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Updated: Jun 10, 2025

Detection and Removal of Tooth-Colored Composite Resin Using the Fluorescence-Aided Identification Technique
Published on: July 27, 2022
Analysis of tooth staining by endodontic medication in root canal therapy using spectrophotometry
Ayesha Tehreem1, Nimeshika R2, Satabdi Pattanaik3
1Department of conservative dentistry and Endodontics, HKE's Sri Nijalingappa Institute of Dental Sciences and Research, Gulbarga, Karnataka, India.
Abstract:
The assessment of the discoloration caused by calcium hydroxide, triple antibiotic paste, and chlorhexidine gel when used as intra-canal medicaments in teeth undergoing root canal treatment is of interest. The study measured the discoloration over seven and fourteen days using a spectrophotometer. After obtaining ethical clearance, ninety anterior teeth requiring root canal therapy were selected based on eligibility criteria. Using basic randomization, participants were split up into three groups, each consisting of thirty patients. The colorimeter was used to measure preoperative, one and two weeks following the medication's removal. All groups showed significant discoloration, with 2% chlorhexidine gel (p≤0.03) and triple antibiotic paste (p≤0.02) causing the highest discoloration in the central region of teeth. The discoloration was inversely correlated with the remaining dentin thickness. Thus, intracanal medicaments used for endodontic treatment cause tooth discolouration.
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