Endo Retreatment

Which of the following can be used to evaluate the periodontal status of a tooth?

• panoramic radiograph

• percussion test

• thermal test

• crown to root ratio

which of the following is a contraindication for nonsurgical retreatment?

• poor obturation

• vertical fracture

• patient symptoms

• missed MB2 canal

which of the following is the least viable treatment option for a tooth presenting with posttreatment endodontic disease?

• nonsurgical retreatment

• do nothing

• class II amalgam

• surgical retreatment

• __ requires total regaining of canal patency​.

What is an indication for non-surgical retreatment?