Search box is loading.....

Friday, June 23, 2000

Conservative and Endodontics MCQ Answer 9

Friday, June 23, 2000

Answer: D (maxillary 1st molar)

The largest tooth in volume and the most complex in root and canal anatomy, the “six year molar” is possibly the most treated and least understood posterior tooth. Studies vary in the number of canals present however, the clinician should always assume there are two canals in the mesiobuccal root until it is proven that there is only one. In addition, the palatal often curves toward the buccal at the apical 1/3 that may not be obvious on a radiograph.

In contrast, according to a study by Skidmore and Bjorndal, 1/3 of mandibular first molars had four root canals.


1. Cohen S et al. Pathways of the Pulp, 8th edition, Mosby, 2002.


Post a Comment

Please Leave your take on these notes and mcqs. Your feedback is much appreciated.



Every effort has been made to ensure that this information is accurate and within generally accepted medical standards.The information given at this site is for educational purposes only and is not sufficient for medical decisions. I disclaim any liability for the acts of any physicians or any other individual who receives any information on any medical procedure through this web site. I accept no legal responsibility for any injury and/or damage to persons or property from any of the suggestions or material discussed herein. The reader should confirm the information in this text using other authoritative source prior to use.

Disclosure Policy

  • I occa­sion­ally make rec­om­men­da­tions and post links for which I get compensation.

  • These rec­om­men­da­tions are based first and fore­most on their merit.

  • Most affil­i­ate links are added inci­den­tally or sub­se­quently. Some links are direct, and do not have any affil­i­a­tion or compensation.

  • Some endorse­ments are obtained through com­pen­sa­tion, such as free review copies.

For More Information see Disclosure Policy

Visitors Since January 2010