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May 6, 2026Journal of Interdisciplinary Dentistry

Effect of Repeated Preheating on the Microhardness of Nanohybrid Resin Composite under Simulated Stress: An In vitro Study

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Authors

SVSayesh VemuriNNN S R L Sri Navya NanduriRBRam Chowdary Basam

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Overview

In vitro study shows preheating resin composites maintains mechanical strength under oral stress, suggesting durability.

Key Points

  • Evaluate the effect of repeated preheating on the microhardness of nanohybrid composites under simulated oral stresses.
  • In vitro study with 60 extracted human premolars
  • Groups underwent varying preheating cycles before placement of resin composite
  • Samples subjected to cyclic loading and thermocycling tests
  • Microhardness measured using Vickers microhardness test
  • Data analyzed using Kruskal-Wallis and Mann-Whitney U-tests
  • No significant difference in microhardness observed among groups
  • Noticeable reduction in microhardness after 30 preheating cycles
  • Resin composites showed durability under simulated oral conditions

Cite This Study

Vemuri et al. (2026) studied this question.

synapsesocial.com/papers/69faa1eb04f884e66b532b4ehttps://doi.org/10.4103/jid.jid_268_24
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Also Consider

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