Dental Anatomy Review Part 1 (general forms n stuff)

Question 1

Is the oblique ridge considered a transverse ridge? What two cusps does it connect?

Answer 1

No, it does not connect triangular ridges. Its a “special kind” of transverse ridge. It connects the ML and DF cusps

Question 2

Which anterior teeth are the ONLY ones to have a LINGUAL ridge? What are its boundaries?

Answer 2

the canines, from the cusp tip to the cingulum

Question 3

Where are there never lingual heights of contour?

Answer 3

in the cervical part of the crown

Question 4

Which develops first: positive anatomy or negative anatomy?

Answer 4

positive anatomy…..negative anatomy is a result of positive anatomy

Question 5

Which direction does calcification of the tooth occur?

Answer 5

from incisal edge/cusp tip then APLICALLY to the apex of the root

Question 6

Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) ….. What is the FIRST primary tooth crown to be completed? When?

Answer 6

MAXILLARY central incisors (interesting cause mandibular erupt first)…

Question 7

Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the maxillary lateral incisors complete?

Answer 7

2.5 months

Question 8

Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the maxillary canines complete?

Answer 8

9 months

Question 9

Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the maxillary 1st molars complete?

Answer 9

6 months

Question 10

Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the maxillary 2nd molars complete?

Answer 10

11 months (last ones dawg)

Question 11

Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) What is the last primary crown to be completed? When?

Answer 11

the maxillary 2nd molars…11months

Question 12

Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the mandibular central incisors completed?

Answer 12

2.5 months

Question 13

Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the mandibular lateral incisors completed?

Answer 13

3 months

Question 14

Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the mandibular canines completed?

Answer 14

9 months

Question 15

Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the mandibular 1st molars completed?

Answer 15

5.5 months

Question 16

Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the mandibular 2nd molars complete?

Answer 16

10 months

Question 17

Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) ALL PRIMARY CROWNS ARE COMPLETED BY ______ of AGE.

Answer 17

ONE YEAR

Question 18

Chaart #Dos-Root completion of primary teeth… What are the three sets of teeth to have their roots form first? When?

Answer 18

Maxillary & Mandiublar Central Incisors & Mandibular Lateral incisors…1.5 years

Question 19

Chaart #Dos-Root completion of primary teeth… When are the maxillary lateral incisors done?

Answer 19

2 years

Question 20

Chaart #Dos-Root completion of primary teeth… when are the maxillary canines done?

Answer 20

3.25 years (LAST to finish…must be that long ass root)

Question 21

Chaart #Dos-Root completion of primary teeth…When are the maxillary first molars done?

Answer 21

2.5 years

Question 22

Chaart #Dos-Root completion of primary teeth… When are the maxillary 2nd molars done?

Answer 22

3 years

Question 23

Chaart #Dos-Root completion of primary teeth…When are the mandibular canines done?

Answer 23

3.25 (same as maxillary, LAST roots to form)

Question 24

Chaart #Dos-Root completion of primary teeth… when are the mandibular 1st molars done?

Answer 24

2.25 years (maxillary 1st molars are 2.5 years)

Question 25

Chaart #Dos-Root completion of primary teeth...When are the mandibular 2nd molars done?

Answer 25

3 years (same as maxillary)

Question 26

What are the only two crowns to have completely formed at birth????

Answer 26

primary mandibular central incisors and primary mandibular 1st molars!

Question 27

AT 20 MONTHS of age, what are the only primary teeth to have not erupted yet?

Answer 27

2nd molars

Question 28

Primary 2nd molars are the only primary teeth to have not erupted at _____ months.

Answer 28

20 months

Question 29

Anterior tooth spacing has STOPPPPED expanding by age _____.

Answer 29

6

Question 30

What are the three groups of teeth that their crowns have completely calcified by age 6?

Answer 30

1. all permanent incisors 2.all first premolars 3.all permanent 1st molars

Question 31

LAY UP! Permanent 1st molars (mand and max) erupt at ___ years of age.

Answer 31

6

Question 32

Did you know? Primary Dentition eruption facts... calcification begins at ___ weeks in utero and ALL have started by ___ weeks.

Answer 32

13...18

Question 33

Did you know? Primary Dentition eruption facts..._______ teeth usually erupt before their namesakes in the opposing _______.

Answer 33

mandibular before maxilla!!

Question 34

Did you know? Primary Dentition eruption facts...Who erupts first? Males or females?

Answer 34

typically FEMALES

Question 35

Did you know? Primary Dentition eruption facts... The last primary tooth emerges is this ______ and it happens at this age ______. BOOM

Answer 35

Maxillary 2nd Molar...29 months (2.416 years)

Question 36

Did you know? Primary Dentition eruption facts...Root formation is complete for all primary teeth by _____ years.

Answer 36

3.25 years

Question 37

Did you know? Primary Dentition eruption facts...Primary occlusion is evident at ___ years...Thats why they visit the dentist for the 1st time!

Answer 37

3 years

Question 38

What are the 5 groups of teeth that are succedaneous?

Answer 38

1.centrals 2.laterals 3.canines 4.1st PMs 5.2nd PMs

Question 39

What are the 4 PERMANENT teeth that are initiating CALCIFICATION from BIRTH to ONE year of age?

Answer 39

1.First Molar (coming in at 6yrs) 2.Central Incisor (coming in at 6 years) 3. Canine (coming in at 10 years) 4.Lateral Incisor (coming in at 8 years)

Question 40

What are the 2 PERMANENT teeth that are initiating CALCIFICATION from 2 to 4 years of age?

