when the apical foramen cannot be sealed by conventional endodontics.
when a root perforation needs to be sealed.
All of the above.
1 explanations
oneguy
The indication of retrograde filling include: (1) Apical granuloma refractory to conservative treatment (2) Conventional treatment ineffective (3) Treatment of failure cases after conservative treatment of teeth with apical periodontitis (4) Post or broken file in the canal (5) Root oerforation (6) External root resorption
oneguy