How many pulp horns does the permanent maxillary second molar usually have?

Name: How many pulp horns does the permanent maxillary second molar usually have?
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Each major cusp of the permanent maxillary second molar usually has one pulp horn,giving it four pulp horns: mesiobuccal,distobuccal,mesiolingual,and distolingual.The crown usually has four cusps.The pulp cavity of a maxillary second molar consists of a pulp chamber and three main pulp canals,one for each of the three roots.

How Many Pulp Horns Does the Permanent Maxillary Second Molar