Comparative evaluation of root canal system morphology in first and second maxillary molars using CBCT and periapical radiography in Iranian population(Tabriz)

Abstract

having a complete knowledge of morphology of root canals is an important prerequisite in root canal treatment. Today regarding technolo``gy advancement, using CBCT has changed into the most reliable method in order to identify the number and morphology of canals and it is the most common root canal study and is utilized as the golden standard in identifying root canal morphology. The introduction of cone-beam CT system has caused a revolution regarding craniofacial set imaging. The advantages of this imaging method are as follows: it is not damaging, it simulates root canal in 3 dimensional statuses , the precision and resolution of images are enhanced, and the amount of faults in the images is reduced. Periapical radiographic study is important because we can identify the position of mesiobuccal canal by different angels. Thus, in the present study we intend to investigate about the accuracy of the results of computerized tomography by using cone beam CBCT ray and the presence or absence of second mesiobuccal canal in first and second maxilla molar teeth, the distance between orifices and canal types based on Vertucci categorization system and compare the recognition type of canal form and second mesiobuccal canal with periapical. Materials and procedure: We used the data on CBCT and P.A in Radiology wared in Dentistry department of Tabriz Univercity abouth 156 patient to investigate first and second molars maxillary anatomy, based on Vertucci categorization, CBCT with cross sectional cuts regarding the presence or absence of second mesiobuccal canal and orifice distance from the first mesiobuccal and canalsE morphology, were investigated. Also the recognition capability of second mesiobuccal canal was studied in periapical radiography in imagen taken. Findings: in studies carried by using CBCT. The results gained for first and second molar teeth showed that the spread of the second mesiobuccal canal in first molar tooth was 55.1% and this amount was 44.1% among females, while it was 66.3% among males. In results gained regarding the second maxilla molar tooth, the amount of spread of second mesiobuccal canal was 23.7% and this among was 15.7% among female, while it was 30.2% among male. By comparing the orifices of MB1 and MB2 distances, the following results were gained. The greatest distance recorded between the orifices was 2.4 mm and the least distance was 0.3 mm and the mean of distances recorded was 1.3 mm.(p 0.01) Conclusion: Regarding the results of the present study CBCT method is more reliable.