Is it important to root fill 4 or 5 canals in upper molar teeth?

A. We can probably break this question down into two parts. The first part being that it is vitally important to clean, shape and fill all root canal anatomy that exists within the tooth. The second point is how many canals one should expect to find in upper molar teeth. The most commonly missed canal in upper molars in the infamous MB2 or second mesio-buccal canal. We now know that almost all upper first molar teeth have this canal and the majority of second molars also. This is usually located in the line between the mesio-buccal canal and the palatal hence it is sometimes called the mesio-palatal canal. This anatomy exists as well as the more commonly found disto-buccal, mesio-buccal (one) and palatal canals. With the advent of magnification and ultrasonics in dentistry there are many great new products which help us locate and instrument these canals. For more details on these items and many others have browse through the products sections of our website.