Which of the following are components of the outline form?
.5mm into dentin
1mm FL width
FL walls slightly acute
integrity of marginal and oblique ridges when decay is not present
Which of the following lesions would be considered a Class I?
Occlusal surface of #19
Lingual of 9 on cingulum
Occlusal of 13
Facial groove of 31
Decay on facial surface, apical 1/3rd of 3
Which the of the following are components of the primary resistance form?
smooth pulpal floor
obtuse mesial and distal walls if present
acute facial and lingual walls
integrity of marginal and oblique ridges
removal of unsupported enamel
The purpose of resistance form it to resist the forces of mastication in order to prevent fracture of remaining tooth and the restorative material used. Convenience form allows for modification of the ideal outline form to ensure removal of all decay.
T/T
T/F
F/T
F/F
The cavosurface finish for amalgams are always 90 degree butt joints. Minimum depth for amalgam is always 1.7mm, even if that means exceeding .5mm into dentin.
Which of the following are internal walls?
pulpal
axial
mesial
distal
lingual
The axial wall is perpendicular to the long axis of the tooth. The pulpal wall is parallel to the long axis of the tooth
Which of the following is not an objective of tooth preparation?
Esthetics and color
removal of defects
conservation of natural structure
withstand forces of mastication
functional placement of restorative material
Which of the following are benefits of using a rubber dam?
Moisture control
Reduction of contamination
Prevention of aspiration/swallowing of foreign bodies by patient
Patient cannot talk to you
Cheek retraction, protection of soft tissues
Why would you not use a rubber dam?
Patient phobia
Patient has a cold
Too many missing or broken teeth
Teeth are very crooked (malposed)
Patient has asthma
Order of removal of rubber dam?
cut interproximals, remove the rubber dam holder, then the clamp, then gingerly pull the dam off
cut interproximals, then remove the clamp with the rubber dam still attached to the holder as a single unit
cut interproximals, cut ligating floss, remove clamp, remove dam holder, then remove the dam
Remove the clamp, remove the holder, then pull the dam off
It doesn't really matter. Do whatever as long as you leave no dam behind.
The rubber dam clamp jaws must go below the height of contour. The bow faces anteriorly.
