Apparatus for determining projection angle of dental periapical radiography and method of using same

Abstract

An apparatus for determining a projection angle of dental periapical radiography includes a body, an angle measuring member, an imaging locator and a projection indicator. The body is a circular cylinder, and the angle measuring member is provided on a top or bottom surface of the body. The imaging locator is detachably coupled to the body, and the projection indicator is pivotally coupled to the body. It operates based on a protractor-assisted projection technique and can avoid ambiguities associated with the angle-bisecting projection technique and operating difficulties associated with the paralleling projection technique. Moreover, it can reduce imaging repetitions and can be easily applied to teaching and professional education due to its ease of understanding and implementation.

Dependencies are inferred from the claim text.