Purpose: to preform long term evaluation of surgically treated teeth with amalgam as retrograde filling before 1981
1. N : 104 teeth from 96 patients recalled for follow up and evaluation with postoperative radiographs which were taken at least 10 years ago 2.Successful criteria : if the treated tooth is functional, no clinical symptoms and the radiograph showed that the lesion healed completely
3.Failure criteria : if the root fracture , faulty technique (like perforation or improper preparation ) , periodontal or restorative failure
Most highlighted Results:
-Out of 104 teeth from 96 patients , 60 teeth (57.7%) were found to be successful
-44 teeth (42.3%) were found to be failed
• long-term retrospective evaluation should be considered when we trying to introduce a new material for retrograde filling .