-
What are the uses of dental waxes?
boxing impression, bite registration, making of die, hold things together
-
What is the composition of waxes?
Natural (plants, insects, minerals), synthetic (oils and fats)
-
What is melting range?
temperature at which each component of wax will soften and flow
-
What is flow?
Wax moves over on material
-
What is the classification of waxes?
Pattern, processing, impression
-
What is pattern wax?
inlay, casting, base plate
-
what is processing waxes?
boxing, utility, sticky
-
What is impression waxs?
corrective, bite registration
-
What is the use of Impression Material?
Reproduce oral cavity and hard/soft tissue
-
What are the classification of Impression Materials?
Elastic, Rigid
-
What are the classifications of Elastic Impression?
Irreversible, Reversible
-
What are the different types of Impression Trays?
Quadrant, mesh, metal, plastic, water cooled, custom
-
What is a negative impression?
The original impression
-
What is a positive impression?
stone poured impression
-
What is a cast/model?
stone
-
What is a die?
Single tooth crown
-
Polyvinle
- -Irreversible
- -Hydrophilic
- -Things Needed: impression tray, delivery system
- -Insert it into delivery system
- -Brand Name: Express
- - no pouring, storeing it doesnt matter
-
Rubber Base (Polysulfide)
- -Irreversible
- -Hydrophobic
- -Composition: Polysulfide = dentures
- -Things Needed: custom tray, diamond head spatila, onion pad, tongue blade
- -Manipulation: insert in tray and place in mouth. injection is crown and bridge
- -Brand Name: Rubber Base
-
Alginate
- -Irreversible
- -Hydrophilic
- -Composition: agar (sea weed), potatsium sulfate
- -Things Needed: metal tray, beaver tail, rubber powder, water, vile, bowl
- -Manipulation: powder into liqud
- -Brand Name: Gel Trate
-
Hydrocolloid (Agarloid)
- -Reversible
- -Hydrophobic
- -composition: agar, borax, potassium
- - things needed: unit, 18 gauge needed
- -name of unit: Hydrocolloid Conditioning Unit
-
Baths/Times/ Temps of Hydrocolloid
- 1. liquifing 212 degrees
- 2. storing 150 degrees
- 3. tempory 110-115 degrees
-
What tray is needed for Hydrocolloid?
Water cooled Rimlock
-
What are the phases of Material?
Sol, Gel, sol
-
Rigid Impression Material
- -Composition: thermal plastic
- -uses: hold things together, bite registration, die
- -how material comes supplied: cake, compoud (stick)
- -can be softened by flame or hot water
-
What is Gypsum?
made from anything from Earth (rock,stone)
-
What is the Chemical Properties of Dihydrate?
CAS04-2H20
-
What is the chemical property of hemihydrate?
CAS04-1/2H20
-
What are the classifications of gypsum products?
impreesion plaster, model plaster, dental stone, high strength, high expansion
-
What is the manipulation of gypsum products?
powder into liquid with a specific bowl
-
What is the setting order?
inital, final, working
-
What are the methods of pouring casts?
double, single, boxing
-
What does reversible mean?
can go back to original state
-
what does irreversible mean?
cant take material back to original state
-
what does elastic mean?
will flow easier and does pick up undercuts
-
What does rigid mean?
doesnt pick up undercuts
-
What does hydrophilic?
Does not mind water
-
What does Hydrophobic mean?
Does not like water
-
What is the size of Maxiallary trays?
1-5 (one being the largest)
-
What is the size of Mandibular trays?
20-25 (20 being the largest)
-
What tray does Poly Sulfide use?
Custom
-
What tray does Poly Vinyl use?
stock, disposable, tri-tray
-
What kind of tray does Alginate use?
metal, disposable, stock
-
What is the purpose of sealants?
to seal non carrious pits and fissures for primary and permanent teeth. prevents cavities and dental decay
-
What is polymerization?
the way the chemican sets
-
What is light activated?
light cured- 1 component apply to tooth and activate by light
-
What is Chemical activated?
self cure- usually 2 compnents and room light
-
what is the composition of sealants?
bis-GMA, UDMA
-
What is the working time of sealants?
- self cure- 2 minutes
- light cure- 20 seconds
-
What is the placement order of sealants?
- 1. throughly clean the surface of tooth with non floralated tooth (pummus)
- 2. rings tooth, clean pummus off
- 3. dry tooth
- 4. apply acid edjent material for 60 seconds.
- 5. rinse tooth
- 6. throughly dry tooth
- 7. apply sealant material
- 8. cure
- 9. check occlusal portion of tooth
-
What are the types of sport mouth guards?
stock, boil and bite, custom made
-
What gage of material do you use for sporth mouth guards?
.080
-
What is the procedure for fabriciation for sport mouth guards?
taking alginate impression, pour stone case, fabricate for mouth guard
-
What are the different types of material bite guards come in?
hard arycllic, hard/soft lamenents, and thermal plastic sheets
-
What is the procedure for fabrication of bite guards?
take alginate impression, pour stone cast, but must be sent to lab for fabriciation because the matieral is so hard.
