St. Appolonia

- A dental fiber pencil made of wood rich in sodium bicarbonate

- soaked in water for 24 hours until the fibers unravel to form a soft brush.

Irene Newman

T or F:

 Periodontal dressings are indicated for most but not all, periodontal surgical procedures

T or F:

Periodontal dressing has curative powers

Two types of Periodontal Dressings:

- Zinc Oxide and Eugenol containing

- Non-eugenol containing

Zinc Oxide powder and Rosin

Eugenol

T of F:

Eugenol Containing dressings aren't used much anymore because of its negative affects

Eugenol once contained asbestos and tannic acid

T or F

-The small tube of non eugenol containing dressing is a ________.

-The Large tube is a __________

- the ratio = ?

catalyst

base

1:2

The Ideal Periodontal Dressing should be:

when mixing non eugenol dressings you should use _________ per sextant

and DO NOT let then to come in contact with each other until you are ready to begin mixing

When mixing non-eugenol dressings, the set can be accelerated by placing the mixture in:

Non-eugenol perio dressings should not extend beyond the ________________

- avoid unnecessary manipulation of the dressing or he surgical site

- dont try to look and see the surgical site, you may crack and dislodge the dressing and open wounds are very painful

- dont brush the dressing

T of F:

when placing a suture you start with the least attached tissue and pull toward the most anchored tissue

guy who designed a numbering system utilizing the metric system for instrument identification

instrument with blade or nib used to smooth out roughness of the restoration

- used to contour matrix band before placement and to contour stainless steel crowns

used to cauve occlusal anatomy

- ________ end is pointed

- ______________- end is disc shaped

originally used as a cutting instrument

used to maintain stability of the matrix band during condensation of the material

- used to replace missing proximal wall(s) of cavity preparation for condensation of restoritive material

- variety of sizes shapes and thickness

- used to cut or trim tissue

- usually disposable

- originally used to clamp severed blood vessels

- used to grab tissue, root, bone fragments and broken needles!

- motion conservation class that consrns only movement of the fingers

- thumb to nose

- modified pen grasp

plaster and stone are chemically ________, but physically _____________ forms of the compound calcium, sulfate 

- smooth the crystaline structure will be

- the more closer the crystaline structures are

- the denser the product

- less amount of water is needed to hydrate

plaster requires ________ water for wetting than stone.

the ratio for plaster is _____/100g

stone requires _________ water for wetting

the ratio is ___/100g

too much water __________- setting time

too little water ________ setting time

increases

decreases

type of plaster that is hard and brittle, it cannot be removed from undercuts of teeth and cannot be used with dentated individuals.

- least strongest material

type of plaster that has high strength and high hardness, W/P is very low which attributes to its high strength

the most recent addition to the ADA list of gypsums, produced due to the need for dies with increased expansion to compensate for the greater shrinkage that occurs in the newer higher melting alloys used for dental casts.

W/P ration is 0.18-0.22 resluting in a stronger gypsum product

- rubber based impression materials have almost emilinated the use of this paste

- it came as two pastes

- inexpensive 

 - a flexable water based type of impression material

- examples include agar hydrocolloid and alginate hydrocolloid.  

flexable/elastic - aqueous

- a gluelike material composed of two or more substances in which one substance does not go into solution but is suspended within another substance. It has at least two phases.

- a water based colloid used as an elastic impression material

- when one of the substances in a colloid is water, the colloid is know as this:

- this can be changed from a liquid solutionor sol into a rubber like gel simply by raising or lowering its temperatur.

- the transformation is a physical change and is not accompanied by a chemical reaction therefore it is reversable

"physical change, not chemical"

- an alginate impression material that is mixed to a sol state and as it sets it converts to a gel by a chemical reaction that irreversibly changed its nature

"chemical change, not physical"

the most widely used impression material

but it is the least accurate

ALGINATE (irreversible hydrocolloid)

a characteristic of gels to contract and squeeze out some liquid that then accululates on the surface

- if you left it sitting out, it would shrink -

a hard and brittle impression material used in complete denture procedures

zinc oxide eugenol

The chairside assistant's responsibilities can include the following:

- operatory preparation

- patient position

- oral evacuation

- instrument transfer

- all of the above

movement of fingers and wrist is what class of motion conservation in four handed dentistry?

- class I

- class II

- class III

- class IV

what are two types of periodontal dressings?

advantages: inexpensive, easy to tie and soft to the tongue

Disadvantage: wicks, allows bacteria to be sucked near wound, not resoubed by the body, some what inflammatory

after the initial set of gypsum product, you can separate your model from the impression

T or F

the chemical reaction that takes place in gypsum products is ______________

hydration is the result of heating gypeum and driving off the water of crystallization

t or f

what are the three components of visoelastic deformation?

what group of people first used public health codes?

- celtic

-greek

-hebrew

-romans

On an instrument identified by the three number system , what does each number describe?

What are the four basic principles of four handed dentistry?

Plaster and stone are chemically ______, but physically ______________ forms of the compound calcium sulfate

Whcih of the following is NOT a component of dental inpression compounds?

- resins

- wax

- coloring agents

- all of the above are components

- none of the above are components

T or F:

Retarded elastic deformation is recoverable