Examen I Flashcards
Which two surfaces of a tooth CANNOT be “proximal”? What are the axial surfaces?
Facial & Lingual..Axial Surfaces=F,L,M,D
What is the oblique ridge ALSO referred to? What two cusps are making this guy?
A “special kind” of Transverse ridge. ML cusp—>DF cusp
What is a depression/valley/space on the surface of a tooth between two ridges? What is at the bottom of this space?
A SULCUS…..A GROOVE
What is the LAST PRIMARY tooth to calcify? What WEEK in utero does the late guy calcify?
Maxillary 2nd molars…19 weeks
What are the FIRST primary teeth to exfoliate? WHEN?
BOTH mandibular and maxillary Central Incisors…6.5 Years (SO just as the first permanent teeth are coming in!)
What is the LAST primary tooth to peace out? WHEN? WHAT is it REPLACED by?
Maxillary Second Molars….11 yrs…Replaced by Perm Max 2nd PreMolar
What are the first permanent teeth to erupt? WHEN?
The Max AND Man 1st molars..6yrs
What ARE the permanent TEETH to complete their root formation FIRST? WHEN?
The Max AND Man 1st molars & MAN central incisors…9 years of age…makes sense, they are all the first teeth in..
By what age have all permanent INCISOR tooth roots formed?
11 yrs
What is the OVERDEVELOPMENT of either the distal cusp ridge of the ML cusp or the mesial cusp ridge of the DL cusp on a permanent mandibular molar?
Tuberculum Intermedium (Tuber=swelling, Tuberculum= small swelling)
Plane of Occlusion: The IDEAL plane is NOT _____.
FLAT
Plane of Occlusion: A flat plane allows for too many ______ on posterior teeth on both sides of the mouth.
Contacts
Plane of Occlusion: The proper plane of occlusion will permit ________ functional contacts to occur in ________ areas of the dental arch.
simultaneous….controlled
Plane of Occlusion: A ______ plane permits maximum use of tooth contacts during function.
Curved
Plane of Occlusion: The teeth are strategically positioned in the arches at varied and coordinated degrees of ________.
inclination
WHERE are the contacts for each mandibular anterior? M of Central:____ D of Central:_____ M of Lateral:_____ D of Lateral:____ M of Canine:_____ D of Canine:_____
M of Central:_Incisal___ D of Central:__Incisal___ M of Lateral:__Incisal ___ D of Lateral:__Incisal__ M of Canine:___Incisal__ D of Canine:__Middle___
Height of Contour-Mandibular arch: All facial surfaces (in mm and 1/3)
0.5mm…cervical 1/3
Height of Contour-Mandibular arch: Anterior teeth Lingual surface (mm and 1/3)
0.5mm…cervical 1/3
Height of Contour-Mandibular arch: first premolar lingual surface (mm and 1/3)
0.5mm…middle 1/3
Height of Contour-Mandibular arch: second premolar lingual surface (mm and 1/3)
0.75mm….middle 1/3
Height of Contour-Mandibular arch: molar lingual surface (mm and 1/3)
1.0mm…..middle 1/3
Oblique PDL fibers are known to resist _______ ________ of a tooth into the alveolus, consistent with many types of ______.
Forceful Impaction….Trauma
________ fibers help maintain contiguous proximal contact.
Transseptal
An EMBRASURE can exist, even in situations when there is a ________ between the proximal contact!
Diastema (its not necessary for the adjoining teeth to physically touch in order for embrasures to be exhibited)
In an ideal embrasure construct, every contact area produces how many embrasures?
4
Which tooth is the ONLY one with SMALLER LINGUAL embrasures then facial embrasures?
MAXILLARY first molar (crown tapers to the facial)
In the maxillary arch, the Facial embrasures are ______ then the Lingual Embrasures EXCEPT surrounding the ______ _______ _______!!!
F SMALLER then L…EXCEPT surrounding the MAXILLARY FIRST MOLAR (think TAPER…lingual is larger then facial so less lingual embrasure)
Concerning Primary VS Permanent Crowns: The enamel is relatively _____ & has consistent _______.
Thin…..depth
Concerning Primary VS Permanent Crowns: The _____ thickness between the pulp chambers & the enamel is LIMITED.
Dentin
Concerning Primary VS Permanent Crowns: The pulp horns are _____ and the pulp chambers are proportionally _____.
HIGH….Large
Concerning Primary VS Permanent Crowns: Primary pulp horns protrude higher underneath crown heights because their ______ thickness is minimal, compared to permanent teeth.
Dentin
Incisal View-PRIMARY Max Lat Incisor: the Incisal Ridge is CURVED toward the ______ surface.
DISTAL
Lingual View-Primary Max First Molar: The ___ cusp IF VISIBLE is small.
DL
Facial View–Primary Mandibular First Molar: The ___ cusp is LARGER and Taller then the ___ cusp.
