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Related Experiment Videos

Surface roughness of various packable composites.

Timothy M Ryba1, William J Dunn, David F Murchison

  • 1Dunn Dental Clinic, Department of General Dentistry, Lackland AFB, Texas, USA.

Operative Dentistry
|May 23, 2002
PubMed
Summary

Polishing packable composite dental restorations is challenging. Aluminum oxide disks showed a trend towards smoother surfaces than rubber polishers across most tested composite materials.

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Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering

Background:

  • Packable composite restorations are increasingly used for posterior teeth.
  • Achieving a smooth surface finish on composites is difficult, impacting aesthetics and longevity.
  • Surface roughness can influence plaque accumulation and wear resistance.

Purpose of the Study:

  • To compare the surface roughness of different packable composite materials.
  • To evaluate the effectiveness of two polishing systems (aluminum oxide disks vs. rubber polishers) on composite surface finish.

Main Methods:

  • Six composite materials (one hybrid, five packable) were tested.
  • Specimens were polished using either aluminum oxide disks or a rubber polishing system.
  • Surface roughness was quantified using surface profilometry.

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Main Results:

  • No statistically significant difference in surface roughness was found between the polishing techniques.
  • A trend indicated that aluminum oxide disks resulted in smoother surfaces for five of the six composite materials tested.
  • The polishing technique did not significantly affect the surface roughness across all materials.

Conclusions:

  • While not statistically significant, aluminum oxide disks demonstrated a tendency to produce smoother surfaces on packable composites compared to rubber polishers.
  • Further research may be needed to optimize polishing protocols for achieving superior surface smoothness with composite restorations.