Transcoronal Approach for Endodontic access to the Fourth Maxillary Premolar in Dogs

Endodontic procedures are frequently recommended for crown fractures of the fourth maxillary premolar. The success of conventional endodontics in this multirooted tooth depends entirely on adequate access to the roots of this tooth. Direct access to all three roots of the canine fourth maxillary premolar is desirable. However, it is difficult to access the root canal system without removing significant tooth structure. The distal root is less difficult to access than the mesiobuccal or mesiopalatal root. A transcoronal technique used to approach the mesiopalatal root is described and illustrated.