-
how do bleaching trays work?
Whitents teeth, 97& of enamel is minders, proxides or non-proxides agents
-
What are the types of stains?
hydrogen proxide, carbon proxide, non hydrogen proxide systems, urea peroxide
-
True/False. Stains that are yellow/brown are easier to bleach then blue/gray or black stains.
True
-
What are the types of bleaching procedures?
home bleaching, in-office, non vitle teeth
-
What is home bleaching?
10-22% carbon peroxide with a custom tray, wear 30 minutes twice a day
-
What is in office bleaching?
45 minutes to an hour. 35% carbonbind peroxide with high intensity light-light causes sensitivity
-
What is non vitle teeth bleaching?
teeth w/ root canal- toothe must be opened again and solution goes in it to lighten it back up
-
What are the steps in fabrication of bleaching trays?
- 1. take good impression
- 2. pour in stone (microstone)
- 3. place seperating medium on teeth called Block Out
- 4. fabricate a mouth protector
-
What size material do you use for bleaching trays?
.040
-
What are the classifications of restorative materials?
intermediate, temporary, permanent
-
What does intermediate mean?
between restoration and tooth
-
What does temporary mean?
short duration
-
What does permanent mean?
long duration
-
Zoe B&T
- - comes in powder and liquid
- -manipulate by 1:1 powder into liqud
- - uses: sedative base,, thermal instilator on top of base b/c it prevents sensitivity
-
IRM
- comes powder and liquid.
- composition: powder (zinx oxide) liquid (uginal)
- 1:2(drops)
- uses: temporary restoration
-
Temp Bond
- comes: congel
- compostion: congel form has catalyst and base
- uses: temporary cement, creamy consistincy
- only one that acts as a cement
-
What is Alloy?
mixture of two or more metals
-
What is Amalgam?
restorative material that is composed of silver based alloy mixed with mercury
-
What is the composition of amalgam?
- 40-50%= silver content(strength)
- 12-30%= tin(physical properties)
- 10-30%=copper(hardness)
- 0-2%=oxidation
-
Safe lever in 40 hr work week:known as the threshold limit value (TLV):
0.005 mg/m3
-
Equipment used to mix amalgam is called an:
Amalgumator
-
The act of mixing amalgam is called:
turoration
-
What are the types of mixes for amalgam?
- under triturated (dry and crumbly)
- properly triturated (satin like)
- over mixed(to wet)
-
What is bringing to a uniform mass mean?
mulling
-
How does amalgam come supplied?
powder, tablet, prepackaged
-
What are the spills for amalgam?
- single spill=400mg
- 2 spill=600 mg
- 3 spill= 800mg
-
What is the ratio for Ketac Bond?
1:1
-
What is the ratio for Bitrebond?
1:1
-
Resin Base
- Brand Name: Maxem
- Supplied: single system, syringe
- composition: resin base (fluorides)
- manipulated: put plunger, push, mixes
-
Glassionomers
- auto cured
- brand name: Keytascem
- supplied: powder/liquid, capsul
- compostion: varies
- manipulated:1:3(drops) bring in my 1/3
-
Fugi
- supplied: powder/liquid, capsule, clicker
- manipulated:1:2(drops) bring in my 1/2
- *mix on glossy pad with certain spatula
-
Relie X
- Brand name:Vitremere
- light senstitive
- manipulated: 2:2
-
Zinx Poly
- Brand name: durelon
- supplied: powder/liquid and syringe
- composition: zinx oxide(pwdr) poly arclyic acid w/ h20 co-palmer(liquid)
- 1:1 cal
-
Zinc Phosphate
- supplied:powder/liquid
- composition: zinc oxide(pwdr) phosphoric acid (liquid)
- manipulated: 1mound:8(drops)
-
What are the classifications of gold?
biocapability, solders, metals used in ortho, implant materials
-
what does Pt stand for?
platinum
-
what does Pd stand for?
pladiu,
-
what are primary base metals?
copper, nickel, silver, zinc, tin, titanium
-
What is more compatable with oral tissue but tend to corrode?
Nobile metals (biocapatibility)
-
Women have allergies to what 10:1 over men?
Nickel
-
What are the base metals added to nickel chromal alloys?
Beryllium (biocapatibility)
-
What is an alloy used to join metals together?
solders
-
What are formed after a metal cast has been made - bendable to desired shape - partials?
wrought metals
-
What reacts with inorganic filler organic matric which causes the materials to adhere to each other?
silane coupling agent
-
What is the measurment of gold content?
Karat
-
What is the percent of gold times 10?
fineness
-
What are symetrical to the midline?
anterior borders
-
What are parallel to the buccal surface of the posterior teeth?
Lateral borders
-
What are parallel to the opposite cuspid?
Posterior Corneres
-
What are square with the midline?
Posterior Borders
-
What are the parts of the Model Trimmer?
Grinding wheel, casing, platform
|
|