A computed tomographic study of canal variations in maxillary & mandibular first premolar teeth in jaipur population - An in vitro study.

The present study was carried out to observe root canal variations in maxillary and mandibular first premolar teeth in the local population using spiral computed tomography. Sixty, each of well formed maxillary and mandibular first premolar teeth without any carious lesions were used in this study. They were placed in 5% sodium hypochlorite solution for 30 minutes for the removal of organic debris. They were then stored in normal saline till further experiment was carried out. Each tooth was scanned with a slice thickness of 0.625 mm. Data collected was used to reconstruct the scanned teeth three dimensionally. The configuration seen in longitudinal and transverse sections was used to classify the canal anatomy according to Vertucci’s classification.