dental composite

2. HAFSA JAMIL
ROLL # DO563-14
2ND YEAR B.DS

3. PRESENTATION TOPIC: STEPS
OF COMPOSITE RESTORATION

4. 1. Isolation
2. Etching /Conditioning
3. Washing /Drying
4. Bonding
5. Curing
6. Determine shade
7. Incremental buildup & curing of composite
8. Finish/polish

5. Composite is a highly technique sensitive
material
Slight contamination or procedural error
spoils the durability of the restoration
Perfect isolation of operating area is
mandatory
The best isolation is rubber dam .

6. Enamel
Dentin
Both the tissues are etched
with Phosphoric acid.

7. To cut into the enamel surface through the
action of acid
After washing

8. 34- 37 % phosphoric acid
Liquid Gel

9. Roughens the surface by removing calcium
from enamel .we apply etchant on enamel
for 30 seconds and on dentine for 15
seconds.

10.  Washing is performed with
triple syringe for 5-10
seconds and then drying

11. Bonding agents are unfilled resins that flow
into the micro channels and form an
interlocking system.
It is available in liquid form

12. Apply bonding
agent with help
of a small brush

13. 20 seconds

15. If after cavity preparation the remaining
dentine thickness (RDT) is between 0.5
and 1.5mm a resin modified glass ionomer
(RMGI) base is used. IF RDT is less than
0.5mm a calcium hydroxide liner should be
applied to the deepest aspect of the
preparation then protected with an RMGI
base prior to adhesive placement .

16.  It is important to place the composite
incrementally to maximize the polymerization
depth of cure and possibly to reduce the negative
effects of polymerization shrinkage.
 Cure each increment for 20 sec.

17. Tungsten carbide finishing bur is used to
contour the marginal ridge

19. Art and Science of
OPERETIVE DENTISTRY
Sixth Edition
Page # 262, 263, 265.

20. Hope you all get it…