Radiographs

Question 1

Periapical

Answer 1

Parallel and bisecting angle technique

Indications related to the Teeth
1. Detect Dental caries
2. Detection of root caries
3. To asses any developmental Anomaly of the teeth
4. To evaluate fracture if the crown and roots
5. Detection of palp and periapical infections
6. Assessment of tooth morphology before treatment
7. During endodontics
8. Preoperative and Postoperative assessment of apical surgery.

Question 2

BITEWING X-RAY

Answer 2

► Is the type of intra oral x ray were the crowns of the upper and lower teeth is seen together in the x-ray.
► It is called so because a bitewing or bite tab is attached to the film on which the patient made to bite
INDICATINS.
► Detection of proximal caries
► Evaluation of alveolar bone height.
► Evaluation of periodontal status
► To detect overhanging restoration.

Question 3

Occlusal radiograph

Answer 3

► It is called so because the image receptor is placed over the occlusal surface of the teeth to be examined.

INDICATIONS
General indications
► In patients having difficulty in mouth opening to various reasons.
► To locate supernumerary, impacted or unerupted teeth
► To evaluate the fracture
► To locate retained root of post extracted socket
► To locate and evaluate the extent of the lesions
► To locate foreign body in maxilla and mandible
► To see lingual and buccal cortical plates.

INDICATION SPECIFIC TO THE MAXILLA
► To examine areas of cleft palate.
► To evaluate the boundaries of maxillary sinus
► To see pathology in the palate e.g. cyst, tumor etc.

INDICATIONS SPECIFI TO THE MANDIBLE
► To locate salivary stones in the duct of the submandibular gland.

Question 4

TYPES of Occlusal radiographs

Answer 4

1. Maxillary
   a) Cross sectional
   b) Topographic. i) Anterior
   ii) Lateral.
2. Mandibular a) Cross sectional b) Topographic. i) Anterior
   ii) Lateral.