Canal Configuration in the Mesiobuccal Root of the Maxillary First Molar and Its Endodontic Significance

Summary: 

Purpose: to determine MB root canal configuration and incidence of MB2  in maxillary 1^st molar.

N=208 extracted maxillary 1^st molars.

Materials/Methods:

•from the mesial side of the tooth, teeth were sectioned in buccolingual direction using coarse sandpaper disk.

•Then they were viewed and classified.

Most highlighted Results:

•3 canals configuration were observed: 

•Type I: single canal/single foramen.(48.5%).

•Type II: 2 canals/ 1 foramen, joining 1-4 mm from apex.(37.5%).

•Type III: 2 canals/2 foramina.(14%).

•Type IV: 1 canal / 2 foramina •

Clinical significance:

•Established simple classification system (aid in communication).