Answer 40

1.All PreMolars 2.2nd Molars

Question 41

What is the only permanent tooth that is initiating CALCIFICATION at 9 years of age?

Answer 41

wizzys yo

Question 42

How old am I??? The mandibular second premolar emerges slightly before the maxillary canine...

Answer 42

11 years (all teeth are in EXECPT for the mand 2nd PM, canines, and 2nd/3rd molars)

Question 43

Mammalian Phylogenic Development- What do I call a single cone structure? (eg. bony fish/gators, human incisors?)

Answer 43

Hap-lo-dont

Question 44

Mammalian Phylogenic Development-What do I call THREE cusps in a straight line? (e.g..possum)

Answer 44

TRI-co-no-dont

Question 45

Mammalian Phylogenic Development- What do I call THREE cusps in a primary triangle? (e.g.. humans?)

Answer 45

TRI-tuber-cular molars

Question 46

Mammalian Phylogenic Development-What do I call FOUR cusps in a rectangular or rhomboid form? (e.g.. humans?)

Answer 46

Quadri-tuber-cular Molars

Question 47

What are the three cusps of the trigon primary cusp triangle? Which teeth exhibit this?

Answer 47

MF, DF, and ML cusps of all Maxillary molars

Question 48

When looking at maxillary teeth alignment, what tooth has the LEAST deviation from the vertical axis from a FACIAL view? Which tooth has the least deviation from the vertical axis from a PROXIMAL view?

Answer 48

facial=maxillary central incisor, proximal=first PM

Question 49

When looking at mandibular teeth alignment, what tooth has the LEAST deviation from the vertical axis from a FACIAL view? Which tooth has the least deviation from the vertical axis from a PROXIMAL view?

Answer 49

facial=mand lat incisor, proximal=all PMs

Question 50

What are the only two teeth that have only 1 antagonist in the opposing arch?

Answer 50

Mand cent incisors, max 3rd molars

Question 51

What is the shape of an anterior tooth's proximal contact?

Answer 51

ovoid (in a incisogingival manner)

Question 52

When looking at anterior teeth proximal contacts, which embrasure is larger: gingival or incisal?

Answer 52

gingival is much larger to promote tissue and bone growth!

Question 53

Where are the locations of all the MAXILLARY proximal contacts?

Answer 53

I J, J M, J M....midline-Incisal 1/3, distal of central-junctionof incisal and middle 1/3s, mesial of lateral-junction of incisal and middle thirds, distal of lateral-middle 1/3, mesial of canine-junction of incisal and middle 1/3s, distal of canine-middle 1/3

Question 54

Where are the locations of all the Mandibular proximal contacts?

Answer 54

I I, I I, I M (all incisal except for the distal of the canine)

Question 55

ALL maxillary anterior teeth have the same amount of contour and the same location...what are they??

Answer 55

0.5 mm of contour and they are all in the cervical 1/3 (facial and lingual are the same)

Question 56

The maxillary posterior teeth all share the same amount of contour but can vary on the location depending on the facial contour or lingual contour....What is the amount of contour and where are they?

Answer 56

0.5 mm and facial contour is in cervical 1/3 whereas the lingual contour is in the middle 1/3

Question 57

Cervical line curve-mandibular teef... the cervical line curves in a ______ direction on the proximal surface.

Answer 57

coronal

Question 58

Cervical line curve-mandibular teef... which have more curvature? the anterior teeth or the posterior?

Answer 58

anterior teeth have the most measurable curvature...posteriors have very little

Question 59

Cervical line curve-mandibular teef... The curvature is always GREATEST on the ______ side of the tooth.

Answer 59

MESIAL

Question 60

Cervical line curve-mandibular teef...the mesial curvature on the central is ____mm (the largest!)....the distal is ___mm

Answer 60

3mm on mes....2mm on dist

Question 61

the PDL attaches tooth to alveolar bone via insertion into the _______ and the ______.

Answer 61

cementum and bone

Question 62

Does the PDL have innervation?

Answer 62

YESSSSS you can feel every little tooth movement

Question 63

PDL-_____ fibers are known to resist forceful impaction of a tooth into the alveolus..._____ fibers help maintain contiguous proximal contact.

Answer 63

oblique...transseptal

Question 64

What is the largest embrasure in the maxilla?

Answer 64

D of canine, M of 1st PM

Question 65

What is the smallest embrasure in the maxilla?

Answer 65

M of centrals

Question 66

EMBRASURES- In the MAXILLARY arch, the FACIAL embrasures are ______ than their respective LINGUAL embrasures. EXCEPT!!!!!!!! surrounding which tooth???!?!?

Answer 66

Facial are SMALLER then Lingual EXCEPT the Max 1st Molar

Question 67

______ portions of crowns are generally MORE developed than the ______

Answer 67

mesial more developed than distal

Question 68

______ cusps are LARGER then ______ cusps

Answer 68

mesial LARGER than DISTAL

Question 69

The ______ marginal ridges are USUALLY TALLER than the ______ marginal ridges....WHAT IS OUR EXCEPTION???

Answer 69

Mesial taller than DISTAL....except Mand 1st PM

Question 70

Molars taper in a _______ direction.

Answer 70

mesiodistal

Question 71

All teeth taper F to L EXCEPT these two teeth...

Answer 71

Maxillary 1st Molar (making the lingual embrasure smaller than the Facial) and the Y-grooved mand 2nd PM!!