Card Set Information
ch19 MOD 8
how are stains classified?
what are two locations of stain?
what type of stain occurs on the external surface of the tooth and may be removed by procedures of toothbrushing, scaling and/or polishing
what type of stain occurs within the tooth substance and cannot be removed by techniques of scaling or polishing
what are the two sources of stain
what are stains that develop or originate from sources outside the tooth. May be extrinsic and stay on outer surface or intrinsic and become incorporated within the tooth structure
what stain develops or orginates from within the tooth and are alwasy intrinsic and usually are discolorations of the dentin reflected through enamel
what are 8 types of extrinsic stain?
black line stain
what is the cause of yellow stain?
what are three causes of green stain?
what type of stain happens because of natural tendencies?
black line stain
what are four causes of brown stains?
foodstuffs (tea, coffee, soy sauce)
chlorhexidine and alexidine
what color of stain would chlorhexidine and alexidine cuase
what causes orange and red stain?
what causes metallic stains?
industrial workers inahle dust
what are eight examples of endogenous instrinsic stains
blood borne pigments
okay okay so that was nine get over it I was too lazy to change the question!
what type of stain is a pulpless tooth
what type of stain is a green stain
extrinsic but can become exogenous intrinsic
what type of stain is amelogenesis imperfecta?
whaty type of stain is an enamel partiall or completely misssing because of generalized disturbance of the ameloblasts
what stain is dentin is abnormal because of disturbances in odontoblastic layer?
what happens with pulpless teeth?
pigemnts from decomposed hemoglobing and pulp tissue penetrate the dentinal tubules
when do children get tetracycline stain?
when given to mother in third trimester or early childhood
whaty type of stain is an amelobalstic disturbance, teeth erupt with white spots or pits
systmic hypoplasia (part of enamel hypoplasia)
what type of stain is when a single tooth erupts with white spots
local enamel hypoplasia
what four stains can become exogenous intrinsic stains?
restorative materials (silver and copper amalgam)
what is tetracycline absorbed by?
bones and teeth
t/f tetracycline is transferred through the placenta and enters fetal circulation
what color is tetracycline stains?
light gree to dark yellow or gray brown
depends on dosage, length of time used and type of tetracycline taken
is tetracycline stain generalized or localized?
can be either depends on when it was administered