Endodontics(10) Coronavirus disease 2019(9) herpes zoster(9) Apical Periodontitis(8) oral lichen planus(6) COVID-19(6) Varicella zoster virus.(6) periapical lesions(6) Diabetes mellitus type I(6) Hypothyroidism(6) internal resorption(6) Patient(5) disease(5) Treatment(5) were used(5) demographic(5) root canal(5) dental(4) root resorption.(4) Anxiety(4) oximetry(4) pulpal necrosis(3) coronavirus disease(3) practice management.(3) shingles(3) multiple logistic regression(3) less(3) trigeminal nerve.(3) periapical abscess(3) diagnostic(3)