Radiographic assessment of the prevalence of iatrogenic failure in root canal treatment in correlation with location and morphology variations of anterior, premolar, and molar teeth among Palestinian population of west bank and Jerusalem

To survey the incidence of iatrogenic failure in root canal treated teeth in Palestinian population of the west bank and Jerusalem, and to correlate the prevalence of  that failure  with variation of tooth location and anatomical morphology between anterior, premolar and molar teeth, as determined by digital panoramic radiograph collected from all dental imaging centers in west bank and Jerusalem.