Please enable JavaScript.
Coggle requires JavaScript to display documents.
Dental Radiograph Technique - Coggle Diagram
Dental Radiograph Technique
Intraoral Radiographic Techniques
1.1 Periapical Radiography
Purpose
Shows entire tooth (crown → root apex)
Includes surrounding bone
Used to detect
Periapical infection / abscess
Root morphology
Bone loss
Techniques
A. Paralleling Technique (Long Cone Technique)
Film/sensor parallel to long axis of tooth
X-ray beam perpendicular to tooth and receptor
Most accurate
Preferred method
B. Bisecting Angle Technique
Film placed close to the tooth
Beam directed perpendicular to imaginary bisector
Used when paralleling technique is difficult
1.2 Bitewing Radiography
Shows
Crowns of upper and lower teeth
Alveolar crest
Used to detect
Interproximal caries
Early periodontal bone loss
Types
Horizontal Bitewing
Mainly for caries detection
Vertical Bitewing
Used for periodontal bone level evaluation
1.3 Occlusal Radiography
Technique
Film placed on occlusal surfaces
Captures large areas of maxilla or mandible
Used for
Impacted teeth
Supernumerary teeth
Cysts and tumors
Jaw fractures
Localization of foreign objects
Comparison of Periapical Techniques
Paralleling Technique
Receptor: Parallel to tooth
Beam: Perpendicular to tooth & receptor
Accuracy: High
Image distortion: Minimal
Reproducibility: High
Patient comfort: Less comfortable
Bisecting Angle Technique
Receptor: Close to tooth, not parallel
Beam: Perpendicular to imaginary bisector
Accuracy: Lower
Image distortion: Higher
Elongation
Foreshortening
Reproducibility: Low
Patient comfort: More comfortable