International Journal of Life science and Pharma Reviews (IJLPR)  
   
 
International Journal of Life science and Pharma Research (IJLPR)
Pharmaceutical Sciences
Volume 6 Issue 3, July-September 2016    Pages:32-39
EVALUATION OF ROOT ANATOMY AND MORPHOLOGY OF MANDIBULAR PREMOLARS WITH CBCT IN IRANIAN POPULATION

ROGHANIZAD NASRIN1,KHALILAKZOHREH2,PANJNOUSH MEHRDAD3 AND GHOLAMSHAHI MAHBOUBEH4*
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DOI: DOI not available
Abstract:
There are different methods for investigating anatomy and morphology of root canal. One useful clinical method is applying cone beam computed tomography which lessens the limitations of two dimensional radiography images and it has fewer rays with higher resolution. Considering the importance of anatomy and morphology of canal in cleaning and formation of root canal system, based on incompatible results from various studies, and due to insufficient researches in terms of planning and research methodology, this study aimed to investigate root anatomyand mandibular first and second canal by CBCT in Iranian population during 2014-2015. This study was performed cross-sectional. Studied population included mandibular premolarteeth that were healthy and recognizable crown with healthy and evolved apex without central or internal desorption and root crack and without restoration from CBCT images. 300 CBCT images were studied statistically. What we examined was teeth of mandibular first and secondpremolarin terms of gender, root length, root number, numbers of each root canals, canal types, presence of isthmus, intervalscanal orifice , and finally anatomy symmetry. Statistical analysis was conducted by SPSS software. 95% of mandibular first premolar teeth in left side were single rooted and 5% were double rooted, 76/5% were single canal and 23/5% was double canal. In right side, 96/3% were single rooted and 2/7% were double rooted, 78% single canal and 21/9% were dc. 96/6% of second premolar teeth in left side were single rooted and 4% were double rooted, 85/5% were single rooted and 14/5% were double in right side 99/3% were single rooted and 0/7% were double rooted and 92/5% were single canal and 7/5% were double canal which all indicated that there was no significant difference between first and second premolars. Based on results it was illustrated that first and second premolar teeth were almost single rooted (95%, 99/6%) with one canal (type I) and secondlytype V had the most prevalence rate. Second premolars in nearly all cases were single rooted and there was no difference in tooth type. Direction of root curvature was direct in most cases (54%) and then distal direction was in second priority (37%) and there was no difference in tooth type.
Keywords: premolar canals, CBCT, root and canal anatomy, mandibularpremolar teeth
 
 
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