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Diagnostic Value of Radiographic Images - Coggle Diagram
Diagnostic Value of Radiographic Images
Intra-Oral Radiographs
B) Periapical Radiographs
Diagnostic Uses:
Apical infections/periapical pathology
Root fractures
Endodontic assessment (working length & treatment process
Structures Seen:
Whole tooth: crown - root apex
Periodontal ligament space
Surrounding bone
C) Occlusal Radiographs
Structures Seen:
Large sections of maxillary / mandibular arch
Palate, floor of mouth
Buccal/lingual views
Diagnostic Uses:
Cysts
Unerupted teeth
Supernumerary teeth
Jaw expansion / abnormalities
A) Bitewing Radiographs
Structures Seen:
Crowns of upper & lower premolars + molars (in occlusion)
Interproximal areas (between teeth)
Alveolar bone levels
Diagnostic Uses:
Early interproximal caries detection
Overhanging restorations
Recurrent decay under existing restorations
Periodontal bone loss assessment
Specialist Investigations & Diagnostic Procedures
A) Cone Beam Computed Tomography (CBCT)
What CBCT Provides:
3D images of teeth, bone, nerve pathways, soft tissues
High resolution, cross-sectional views
Used For:
Implant Planning
- bone density, volume, exact measurements
Endodontics
- root morphology, fractures, hidden canals
Orthodontics
- jaw alignment, impacted teeth
Pathology
- cysts, tumours
TMJ assessment
Extra-Oral Radiographs
A) Dental Pantomograph (DPT) / Orthopantomograph (OPG)
Structures Seen:
All teeth (upper & lower)
Maxilla & mandible
TMJ
Sinuses
Developing dentition
Diagnostic Uses:
Unerupted 3rd molars / canines
Jaw abnormalities / cysts / tumors
Periodontal disease (generalised)
Developmental assessment
B) Cephalometric Radiograph
Diagnostic Uses:
Orthodontic planning
Jaw growth assessment
Evaluate skeletal discrepancies (Class I, II, III)
Treatment monitoring
Structures Seen:
Side (lateral) or front (PA) view of entire skull
Jaw relationship
Tooth alignment in relation to skeletal structure
SUMMARY
Intra-oral
Bitewing
= crowns, interproximal decay, bone levels
Periapical
= full tooth & apex, apical pathology
Occlusal
= arches, cysts, unerupted/supernumerary teeth
Extra-oral
DPT/OPG
= whole jaw, wisdom teeth, periodontal overview
Cephalometric
= skull, orthodontics, jaw relationship
CBCT
3D detail for impacts, endo, ortho, pathology