Hawler Medical University College of Dentistry

Department of Radiology4th Stage Group C

Seminar : Bisecting angle Technique By : Mohsen M. Mirkhan

• Intraoral radiography 1. Bisecting angle technique2. Paralleling technique 3. Bitewing technique4. Occlusal Radiograph

• Extra Oral Radiography

Periapical radiography

Periapical Radiography

Short- Cone technique Long-Cone technique

Rules of the Technique

OverlapIs the superimposition of part of one tooth with part of adjacent tooth If the horizontal angulation is not aligned properly

Shortening or lengthening of the teeth depend on the vertical angulation

Increase vertical angulation decrease the length of teeth and vise versa

Film cone-cut

X-ray Beam not cover the entire film lead to white area formation on the film

Thank You!