Summary:

Purpose: to identify, treat, and record the number of canals and their relationship to each other in the maxillary molars of the human dentition.

N= Maxillary 1st  molar :  1096,  max. 2nd : 611 , max .3rd : 25

Materials/Methods: 

• Data was obtained from patients’ records  treated from 1989 to December 1997.

• The MB2 canal was considered to be present if the author was able to instrument the canal to a depth of 3 to 4 mm after a troughing process.

Most Highlighted Results:

• Over all result :  For max 1st molar : MB2 canals were present in 802 (73.2%)
• For max 2nd  molar: MB2 canals were present in 310 (50.7%)
• For max 3rd molar: terminus. MB2 canals were only present in 5 (20.0%) teeth
• Results obtained in last 2 years of the study 1996, 1997 (which they used microscope):
• MB2 canals were located in 93.0% of first molars and 60.% in second molars.

Clinical Significance

• When treating Max. molars , using DOM is important in order to detect MB2 canal

After a dental operating microscope (DOM)