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66 Cards in this Set
- Front
- Back
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Initiation of primary teeth ~ _____ weeks inuteroand calcification of central incisor ~___weeks in- utero
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6-8
14 |
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Initiation of permanent teeth is ~ ______weeks in- utero and calcification ~ after ____weeks in- utero
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14-19
28 |
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Life cycle of the tooth
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Initiation
proliferation histodifferentiation morphodifferentiation apposition calcification |
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Initiation (Bud Stage)
Cells in the ______ layer of the epithelium proliferate at a more rapid rate than do adjacent cells. |
basal
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Epithelial thickening in area of future dentalarch = dental lamina
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Initiation (Bud Stage)
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Primary teeth and permanent molars arise fromthe _______________
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dental lamina
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Proliferation is the ____________ stage
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cap
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Proliferation (Cap Stage)• ______ weeks•
Results from_________ • __________ cells later form the outer and inner enamelepithelium • Deficiency may result in failure of ______________ to develop • Excess proliferation may result in ___________ |
9-11
differential growth of the bud peripheral tooth germ epithelial rests (cyst,odontoma, supernumerary tooth) |
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The Bell stage consists of _______ and ___________
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Histo and Morphodifferentiation
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Histodifferentiation
_____ week cells of the dental papilla cells of the inner enamel epithelium |
14
odontoblasts ameloblasts |
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stage in which
Disturbances in differentiation of formativecells of tooth germ result in abnormal structureof enamel or dentin |
histodifferentiation
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Stage in which disturbance leads to abnormal forms and sizes of teeth
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morphodifferentiation
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Morphodifferentiation
______ week |
18th
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Formative cells are arranged to outline the form and sizeof the tooth
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Morphodifferentiation
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stage
Boundary between inner enamel epithelium andodontoblasts outlines the future dentinoenamel junction |
Morphodifferentiation
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stage
Matrix is deposited by formative cells, ameloblasts andodontoblasts, which line up along the future dentino -enamel and -cemental junction |
apposition
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stage
Dentin is formed before enamel and initiates theformation of enamel |
apposition
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stage
Matrix is deposited at definite pattern and rate |
apposition
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Disturbances and local trauma can injure ameloblastsand cause interruption or arrest __________
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matrix apposition
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a place or point in an organism where a germ or other organism can develop or breed.
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nidus
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Calcification begins at the _________ or ________ and proceeds ________
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cusp tips or incisal edge
cervically |
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First tooth erupts around _________
all primary teeth erupt by ________ |
6-10 months
3-4 yrs |
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When Do Primary Teeth Erupt?
Maxillary A B C D E |
8-12
9-13 16-22 13-19 25-33 |
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When Do Primary Teeth Erupt? Mandibular ABCDE |
6-10
10-16 17-23 14-18 23-31 |
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Maxillary Central Incisors•
Mesiodistal diameteris _______ than its cervicoincisal length• Root conicallyshaped; narrower |
greater
mesiodistally |
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Maxillary Lateral Incisors•
Cervicoincisal crownlength is greater than themesiodistal width• Smaller than central andhas __________ distalincisalangle• Root conically shaped;narrower mesiodistally• Lateral root is relatively________in proportion tocrown and its apex is |
rounded
longer |
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Maxillary Incisors
edge? mamelons? labial surface? relative to permanent? root? |
smooth and straight
no convex, rarely depressions more prominent cingulum, marginal ridge and lingual fossa conical, narrower MD |
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Mandibular centrals
Incisocervical dimension? root? |
greater thanMD
cylindrical |
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Well developed cusptip; offset to the distal
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Max Can
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Well developed cusptip; offset to the mesial
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Mand Can
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Unique appearance (somewhere between amolar and premolar)
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primary Max 1st M
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primary Max 1st M
cervical bulge? lgst root? |
MB
lingual |
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like perm 1st molar but smaller
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primary Max and Mand 2nd
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Larger crown? Max D or E?
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E
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Prominent oblique ridge
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Max E
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Mand D
crown width? ridge? cusps? |
MD>>BL
prominent transverse 4 |
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Mand E
cusps? roots? |
5
2 (M and D) |
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higher pulp horn?
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MB
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primary vs perm
crown? occlusal table? cervical bulge? contacts? MD width molar |
shorter
smaller larger broader wider |
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primary
root completion post eruption? root duration before resorption? |
1yr
3yr |
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UPPER LEEWAY/quadrant
Lower |
+0.9
+1.7mm |
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Amides
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(lidocaine, mepivicaine, prilocaine,articaine, bupivicaine)
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Esters
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(procaine, benzocaine, cocaine)
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local anesthetics
lipo or hydrophilic? |
both
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LA
Block influx of? |
Na
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LA
pKa close to tissue? |
rapid onset
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LA
molecular weight to potency? |
smaller = greater
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BP in anaphyaxis
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drops
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bisulfite allergy contraindicates
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vasoconstrictor
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sulfa allergy contraindicates
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articaine
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amide allergy prevalence?
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rare
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adverse LA rxn time
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5-10 min
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usual result LA OD
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death
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tinitus
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ringing ears
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diplopia
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double vision
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CNS rxn adverse
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biphasic (excitation then depression
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max dose
Lidocaine Articaine |
4.4 mg/kg (2/lb)
7 mg/kg (3/lb) |
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epi in 1.7ml 2% lido 1:100,000
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0.017 mg
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Maxillary needle
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30 short (20 mm)
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Mand needle
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30 short (20mm) w/ unerupted prem molar
27 long (32 mm) w/ erupted |
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TA effective depth
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2-3mm
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Mandibular foramen location?
primary? mixed? adult? |
slightly bellow occ plane
slightly above 7mm above |
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IAN Block
Injection must be made slightly lower andmore________________ than for adult patients |
posteriorly
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articaine =
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septocaine
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Articaine (Septocaine)§ Contains a ___________group that increases liposolubilityand potency
half life? mg /catridge min age? diffusion through bone? |
thiophene
68 4 greater |
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OraVerse (Phentolamine Mesylate)
for? mechanism? min age? min weight? |
LA reversal lip and tongue 2x faster
alpha anttagonist...vasodilator 6 15kg/33lb |
