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Root canal morphology of the maxillary second molar

| September 19, 2012 | 0 Comments

Root canal morphology of the maxillary second molar

The maxillary second molar closely resembles the first molar. However, the number of canals is usually three, sometimes two, but also four canals can be found (two canals in the mb root). A typical upper second molar resembles the first molar, the difference being that the orifices of the mb and db canals are closer together; sometimes almost forming a line (mb – db – pal). Sometimes the two buccal canals are side by side in the mesio-distal dimension. The apical part of the palatal and the mesiobuccal canals is not as curved as in the first molar.

1 Root canal morphology of the maxillary second molar

2 Root canal morphology of the maxillary second molar

3 Root canal morphology of the maxillary second molar

4 Root canal morphology of the maxillary second molar

5 Root canal morphology of the maxillary second molar

Second Molar
Average length - 20 mm
Morphology
The secondary mesio-buccal canal of maxillary molars. – usually 3 rooted with 3 canals but can exhibit a 4th canal. Three orifices may be configured in a straight line.
Mesiobuccal root:
One canal – 63%
Two canals – 37%
Type II – 13%
Type III – 24%
Access - quadrilateral (to locate 4th canal). The DB canal orifice typically exists beneath the central occlusal pit (unlike in the first molar).

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Category: Endodontics

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