TOPIC: BITEWING RADIOGRAPHY

🌟IMPORTANT POINTS TO REMEMBER

🔹Position of bite: The tab or bite platform should be positioned in the middle of the film packet and parallel to the upper and lower edges of the film packet.

🔹Position of film packet: The film packet should be positioned with its long axis horizontally for horizontal bitewing or vertically for vertical bitewing.

🔹Four sizes of the film are used in the bitewing radiography: size 0, size 1, size 2 and size 3 (27 × 54 mm).

🔹Horizontal angulation: In the horizontal plane, the X-ray tube head should be aimed in such a way that the beam is perpendicular to the teeth and film packet. It should pass through all of the contact areas.

🔹Vertical angulation: Positive 10° angulation should be used in the case of molar bitewing, and positive 5° angulation is used for premolar bitewing.

🔹Point of entry: The central ray should be directed through the occlusal plane of teeth towards the centre of the film packet.

🔹There are mainly three techniques available: simple film packet tab technique, simple film packet with film holder technique and reproducible film packet holder technique.

🔹Anterior bitewing: It may be necessary to take bitewing of anterior teeth to aid diagnosis. Vertical bitewing is taken in case of anterior bitewing.