Term
| What tooth surface does the inner enamel epithelium develop? |
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Definition
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Term
| What becomes the dentoenamel junction? |
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Definition
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Term
| the stratum intermedium occurs in which stage of the enamel organ's development? |
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Definition
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Term
| the shape of the crown of the tooth is completely determined in the (?) stage |
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Definition
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Term
| the inner enamel epithelium and the outer enamel epithelium flatten together to form the: |
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Definition
| reduced enamel epithelium |
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Term
| list the stage of enamel organ development in their proper order |
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Definition
| dental lamina, bud, cap, bell |
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Term
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Definition
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Term
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Definition
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Term
| the dental lamina begins in the (?) embryonic week |
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Definition
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Term
| the successional lamina forms: |
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Definition
| premolars, canines, incisors |
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Term
| the dental sac is first seen in which stage of the enamel organ? |
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Definition
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Term
| Where are the odontoblasts when they finish forming primary and secondary dentin? |
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Definition
| in the pulp cavity closest to the dentin |
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Term
| the first place that the enamel calcifies is the |
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Definition
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Term
| Ameoloblasts form enamel. When they are finished forming enamel, they lay down a smooth layer called: |
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Definition
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Term
| what two structures combine at the cervical loop to form Hertwig's Epithelial Root Sheath? |
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Definition
| Outer enamel epithelium, inner enamel epithelium |
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Term
| Epithelial cells that remain after the disintegrating of the epithelial root sheath are called: |
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Definition
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Term
| the dental sac, dental papilla, and enamel organ together make up the: |
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Definition
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Term
| Odontoblasts lay down the dentin matrix first. This induces the preameloblasts to become ameloblasts and lay down the enamel matrix. |
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Definition
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Term
| which part of the tooth germ produces the periodontal ligament? |
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Definition
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Term
| Enamel forms before dentin. Dentin forms before cementum |
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Definition
| the first statement is false; the second is true |
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Term
| a hypocalcified area of enamel that extends from the DEJ to the outer occlusal surface are called: |
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Definition
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Term
| grooves evident on some teeth in the oral cavity, associated with the lines of Retius, are called: |
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Definition
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Term
| Microscopic feature in enamel consisting of small dark brushes near the DEJ are: |
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Definition
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Term
| Enamel (?) result from odontoblasts that cross the basement membrane. |
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Definition
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Term
| which of the four tooth structures is formed first? |
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Definition
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Term
| the pulps of an 8 year old will be (?) than the pulps of an 80 year old |
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Definition
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Term
| which of the following kinds of dentin has tubules filled with calcium salts? |
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Definition
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Term
| the percentage of inorganic material in dentin is |
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Definition
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Term
| the odontoblasts in the pulp may respond to carious lesions by forming |
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Definition
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Term
| dentin receives its nourishment primarily from |
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Definition
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Term
| which of the following kinds of dentin forms after eruption? |
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Definition
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Term
| the enamel of the tooth is generally the thinnest at the: |
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Definition
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Term
| which of the following exhibit the growth pattern of enamel rods? |
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Definition
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Term
| the cytoplasmic extensions of the odontoblast occupy the |
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Definition
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Term
| which of the following represents the incremental growth of dentin through time? |
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Definition
| Imbrication lines of Von Ebner |
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Term
| Pressure on the periodontal ligament will: |
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Definition
| reduce blood flow, cause bone resorption |
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Term
| pulling or tension on the periodontal ligament will: |
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Definition
| increase blood flow, cause bone formation |
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Term
| in a radiograph, the alveolar bone proper is seen as the |
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Definition
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Term
| the fibers that get trapped in the calcifying cementum are called |
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Definition
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Term
| misplaced ameloblasts that migrate to the root area are called |
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Definition
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Term
| the type of cementum that is most commonly located in the apical third of the root is called |
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Definition
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Term
| the pressure of a permanent tooth erupting against the primary tooth initiates the osteoclasts to resorb the primary roots. Primary teeth will only resorb when a permanent successor is present |
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Definition
| the first statement is true; the second is false |
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Term
| what area of the tooth is cementum the thickest? |
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Definition
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Term
| at the CEJ, the cementum and enamel may be separated (?) of the time |
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Definition
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Term
| what structures are considered part of the periodontium? |
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Definition
| alveolar bone, cementum, periodontal ligament |
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Term
| name the three germ layers |
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Definition
| ectoderm, mesoderm, endoderm |
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Term
| what is the period of the embryo? |
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Definition
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Term
| when is the germinal stage? |
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Definition
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Term
| when is the period of the fetus? |
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Definition
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Term
| during which week of the embryonic period does the face begin to form? |
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Definition
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Term
| name the five facial processes |
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Definition
| frontonasal, maxillary process(2), mandibular process (2) |
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Term
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Definition
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Term
| what is the oropharyngeal membrane and when does it disintegrate? |
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Definition
| membrane that separates the oral cavity and the digestive tract |
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Term
| what two structures connect when the oropharyngeal membrane disintegrate? |
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Definition
| oral cavity and digestive tract |
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Term
| what do placodes develop? |
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Definition
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Term
| what two processes form the upper middle lip and the philtrum? |
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Definition
| left and right medial nasal processes |
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Term
| what processes form the upper lip? |
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Definition
| medial nasal process and maxillary process |
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Term
| during which week after fertilization could a cleft lip develop? |
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Definition
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Term
| a unilateral cleft lip is caused by the lack of fusion between which processes? |
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Definition
| medial nasal process, and maxillary process |
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Term
| a bilateral cleft lip is caused by the lack of fusion between which processes? |
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Definition
| right and left medial nasal process, maxillary process |
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Term
| the first pharyngeal arch is also called the mandibular arch. this arch is subdivided into two processes |
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Definition
| the maxillary process and the mandibular process |
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