Prosthodontics & Occlusion · single question
What are the EARLY clinical signs of BRUXISM?
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Correct answer: B. Occlusal facets, masseteric hypertrophy, narrow PDL spaces, thickened lamina dura
✓ B) Occlusal facets, masseteric hypertrophy, narrow PDL spaces, thickened lamina dura.
Bruxism signs: (1) OCCLUSAL FACETS (attrition wear on occlusal surfaces — pathognomonic); (2) MASSETERIC HYPERTROPHY (chronic overuse → masseter and temporalis enlarge — NOT atrophy); (3) NARROW PDL spaces (hyperfunctional loading compresses PDL); (4) THICKENED lamina dura (bony response to excessive force); (5) Fractured restorations; (6) Cervical abfraction; (7) TMJ symptoms. NOTE: Muscle atrophy would mean disuse — the opposite of bruxism. Bruxism causes HYPERTROPHY of masticatory muscles.
Bruxism signs: (1) OCCLUSAL FACETS (attrition wear on occlusal surfaces — pathognomonic); (2) MASSETERIC HYPERTROPHY (chronic overuse → masseter and temporalis enlarge — NOT atrophy); (3) NARROW PDL spaces (hyperfunctional loading compresses PDL); (4) THICKENED lamina dura (bony response to excessive force); (5) Fractured restorations; (6) Cervical abfraction; (7) TMJ symptoms. NOTE: Muscle atrophy would mean disuse — the opposite of bruxism. Bruxism causes HYPERTROPHY of masticatory muscles.
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