1. DA 122 Dental Materials

2.  Permanent cementation of {luting} ◦ Crowns, inlays, bridges, ◦ ortho appliances  Base {base}  Liner

3.  Primary consistency: ◦ Luting ◦ Thin, creamy  Secondary consistency: ◦ Base ◦ Thick, pastelike

4. Type I Cementation of crowns and bridges Orthodontic bonding Pit and Fissure sealant PRIMARY CONSISTENCY Type II Class III and V restorations (interproximal and gumline) Pediatric restorations PRIMARY CONSISTENCY Type III Liner and dentin-bonding agentPRIMARY CONSISTENCY Type IV Combined with amalgam for crown and core build-ups SECONDARY CONSISTENCY

5.  Very high in strength. Provide: ◦ Insulating protection ◦ Low solubility ◦ Prevention against decay (contain fluoride)

6.  Beneficial feature of glass ionomer cements:  Fluoride-releasing base ◦ Protection against decay  Chemically bonds to enamel or dentin  Adheres to wet tooth structure

7.  Cement-luting: ◦ 2 drops of liquid to 1 scoop of powder ◦ 2:1  Base-thicker consistency: ◦ 1+: 1 ◦ 1+ scoop powder: 1 drop liquid

8.  Cement spatula  Treated 3x3 paper pad  Liquid bottle  Powder and scoop  Plastics filling instrument OR disposable syringe for application  Note: this product can be supplied in pre- measured capsule, mixed in amalgamator

11.  Water, immediately  Ultrasonic cleaner with temp cement remover solution, if material is set

12.  Before mixing product, tooth needs to be: ◦ Pumiced with non-fluoride paste ◦ Acid etch (10 – 30 seconds) ◦ Rinse with water (30 seconds) ◦ Air dry but do not dessicate; slight moisture needed to prevent later tooth sensitivity  Mix and place glass ionomer cement or base

13. Mix timeWork timeSet time Cement45 – 60 seconds3 ½ minutes7 minutes Base30 seconds3 minutes7 minutes Liner10 – 20 secondsLight-cure

14.  Glossy, ½ inch string

15.  Ketac-Cement (we use this brand)  Sho-fu  Vitramer  Vitrebond

16.  http://www.youtube.com/watch?v=BGw2PnD A8YI http://www.youtube.com/watch?v=BG w2PnDA8YI Copyright 2012 Porter & Chester Institute, Inc. All rights reserved