ABO Periodontics and Interdisciplinary Treatment Flashcards
6 cards from real ABO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 ABO Periodontics and Interdisciplinary Treatment flashcards as text
Orthodontic tooth movement is contraindicated in areas with active periodontitis primarily because:
Answer: Moving teeth through infected periodontium accelerates alveolar bone loss
Active periodontal infection in the alveolar bone combined with orthodontic forces accelerates bone resorption, worsening the patient's periodontal prognosis.
Orthodontic intrusion of an overerupted tooth with chronic periodontitis can help by:
Answer: Reducing the infrabony defect depth and improving the osseous topography
Intrusion of periodontally involved over-erupted teeth can improve infrabony defect geometry, making subsequent periodontal surgery more predictable.
Before starting orthodontic treatment in a patient with a history of periodontitis, the MOST important prerequisite is:
Answer: Achievement of periodontal stability (BOP < 20%, controlled disease)
Periodontal stability with minimal bleeding on probing confirms that active infection is controlled, making it safe to initiate orthodontic forces.
Patients with a thin gingival biotype are at higher risk for which complication during orthodontic treatment?
Answer: Gingival recession, especially when moving teeth facially
Thin gingival tissue has reduced capacity to withstand orthodontic forces, making facial tooth movement more likely to cause gingival recession.
Orthodontically forced eruption (extrusion) of a fractured tooth prior to crown placement serves to:
Answer: Bring the fracture margin supragingivally and develop bone/tissue for restorative margins
Forced eruption brings the fracture line coronal to the alveolar crest and gingival margin, providing adequate tooth structure and biological width for a crown.
The term 'biological width' in restorative-orthodontic interdisciplinary care refers to:
Answer: The combined dimension of the junctional epithelium and supracrestal connective tissue attachment
Biological width (~2 mm) is the physiologic space occupied by the junctional epithelium (~1 mm) and supracrestal connective tissue (~1 mm) that must be respected by restorative margins.