DENT 1200 Dental Materials I Lesson 2 Composite

Main Objective of Restorative Dentistry Restore is to replace or bring back to natural appearance and function. Esthetics means pleasing in appearance.

RESTORATIONS DIRECT Done in mouth Amalgam- ______ Composite- ______ GI- ____________ INDIRECT Done on cast in lab FIXED REMOVEABLE Crown full denture Bridge partial denture Implant Inlay,onlay veneer (casting)

Composite Esthetic

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8. 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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1. 4 Brand names Complete list at Adaptic by Johnson & Johnson Concise by 3M/ESPE Fuji by GC America Prisma by LD Caulk/Dentsply Heliomolar by Vivadent

2. 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)

2. Flowable Composites

2. Composition Resin Matrix- fluid base, BISGMA, dimethacrylate Fillers- quartz, glass, silica microfilled, macrofilled, hybrid Coupling agent- silane

3. 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

3. Mix/Dispense 2 paste- mix equal amounts Dispense- pass syringe or extrude sm amount from syringe onto pad In general- keep covered until use

4. Finish Remove excess/flash scalpel Trim with sandpaper strip, sandpaper disk on mandrel or diamond finishing bur

4 Finishing

4. Post Op Material is fully set Be careful if area is numb Tooth may be temperature sensitive( cold)

5. Shelf Life Follow manufacturers expiration date Shorter shelf life/ use life than amalgam Store in refrigerator

6. Cost

7. Light Cure VS self cure Polymerization- chemical set

9. Safety Do not allow acid to touch patient tissues!!!!! Do not look into the curing light!!!! Shields are available

10. Vocab Most contained in presentation Celluloid Strip/ Mylar strip- anterior, replaces matrix, keeps materials from touching adjacent teeth

Shade Guide

The End