times on the Tensile Bond Strength of Primary Tooth: An In Vitro Study. Journal of Indian Dental Association Madras, 12(3). https://doi.org/10.37841/jidam.2025.v12.i3.003
Aswathi R, et al. "Effect of Varying Etching Times on the Tensile Bond Strength of Primary Tooth: An In Vitro Study." Journal of Indian Dental Association Madras, vol. 12, no. 3, 2025. DOI: 10.37841/jidam.2025.v12.i3.003.
R A, Chamarthi VR, Kalaivanan D, Krishnamoorthy S, Saleem S, R SPAK, Kothimbakkam SSK. Effect of Varying Etching Times on the Tensile Bond Strength of Primary Tooth: An In Vitro Study. J Indian Dent Assoc Madras. 2025;12(3). doi:10.37841/jidam.2025.v12.i3.003
Aswathi R, Vishnu Rekha Chamarthi, Dhanraj Kalaivanan, Santham Krishnamoorthy, Sumaiyya Saleem, Santhosh Priya A K R, Sai Sarath Kumar Kothimbakkam. "Effect of Varying Etching Times on the Tensile Bond Strength of Primary Tooth: An In Vitro Study." Journal of Indian Dental Association Madras 12, no. 3 (2025). https://doi.org/10.37841/jidam.2025.v12.i3.003.
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