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Surface treatment techniques for resin composite repair

M R Bouschlicher1, J W Reinhardt, M A Vargas

  • 1University of Iowa, Iowa City 52242, USA.

American Journal of Dentistry
|May 20, 1998
PubMed
Summary

The low-pressure silicate ceramic deposition system (CJ-S) provided the highest bond strengths when bonding fresh resin composites to aged composite surfaces. This surface treatment method outperformed others, with or without silane application, for improved composite repair.

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Area of Science:

  • Dental Materials Science
  • Adhesive Dentistry
  • Polymer Science

Background:

  • Dental restorations often require repair or re-bonding of fresh composite to aged, polymerized composite.
  • Surface treatment is critical for achieving durable bonds between new and old composite materials.
  • Evaluating different surface preparation techniques is essential for optimizing clinical outcomes in restorative dentistry.

Purpose of the Study:

  • To compare the shear bond strengths of fresh resin composites bonded to aged composite substrates.
  • To evaluate the efficacy of various surface treatments, including diamond bur, microetching, air abrasion, and ceramic deposition, on bond strength.
  • To determine the influence of silane application on the bond strength following different surface treatments.

Main Methods:

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  • Eighty specimens of Pertac Hybrid and Silux Plux composites were aged for one week.
  • Surface treatments included diamond bur, microetcher with Al2O3, high-pressure air abrasion (KCP), and low-pressure silicate ceramic deposition (CJ-S).
  • Half of the treated specimens received a silanating agent before bonding fresh composite, followed by thermocycling and shear bond strength testing.

Main Results:

  • Significant differences in bond strength were observed based on surface treatment type and silane application (P < 0.05).
  • A significant interaction effect between surface treatment and silane use was noted (P < 0.05).
  • The low-pressure silicate ceramic deposition system (CJ-S) yielded the highest shear bond strengths, irrespective of silane application.

Conclusions:

  • Low-pressure silicate ceramic deposition (CJ-S) is a highly effective surface treatment for re-bonding resin composites.
  • Silane application may not be necessary when using the CJ-S system, simplifying the repair procedure.
  • The findings support the use of CJ-S for improving the longevity and success of composite restorations requiring repair.