2. Pulp capping
Pulp capping is a process of placing a specialized agent in
contact with or in close proximity to the pulp with the
intention of encourage the formation of new
dentine(secondary dentine) and promote the healing of the
pulp.
3. Criteria of pulp capping
The pulp should be healthy and uninfected
The area of the exposure not more than o.5 mm
5. Base
Base is the material which applied over the pulpal axial wall and act as
a substitute for lost dentine. The thickness of the base depends upon the
amount of dentine lost.The total bulk(dentine+base) should be at least
2.omm
6. Zinc phosohate cement
use:
1.permanemt cement for indirect restorations including inlays,
onlays , crowns and bridges
2.orthodontic cement
3.high strength base
7. Poly carboxylate cement
Use:
1.used as a permanent cement for cast restoration, stainless
steal crowns and orthodontics band
2.use as a non irritating base under both composite and
amalgam restoration
3.used as intermediate restoration
8. Liner
The term liner used for those materials which can be applied to a cavity
surface in a relatively thin film . The thickness of the liners usually does
not exceed 0.1mm.
All the material use as bases can be used as liner
9. Calcium hydroxide
advantage
Antibacterial protection
Pulp protection
The tissue dissolving property
Newer property show improved
strength essentially no solubility in
acid
disadvantage
Pulp obliteration
Internal resorption
Lack of adhesion on hard tissue
Micro leakage
11. GI cement
Use:
1.used as a restorative material and as a dentin liner.
2.calcium glass ionomers release fluoride, have the ability to bond
and strengthen
12. Zinc oxide eugenol
Use :
1.pulp capping agent
2.for temporary filling
3.for temporary and permanent restoration
4.secondary use – root canal restoration
13. Varnish
For shallow cavities , cavity varnish can be applied on the walls
especially in silver amalgam and cast gold restoration. however
in composite and glass ionomers the application of cavity
varnish is avoided.
Function :
1.prevent micro leakage
2.reduce post operative sensitivity
3.it does not act as a insulator
14. Recent pulp capping material
MTA: mineral trioxide aggregate
Hydroxyapatite
Collagen
Poly carboxylate cement
Biodentine
15. MTA – Mineral trioxide aggregate
Advantage
Antimicrobial activity
Prevent micro leakage over vital
pulp
Non toxic
Dental bridge formation
Disadvantage
Long setting time
More difficult to manipulate
17. BIODENTINE
USE :
•Endodontic indications ( apexification , root-end filling)
•Permanent dentine substitute and temporary enamel substitute
•Restoration of deep or large crown carious lesions
•Direct pulp capping in adults presenting healthy pulp
19. reference
Textbook of operative dentistry
- Nisha garg
- Amit garg
Fundamental books of dental materials
-DR. Rowshan akter
Text book of operative dentistry
-Vimal k Sikri
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