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Although it is a very rare situation, four-rooted maxillary second molars can occur. The existence of two palatal roots is extremely rare and ranges about only 0.4%. The aim of this study is to present and document a very rare anatomic configuration of a four-rooted maxillary second molar. Anatomic variation in the number of roots and root canals can occur in any tooth, although some cases can be extremely rare as the one presented here.Clinicians should be aware of this possibility beforedoi:10.20431/2456-0030.0102003 fatcat:56gstqfp3zcbdalci4clvtneka