Pulp Protection Part I Flashcards
Define pulp protection therapy
the treatment that maintains pulp tissue in a healthy and functional state, whenever the dentin-pulp complex has been compromised by caries, trauma, or restorative procedures
What are the three different categories of pulp irritants
- microbial
- mechanical
- chemical
Two different diseases caused by microbial irritants that can damage the pulp are
- dental caries
- periodontal disease
Tooth preparation falls under what category of pulp irritants
mechanical (or operative)
The degree of plural reaction to operative procedures is dependent on what two factors
the amount of friction and desiccation
How can tooth preparations lead to plural damage
frictional heat generated by the drill can cause burn lesions in the pulp and access formation
what are the three different operative procedures that can cause pulpal damage
- Tooth preparation
- Orthodontics
- Periodontal curettage (scaling and root planing)
What is one mechanical (not operative!) irritant that can cause plural damage
trauma
What are the objectives of pulp protection therapy
- sealing the dentinal tubules
- Thermal protection
- Mechanical protection
- Chemical protection
- Electrical protection
Ideal pulp protecting agents should be (biologically/chemically) compatible
both
What are the ideal requirements of Pulp protecting Agents
- Biologically/chemically compatible
- Capable of forming a non-permeable layer on cut dentin with thickness, which does not affect the bulk or mechanical properties of a restoration
- The pulp protection material should not discolor either the tooth or restorative material
- The material should attain the hardness quick enough to allow the final restoration completed in adequate time
- It should have low solubility in oral builds
- Should have ease of use and manipulation during mixing and insertion
The best pulp protection is provided by what part of the tooth
the dentin
The remaining dentinal thickness (RDT) determines what
the effect of insult on pulp due to various irritants
The classification of pulp protection is based on what
the extent of the caries
What sorts of pulp protection should be employed for moderate carious lesions
- sealers
- liners
- bases
What sorts of pulp protection should be employed for deep carious lesions
- Direct pulp capping
- Indirect pulp capping
what is the difference between direct and indirect pulp capping
Indirect has less calcium-hydroxide than direct
what are the components of the direct and indirect pulp caps
- Composite filling
- Glassionomer lining
- Calcium-hydroxide
What are cavity sealers
materials that provide a protective coating to the walls of a prepared cavity and a barrier to leakage at the interface of the restorative material and the walls
What are the two types of sealers
tarnishes and adhesive sealers
What is a varnish sealer
a natural rosin or gum (copal) or synthetic resin, dissolved in an organic solvent (acetone, chloroform, or ether)
what is an adhesive sealer
provides sealing as well as bonding at the interface between the restoration and the preped walls
Varnish is composed of a solid and liquid component what are they
- Solid= copal resin
- Liquid= organic solvent (ether, acetone, or chloroform)
What are the indications (or the positives of) for varnish sealer
- Can be applied to every prepped all to prevent post operative sensitivity and discoloration of the tooth
- Apply on the pulpal floor under zinc phosphate cement to prevent acid penetration
