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Denture base resins: PMMA, processing, repairs

Dental Materials · Dental (BDS)

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Study notes

Patient: Mrs. Sharma, 65, presents with a broken maxillary complete denture. Diagnosis: Midline fracture of the acrylic base due to heavy occlusal force. Treatment: 1. Repair surfaces are roughened with a bur (tapered fissure). 2. A 'dovetail' groove is cut across the fracture line to increase surface area for bonding. 3. The denture is stabilized on the original dental stone cast. 4. Self-cure PMMA resin is applied in a plastic state. 5. Curing is done in a pressure pot at 20 psi for 15 minutes to prevent porosity. Outcome: The denture is polished with a rag wheel and pumice. Follow-up: Checked after 24 hours for pressure points on the mucosa; denture fits perfectly.

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