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28 Cards in this Set
- Front
- Back
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Primary teeth - Set traits: -Much smaller - Spacing between anterior teeth is normal- allows room for the larger adult teeth -Wha is the somewhat larger spece mesial to the maxillary canine and distal to the mandibular canine? |
Primate spacce |
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Primary vs. Secondary: Primary teeth are smaller than secondary -Marked CEJ constriction and? - Relatively __ roots compared to crowns - More wear because? -Thinner enamel/whiter/fewer anomalies |
-Cervical crown bulges -Long roots - Less mineralized |
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Dentition Traits of anterior teeth compared to secondary: -Have prominent __ and __ -No labial depressions, mamelons, or perkymata -Anterior roots are thin mesiodistally and bend labially in the apical third |
-Prominent cervical ridges and lingual cingulum |
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Dentition traits of primary molars - Prominent __ with exaggerated cervical line curved apically on the facial Crowns taper narrower toward occlusal with narrow occlusal table - Wide __ versus __ |
- Prominent Mesial cervical bulge - Wide mesiodistally vs. occlusogingivally |
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Primary molars: Shallow occlusal anatomy with few grooves or depressions **__ are larger than __ What are 2 ways occlusal table of primary molar is smaller than permanent? |
Second molars are larger than first! Smaller because: - Less total area - Is proportionately smaller to total crown bulk |
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Primary Molar Roots: - Root furcation are near? - Roots are thin and slender - Roots __ considerably |
-Furcation is near crown (small root trunks) -Diverge considerably to make room for forming adult premolars within the jaw bones (dramatically flared) |
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Primary Incisors: - Crowns are longer __ than __ ***EXCEPT __ which is wider __ (otherwise similar to secondary incisors) - This is the only anterior tooth in either dentition where this is true |
-Crowns are longer incisocervically than mesiodistally -Max central incisor is wider mesiodistally |
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What are 3 characteristics of this primary tooth? |
- Facial cervical ridge - Bulbous cingulum -Squat crown characteristic of primary anterior teeth |
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The Primary maxillary lateral incisor __ than thecentral incisor, and itis longer__ than__ |
smaller, longer incisocervically than wide mesiodisally |
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Maxillary Canine - has considerably more bulk thanprimary incisors (larger in all directions) ***__ cusp ridge longer than __ cusp ridge |
mesial cusp ridge longer than distalcusp ridge
Maxillary 1st premolar of permanent teeth and canine of primary teeth are the only ones that have this!! |
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Primary Molar Traits: - Both types of maxillary molarshave __ roots - Mandibular molars have __ - All are wider__ than__ that willreplace them - All have prominent __ - Cervical lines curve apically in the __ of the buccal surface |
Maxillary molars: 3 roots (mesiobuccal, distobuccal, and palatal) Mandibular molars have 2 roots (mesial and distal) All are widermesiodistally thanpremolars that willreplace them -Prominent mesiobuccal bulges • Cervical lines curve apically inmesial half of buccal surface |
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Primary Second Molars -Resemble what molars of the permanent dentition? |
-Resemble First molars of primary dentition |
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Primary maxillary second molars (type trait) -Has 4 cusps plus Carabelli, Oblique ridge -BUT has mesiobuccal cusp almost equal to mesiolingual cusp (In permanent 1st molar, __ is largest) |
BUT has mesiobuccal cusp almost equal to mesiolingual cusp (In permanent 1st molar, mesiolingual cusp is largest) |
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Primary Mandibular second molars (type trait) – Five cusps: three buccal(mesiobuccal, distobuccal,distal) and two lingual(mesiolingual anddistolingual) BUT the distobuccalcusp is widest andmesiobuccal + distalcusps are almost samesize (while __ is smallest onpermanent first molars) |
BUT the distobuccal cusp is widest and mesiobuccal + distal cusps are almost same size (while distal cusp is smallest on permanent first molars) |
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Primary First Molar Traits - Occlusal view of __ resemble a? -Which resembles no other tooth/unlike any other tooth |
