A condition where there is loss of interdental bone on facial and lingual plate, without involvement of radicular bone is:
Correct Answer: Reverse architecture
Description: Reversed Architecture
Reverse (or negative) alveolar bone architecture is the result of a loss of interdental bone, without a concomitant loss of radicular (buccal or lingual/palatal) bone, thereby reversing the normal (or positive) architecture . Negative architecture is more common in the maxilla of patients with periodontitis.
Ledges
Ledges are plateau-like bone margins that are caused by the resorption of thickened bony plates .
Osseous Craters
Osseous craters are a specific type of two-wall defect; they present as concavities in the crest of the interdental bone that is confined within the facial and lingual walls. Craters have been found to make up about one-third (35.2%) of all defects and about two-thirds (62%) of all mandibular defects; they occur twice as often in posterior segments as in anterior segments.
Ref: Newman and Carranza’s Clinical Periodontology, thirteenth edition; page no 325
Category:
Dental
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