Impressions
An impression form a ______ reproduction of the mouth.
The study model forms a ________ reproduction of the mouth.
negative
positive
What is the purpose of the vibrating table when pouring study models
removes any air bubbles that may be present
The curing light uses a ________ wave length.
blue
What kind of instrument is safe to use on dental implants?
Titanium
Why is orthodontics recommending by dental professionals?
-Esthetics
-helps prevent periodontal disease
What posterior oral landmark should a properly extended maxillary tray include
Hamular notch
Which part of the study model is the art portion? How much of the model should be the art portion?
The base. This should be only 1/3 of the total depth.
Whitening works by....
Passing through enamel to lighten the dentin.
the most commonly used in dentistry
Endosseous implants
List the benefits of having dentures.
-Esthetics
-aid in chewing which leads to proper digestion
-Fills out facial structures
-helps with speech
This is what happens when an alginate appears to 'sweat'
Syneresis
What are study models in dentistry used for?
-to determine treatment
-ortho progression
-to make bleaching trays/mouth guards
Bonding agents form projections that lock into the tooth create a _____ bond. The bonding agent will then form a _____ bond to other resins placed over it.
mechanical; chemical
Define what an immediate-placement surgical procedure means
implant fixture is placed directly into the socket with a bone graft after the extraction of a tooth
How do you clean and store an occlusal guard?
clean with mild soap and water, let air dry, store in a ventilated container away from any pets
What kind of material is alginate
irreversible hydrocolloid
When the model is trimmed down to make bleaching trays, a hole is formed on the palate. Why is this necessary?
to have adequate suction on the vacuum former
Teeth bleaching occurs when....
the bleaching material passes through the spaces in enamel and oxidizes the stains
Why is titanium used for dental implants?
they are lightweight, doesn't corrode, biocompatible
A sports guard can potentially absorb how much traumatic energy
80%
the incisal edges and cuspal tips should be how close to the surface of the tray.
1-2mm
List the steps in trimming a model. Be as specific as possible.
-start with maxillary model
-Trim back of model to about 3mm from the most posterior teeth
-Trim sides parallel with occlusal plane on left and right
-trim posterior corner to form the heel.
-trim anterior from canine to midline forming a point
-use upper model as template for lower, but rounding the lower anteriors from canine to canine.
What is the active ingredient in OTC bleaching?
in office bleaching?
-Carbamide peroxide
-Hydrogen peroxide
What would you use to clean an All on 4 implant prosthesis? describe how you would use each.
super floss, gauze, air/water syringe, proxy brush
-Thread super floss under it to clean around implants
-use guaze to wipe off appliance & wrap around the most posterior portion
-air/water to flush out underneath
-proxy brush to clean under appliance & around implants themselves
-place material in holder and lift to top
-place model in the center of vacuum former
-place heat lamp over material and turn on
-let material melt about 1/4-1/2 way down forming a bubble
-slide heat lamp way and turn off, turn vacuum on
-press material down allowing vacuum to remove any trapped air for about 5-10 secs
-remove, trim extra material away and around scallops of gingiva making sure there are no sharp edges.