1 zinc phosphate cement da 122 dental materials da 122 dental materials
TRANSCRIPT
![Page 1: 1 Zinc Phosphate Cement DA 122 Dental Materials DA 122 Dental Materials](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649f065503460f94c1b02f/html5/thumbnails/1.jpg)
1
Zinc Phosphate Cement
DA 122Dental Materials
![Page 2: 1 Zinc Phosphate Cement DA 122 Dental Materials DA 122 Dental Materials](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649f065503460f94c1b02f/html5/thumbnails/2.jpg)
2
Common Uses
• Permanent cementation (luting)– Crowns, bridges– Inlays, onlays– Orthodontic bands and brackets
• Insulating Base
![Page 3: 1 Zinc Phosphate Cement DA 122 Dental Materials DA 122 Dental Materials](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649f065503460f94c1b02f/html5/thumbnails/3.jpg)
3
Special Properties
• Reliable• Exothermic reaction-mix on cool glass
slab• Bonds to tooth structure by
mechanical interlocking
![Page 4: 1 Zinc Phosphate Cement DA 122 Dental Materials DA 122 Dental Materials](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649f065503460f94c1b02f/html5/thumbnails/4.jpg)
4
Ratio
• Luting Consistency =• 1 measure of powder– Measure to “shoulder” of powder cap
• 6 drops of liquid• Base Consistency =– same ratio BUT add more powder to desired
thickness
![Page 5: 1 Zinc Phosphate Cement DA 122 Dental Materials DA 122 Dental Materials](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649f065503460f94c1b02f/html5/thumbnails/5.jpg)
5
Armamentarium
• Cooled glass slab-slows exothermic reaction• Cement spatula• 2 x 2 gauze square• Zinc phosphate powder• Zinc phosphate liquid• Plastics filling instrument
![Page 6: 1 Zinc Phosphate Cement DA 122 Dental Materials DA 122 Dental Materials](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649f065503460f94c1b02f/html5/thumbnails/6.jpg)
6
Zinc Phosphate Armamentarium
![Page 7: 1 Zinc Phosphate Cement DA 122 Dental Materials DA 122 Dental Materials](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649f065503460f94c1b02f/html5/thumbnails/7.jpg)
7
Dispensing zinc phosphate cement: 6 drops liquid to 1 cap powder
![Page 8: 1 Zinc Phosphate Cement DA 122 Dental Materials DA 122 Dental Materials](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649f065503460f94c1b02f/html5/thumbnails/8.jpg)
8
Dispensing anddividing powder
• Shake powder bottle to fluff, dispense 1 capful, then divided into 6 parts:
– Level powder to 1 mm of thickness
– Divide into 2 equal portions
– Divide each of these into quarters
– Then divide 2 sections into eighths
– Lastly-divide one of these into sixteenths.
![Page 9: 1 Zinc Phosphate Cement DA 122 Dental Materials DA 122 Dental Materials](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649f065503460f94c1b02f/html5/thumbnails/9.jpg)
9
Mixing
– Smallest increment should be brought into liquid first• 1/16th
• Mix for 15 seconds to totally incorporate powder into liquid• Continue adding small increments,
mixing slowly, wiping both sides of spatula
![Page 10: 1 Zinc Phosphate Cement DA 122 Dental Materials DA 122 Dental Materials](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649f065503460f94c1b02f/html5/thumbnails/10.jpg)
10
Mixing
• Use cooled glass slab w/ cement spatula
• Mix over large area of glass slab to keep material cool (controls exothermic reaction)-use figure 8 rotary motion when mixing
• Mix time: 2 minutes• Work time: 3 ½ minutes• Set time: 7 minutes
– Can be affected by cool temperature-takes longer to set
![Page 11: 1 Zinc Phosphate Cement DA 122 Dental Materials DA 122 Dental Materials](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649f065503460f94c1b02f/html5/thumbnails/11.jpg)
11
Figure 8 mix over glass slab
![Page 12: 1 Zinc Phosphate Cement DA 122 Dental Materials DA 122 Dental Materials](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649f065503460f94c1b02f/html5/thumbnails/12.jpg)
12
Clean-up
• Water (mixed with baking soda) + 2x2 gauze
• IMMEDIATELY prior to setting• If material has set, will need to use a temp
cement remover solution in an ultrasonic cleaner
• Discard unused powder left on mixing slab
![Page 13: 1 Zinc Phosphate Cement DA 122 Dental Materials DA 122 Dental Materials](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649f065503460f94c1b02f/html5/thumbnails/13.jpg)
13Luting = ½ - 1 inch string-elongation of material when lifted
![Page 14: 1 Zinc Phosphate Cement DA 122 Dental Materials DA 122 Dental Materials](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649f065503460f94c1b02f/html5/thumbnails/14.jpg)
14
Roll into ball for base
![Page 15: 1 Zinc Phosphate Cement DA 122 Dental Materials DA 122 Dental Materials](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649f065503460f94c1b02f/html5/thumbnails/15.jpg)
15
Appearance
• Luting = creamy
• Base = putty-like, rolled into a ball
![Page 16: 1 Zinc Phosphate Cement DA 122 Dental Materials DA 122 Dental Materials](https://reader036.vdocuments.net/reader036/viewer/2022062301/56649f065503460f94c1b02f/html5/thumbnails/16.jpg)
16
Common Brand Name
• Flecks
Copyright 2012 Porter & Chester Institute, Inc. All rights reserved