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Related Experiment Videos

Three composite finishing systems: a multisite in vitro evaluation.

S R Jefferies1, W W Barkmeier, A J Gwinnett

  • 1L.D. Caulk Division/Dentsply International, Milford, DE 19963.

Journal of Esthetic Dentistry
|November 1, 1992
PubMed
Summary

Choosing the right finishing and polishing systems is key for composite resin restorations. This study found significant differences in surface roughness, with one hybrid composite showing superior smoothness compared to a microfill composite.

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Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering

Background:

  • Composite resin restorations require proper finishing and polishing for aesthetic and functional longevity.
  • The selection of finishing and polishing devices significantly impacts the surface characteristics of restorative materials.

Purpose of the Study:

  • To compare the effectiveness of three distinct finishing and polishing systems on composite resin surfaces.
  • To evaluate the surface roughness of different composite resins when prepared with manufacturer-recommended systems.

Main Methods:

  • Surface roughness analysis using profilometry was performed at two independent laboratories.
  • Three specific finishing and polishing systems were tested on composite restorative materials.
  • Statistical analysis was conducted to determine significant differences in mean surface roughness.

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Main Results:

  • Statistically significant differences in mean surface roughness were observed among various finishing system/composite resin combinations.
  • A hybrid composite resin, when finished and polished with its dedicated system, yielded a significantly smoother surface than a microfill composite prepared with its corresponding abrasive disc system.
  • These findings were consistent and corroborated across both laboratory sites and methodologies.

Conclusions:

  • The choice of finishing and polishing system has a measurable impact on the surface smoothness of composite resins.
  • Hybrid composite resins may offer superior surface smoothness outcomes when paired with appropriate finishing protocols compared to certain other composite types.
  • Standardized testing across multiple sites validates the observed differences in surface roughness achieved by different finishing systems.