CPT Radiographic Analysis & Bone Assessment Flashcards
6 cards from real CPT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CPT Radiographic Analysis & Bone Assessment flashcards as text
On a periapical radiograph, the lamina dura represents:
Answer: The cortical bone lining the tooth socket
The lamina dura is the radiodense cortical bone lining the tooth socket; its presence or absence reflects periodontal health.
A widened periodontal ligament (PDL) space on a radiograph may indicate:
Answer: Occlusal trauma or early periapical pathology
A widened PDL space may indicate occlusal trauma, early inflammatory changes, or periapical pathology affecting the supporting structures.
Which radiographic view best demonstrates interproximal bone levels in posterior teeth?
Answer: Bitewing radiograph
Bitewing radiographs provide the best view of interproximal alveolar bone levels in posterior teeth due to their ideal horizontal angulation.
Vertical (angular) bone defects on radiographs are characterized by:
Answer: Angular bone loss adjacent to one tooth root surface
Vertical angular bone defects appear as diagonal bone loss on one side of a tooth root rather than horizontal loss across adjacent teeth.
For a periodontal patient, when should full mouth periapical radiographs (FMX) be updated?
Answer: Based on clinical findings and disease activity
Radiographic frequency for periodontal patients should be individualized based on disease activity, clinical findings, and treatment response.
Which radiographic feature distinguishes an infrabony pocket from a suprabony pocket?
Answer: Position of the bone crest relative to the base of the defect
An infrabony pocket has its base apical to the alveolar bone crest, visible radiographically as bone loss below the pocket base level.