Endodontics · single question
What is the appropriate treatment for a single discolored, endodontically involved (necrotic) anterior tooth?
Show answer and explanation
Correct answer: A. Complete root canal therapy followed by internal (non-vital) bleaching
A discolored necrotic tooth needs root canal therapy first, then internal (walking) bleaching to address the intrinsic discoloration from pulpal breakdown.Other options: External bleaching alone will not correct internal discoloration from a necrotic pulp; crowning without addressing the necrosis is incorrect; observation ignores the pathology.Key exam takeaway: Discolored necrotic tooth = root canal therapy then internal bleaching.