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a secondary canal extending canal extending from the pulp to the surface of the root; frequently found near the apex of a root but may occur higher and provide a connection to a perio pocket
accessory root canal
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production and development of enamel
amelogenesis
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dentition that begins in utero
primary
-
primary teeth are being exfoliated and permantent teeth come in 6-12 years old
mixed dentition
-
mineralization begins at birth and continues into adolescenece
toots are complete usually by 3 years after eruption
permanent teeth
-
the tearing away or forcible separation of a structure or part.
avulsion
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an oral habit of grinding, clenching, or clamping the teeth;
bruxism
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conducive to dental caries
cariogenic
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used to define a carious lesion
carious
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a calcified spherical body composed of cementum, lying free within the pdl, attached to the cementum or imbedded within the cementum
cementicle
-
disease of mineralized structures of the teeth characterized by demineralization of the hard components and dissolution of the organic matrix
dental caries
-
carious lesion that has become stationary and does not show a tendency to progress further; frequently has a hard surface and takes on a dark brown or reddish-brown color
arrested caries
-
occures on surfaces not previously affected; also called initial caries; early lesion may be referred to as incipient caries
primary caries
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widespread formation of chalky white areas and incipient lesions that may increase in size over a comparatively short time
rampant caries
-
occures on a surface adjacent to a restoration; may be a continuation of the original lesion; also called secondary caries
recurrent caries
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the natural teeth in a dental arch
dentition
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the permanent teeth that erupt into the positions of exfoliated primary teeth
succedaneous
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what pH does cementum demineralize
6.0-6.7
-
what pH does enamel demineralize
4.5-5.5
-
the pH at which demineralization occures
critical pH
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localized, post-eruptive, pathologic process of external origin involving softening of the hard tooth tissue and proceeding to the formation of cavity
dental caries (WHO)
-
what are the requirements for the development of a cavity (6)
- microorganisms
- biofilm
- carb
- susceptible tooth surface
- strepococcus mutans
- lactobacillus
-
involves one tooth surface
simply cavity
-
involves two tooth surfaces
compound cavity
-
involves more than two tooth surfaces
complex cavity
-
what are the steps of the formation of cavities
- phase I (incipient (enternal))
- Phase II (white marks)(untreated incipient)
-
what are the three root caries
- cemental caries
- cervical caries
- radicular caries
-
steps in root caries
- 1. gingival recession
- 2. begins near CEJ
- 3. enamel not envolved
- pH cementum 6.0-6.7
- pH enamel 4.5-5.5
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clinical recognition of root caries
cavitated lesions are soft leathery or hard
-
wearing away of a tooth as a result of tooth-to-tooth contact
attrition
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what is caused from aggressive brushing
abrasion
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what is caused from to much acid
erosion
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