ENDODONTIC MANAGEMENT OF AN UNCOMMON ANATOMIC VARIATION OF MANDIBULAR SECOND PREMOLARS: A CASE REPORT.

Abstract

In the literature we found that approximately 98% of the mandibular second teeth premolars are single-rooted. The incidence of two roots was 1.8%. Three roots were found in 0.2% of the teeth studied. Four roots were rare and were found in less than 0.1% of the teeth studied. Studies of the internal canal morphology revealed that a single canal was present in 75.8% of the teeth. Two or more canals were found in 24.2% of the evaluated teeth. A single apical foramen was found in 78.9% of the teeth, whereas 21.1% had two or more apical foramina. Major reason for failure of root canal treatment is miss canals. The premolars are difficult for endodontic treatment and have higher failure rate. This may be due to their anatomic variations of the root canal morphology. The bucal canal is easier to be founded while the lingual is more often missed when the tooth has two canals presented. The comlications may occur if the endodontist does not use the latest diagnostic equipment which decrease the chances of success. This article reports and discusses the successful treatment of a mandibular second premolar with two canals in a 43-year old Bulgarian male. Clinical examination showed a large carious lesion with pulp exposure. Radiographs showed no periapical changes. An endodontic treatment with TF-system was made and the canals were obturated with the method - cold lateral condensation and a sealer.

Keywords

• Root canal morphology
• mandibular first premolar
• number of canals
• number of roots