Principles of Cavity Preparation Flashcards
what three aspects determine cavity design
structure and properties of dental tissues
dental disease
properties of restorative material
what four areas can caries present
pits and fissures
approximal
smooth surface
root
describe properties of enamel
brittle
has prisms
unsupported enamel should be removed before restoration
describe properties of dentine
dentine-pulp complex involved
what are the properties of caries removal
identify and remove carious enamel
remove carious enamel to level of ACJ and make sure clear margins
remove peripheral caries in dentine
remove deep caries over pulp
modify the cavity
internally design
give three reasons why healthy tooth tissue may be removed
material required for restoration requires it
margins of the cavity are in contact with another tooth surface
margins of the cavity cross an occlusal contact
what is a cavo-surface margin angle
the angle at which the outside of the tooth meets the inside of the cavity
name four advantages of composite
aesthetics
conservation of tooth tissue
support for remaining tooth tissue
low thermal conductivity
name two advantages of amalgam
less moisture technique sensitive
strong under occlusal load
how does retention allow amalgam to be kept in the cavity
the internal dimensions of the cavity have to be greater than the access into it
name five factors that could affect the amount of carious dentine removed
patient caries risk
pulp viability and sensibility
pulp proximity
remaining coronal tooth structure
material used
