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40 Cards in this Set
- Front
- Back
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What is gastrulation?
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When single blastula develops into ectoderm, mesoderm, and endoderm within 2-3 weeks!
cells-->trilaminar embryo and internal cavities |
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At 7 weeks of human development, what can the embryo do and what can we see of the embryo?
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1)communication between oral and nasal cavity, 2)tongue 3)palatal shelf developING***** 4)nasal septum developed
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WHAT IS THE DIFFERENCE BETWEEN THE 7TH AND 8TH WEEK OF EMBRYO DEVELOPMENT?
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DEVELOPED palatal shelf by musculature of tongue in 8th week.
8th-10th week is devleopment of TOOTH BUDS*** |
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How many placodes are on the dental lamina for tooth development?
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20, represents succedaneous teeth. the dental lamina comes around 6-8 weeks.
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Stages of tooth developmnent?**BQ
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Bud stage=appearance of tooth bud without arrangement of cells. 6 weeks.
Cap stage=1st signs of cell arrangement. enamel forms. Last, Bell stage, enamel=bell |
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Describe the human dentiition. Straight/gay, monogomous, molygomous?
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Human Dentition is kind of like the way a normal straight person is.
Heterodont-different teeth with diff forms/functions. Diphydont-2 sets of teeth produced. |
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Free gingiva?
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Free gingiva to gg (gingival groove)
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Attached gingiva?
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gg(gingival groove_ to mucogingival junction (mgj)
orange peel appearance in 30/40% |
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alveolar mucosa?
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apical to mgj= dark red appearance.
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What is the shape that the mesial and distal base/cervical portion and apex of the incisal ridge of the incisal ridge fit within?
labial lingual aspects of all TEETT IN GENERAL fit into what shape? |
mesial/distal aspects of all anterior teeth fit within TRIANGLES at the base/apex/incisal ridge/cervical portion.
Labial lingual aspects of all teeth fit in TRAPEZOID teeth. |
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What are lobes? types?
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Primary section of formation of the development of the tooth.
cusps, mamelons (one of 3 lobes at incisal ridge of newly erupted incisors), and cingulum. we have 4 lobes on all teeth! 3 labial, and 1 cingulum! |
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Describe the different grooves?
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Developmental grove=shallow lines between lobes.
supplemental=not between lobes. |
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What is a mamelon?
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one of 3 lobes of anteriors at the incisal ridge of newly erupted incisors
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Where is the cingulum lobe***?
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LINGUAL LOBE OF ANTERIOR TOOTH.
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Turbercle
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small evelbation as a result of extraformation of enamel (Deviation)
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What is a fossa?
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irregular depression or concavity. lingual fossa
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What is a line angle**?
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junction of TWO surfaces. like mesiolabial lines.
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Central Incisors: When is the eruption? mineralization ending? # of roots and canals?
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7-8yrs erupted, mineralized by 10 yrs, and 1 root, and 1 canal.
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What are the width/length ratio avgs for men vs women on the central incisor clinical crows of the maxilary?
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10.2 length, 8.6 width=man.
9.4 length, 8.1 width=woman. |
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What is vetus and notus?
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vetus=old tooth, notum=new tooth.
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What is the eruption of the lateral incisors? Mineralization end? roots/canals?
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8-9 years, 11 year mineralization, 1 root/1canal.
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What is the eruoption of the canine?
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Eruption=11-12 years.
Mineralization end: 14 year. 1 Root/1 Canal. |
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What is the average height/width of a man's lateral maxillary incisor?woman?
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8.7 height, 6.6 width=man.
7.8 height, 6.1 width=woman. |
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What is the average height/width of a man's maxillary caniner?woman?
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Man=10.1 height, 7.6 width.
Woman=8.9 height, 7.1 width. |
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What is the longest tooth?
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Maxillary canine.
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What are the only teeth with labial ridges***??? BQ
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Canines!
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Describe the distal surface of the canine in comparison to the mesial surface of it?
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Distal surface of canine is fuller and more conves than the mesial side.
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What is the latin word for the permanent maxillary anteriors?
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Torsio Dentis
Literally means twisting tooth. |
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***How does the pupl chamber of the central max anterior differ from other teeth? BQ!!!
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Has a different pulp chamber: wider mesiodistal than buccolingual.
Think about diana's front tooth root canal and the shape of the tooth! |
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What is the smallest tooth in the mouth and has the simplest anatomy and most symmetricallity
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smallest, simplest anatomy,most symmetrical=MANDIBULAR CENTRAL INCISORS.
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How do the mandibular lateral incisors differ from the centrals?
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By slight twist of the crown on its root base (offset cingular). larger by .5mm to 1mm.
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Again*What areTHE ONLY TEETH WITH LABIAL RIDGES??
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Canines are the only teeth with labial ridges. BOARDDDDD QUUUU
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What are the teeth that are the guidance?
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4 Canines. Corner teeth.
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What does the pulp shape follow? Board q!***
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Pulp shape follows the torsio dentis.
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Board Q!! Which arch erupts first? Which sex? Shape of individuals?
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girls before boys, mandibular before maxillary, slender before stocky!
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Board Q!!! What do the spaces mean in primary dentition?
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Primate spaces usually represent: Mesial to maxillary canine and distal to mandibular canine. Allows for permanent dentition.
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What is the first tooth in the mouth and when does it come in?
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Mandibular central primary incisor is first tooth in the mouth at 6.5 months.
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What is the only anterior in the mouth with mesiodistal width more than cervicoincisal length?
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primary mandible central incisor.
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What tooth is bigger in the primary dentition, the primary central or primary lateral?
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Primary lateral.
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