Poster Presentation

Poster Presentation

PR77 - Presence of Apical Periodontitis After Endodontic Treatment Compared to Apical Extent of Root Filling Material Using CBCT Imaging: A Retrospective Study

Thursday, April 26
10:00 AM - 1:00 PM
Room: Exhibit Hall

Background: Sjogren reported on the correlation between success of root canal treatment and the apical extent of canal obturation in teeth with AP. This study investigated the correlation between the occurrence of AP with the apical extent of canal obturation in previous non-surgical root canal treatment by analyzing cone beam computed tomography (CBCT) images taken for both endodontic and non-endodontic reasons.


 


Materials & Methods: This retrospective study analyzed 200 mandibular molar teeth or 567 canals. CBCTs were evaluated by measuring the distance between the apical extent of the canal obturation from the radiographic apex (RA) in both coronal and sagittal views of each canal. They were categorized as > 2mm short of the RA, 0-2 mm short of the RA, or extended beyond the RA. The presence/absence of AP, presence of voids in the canal, and type of restoration (crown, filling, none) was also recorded. Chi-square and ANOVA were used for statistical analysis.


 


Results: 205 of 567 canals (36.2%) had AP. Incidence of AP in first molars was 42.4% (158/373 canals) while the incidence for second molars was 25% (47/188), p < .001. AP was present in ( 32% (138/429) of canals obturated 0-2mm from the apex, 45% (35/78) of canals >2mm short and 53% (32/60) of canals obturated past the radiographic apex, p < .01.


 


Conclusion: The results of this study further indicate that teeth obturated 0-2mm from the RA have the lowest incidence of AP. These findings confirm a standard of care for ideal root filling length during endodontic treatment.


 


Key Words: Endodontically treated teeth, CBCT, apical periodontitis.

Andrea J. Tory-Godlew

Endodontic Resident
University of Louisville

Graduated from University of Detroit Mercy School of Dentistry in 2012. Spent four years on active duty in the United States Army as a practicing general dentist. Graduating from University of Louisville Endodontics program in June, 2018.

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Bruno Azevedo

Oral Maxillofacial Radiologist
University of Louisville School of Dentistry

Dr. Azevedo attended the University of Texas Health Science Center in San Antonio where he received both a certificate in Oral Maxillofacial Radiology and Master’s in Dental Diagnostic Science in 2009. He is a diplomate of the American Board of Oral and Maxillofacial Radiology. Dr. Azevedo has presented at over 50 national and international scientific meetings about dental 3D technology with particular emphasis on endodontic diagnosis and CBCT interpretation. Dr. Azevedo operates an intramural CBCT imaging facility at the University of Louisville and provides consulting services in Oral Maxillofacial Radiology.

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Katherine Wolken

Endodontic Resident
University of Louisville

Originally from St. Louis, Missouri. Attended University of Missouri Kansas City School of Dentistry, graduated in 2009. Practiced general dentistry in St. Louis until 2017 until starting endodontic residency at University of Louisville School of Dentistry. Married with two children.

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Stephen Clark

Director of Post Graduate Endodontics Department
University of Louisville

Endodontics Post Graduate Program Director at University of Louisville School of Dentistry since 1999. Attended University of Kentucky School of Dentistry where he earned his DMD degree and then later, his certificate in endodontics. Married to Dr. Mary Clark and has one grown son.

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Shiva Toghyani

Radiologist
University of Louisville

Dr. Toghyani is a Diplomate of the American Academy of Oral and Maxillofacial Radiology. She received her master’s degree in Oral and Maxillofacial Radiology from University of Texas Health San Antonio in 2016 and currently serves and an assistant professor of radiology at University of Louisville School of Dentistry. She is a journal reviewer of the Oral Surgery, Oral pathology, Oral Medicine and, Oral Radiology. Her research background is mainly focused on utilizing digital dental radiographic modalities. She is actively involved with several committees of the AAOMR.

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William Scarfe

Radiologist
University of Louisville

Biographical Sketch: Dr. Scarfe is a Diplomate of the American Board of Oral and Maxillofacial Radiology and registered as a Specialist Oral and Maxillofacial Radiologist in the Commonwealth of Kentucky. He is a Fellow of the Royal Australasian College of Dental Surgeons, a Fellow of the International Team for Implantology (ITI) and current Scientific Editor of the Oral Radiology Section of Oral Surgery, Oral Pathology, Oral Medicine and, Oral Radiology. He has served as the Treasurer of the American Academy of Oral and Maxillofacial Radiology and Vice President of the International Association of Dento-Maxillofacial Radiology. Dr. Scarfe has published extensively on cone beam computed tomography (CBCT) including recent consensus statements on general and specific use guidelines and discipline specific applications of cone beam computed tomography. He co-authored two chapters on CBCT in the 7th edition of the standard dental undergraduate textbook Oral Radiology: Principles and Interpretation by White and Pharoah. He has presented internationally as well as nationally and is active in research on the clinical applications of CBCT imaging. He is co-Director of a University-based intramural private practice in CBCT imaging since 2004

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PR77 - Presence of Apical Periodontitis After Endodontic Treatment Compared to Apical Extent of Root Filling Material Using CBCT Imaging: A Retrospective Study



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