1. Prevalence and Associated Periodontal Status of Teeth with Root Perforation: A Retrospective Study of 2,002 Patients' Medical Records 
Igor Tsesis, DMD, Ester Rosenberg, DMD, Vadim Faivishevsky, DMD, Anda Kfir, DMD, Menahem Katz, DMD, Eyal Rosen, DMD 
Journal of Endodontics 
Volume 36, Issue 5, Pages (May 2010)
DOI: /j.joen
Copyright © 2010 American Association of Endodontists Terms and Conditions

2. Figure 1
Perforations in mandibular molar teeth. (A) A large crestal perforation with associated pathological changes in the adjacent periodontal tissues. (B) A small apical perforation without associated pathological changes in the adjacent periodontal tissues.
Journal of Endodontics  , DOI: ( /j.joen )
Copyright © 2010 American Association of Endodontists Terms and Conditions