DENT 5102, Fall 2007 Unit 2. Restorative Materials Unit 3. Dental Caries.
DENT 1200 Dental Materials I
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Transcript of DENT 1200 Dental Materials I
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DENT 1200 DENT 1200 Dental Dental
Materials IMaterials ILesson 2 CompositeLesson 2 Composite
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Main Objective of Restorative Main Objective of Restorative DentistryDentistry
• Restore is to replace or bring back to natural appearance and function.
• Esthetics means pleasing in appearance.
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RESTORATIONSRESTORATIONS• DIRECT Done in mouth Amalgam-______
Composite-______
GI-____________
• INDIRECT Done on cast in lab
FIXED REMOVEABLE Crown full dentureBridge partial dentureImplantInlay,onlayveneer (casting)
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CompositeCompositeEstheticEsthetic
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VOCABVOCAB
• Bondinghttp://www.ada.org/public/media/videos/minute/cosmetic_bonding_broadband.wmv
Fracture
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8. Acid Etch8. Acid Etch• After liner is placed- tooth is etched
with phosphoric acid for 1 minute to create tags for micromechanical retention
tags
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ADA on CompositeADA on Composite• http://www.ada.org/public/media/vide
os/minute/cosmetic_composite_broadband.wmv
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1. 4 Brand names1. 4 Brand names• Complete list at
www.dentalcomposites.com• Adaptic by Johnson & Johnson• Concise by 3M/ESPE• Fuji by GC America• Prisma by LD Caulk/Dentsply• Heliomolar by Vivadent
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2. Use and forms2. Use and forms• Composite resin
cement- perm luting
• Direct esthetic perm rest ( ant & post)
• 2 paste ( LC or self cure)
• Single paste in syringe or compule that goes in a syringe ( LC only)
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2. Flowable Composites2. Flowable Composites
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2. Composition2. Composition• Resin Matrix- fluid base, BISGMA, dimethacrylate • Fillers- quartz, glass, silica microfilled, macrofilled, hybrid• Coupling agent- silane
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3. Mix/Dispense3. Mix/Dispense• Select shade before prep• Prep• Liner if needed- no ZOE• Matrix- ant/ celluloid post/ toff• Etch rinse Prime dry Adhesive LC• Composite- LC
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3. Mix/Dispense3. Mix/Dispense• 2 paste- mix equal amounts• Dispense- pass syringe or extrude
sm amount from syringe onto pad
• In general- keep covered until use
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4. Finish4. Finish• Remove
excess/flash scalpel
• Trim with sandpaper strip, sandpaper disk on mandrel or diamond finishing bur
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4 Finishing4 Finishing
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4. Post Op4. Post Op• Material is fully set• Be careful if area is numb• Tooth may be temperature sensitive(
cold)
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5. Shelf Life5. Shelf Life• Follow manufacturers expiration date• Shorter shelf life/ use life than
amalgam• Store in refrigerator
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6. Cost6. Cost
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6. Cost6. Cost
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7. Light Cure VS self cure7. Light Cure VS self cure• Polymerization- chemical set
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9. Safety9. Safety• Do not allow acid
to touch patient tissues!!!!!
• Do not look into the curing light!!!!
• Shields are available
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10. Vocab10. Vocab• Most contained in presentation• Celluloid Strip/ Mylar strip- anterior,
replaces matrix, keeps materials from touching adjacent teeth
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Shade GuideShade Guide
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The EndThe End