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Related Experiment Videos

Roughness of denture materials: a comparative study.

A J Zissis1, G L Polyzois, S A Yannikakis

  • 1Department of Removable Prosthodontics, Dental School, University of Athens, Greece.

The International Journal of Prosthodontics
|February 24, 2001
PubMed
Summary

All tested denture materials showed roughness above the threshold for bacterial adherence, indicating a risk of plaque accumulation. This highlights the importance of material surface properties in denture hygiene.

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Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering
  • Oral Health Research

Background:

  • Surface properties of denture materials significantly influence clinical outcomes.
  • Plaque accumulation and staining are common issues associated with denture use.
  • Understanding material roughness is crucial for preventing oral biofilm formation.

Purpose of the Study:

  • To evaluate and compare the surface roughness of various commercially available denture materials.
  • To determine if tested materials exceed the threshold for bacterial adherence.
  • To assess the clinical implications of denture material surface properties on oral health.

Main Methods:

  • An in vitro study was conducted on 20 different denture materials.
  • Materials included denture base resins, hard lining materials, and soft denture lining materials.

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  • Surface roughness was quantified using the mean arithmetic roughness (Ra) values measured by a Mitutoyo Surftest SV-400.

    • Main Results:

    • The overall mean arithmetic roughness (Ra) values ranged from 0.7 to 7.6 microns.
    • Denture base materials showed the highest roughness (3.4–7.6 microns).
    • Hard liners (0.7–4.4 microns) and soft liners (0.7–4.0 microns) exhibited varying degrees of roughness.

    Conclusions:

    • All tested denture materials exhibited surface roughness (Ra > 0.7 micron) exceeding the 0.2-micron threshold for bacterial adherence.
    • The inherent roughness of these materials suggests a potential for plaque accumulation.
    • Material selection and surface modification may be necessary to minimize plaque retention and improve denture hygiene.