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denistry
learn more about dentistry
| Question | Answer |
|---|---|
| tome's process | a secondary surface of the ameoblast that is responsible for laying down & guiding the enamel matrix into place |
| secondary dentin | forms after the completion of the apical foramen & slowly throughout the life of the tooth |
| alveolus | the tooth socket; bone that surrounds the root |
| mantle dentin | the first pre dentin that is formed & matures within the tooth |
| tetracycline | caused by taking an antibiotic while the dentin is forming: binds to the dentin & causes yellow staining |
| alveolar crest | highest point of the alveolar bone where the cortical plates join , should be slightly below the CEJ. |
| Intertubular dentin | dentin found between the tubules |
| fetus | week nine to birth |
| histology | the study of the structure and function of body tissues on a microscopic level |
| zygote | conception through first two weeks: cells rapidly increase in number |
| ectoderm | developing brain, & nervous system |
| endoderm | developing digestive system & glandular organs |
| mesoderm | developing heart, circulatory system, and internal organs. |
| embryology | study of prenatal growth & developing process of an individual |
| proliferation | when cells multiply rapidly |
| histodifferentation | the development of different tissues |
| cytodifferentation | development of different cells |
| face begins to forth in which week of prenatal development? | 4th week |
| morphodifferentation | the development of different forms |
| cap stage | the bud of the tooth begins to grow & changes shape |
| cleft palate | a passage between the nasal cavities & the mouth |
| cleft uvula | the uvula is separated slightly |
| stomedeum | shallow depression in the embryonic surface |
| cleft lip | when the maxillary processes fail to fuse w/ the medial nasal process |
| bud stage | first stage of odontogenesis, initation of the tooth begins |
| bell stage | where cell specialization or histodifferentation takes place |
| maturation | the odotogensis reaches completion in this final stag. the tissues of enamel, dentin, & cementum form in layers and fuse together |
| eruption | the tooth emerges from the gum tissue, & becomes visible |
| attrition | tooth wears away the incisal or occlusal surface during normal function & use. |
| dental sac | connective tissue forms an enclosed area |
| odontoblasts | dental forming cells |
| ameloblasts | enamel forming cells |
| cementoblasts | cementum forming cells |
| calcification | process of depositing calcium salts & other minerals. last stage before eruption |
| appearance of healthy gingiva | firm & tough adapted to the tooth |
| embryo | two weeks through 8 weeks |
| mantle dentin | first pre dentin that is formed |
| enamel | covers crown, hardest living tissue, translucent |
| cementum | covers root of tooth, attaches the tooth to alveolar bone, softer than enamel or dentin |
| dentin | makes up the bulk of tooth, surrounds the pulp chamber & root canals, lies under cementum and enamel |
| pulp | tissue that provides the tooth w/ its sensory functi |
| lines of retzius | appear as incremental lines or bands around the layers much like the growth rings on a tree |
| imbrication lines of Von Ebner | stained growth rings or incremental lines in dentin |
| Nasmyth's membrane | covering over the enamel of newly erupted primary teeth |
| maximum sulcus depth | 3 |
| inter-radicular septem | bone that seperates the roots of a multi rooted tooth |
| pertibular dentin | dentin that creates the wall of the dentinal tubule |
| tertiary dentin | reactive to irritants such a dental carries, attrition, erosion, or cavity preperation |
| evanesce | dissolving of primary teeth from permanent teeth erupting & applying pressure |
| best guide to a permanent tooth | primary tooth |
| alveolar fibers | function to resist rotational forces & tilting |
| apical fiber | function to resist forces that try to pull the tooth outward |
| oblique fiber | most abundant, resist intrusive forces that try to push the tooth inward |
| periodontal ligament | formed by fibroblast cells & secures the tooth in the socket by a # or organized fiber groups |
| lamina dura | thin compact bone lining the alveolus, can be seen on radiographs |
| interdental septum | bone that seperates each tooth socket |
| interdental gingiva/ interdental papilla | extension of unattached gingiva between adjacent teeth. |
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