Occlusal view of aprimary maxillary firstmolar somewhatresembles a maxillarypremolar - (two prominent cusps =mesiobuccal andmesiolingual) but also verysmall distobuccal anddistolingual cusps (as onsecondary molars) - Crowns are slightly widerfaciolingually thanmesiodistally – Primary mandibular firstmolars resemble no othertooth |
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Primary Maxillary First molar May have __ cusps with a characteristic __ What is the largest of the cusps? |
May have 4-cuspswith a characteristicoblique ridge ML is the largest ofthe cusps |
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Primary Maxillary First Molar The more common 3-cusp form does nothave a __ andthe oblique ridgeblends with the distalmarginal ridge -May resemble a permanent premolar Crowns are wider than high (like permanent molars) Occlusal grooves may form an H pattern |
The more common 3-cusp form does nothave a DL cusp andthe oblique ridgeblends with the distalmarginal ridge |
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Primary Mandibular First Molar (Type Traits) resembles no other tooth, has 4 cusps - Very prominent __ cervical bulge with more apical cervical line in the __ half of the buccal surface - Has a prominent mesial transverse ridge and mesial marginal ridge. Also has a prominent? - Occlusal table is wider __ in the distal half -Very narrow in the faciolingual direction |
Very prominent mesiobuccalcervical ridge or bulge with moreapical cervical line in mesial half ofbuccal surface
- Prominent Mesiolingual cusp - Wider buccolingually |
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Primary Mandibular First Molar The distal portion of the occlusal surface has a deep occlusal sulcus (groove) -Most of the occlusal table lies __ to the transverse ridge |
- most of theocclusal table liesdistal to the transverseridge |
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Primary Mandibular First Molar • The facial view isunusual - thefaciocervical ridge ismuch more prominentat its __ end - The __ is considerably wider but only slightly higher than the __ |
• The facial view isunusual - thefaciocervical ridge ismuch more prominentat its mesial end • The MB cusp isconsiderable wider butonly slightly higherthan the DB |
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Primary Crown and Root Development • The crowns of all 20 primary teeth begin tocalcify between __ months in utero andtake about a year to calcify • Teeth erupt before their roots are complete • Primary tooth crowns are completed about__ before eruption and the roots arecompleted about __ after eruption |
- 4-6 months crown: 1 year before root: 1 year after |
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Permanent Crown and Root Development • Permanent crowns begin to calcify at birthand take about __ to calcify • Teeth erupt before their roots are complete • Permanent crowns are completed about __ before eruption and the roots arecompleted about __after eruption |
3 years crown: 3 years before root: 3 years after |
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• __ before __ inany class of teeth • Girls before boys - No teeth in mouth from? - eruption period forprimary dentition? - all primarydentition in mouth? - permanent 1stmolar appears? - permanentincisors in place? - canines andpremolars in place? - 2nd molars erupt? - mixed dentitionperiod? - 3rd molars erupt? |
• Lowers before uppers inany class of teeth - Birth to 6 months = no teethin mouth - 6 months - 2 years = eruption period forprimary dentition - 2 yrs-6 yrs = all primarydentition in mouth • 6 yrs = permanent 1stmolar appears - 6-9 yrs = permanentincisors in place - 9-12 yrs = canines andpremolars in place - 12 yrs = 2nd molars erupt - 6-12 yrs = mixed dentitionperiod - 17-21yrs = 3rd molars erupt |
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Primary teeth erupt between 6 months and 2 years and the sequence is? The first primary teeth to erupt are the __ (6 months) followed by the__, then the __ and__ (6-9 mos.) __ erupts at 12 months and thenanother tooth erupts about every 2 months |
incisors, 1st molars, canines, 2ndmolars 1st to erupt: mandibular central incisors - followed by the mandibular laterals - then the maxillary central incisors - then the mandibular lateral incisors Primary first molar |
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Eruption of Permanent Teeth
• Mandibular 1st molar erupts at __ followedclosely by maxillary 1st molar - Incisors erupt between __ • Canines and premolars erupt between __ yrs. (mand. Canine, mand 1st premolar, max 1stpremolar, max 2nd premolar, mand 2nd premolar,max canine) • 2nd molars erupt at __ and 3rds at __ years |
• Mandibular 1st molar erupts at 6 yrs followedclosely by maxillary 1st molar
• Incisors erupt between 6-9 years • Canines and premolars erupt between 9-12 yrs. (Mand. Canine, mand 1st premolar, max 1stpremolar, max 2nd premolar, mand 2nd premolar,max canine) • 2nd molars erupt at 12-14 yrs and 3rds at 17-21years |
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