Comparison between cone beam computed tomography and panoramic radiography in the assessment of the relationship between the mandibular canal and impacted class C mandibular third molars.

Dent Res J (Isfahan). 2011 Oct; 8(4): 203-10
Dalili Z, Mahjoub P, Sigaroudi AK

Preoperative radiographic analysis of impacted third molars is essential to determine a vicinity to a mandibular canal to minimize a risk of nerve injury. Our study aim was to evaluate a attribute between a mandibular canal as well as impacted mandibular third molars regulating cone beam computed tomography (CBCT) as well as to compare commentary therein with breathtaking radiographic signs.CBCT images were taken from 29 patients having 43 Class C impacted mandibular third molars whose breathtaking radiographs showed a close attribute between a mandibular canal as well as mandibular third molars. We evaluated their tomographs to determine a course of a canal, its vicinity to a root, any narrowing of a canal, a presence of root grooving or hooks as well as a vicinity of a root to a cortex. A Chi-square exam was used for data analysis.The lingual course of a canal was a many frequently detected course in all breathtaking findings. Contact of a tooth with a canal was celebrated in all cases in which breathtaking signs of deviation of a canal as well as darkening of a roots were found. The magnitude of observing a narrowing of a canal in CBCT as compared to seeing a presence or a absence of canal narrowing in breathtaking radiographs was significantly different (P=0.01).CBCT provides more accurate diagnostic information to determine a attribute of impacted third molars to a canal. Deviation of a canal as well as darkening of a roots in breathtaking view can be highly valuable to envision a risk of nerve injury.

nursing salaries