Intro to RD (1)
What INTERNAL wall is perpendicular to the long axis of the tooth?
What is the pulpal wall
What is a working interference?
Interference between 1 supporting cusp and 1 non-supporting cusp
For what tooth is a perpendicular pulpal floor to the long axis of the tooth likely to cause a pulpal exposure?
Mandibular first premolar
When polishing an amalgam restoration, the dentist should use ____________.
What is intermittent light pressure
What two types of base/liners contraindicate with composite
IRM and Varnish
Are cavitated lesions capable of remineralizing?
No
A premature contact on a lingual facing slope of the maxillary buccal cusp would produce what shift of the mandible?
Lingual shift
A ____________ prevents the amalgam restoration from being dislodged proximally.
What are the two purposes of using an explorer after placing a Tofflemire matrix band for a class II restoration.
1. check for open contacts, band is snug against adjacent tooth
2. remove unsupported enamel and debris
In regards to pins what is the rule of 2's
2 mm of pin in the tooth
2 mm of pin size
2 mm of restoration on top of pin
When thinking about bladed instruments, when you have less blades (6-10 blades) do you have an efficient or less efficient cutting and is the surface smooth or rough?
What is efficient cutting with a rougher surface
If there is little overlap between the opposing incisors, with a "shallow protrusive path" of the condyles, would the posterior cusps need to be short or can be lengthened?
Short
Retention features can only be placed in _________.
What is dentin
A properly placed matrix band should be ______ mm above the marginal ridge and _____ mm below gingival cavosurface margin.
1 mm, 1 mm
GLUMA is used to prevent post cementation sensitivity. T or F
True
What is the purpose of an enameloplasty? And no more than X amount of enamel thickness should be removed.
To grind away and make pits and fissures less narrow/deep so they are more easily cleaned.
No more than 1/3 enamel thickness should be removed.
For anterior prematurities, adjust the lingual of the maxillary anteriors. Do not adjust the incisal edges of the mandibular incisors due to possibly altering phonetics or speech.
Statement 1 is:
Statement 2 is :
Both True
T or F: Root caries do not require retention features.
False
Double wedging is utilized when
wide proximal boxes (bucco lingually)
In a shallow/moderate preparation which is a better choice dycal or glass ionomer?
glass ionomer
What type of bur is a 36?
Inverted cone
What are the 2 requirements of stable occlusion?
1. stable stops on all teeth when condyles are in CR
2. stable stops on all teeth when teeth are in MIP
Locks are placed using a _______ or ________ bur.
What is a 169L or 1/4 round bur
Non-supporting cusps should be ___________ compared to supporting cusps from a restorative standpoint.
as tall or shorter
Affected Dentin