Dental tissues Flashcards
name these structures
rank each part of the tooth according to mineral percentage (high to low)
enamel, dentine, cementum, bone
rank each part of the tooth according to matrix percentage (high to low)
bone, cementum, dentine, enamel
what kind of product is enamel?
an epithelial product
what are the properties of enamel?
hard but brittle
what is the hardness of enamel ?
KN 360-390
what is the main structure of enamel?
enamel prisms
what colour is enamel?
translucent
is enamel vital or non vital?
non-vital
what bur is needed to cut through enamel?
high speed air turbine with
-diamond fissure
-tungsten carbide
what kind of product is dentine?
specialised connective tissue
what are the properties of dentine?
strong and resilient
what is the hardness of dentine?
KN75
dentine is made up of 20% matrix and 70% mineral, what is the matrix made of?
collagen
what is used to cut through soft carious dentine?
slow speed bladed rose head bur
what is the form of dentine?
made up of tubules
what has more tubules pre dentine or ADJ dentine?
pre-dentine
is dentine vital or non-vital?
vital- can respond to insult to protect the pulp (secondary dentine)
what kind of product is dental pulp?
specialised connective tissue
what are the 3 roles of the dental pulp?
-dentine formation
-provide sensory innervation
-defence and repair
name these parts
how does dentine being porous affect the pulp?
-materials can irritate the pulp
-materials can be therapeutic to pulp (CaOH)
what kind of product is cementum?
mineralised specialised connective tissue
what is the purpose of cementum?
-covers root
-resistance to resorption
-supports the tooth
