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Detection and Removal of Tooth-Colored Composite Resin Using the Fluorescence-Aided Identification Technique

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The assessment of different bleaching agents' efficiency on discoloured teeth using image-processing methods.

Ismail Ozkocak¹, Mahmut Hekim², Hakan Gokturk¹

¹Bolu Abant Izzet Baysal University, Faculty of Dentistry, Department of Endodontics, Bolu, Turkey.

Photodiagnosis and Photodynamic Therapy

|June 30, 2020

Summary

Triple antibiotic paste (TAP) can discolor teeth during regenerative endodontic treatments. Various bleaching agents effectively removed this discoloration, with effectiveness increasing over time. This study evaluated bleaching agents for TAP-induced tooth discoloration.

Keywords:

Image-processing Intracoronal bleaching Laser-activated bleaching Regenerative endodontics Root canal medication TAP

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Area of Science:

Endodontics
Dental Materials Science
Restorative Dentistry

Background:

Triple antibiotic paste (TAP) is a common intracanal medicament for regenerative endodontic treatments.
TAP has been associated with significant tooth discoloration, posing an aesthetic challenge.
Effective bleaching protocols are needed to manage TAP-induced tooth discoloration.

Purpose of the Study:

To evaluate the efficacy of different bleaching agents in removing tooth discoloration caused by TAP.
To compare the color change (ΔE) achieved by various bleaching agents over time.
To assess the suitability of the CIE Lab color system for evaluating bleaching effectiveness.

Main Methods:

120 human maxillary incisors were discolored with TAP for three weeks.
Teeth were randomly assigned to five groups: negative control, sodium perborate, Opalescence Endo, Endoperox, and Biolase.
Color changes were measured using stereomicroscopy and the CIE Lab color system on days 3 and 7.

Main Results:

No significant difference in bleaching efficacy was observed among agents on day 3.
On day 7, Biolase showed superior results compared to sodium perborate; other agents showed no significant differences.
All tested bleaching protocols demonstrated increased effectiveness over time.

Conclusions:

Investigated bleaching protocols can effectively address TAP-induced tooth discoloration.
Bleaching effectiveness improves with extended treatment duration.
The CIE Lab color system provides a reliable in vitro method for assessing bleaching agent efficiency.