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Related Concept Videos

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The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
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Related Experiment Video

Updated: Jun 29, 2025

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
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Progressive Tooth Wear Against Resin-Based Restorative Composites.

W Bettker1, A D Nogueira1, E R X Marcolin1

  • 1University of Passo Fundo, Passo Fundo, RS, 99052-900, Brazil.

The European Journal of Prosthodontics and Restorative Dentistry
|April 9, 2024
PubMed
Summary

Bulk-fill resin composites (BF) showed less tooth wear than conventional resin composites (RC) and resin nano ceramics (RN). BF also demonstrated superior wear resistance, indicating favorable clinical performance for dental restorations.

Keywords:
Dental Restoration WearResin CompositeTooth Wear

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Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering
  • Restorative Dentistry

Background:

  • Resin-based composites are widely used in dental restorations.
  • Material properties can influence tooth wear and clinical outcomes.
  • Understanding wear behavior is crucial for selecting appropriate restorative materials.

Purpose of the Study:

  • To compare the tooth wear behavior of a bulk-fill restorative (BF) against a conventional resin composite (RC) and a resin nano ceramic (RN).
  • To evaluate the wear resistance and microhardness of these restorative materials.
  • To assess the impact of different materials on human tooth structure during simulated chewing.

Main Methods:

  • Occlusal wear testing was performed on BF, RC, and RN specimens using a chewing simulator.
  • Human premolar cusps served as antagonists against the tested materials.
  • Wear volume was quantified using micro-CT and laser scanning, while wear patterns were examined with SEM.
  • Knoop microhardness testing assessed material softening after ethanol immersion.

Main Results:

  • Bulk-fill resin composites (BF) exhibited significantly less tooth wear compared to resin nano ceramics (RN) and conventional resin composites (RC).
  • BF demonstrated superior wear resistance, with lower volume loss than both RC and RN.
  • Material wear and volume loss increased with the number of testing cycles (up to 500,000 cycles).

Conclusions:

  • Bulk-fill resin composites induce less tooth volume loss and possess greater wear resistance than conventional resin composites and resin nano ceramics.
  • All tested materials showed mild tooth wear patterns and damage progression.
  • Bulk-fill resin composites offer an efficient restorative technique with low wear susceptibility and reduced tooth wear potential.