Week 8 Cariology Roles and Requirements of a Restoration Flashcards
(15 cards)
What is the biological role of a dental restoration?
Maintain health and integrity of:
* Pulp
* Supporting tissues
This role emphasizes the importance of preserving the health of the pulp and surrounding tissues when restoring teeth.
What are the mechanical roles of a dental restoration?
Repair existing tooth damage and arrest/prevent further destruction
Restore normal function as part of the masticatory system
Restore aesthetics (especially anterior restorations)
A perfect mechanical restoration fails if pulp or supporting structures degenerate.
What is the pre-operative assessment’s purpose in cavity preparation?
Assess and address pulp and tissue health before preparation
This step ensures that any existing issues are managed before the restoration process begins.
What can cause pulpal irritation during cavity preparation?
Inflammation caused by bacterial by-products
This irritation is usually mild and reversible unless the pulp is directly involved.
What are the mechanical and thermal irritants during cavity preparation?
Irritation depends on technique
* Dentin cutting
* Heat
* Dentin dehydration
* Mechanical pulp exposure
* Caustic drugs?
These factors can lead to varying degrees of pulp irritation.
What should be minimized to avoid unnecessary damage during cavity preparation?
Avoid unnecessary cutting of dentin
* Virgin dentin lacks defense
* More sound dentin cut → more pulp irritation
The width and depth of cuts matter significantly in preserving pulp health.
What factors contribute to heat production during cavity preparation?
Bur speed, pressure, contact time
* High speed >200,000 rpm, low speed <12,000 rpm
* Bur size, shape, composition
Pulpal damage increases with pressure; a light, intermittent touch is desirable.
How should water coolant be applied during cavity preparation?
Water coolant must contact tooth directly to be effective
This ensures that the tooth remains cool and reduces the risk of pulpal damage.
What should be avoided to prevent dentin dehydration?
Air blasts displace odontoblastic nuclei
Use of rubber dam to avoid desiccation
Maintaining moisture is crucial for pulp health during procedures.
What are the requirements for a good restoration following cavity preparation?
Good marginal seal
Good marginal adaptation and contours
Good occlusal contours
These factors help prevent pulpal irritation and recurrent caries.
What are the considerations for restorative materials?
Protect pulp from restorative materials that are irritating
Consider additional benefits (e.g., anticariogenic effects)
The choice of material can significantly impact the success of the restoration.
What are the strength and wear resistance requirements for restorative materials?
Must withstand function without fracture or wear
Stability against chemical/physical/bacterial challenges
Insoluble, corrosion/tarnish-resistant
Minimal dimensional change
The oral environment is harsh, and few materials meet all these needs.
What is the function of a restoration at an individual tooth level?
Minimize stress concentration and protect cusps
Restore the tooth to normal, pain-free function
This ensures the restoration contributes effectively to the overall masticatory apparatus.
Fill in the blank: A restoration should restore aesthetics, especially for _______.
[anterior teeth]
Aesthetics are a crucial consideration in dental restorations.
True or False: A perfect mechanical restoration can fail if the pulp or supporting structures are not healthy.
True
The integrity of the underlying structures is essential for the longevity of the restoration.
