ABO ABO Periodontics and Interdisciplinary Treatment

Question 1

Orthodontic tooth movement is contraindicated in areas with active periodontitis primarily because:

Accepted Answer

Moving teeth through infected periodontium accelerates alveolar bone loss

Answer

Brackets cannot bond to periodontally involved teeth

Answer

Periodontal ligament fibers interfere with bracket placement

Answer

Gingival recession always causes root exposure

Question 2

Orthodontic intrusion of an overerupted tooth with chronic periodontitis can help by:

Accepted Answer

Reducing the infrabony defect depth and improving the osseous topography

Answer

Eliminating the need for periodontal surgery entirely

Answer

Increasing clinical crown length

Answer

Eliminating pocket depths immediately

Question 3

Before starting orthodontic treatment in a patient with a history of periodontitis, the MOST important prerequisite is:

Accepted Answer

Achievement of periodontal stability (BOP < 20%, controlled disease)

Answer

Completion of all restorative work

Answer

Extraction of third molars

Answer

Whitening of anterior teeth

Question 4

Patients with a thin gingival biotype are at higher risk for which complication during orthodontic treatment?

Accepted Answer

Gingival recession, especially when moving teeth facially

Answer

Accelerated dental caries

Answer

Ankylosis of posterior teeth

Answer

Enamel cracking during debonding

Question 5

Orthodontically forced eruption (extrusion) of a fractured tooth prior to crown placement serves to:

Accepted Answer

Bring the fracture margin supragingivally and develop bone/tissue for restorative margins

Answer

Increase alveolar bone density only

Answer

Accelerate root formation

Answer

Reduce root resorption risk

Question 6

The term 'biological width' in restorative-orthodontic interdisciplinary care refers to:

Accepted Answer

The combined dimension of the junctional epithelium and supracrestal connective tissue attachment

Answer

The thickness of the alveolar bone plate

Answer

The distance between adjacent tooth contacts

Answer

The thickness of the gingival margin