Periodontics · single question
A single tooth recession (photo) — what is the most likely cause?
Show answer and explanation
Correct answer: A. Parafunctional habit (toothbrush abrasion/trauma)
Parafunctional habit — traumatic toothbrushing (A). Single-tooth, localized gingival recession (especially on a buccally prominent tooth with intact interdental papilla and no bone loss on adjacent teeth) is most commonly caused by traumatic toothbrushing:
• Horizontal scrubbing technique with a hard-bristled brush
• Excessive force during brushing
• Classically affects the facial/buccal surface of maxillary canines and premolars (exposed, prominent teeth)
• Periodontitis (B): causes GENERALIZED or pattern-specific recession with bone loss — not single isolated recession. Accompanied by attachment loss, calculus, etc.
• Abrasion (C): dietary abrasion causes wear facets on cusps/incisal edges, not gingival recession.
• Treatment: soft toothbrush, modified Bass technique, possible connective tissue graft.
• Horizontal scrubbing technique with a hard-bristled brush
• Excessive force during brushing
• Classically affects the facial/buccal surface of maxillary canines and premolars (exposed, prominent teeth)
• Periodontitis (B): causes GENERALIZED or pattern-specific recession with bone loss — not single isolated recession. Accompanied by attachment loss, calculus, etc.
• Abrasion (C): dietary abrasion causes wear facets on cusps/incisal edges, not gingival recession.
• Treatment: soft toothbrush, modified Bass technique, possible connective tissue graft.