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16 Cards in this Set
- Front
- Back
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What is the function of primary dentition
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Reserve space for permanent teeth for proper alignment and occlusion
Efficient mastication Maintains normal facial appearance Formulates clear speech Maintains proper diet Avoids infection and pain |
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What are the first permanent teeth to erupt
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Mandibular 1st Molars
then Maxillary 1st Molars then Incisors |
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Morphological differences of crowns
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Crowns are wider MD than tall OC
Constricted neck of crown |
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Morphological differences in enamel
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Enamel is thinner and has consistent depth through crown
Enamel rods are parallel on occlusal surface and slope occlusally at the cervical ridge |
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Morphological differences in dentin
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Dentin is thicker over pulpal wall at occlusal fossa of primary molars
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Morphological differences in tooth structure?
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Less tooth structure protecting the pulp
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Morphological differences in roots
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Roots are longer and slender
Molar roots flare and practically have NO root trunks |
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Morphological differences in occlusal tables and contacts
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Smaller occlusal tables
Broad and flat contacts Molar crowns have narrow occlusal table buccolingually Molar occlusal anatomy is SHALLOW |
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Morphological differences in anterior teeth
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No perikymata on labial surface
No mamelons on incisal edges Prominent cervical ridges Prominent cingula that occupies 1/3 of cervicolincisal length |
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Morphological differences in posterior teeth
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Molar crowns are wide mesiodistally and very short occlusalcervically
Molar crowns have narrow occlusal table buccolingually Molar occlusal anatomy is SHALLOW Buccal cusps are not pointed or sharp Mesial cervical ridge is prominent 2nd Molars are larger than 1st Molars 1st Molars do not look like permanent 1st Molars Root furcations are near crown therefore there is little or not root trunks Roots flare beyond outlines of the crown Thin and slender roots 2nd Molar roots are spread MORE than 1st Molar |
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Which tooth has a distal contact that is crescent shaped and located in the middle 1/3
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Primary 1st Molar
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Which tooth has a distal contact that is crescent shaped and located in the incisal 1/3
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Primary 2nd Molars
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What shape and location is the mesial contact of Primary 1st Molars?
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Mesial contact is round and located in the incisal 3rd
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Which tooth has a mesial contact that is crescent shaped and located in the middle 1/3
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Primary 2nd Molars
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Which tooth has a transverse ridge that separates the mesial portion of the tooth
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Primary Mandibular 1st Molars
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Which cusp ridge is longer in primary canines?
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MESIAL CUSP RIDGE is longer than the distal cusp ridge in the PRIMARY MAXILLARY CANINE (the opposite is true for all other canines).
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