ADA Accessibility Information



Extra Root

Mandibular first molar. I often see an extra root in the mandibular first molar in the Asian population. I noticed that the extra root tends to be at the distolingual and often has a buccal apical acute curve. When it is at the distolingual it is called Radix Entomolaris. If it is on the buccal aspect, then it is called Radix Paramolais.

Case 1

Patient presented with pain at the # 19 area. Diagnosis was acute symptomatic apical periodontitis. Non-surgical retreatment was recommended and completed.
Pre-op PA radiograph
Post-Op radiograph

Case 2

Radix Entomolaris. Note the usual PDL of the distal root. When encountering images of this type, be suspicious of unusual anatomy and either take a CBCT to verify if take a mesial or distal shift shot radiograph.

icon pin

Office Location

10251 Torre Ave, Suite 100 Cupertino, CA 95014

icon time

Opening Hours

Mon–Fri: 8am – 5pm
Saturday: Limited by Appointment

icon dial


(408) 252-8833

Copyright © 2018-2024 Bexter M. Yang, DDS, MS. All rights reserved.  Sitemap
Bexter M. Yang, DDS, MS, 10251 Torre Ave, Suite 100 Cupertino, CA 95014 | (408) 252-8833 | | 5/29/2024 | Associated Words: Endodontist Cupertino CA |