ABO Periodontics and Interdisciplinary Treatment Flashcards

An orthodontic patient develops localized gingival enlargement (fibrous hyperplasia) around brackets. The FIRST step in management is:

Answer: Improved oral hygiene instruction and professional plaque removal

Plaque-induced gingival hyperplasia during orthodontic treatment is reversible with proper oral hygiene; improved hygiene should be the first intervention.

Root resorption during orthodontic treatment is most commonly detected using:

Answer: Periapical radiographs or CBCT

Periapical radiographs reveal root length changes due to resorption, and CBCT provides three-dimensional detail of root morphology and resorption extent.

Which orthodontic tooth movement has the highest risk of root resorption?

Answer: Upper incisor intrusion and torque

Upper incisor intrusion combined with palatal root torque applies prolonged apical forces that are strongly associated with external root resorption.

Gingivectomy prior to orthodontic treatment may be indicated for a patient with:

Answer: Gingival enlargement causing pseudopocket formation that impairs bracket placement

Enlarged gingival tissue can cover the clinical crown and interfere with bracket positioning, making pre-orthodontic gingivectomy beneficial.

When planning orthodontic treatment for a patient with missing teeth, the orthodontist must consider the restorative space requirements because:

Answer: Final space distribution determines restorative options (implant, bridge, or closure)

The amount and location of space created or maintained orthodontically must meet the biometric requirements for the planned restoration type.

Orthodontic tooth movement into a site of previous tooth loss with significant alveolar ridge deficiency may result in:

Answer: Fenestration or dehiscence if moved beyond the alveolar housing

Moving a tooth beyond the available alveolar bone envelope risks creating a fenestration (window in bone) or dehiscence (loss of facial bone plate).