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Learning Link 3
Tooth origin and formation
| Question | Answer |
|---|---|
| deciduous | falling off teeth "baby teeth" |
| dentition | permanent teeth |
| initiation | 1st stage |
| proliferation | 2nd stage, includes the bud and early cap stages |
| dental organ | gives the tooth bud it's coloring |
| dental papilla | makes up the inner structures of the tooth, such as the dentin and the pulp |
| mesoderm | middle layer |
| dental sac | makes up the surrounding covering for the dental organ and papilla |
| odontoblasts | cell growth to form the dentin, the bulk of the tooth |
| ameloblasts | cell growth to form the enamel covering tissue of the tooth |
| cementoblasts | cell growth to form the root-covering cementum tissue |
| fibroblasts | cell growth to form the periodontal ligaments |
| osteoblasts | cell growth to form alveolar bone and the alveolar plate |
| defferentiation | 3rd stage, changes in tooth bud shape and makeup |
| apposition | 4th stage, mineral salts and oeganic matter are set down in place for tissues and tooth formation |
| calcification | 5th phase, characterized nu the hardening and setting of tooth tissues |
| eruption | 6th stage, "cutting of the teeth" it occurs when the tooth moves toward the oral cavity and enters through the tissues |
| attrition | last stage, wearing away occurs where teeth interact through mastication and speech |
| odontoclasts | cells that bring about absorption of primary tooth roots |
| cementoclasts | cells that destroy tooth cementum |
| osteoclasts | cells that destroy or cause absorption of bone tissue |
| anomalies | changes or disturbances during any of the development stages can cause a variety of tooth irregularities or abnormalities |
| amelogenis imperfecta | a genetic disorder resulting in the formation of defective enamel |
| anodontia | partial or total lack of teeth |
| germination | single tooth germ separating to form two crowns on a single root |
| enamel | a hard tooth covering that is 96 percent inorganic |
| lamellae | cracks or imperfections in enamel tissue extending toward or into te dentin |
| dentin | the main tissue surrounding the pulp |
| pulp | found in the center of the tooth |
| pulpitis | also called toothache |
| pulp stone | small growth on tooth |
| pulp cyst | a closed, fluid filled sac within the pulp tissue |
| granuloma | a growth or tumor usually found in the root area |
| lacuna | tiny cavities that may contain cementocytes |
| canaliculi | small channels or canals |
| periodontal | membrane, fibers that anchor the tooth in the alveolar socket |
| alveolar | bone, bony sockets, or crypts for teeth placement in the maxillae and the mandibular bones; |
| gingiva | mucous tissue surrounding the teeth. Also known as gum tissue |
| alveolar bone | is composed of an alveolar socket and a dense covering of compact bone with an inner and outer growth called cortical plate. |
| cementum | the function of the cementum in the periodontium is to provide anchorage for the tooth in the alveolar socket. |
| odontology | the study of teeth and their form |
| oblique fibers | attach the alveolar socket to the majority of the root cementum and assist in resistance of the axial forces |
| apical fiber bundles | present in multirooted teeth, extending apically from the tooth furcation |
| keratinized | hard tissue, area where the gingiva and mucous membrane unite |
| marginal | the portion that is unattached to underlying tissues and helps to form the sides of the gingival |
| oblique fibers | attach the alveolar socket to the majority of the root cementum and assist in resistance of the axial forces |
| apical fiber bundles | present in multirooted teeth, extending apically from the tooth furcation |
| keratinized | hard tissue, area where the gingiva and mucous membrane unite |
| marginal | the portion that is unattached to underlying tissues and helps to form the sides of the gingival |
| papillary | the part of the marginal gingiva that occupies the interproximal spaces |
| maxillary | upper tooth area |
| mandibular | lower tooth area |
| arch | half of the mouth, either maxillary or mandibular |
| quadrant | half of an arch, right or left, and containing eight teeth |
| anterior | front area of the mouth |
| posterior | area back from the corners of the mouth |
| incisors | single-rooted anterior teeth with a sharp citting edge |
| canines | single-rooted anterior teeth at the corners of the mouth |
| crown | the top part of the toothm containing the pulp chamber, dentin, and enamel covering |
| anatomical crown | covered with enamel and may not be totally visible, but will be present the entire life of the tooth |
| clinical crown | surface visible in oral cavity |
| root | bottom part of the tooth |
| cervical line | the place where the enamel of the crown meets the cementum of the root |
| apex | tip of a tooth |
| contact area | surface point or area where two teeth meet side by side |
| embrassure | V-shaped area between contact point of two teeth and gingival crest |
| proximal surface | side wall of tooth that meets or touches side wall of another tooth |
| axial surfaces | long-length surface of tooth |
| line angle | meeting of three surfaces on a tooth, such as mesial, incisal, and labial |
| midline | imaginary vertical line bisecting the head at the middle of the face |
| antagonist | tooth that counteracts, occludes, or contacts another tooth in the opposing arch |
| facial | surface of the tooth toward the cheek and lips |
| buccal | posterior teeth surface toward the cheeks |
| labial | anterior teeth surface toward the lips |
| lingual | surface of teeth toward the tongue |
| mesial | side surface of tooth closest to midline |
| distal | side surface of the tooth farthest from the midline of the face |
| chewing | surface that meets with the opposing teeth to complete the tooth's functions |
| incisal | cutting edge of anterior teeth |
| occlusal | grinding or chewing surface of premolars and molars |
| apical | relative to root-tip end of tooth |
| cingulum | smooth, convex, or rounded bump on the lingual surface near the cervical line on anterior teeth |
| ridge | a linear elecation that receives its name from its location, such as lingual and marginal ridge |
| marginal ridges | rounded enamel elevations on occlisal surface of posteriors |
| transverse ridge | occurs on occlusal surface of posterior teeth at a point where two triangular ridges meet |
| mamelon | bumps forming a scallop border of the incisal edge of newly erupted anteriors |
| labial | teeth toward lips |
| lingual | teeth toward tongue |
| macrodontia | abnormal large teeth |
| fissure | groove, slit, or break in enamel surface of a tooth |
| eminence | high place, projection |
| fluorosis | reaction to overfluorosis |
| dentinogenesis | genetic disoeder, gray-colored |
| supernumerary | more than normal amount of teeth |
| cingulum | smooth, convex, or rounded bump on the lingual surface |
Created by:
LindseyT
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