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49 Cards in this Set
- Front
- Back
Does not resemble any other tooth, looks primitive
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Primary mandibular 1st molar
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Resembles permanent maxillary 1st molar
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Primary maxillary 2nd molar
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Teeth having no deciduous predecessors
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Accessional teeth (permanent molars)
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From how many lobe/s does a peg lateral develop
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1 lobe
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What do you call the sixth cusp in the permanent mandibular 1st molar?
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Tuberculum sextum
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What do you call the 6th cusp when located in the distal marginal ridge (between distal cusp and DL cusp)
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Tuberculim intermedium
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When do the deciduous teeth develop in utero?
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6 weeks
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When do the deciduous teeth develop in utero?
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6 weeks
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When do primary teeth begin to calcify
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4 mos in utero
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When do the deciduous teeth develop in utero?
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6 weeks
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When do primary teeth begin to calcify
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4 mos in utero
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Aspirin, valium and dilantin are teratogens which cause what defect in the baby?
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Cleft lip and palate
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Excess in vitamin D causes what in dentofacial devt
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Premature suture closure
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How many line angles do all posterior teeth have?
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8
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How many line angles do all posterior teeth have?
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8
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How many line angles are there in anteriors?
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6. There is no MI and DI line angle since they are rounded
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Oblique ridge is found only what group of teeth?
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Maxillary molars
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Oblique ridge is found only what group of teeth?
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Maxillary molars
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A ridge formed by the union of the lingual triangular ridge of a buccal cusp and a buccal triangular ridge of a lingual cusp
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Transverse ridge
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How many point angles do all teeth have?
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4
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Buccal cusp ridge is more pronounced in what tooth
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First premolars
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A ridge found on all primary teeth and only on permanent molars
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Cervical ridge
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Primary centers of calcification
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Lobes
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Primary centers of calcification
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Lobes
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Small pinpoint depressions found at the junction of developmental grooves or at terminals of these grooves
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Pit
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Primary centers of calcification
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Lobes
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Small pinpoint depressions found at the junction of developmental grooves or at terminals of these grooves
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Pit
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Narrow channel or crevice formed at the depth of a developmental groove
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Fissure
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Second premolars have how many lobes?
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3 buccal, 2 lingual
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Second premolars have how many lobes?
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3 buccal, 2 lingual
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Where is the largest embrasure located?
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Between max lateral and max canine
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Second premolars have how many lobes?
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3 buccal, 2 lingual
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Where is the largest embrasure located?
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Between max lateral and max canine
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Does an embrasure contribute to arch stability?
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No
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Part of the crown which is covered by enamel
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Anatomic crown
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Lobes are separated by developmental depressions in anterior teeth. What separated lobes for the posterior teeth?
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Developmental grooves
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The smallest primary tooth
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Primary mandibular central incisor
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Crowns of primary molars are SHORTER and more NARROW MESIODISTALLY at the CERVICAL THIRD than the permanent. True or false?
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True
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Enamel ends more abruptly on the permanent teeth rather than becoming thinner. True or false?
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False
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Primary tooth whith the most noticeable morphological deviation from permanent teeth
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Primary first molars
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First deciduous tooth to erupt
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Mand CI
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First deciduous tooth to erupt
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Mand CI
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First permanent tooth to erupt
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Mand 1st molar
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Anterior teeth with a cingulum located in the CENTER if the lingual surface
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Max 2 & 3
Mand 1 |
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Anterior teeth with a cingulum located in the CENTER if the lingual surface
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Max 2 & 3
Mand 1 |
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Anterior teeth with a cingulum located OFF CENTER to the DISTAL
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Mand 2 & 3
Max 1 |
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Longest and widest anterior tooth
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Max CI
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Greatest axial inclination on relation to the occlusal plane and the tooth least likely to have a divided pulp canal
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Max CI
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Complication in root planning in maxillary lateral incisor is because of
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Distolingual groove or palatogingival groove
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