TheoryII

Home

Get App

Create

what is a substance applied with a toothbrush or other applicator?

dentifrice
what are three uses of dentifrice?
- Remove biofilm, stain, deposit removal
- application of therpeutic agents (fluoride, desensitizing agent)
- superficial cosmetic effects (whitening, stain removal)
how does dentifrice reduce biofilm? (what substances are used in the dentifrice)
- prevents attachment of bacteria to tooth surface
- triclosan
- zinc citrate
what substance are used in the dentifrice to reduce biofilm?
- triclosan
- zinc citrate
what does triclosan + copolymer (PVM/MA)=

increase substantivity (lasts longer)
what is in vivo mean?

in someones mouth
what does in vitro mean?

in lab
what is the primary agent that is shown efficacy in reducing gingival inflammation?

triclosan
what is put in dentifrice to prevent caries/hypersensitivity?

fluoride
what % of potassium nitrate reduces dentin hypersensitivity?

5%
what does the fluoride in the dentifrice help do?

remineralization (prevent caries and sensitivity)
what are four ingredients used to help reduce supra calc formation?
- pyrophosphate salts
- zinc salts
- sodium hexametaphosphate
- triclosan
what are two things cosmetic results from dentifrice are based on?
- mechanical removal of stained biofilm
- bleaching agent
what are the five things most dentifrices contain?
- detergent
- abrasive
- sweetener
- humectant
- therapeutic agent
how are dentifrices primarily sold?

pastes and gels
what % of a dentifrice is water?

20-40%
what % of dentifrice is therapeutic agent?

1-2%
a ______ dentifrice has a drug or chemical agent added for a specific preventive or therapeutic action

therapeutic
what % of dentifrice is detergents?

1-2%
what is the foaming action of dentifrice?

detergents
what are five purposes of detergents?
- lower surface tension
- penetrate and loosen surface deposits
- moistens and lifts off tooth
- emulsify debris for easy removal by tb
- foaming action
what substance are used as detergents? (2)
- sodium lauryl sulfate
- sodium N-lauryl sarcosinate
what are three purposes for abrasives?
- cleans well with no damage to tooth
- polishing agent used to produce smooth surface
- a smooth surface can prevent or delay the reaccumulation of staisn and deposits
what abrasives are used (4)
- calcium carbonate
- phosphate salts
- hydrated aluminum oxide
- silica, silicates and dehydrated silica gels
what are the thickeners of dentifrice

binders
what are two purposes of binders?
- stabilize the formulation
- prevent separation of the solid and liquid ingredients during storage
what types of binders are used? (4)
- mineral colloids
- natural gums
- seaweed colloids
- synthetic celluloses
what are two purposes of humectants?
- retains moisture
- prevents hardening when exposed to air
what are three substances used as humectants?
- xylitol
- glycerol
- sorbitol
what component of dentifrice prevents hardening?

humectant
what component of dentifrice is the foamin agent?

detergents
what are two purposes of preservatives?
- prevent bacterial growth
- prolong shelf life
what are three substances used as preservatives?
- alcohol
- benzoates
- dichlorinated phenols
what % of dentifrice is preservatives

2-3%
what % of dentifrice is humectants?

20-40%
what % of dentifrice is binders?

1-2%
what % of dentifrice is abrasives?

20-40%
what % of dentifrice is flavoring agents?

1- 1.5%
what are two purposes for flavoring agents?
- impart a pleasant flavor for pt acceptance
- mask other ingrediants
what are 3 substances used for flavoring agents?
- xylitol
- glycerol
- sorbital
t/f the substances used for flavoring agents are also used for humectants

true
what are four preventative uses of dentifrice?
- caries
- hypersensitivity
- inflammation
- cal formation

Author

cassiedh

63306

Card Set

TheoryII

Description

Dentifrices, Mouthrinses and Irrigation

Updated

2011-02-01T01:54:05Z

Show Answers