The goal of this observational study is to evaluate the difficulty levels of restorations of endodontically treated teeth. The main question it aims to answer is:

• Does the 8 predetermined criteria effect the difficulty levels of restorations of endodontically treated teeth.

Participants who has endodontically treated teeth or teeth to be treated endodontically, will undergo clinical and radiological examination. After that clinician will score the teeth between 1-6 based on predetermined criteria.

Inclusion Criteria:

Patients who have at least one tooth with root canal treatment

Exclusion Criteria:

Patients who does not have any teeth with root canal treatment

Patients who applied to Erciyes University Faculty of Dentistry, Department of Restorative Dentistry