Dental Anatomy Review Part 1 (general forms n stuff) Flashcards
Is the oblique ridge considered a transverse ridge? What two cusps does it connect?
No, it does not connect triangular ridges. Its a “special kind” of transverse ridge. It connects the ML and DF cusps
Which anterior teeth are the ONLY ones to have a LINGUAL ridge? What are its boundaries?
the canines, from the cusp tip to the cingulum
Where are there never lingual heights of contour?
in the cervical part of the crown
Which develops first: positive anatomy or negative anatomy?
positive anatomy…..negative anatomy is a result of positive anatomy
Which direction does calcification of the tooth occur?
from incisal edge/cusp tip then APLICALLY to the apex of the root
Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) ….. What is the FIRST primary tooth crown to be completed? When?
MAXILLARY central incisors (interesting cause mandibular erupt first)…
Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the maxillary lateral incisors complete?
2.5 months
Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the maxillary canines complete?
9 months
Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the maxillary 1st molars complete?
6 months
Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the maxillary 2nd molars complete?
11 months (last ones dawg)
Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) What is the last primary crown to be completed? When?
the maxillary 2nd molars…11months
Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the mandibular central incisors completed?
2.5 months
Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the mandibular lateral incisors completed?
3 months
Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the mandibular canines completed?
9 months
Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the mandibular 1st molars completed?
5.5 months
Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) When are the mandibular 2nd molars complete?
10 months
Primary Crown Completion Schedule (70% MISS RATE…LETS GET IT!!!!) ALL PRIMARY CROWNS ARE COMPLETED BY ______ of AGE.
ONE YEAR
Chaart #Dos-Root completion of primary teeth… What are the three sets of teeth to have their roots form first? When?
Maxillary & Mandiublar Central Incisors & Mandibular Lateral incisors…1.5 years
Chaart #Dos-Root completion of primary teeth… When are the maxillary lateral incisors done?
2 years
Chaart #Dos-Root completion of primary teeth… when are the maxillary canines done?
3.25 years (LAST to finish…must be that long ass root)
Chaart #Dos-Root completion of primary teeth…When are the maxillary first molars done?
2.5 years
Chaart #Dos-Root completion of primary teeth… When are the maxillary 2nd molars done?
3 years
Chaart #Dos-Root completion of primary teeth…When are the mandibular canines done?
3.25 (same as maxillary, LAST roots to form)
Chaart #Dos-Root completion of primary teeth… when are the mandibular 1st molars done?
2.25 years (maxillary 1st molars are 2.5 years)
Chaart #Dos-Root completion of primary teeth…When are the mandibular 2nd molars done?
3 years (same as maxillary)
What are the only two crowns to have completely formed at birth????
primary mandibular central incisors and primary mandibular 1st molars!
AT 20 MONTHS of age, what are the only primary teeth to have not erupted yet?
2nd molars
Primary 2nd molars are the only primary teeth to have not erupted at _____ months.
20 months
Anterior tooth spacing has STOPPPPED expanding by age _____.
6
What are the three groups of teeth that their crowns have completely calcified by age 6?
- all permanent incisors 2.all first premolars 3.all permanent 1st molars
LAY UP! Permanent 1st molars (mand and max) erupt at ___ years of age.
6
Did you know? Primary Dentition eruption facts… calcification begins at ___ weeks in utero and ALL have started by ___ weeks.
13…18
Did you know? Primary Dentition eruption facts…_______ teeth usually erupt before their namesakes in the opposing _______.
mandibular before maxilla!!
Did you know? Primary Dentition eruption facts…Who erupts first? Males or females?
typically FEMALES
Did you know? Primary Dentition eruption facts… The last primary tooth emerges is this ______ and it happens at this age ______. BOOM
Maxillary 2nd Molar…29 months (2.416 years)
Did you know? Primary Dentition eruption facts…Root formation is complete for all primary teeth by _____ years.
3.25 years
Did you know? Primary Dentition eruption facts…Primary occlusion is evident at ___ years…Thats why they visit the dentist for the 1st time!
3 years
What are the 5 groups of teeth that are succedaneous?
