Intraoral Radiographic Techniques

Write in detail about intraoral radiographic techniques.
Answer.

The following are the intraoral radiographic techniques:

Periapical radiography
- Paralleling or right-angle, or long-cone technique
- Bisecting angle or short cone technique
Bitewing radiography technique
Occlusal radiography techniques

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Intraoral radiographic techniques

For the paralleling technique and the bisecting angle technique.

The following is the bitewing radiography technique:

Bite platform is positioned over the center of the film packet. The bite platform should lie parallel to the upper and lower edges of the film packet.
The head of the patient is positioned by adjusting the headrest. Positioning of the head is such that the upper arch lies parallel to the floor and the mid-sagittal plane lies perpendicular to the floor.
Secure the lead apron and thyroid collar.

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Dental intraoral radiography

The film should be placed over the prescribed area.
The film should be positioned parallel to the crowns of both maxillary and mandibular teeth. The film should be stabilized by biting on the film holder.
Vertical angulation of the central ray is directed at +10°.
Horizontal angulation of the central ray is directed through contact areas between the teeth.
X-ray beam should be centered on the film to ensure that all the areas of the film are exposed and a partial image or cone cut is avoided.

For Technique of bitewing radiography.

Occlusal Radiography Techniques

The following are the basic steps for all occlusal radiography techniques:

The white side of the film should face towards the arch.
Placement of film in the mouth is between the occlusal surfaces of mandibular and maxillary teeth.

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Periapical radiographic technique

Stabilization of the film occurs when the patient gently bites on the surface of the film.
For maxillary occlusal films patient’s head is positioned such that the upper arch is parallel to the floor, and the mid sagittal plane should be perpendicular to the floor.
For mandibular occlusal films patient’s head should be reclined and positioned such that the occlusal plane is perpendicular to the floor.

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