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Reconstructing Tooth Proximal Surface With Composite Resin Using Contemporary Sectional Matrix Systems.

Taiseer A Sulaiman1, Tariq A Alsahafi2, Fernanda de O M Frizoni3

  • 1Associate Professor, Department of Restorative Sciences, Adams School of Dentistry, University of North Carolina School of Dentistry, Chapel Hill, NC, United States.

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PubMed
Summary

The STRATA-G sectional matrix system demonstrated superior performance in restoring proximal contour and marginal overhang compared to Biofit HD and Palodent Plus. It also exhibited significantly higher ring retention, ensuring restoration integrity.

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Area of Science:

  • Restorative Dentistry
  • Dental Materials Science
  • Biomaterials Engineering

Background:

  • Restoring proximal contour, embrasure, and contact in cavities is a persistent clinical challenge.
  • While various sectional matrix systems exist, objective evaluations of modern options are limited.

Purpose of the Study:

  • To objectively evaluate and compare the performance of three sectional matrix systems.
  • Assess their impact on proximal contour, composite resin flash, marginal overhang, and ring retention.

Main Methods:

  • Utilized 45 plastic molars with mesio-occlusal cavities.
  • Compared STRATA-G, Biofit HD, and Palodent Plus systems.
  • Employed 3D analysis for contour and overhang, and pull-out tests for ring retention.

Main Results:

  • STRATA-G showed significantly less proximal contour variation (100 μm) and marginal overhang (26.9 μm).
  • Ring retention was highest for STRATA-G (7.27 N) compared to Biofit HD (5.47 N) and Palodent Plus (3.35 N).
  • No significant difference in average marginal overhang was found between systems (p=0.182).

Conclusions:

  • STRATA-G system offers superior proximal contour restoration and reduced marginal overhang.
  • STRATA-G provides enhanced sectional matrix ring retention for secure restorations.
  • Objective data aids clinicians in selecting appropriate sectional matrix systems.