Comparison of paralleling and bisecting angle techniques endodontic working length radiography

ABSTRACT

This cross sectional comparative study was carried out to compare paralleling technique [PT] and bisecting angle technique [BAT] for working length radiography in endodontics. A sample of 120 patients was selected through purposive sampling. The patients were divided into two groups depending on the arch to be radiographed namely Group A for maxillary arch and group B for patients with mandibular teeth requiring endodontic radiography. Each patient underwent two radiographs, one with each paralleling and bisecting angle techniques respectively giving a total of 240 radiographs. Endo Ray II film holder [Dentsply] was used for PT while a hemostat was utilized for BAT. The results showed a higher accuracy in terms of decreased procedural errors with paralleling technique as compared to bisecting angle technique for teeth in maxillary arch [p<0.05], whereas for mandibular arch there was insignificant difference [p>0.05] between the two techniques. Overall paralleling technique was found to have better results than bisecting angle technique, during endodontic working length radiography