Solid indications
- Endodontically treated molar that bites hard: The classic study found about 6 times more losses without protective coverage. Premolars and molars after endodontic treatment are the prime indication.
- Extensive destruction due to cavities or a fracture, when few walls remain and the inlay no longer has anywhere to grip.
- Symptomatic cracks that hurt when chewing: full coverage embraces the tooth and prevents the crack from progressing.
- On an implant, as a permanent tooth — with its own rules, below.