1.centrals 2.laterals 3.canines 4.1st PMs 5.2nd PMs
What are the 4 PERMANENT teeth that are initiating CALCIFICATION from BIRTH to ONE year of age?
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)
What are the 2 PERMANENT teeth that are initiating CALCIFICATION from 2 to 4 years of age?
1.All PreMolars 2.2nd Molars
What is the only permanent tooth that is initiating CALCIFICATION at 9 years of age?
wizzys yo
How old am I??? The mandibular second premolar emerges slightly before the maxillary canine…
11 years (all teeth are in EXECPT for the mand 2nd PM, canines, and 2nd/3rd molars)
Mammalian Phylogenic Development- What do I call a single cone structure? (eg. bony fish/gators, human incisors?)
Hap-lo-dont
Mammalian Phylogenic Development-What do I call THREE cusps in a straight line? (e.g..possum)
TRI-co-no-dont
Mammalian Phylogenic Development- What do I call THREE cusps in a primary triangle? (e.g.. humans?)
TRI-tuber-cular molars
Mammalian Phylogenic Development-What do I call FOUR cusps in a rectangular or rhomboid form? (e.g.. humans?)
Quadri-tuber-cular Molars
What are the three cusps of the trigon primary cusp triangle? Which teeth exhibit this?
MF, DF, and ML cusps of all Maxillary molars
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?
facial=maxillary central incisor, proximal=first PM
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?
facial=mand lat incisor, proximal=all PMs
What are the only two teeth that have only 1 antagonist in the opposing arch?
Mand cent incisors, max 3rd molars
What is the shape of an anterior tooth’s proximal contact?
ovoid (in a incisogingival manner)
When looking at anterior teeth proximal contacts, which embrasure is larger: gingival or incisal?
gingival is much larger to promote tissue and bone growth!
Where are the locations of all the MAXILLARY proximal contacts?
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
Where are the locations of all the Mandibular proximal contacts?
I I, I I, I M (all incisal except for the distal of the canine)
ALL maxillary anterior teeth have the same amount of contour and the same location…what are they??
0.5 mm of contour and they are all in the cervical 1/3 (facial and lingual are the same)
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?
0.5 mm and facial contour is in cervical 1/3 whereas the lingual contour is in the middle 1/3
Cervical line curve-mandibular teef… the cervical line curves in a ______ direction on the proximal surface.
coronal
Cervical line curve-mandibular teef… which have more curvature? the anterior teeth or the posterior?
anterior teeth have the most measurable curvature…posteriors have very little
Cervical line curve-mandibular teef… The curvature is always GREATEST on the ______ side of the tooth.
MESIAL
Cervical line curve-mandibular teef…the mesial curvature on the central is ____mm (the largest!)….the distal is ___mm
3mm on mes….2mm on dist
the PDL attaches tooth to alveolar bone via insertion into the _______ and the ______.
cementum and bone
Does the PDL have innervation?
YESSSSS you can feel every little tooth movement
PDL-_____ fibers are known to resist forceful impaction of a tooth into the alveolus…_____ fibers help maintain contiguous proximal contact.
oblique…transseptal
What is the largest embrasure in the maxilla?
D of canine, M of 1st PM
What is the smallest embrasure in the maxilla?
M of centrals
EMBRASURES- In the MAXILLARY arch, the FACIAL embrasures are ______ than their respective LINGUAL embrasures. EXCEPT!!!!!!!! surrounding which tooth???!?!?
Facial are SMALLER then Lingual EXCEPT the Max 1st Molar
______ portions of crowns are generally MORE developed than the ______
mesial more developed than distal
______ cusps are LARGER then ______ cusps
mesial LARGER than DISTAL
The ______ marginal ridges are USUALLY TALLER than the ______ marginal ridges….WHAT IS OUR EXCEPTION???
Mesial taller than DISTAL….except Mand 1st PM
Molars taper in a _______ direction.
mesiodistal
All teeth taper F to L EXCEPT these two teeth…
Maxillary 1st Molar (making the lingual embrasure smaller than the Facial) and the Y-grooved mand 2nd PM!!
