Oral Surgery · single question
How does the MANDIBULAR RESIDUAL RIDGE resorb after tooth extraction?
Show answer and explanation
Correct answer: C. Downward and anteriorly (centrifugally — outward)
✓ C) Mandibular ridge resorbs DOWNWARD and ANTERIORLY (centrifugal resorption).
Ridge resorption patterns: MAXILLA: resorbs centripetally (inward/upward/posteriorly) → maxilla becomes SMALLER → class III jaw relationship tendency over time. MANDIBLE: resorbs centrifugally (outward/downward/anteriorly) → mandible appears BROADER and lower → progressive relative prognathism. Clinically: as both arches resorb, the relationship reverses — maxilla shrinks while mandible appears to grow forward/out → pseudo-Class III occlusion in complete denture patients. This pattern affects denture base extensions and stability over time.
Ridge resorption patterns: MAXILLA: resorbs centripetally (inward/upward/posteriorly) → maxilla becomes SMALLER → class III jaw relationship tendency over time. MANDIBLE: resorbs centrifugally (outward/downward/anteriorly) → mandible appears BROADER and lower → progressive relative prognathism. Clinically: as both arches resorb, the relationship reverses — maxilla shrinks while mandible appears to grow forward/out → pseudo-Class III occlusion in complete denture patients. This pattern affects denture base extensions and stability over time.