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Updated: Jun 3, 2025

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material

Published on: December 20, 2024

Immediate Pre-Endodontic Dentin Sealing (IPDS) Improves Resin-Dentin Bond Strength.

Marco A Carvalho¹, Priscilla C Lazari-Carvalho¹, Paulo E T Maffra²

¹School of Dentistry, Evangelical University of Goiás (UniEVANGÉLICA), Anápolis, Brazil.

Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [Et Al.]

|January 6, 2025

Summary

This summary is machine-generated.

Applying dentin hybridization before endodontic treatment significantly improves resin-dentin bond strength. Delaying this step requires substantial tooth structure removal to restore bond strength, highlighting the importance of early intervention for better outcomes.

Keywords:

Dentin bonding Endodontics Root canal irrigants

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Area of Science:

Dental Materials Science
Endodontics
Adhesive Dentistry

Background:

Endodontic procedures involve chemicals and sealers that negatively impact dentin bond strength.
Maintaining the integrity of the resin-dentin bond is crucial for the longevity of endodontically treated teeth.

Purpose of the Study:

To evaluate a novel clinical protocol for enhancing resin-dentin microtensile bond strength (μTBS) in endodontically treated teeth.
To investigate the effect of the timing of dentin hybridization on bond strength after endodontic treatment.

Main Methods:

Human molars were divided into four groups: control, late dentin hybridization (LDh), immediate pre-endodontic dentin sealing (IPDS), and post-endodontic late dentin hybridization (PLDh).
Dentin hybridization timing varied: before chemical exposure (IPDS), after chemical exposure (LDh), or after chemical exposure and repreparation (PLDh).
Teeth were restored with resin composite, and μTBS was assessed after 24 hours.

Main Results:

The PLDh, IPDS, and control groups exhibited the highest bond strength values, with no significant differences among them.
The LDh group showed the lowest bond strength, representing a 70% decrease compared to the control group.
Dentin hybridization performed before chemical exposure significantly improved bond strength.

Conclusions:

Dentin hybridization prior to endodontic chemical exposure is critical for maintaining optimal resin-dentin microtensile bond strength.
Performing dentin hybridization after endodontic treatment necessitates significant repreparation of dentin to regain bond strength.
Early dentin hybridization preserves tooth structure, potentially reinforces weakened cusps, and improves isolation, offering significant clinical advantages.