Analysis of tooth staining by endodontic medication in root canal therapy using spectrophotometry.

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.