Endodontics · single question
Which diagnostic method will NOT help in diagnosing a cracked tooth?
Show answer and explanation
Correct answer: C. Radiography
✓ C) Radiography is the LEAST helpful for cracked tooth syndrome.
Cracks run mesiodistally and are typically not visible on periapical or bitewing radiographs because X-rays must pass parallel to the crack to detect it — this almost never happens clinically. Useful methods include: transillumination (light passes through enamel but stops at the crack), dye penetration, tooth sleuth/bite stick (reproduces pain), and direct visual examination after staining. Radiography is unreliable for cracked tooth diagnosis.
Cracks run mesiodistally and are typically not visible on periapical or bitewing radiographs because X-rays must pass parallel to the crack to detect it — this almost never happens clinically. Useful methods include: transillumination (light passes through enamel but stops at the crack), dye penetration, tooth sleuth/bite stick (reproduces pain), and direct visual examination after staining. Radiography is unreliable for cracked tooth diagnosis.