Final Review Flashcards by Cutler Frandsen

What is the liquid referred to in acrylics?

-Monomer

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What is the powder referred to as in acrylics?

-Polymer

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If you have a cavosurface margin, stained sclerotic dentin do you leave it there?

-No you don’t want to leave something that can be questionable

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Can a painful stimulus increase salivation?

-Yes

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What do you use to strengthen the hardness of the die?

-Low viscosity cyanoacrylate

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Why do you use type I mounting stone?

-It has the lowest expansion of all the stones

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What is type III stone used for?

-Study models

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What do you use type IV and V stone for?

-Used for dies

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What is the hardest type of dental stone?

-Type V but it expands more (used for ceramo metals and high heat stuff)

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What type of stone do you used for restorations that are going to be scanned and milled?

-Type IV (doesn’t expand as much)

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Colors are defined by how many variables?

-3

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Where does resin cement fall in solubility when compared to other cements?

-Lowest in solubility (least potential for moisture damage)

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What is the RMGI cement in the school?

-Rely-x luting plus

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Why are excursive contacts bad on posterior teeth?

Potential to break a cusp
Can cause TMD
Increases the activity of the elevator muscles

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What do you look for in cracked tooth syndrome?

Pressure on biting release

- Cold sensitivity

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Is it an emergency to restore a fractured cusp?

-No as long as there is no gap in the base material

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Would you use a self-adhesive resin cement to bond a ceramic onlay?

-No (use esthetic resin cement or an adhesive resin cement)

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What is the concern with bonding agents with a build up dual cure resin material?

Best way is to stay within the system of a single company

- Use a total-etch and rinse adhesive, don’t use a self etch adhesive

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What is the chemical used to bond to glass ceramics such as feldspathic porcleain or emax?

-Silane

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What do you use to prepare the surface of a glassy ceramic

-Hydrofluoric etch

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With crystalline ceramics what do you use for a bonding agent?

-MDP (has to have a phosphate end on it that is going to bond with the zirconia oxide)

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What is the degree of diversion tolerable between the locater, the locater extanded range and locator rdx?

Locater 10 per unit
Locator extended range 20 per unit
Locator rdx 30 per unit

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What is the U of U rules for taking a full arch impression

Study These Flashcards

Most posterior tooth
Canine
Three or more units

What is the purpose of a stress breaker in fixed bridges?

Study These Flashcards

You don’t want a teeter totter effect such as periodontal involved teeth
Pier to pier to pier bridge
Crossing the midline in the lower arch because of movement of the symphysis

Orthodontically uprighting a tipped second molar what will happen bodily with that tooth as it is uprighted?

- The apical third is the center of the pivot and the tooth will get taller - You may have to shorten the tooth

What is the most common pontic design?

-Modified ridge lap

What tooth has the highest surface area of PDL?

-Upper 1st molar

T/F The lower first molar has the highest percent of a quadrant of surface area of PDL

True

What is the downside of a cast post and core?

-If it fails it is usually catastrophic (need a 2mm ferrule minimum)

What are the primary goals of occlusal adjustment

-Bilateral simultaneous posterior tooth contacts force directed down the long axis of the tooth -Seated condyles -Anterior guidance if possible if not then group function

What does two plane facial reduction do?

-Gives you better resistance and retention form

What are the contraindications for probanthin?

- Glaucoma | - Be careful in the elderly because they might have this issue

With the electro surgery what surfaces should you avoid?

-Metallic

If you see sparking with an electro surge what should you do?

-Turn the current down

What two things are extremely important when preparing teeth for crowns?

- Clearance | - Reduction

What are the hemo static agents used in dentistry?

- Viscostat clear ( aluminum chloride) | - Astringident (ferric sulfate more effective)

Where do you not want to use the ferric sulfate?

-Anterior teeth because it can stain the gingival tissue

What does contact angle have reference to?

- Higher contact angle the more hydrophobic the surface - Something that is wettable is more hydrophillic giving it a lower contact angle - THe materials we use are hydrophobic

What does a post do if you are using it in a build up?

-Just helps retain the build up it does not strengthen the tooth

With the SDA approach to treatment plan what are the criteria?

- Older than 40 - Good oral hygiene - If a patient does not get their home care up to par then don't do an SDA

What are the reasons for subgingival margin replacement?

- Esthetics - Retention - You are following decay to get to sound tooth structure

Polycarboxylate cement (tyloc plus) isnt used as a luting agent because why?

-It washes out but it is a great cement for a temporary, but don't every put it on the post

What is the order you check the fit of an indirect restoration?

- Contacts - Intaglio surface - Margins - Esthetics - Occlusion

What does mechanical mixing dental stone give you?

- More dense | - More bubble free

Why is it so critical to set a timer with impressions and cements?

- So you can get your accuracy better - so you don't get distortion - So you don't get contamination

What material do we use in the clinic that has zinc oxide eugenol?

- IRM - Temp bond - Tylox

Why is Eugenol good?

-It is soothing abtundant to pulpal tissue

What are the most important qualities for cements?

- Compressive strength | - Modulus of elasticity

What is ideal taper and what is acceptable?

6-10 | -22

With shade matching there is hue value and chroma, which is the toughest of the three to get right?

-Value

With value is it easier to correct one that is to high or to low?

-To high

What can you secure to a post with?

-Don't use Rely x luting plus because the Glass Ionomer expands

Why do we do some cases mount the models on articulator and evaluate in CR rather than CO?

- Multiple restorations or more complex cases - You can do a diagnostic wax up in CR - The acquired bit can migrate over time - Helps with vertical dimension issues

How do you combat MMP action?

- Chlorhexidine | - Benzoconium chloride

What is metamarism?

- Different lighting backgrounds can make an object appear a different color - Shade match in multiple lights, use a low chroma

Final Review Flashcards

(55 cards)