Preventive Vocab_Ch 3

Front 1

Pit-and-fissure caries

Back 1

cavities mainly on the occlusal surfaces of posterior teeth. Lingual pits of max. incisors, and in buccal pits on the surfaces of mandibular molars

Front 2

Smooth-surface caries

Back 2

caries on intact, smooth enamel surfaces (harder to get decay on these surfaces--often we see this if person habitually imbibes soda or sucks on hard candy). Can be broken down into thost that affect the buccal and lingual vs. those that affect interproximal/contact area-mesial/distal

Front 3

Root-surface caries

Back 3

caries on the root (cementum is softer and more suseptible to decay than enamel. If root surfaces are exposed (i.e. recession) decay risk is high)

Front 4

Secondary/recurrent caries

Back 4

occur on the tooth surface adjacent to an existing restoration

Front 5

Dentinoenamel junction (DEJ)

Back 5

point wehre the dentin of the tooth and the enamel meet

Front 6

overt, frank lesion

Back 6

when demineralization has continued into the dentin and cavitation occurs

Front 7

rampant dental caries

Back 7

when the time between the onset of the incipient lesion and the development of cavitation is fast. -often associated with frequent intake of sucrose or xerostomia or both

Front 8

pore-space

Back 8

The amount of space that exists in normal enamel (this space is greater in enamel defects-ex: incipient lesion)

Front 9

enamel rods

Back 9

interlocking structures that make up tooth enamel. Contain billions of crystals.

Front 10

Striae of retzius

Back 10

Incremental growth lines seen in enamel and are results of enamel's development. Act as part of a diffusion network that goes into deeper layers of enamel and allows for remineralization. However, also avenues for palque acids to enter and cause demineralization. Allow access to the inter-rod spaces

Front 11

inter-rod space

Back 11

the space between enamel rods. This area widens during demineralization

Front 12

caries inactive

Back 12

incipient lesions but no cavitation

Front 13

glucans

Back 13

sticky extracellular polysaccharides. MS characteristically produces these from sucrose/glucose-this feature helps MS survive and stick around longer in the mouth and in part is what makes it extra pathogenic in terms of carious lesions.

Front 14

aciduric

Back 14

ability to survive in a relatively acidic environment (ex: lactobacilli)

Front 15

odontoblasts

Back 15

cells that make dentin

Front 16

ameloblasts

Back 16

cells that make enamel

Front 17

dental pulp

Back 17

located in the center of the tooth. Contains neves and blood vessels-provides nutrients to the tooth through the dentinal tubules.

Front 18

odontoblastic process

Back 18

an extension of the odontoblast into the dentinal tubules

Front 19

predentin

Back 19

substance secreted by the odontoblast (base layer for the formation of dentin)

Front 20

peritubular dentin

Back 20

hypercalcified layer of dentin tubules

Front 21

enamel spindles

Back 21

tubules that extend from the DEJ into the enamel

Front 22

intertubular dentin/mantle dentin

Back 22

dentin inbetween tubules

Front 23

canaliculi

Back 23

smaller tubules for intertubular communication and fluid transport (flows outward from the pulp).

Front 24

Root caries

Back 24

caries located on the root (cementum) of the tooth, which frequently increases with age due to increased gingival recession, or exposure of root surfaces

Front 25

cemento-enamel junction

Back 25

CEJ. Area where the cementum meets the enamel (at the cervix of the tooth)

Front 26

Arrested root caries

Back 26

carious lesions on the root surfaces that have stopped the demineralization process and have begun to remineralize. Thress physical characteristics are present: *outer barrier of hypermineralized surface dentin. * sclerotic inner barrier between carious and sound dentin * mineralization occurring whithin the dentinal tubules

Front 27

Secondary caries

Back 27

Caries that develop around a restoration

Front 28

composites

Back 28

tooth colored fillings

Front 29

amalgam

Back 29

restoration/filling that is a mixture of mercury with at least one other metal (silver, tin, copper and zinc)

Front 30

glass ionomer

Back 30

hard plastic with fine incorporated glass powder to resist abrasion. Used for restorations and sealant substitute

Front 31

Stephen curve

Back 31

graphical representation showing the drop in pH following consumption of cariogenic foods/drinks and the time it takes for the subsequent rise in pH (indicating return to normal, resting pH-around 7; neautralization)