MF cusp is larger and taller then DF cusp (normal)
Facial View–Primary Mandibular First Molar: There is a short or indistinct facial ______ that looks more like a depression.
Groove
Facial View–Primary Mandibular First Molar: The _____ _____ significantly points or dips apically onto the mesial root surface on the ______ half of the tooth.
cervical line…..mesial
Facial View–Primary Mandibular First Molar: The cervical _____ is quite convex in the ______ half and FADES OUT onto the ___ Cervical Third.
Ridge….Mesial….DF
Facial View–Primary Mandibular First Molar: The mesial root is much _____ and more ______ then the distal root.
LONGER….straight
Occlusal View-Primary Mandibular Second Molar: The tooth possesses a long and winding ____ _____.
Central Groove
Occlusal View-Primary Mandibular Second Molar: There is a distinct mesial marginal ____ ____. Haha funny name
mesial marginal ridge groove
Occlusal View-Primary Mandibular Second Molar: The distal marginal ridge has a “_____” instead of a groove that splits into two segments.
“notch”
Occlusal View-Primary Mandibular Second Molar: ___ and ___ developmental grooves separate the 3 cusps.
MF and DF
Occlusal View-Primary Mandibular Second Molar: A single _____ _____ separates the ML and DL cusps.
lingual groove
Occlusal View-Primary Mandibular Second Molar: Major fossae include the _____ fossa, _____ triangular fossa, & ____ triangular fossa.
central, mesial, & distal
Occlusal View-Primary Mandibular Second Molar: There are SIGNIFICANT triangular ridges located on each cusp but none of them meet to form a ________ _____.
transverse ridge (none of them line up!!)
Where is the most common location in the mandible for a supernumerary tooth to exist?
Mandibular Second PreMolar
What arises through the UNION of two normally separated tooth germs and may be complete or incomplete?
Tooth Fusion (I WONDER HOW THIS RELATES to dental stem cells??)
In tooth fusion: Two independent pulp ______ and root _____ can be seen.
chambers…canals
In tooth fusion: Fusion can also be the union of a normal tooth ______ & a _________ tooth germ!
bud & a supernumerary tooth germ!
In tooth fusion: Which sets of teeth are most commonly seen with this anomaly??
MAXillary 2nd and 3rd molars
In tooth fusion: it ALWAYS involves the what layer of the tooth??
DENTIN
Facial Aspect Root Structure-Perm Max Cent Incisor: Outine of the root is _____ shaped and a _____ apex usually located slightly _____ to the center line of the tooth.
CONE….BLUNT….DISTAL
Facial Aspect Root Structure-Perm Max Cent Incisor: Are there root surface developmental depressions?? Is this easy or difficult to extract?
NO evidence of them….EASY to extract
Facial Aspect: Perm Max Lat Incisor: The crown length is ____mm shorter then the central.
1.0-1.5mm
Facial Aspect: Perm Max Lat Incisor: The crown width is ___mm less then the central giving the impression that the maxillary lat incisor is relatively ____ & ______.
2.0mm…long & narrow
Facial Aspect: Perm Max Lat Incisor: The root apex has a _____ curvature.
DISTAL…DUH!!!
Distal Aspect-Perm Max Lat Incisor: The incisal _____ and ____ _____ will NOT be in line with each other.
ridge…root apex
Distal Aspect-Perm Max Lat Incisor: The incisal ridge is ______ FacioLingually over the crown and main body of the root.
CENTERED
Mesial View-Perm Man Cent Incisor: The incisal edge will be ______ to the FL long axis bisector.
Lingual
Mesial View-Perm Man Cent Incisor: The enamel on the facial surface will extend apically about ____mm more than it does on the lingual.
0.5mm
Facial View-Permanent Mandibular Lateral Incisor: The incisal edge is ______ but it may appear slanted toward the _____.
Straight…Distal
Facial View-Permanent Mandibular Lateral Incisor: The mesial incisal line angle is said to be a _____ ____ degree angle; the Distal incisal angel is usually more ______.
mesial: Sharp 90 degree….. distal: rounded
Facial View-Permanent Mandibular Lateral Incisor: Proximal contacts are both within the incisal ___ of the crown and are CONSIDERED to be at essentially (NOT EXACTLY) the _____ _____.
incisal 1/3…same level….ACUTALLY distal is more Cervial WTF
Facial View-Permanent Mandibular Lateral Incisor: The distal contact is always considered to be slightly ______ then the mesial contact area.
Cervical
Facial View-Permanent Mandibular Lateral Incisor: There is often more curvature in the _____ crown outline; therefore the crown is NOT considered _______ from the facial view.
distal….not considered symmetrical
Distal View-perm man lat incisor: The incisal ridge is slighly toward the _____ surface when compared to the FL long axis bisector that travels through the root apex.
Lingual
Facial View-Perm Max Canine: The cusp tip is either in line or slightly _____ to the vertical center of the tooth.
mesial
Facial View-Perm Max Canine: The mesial cuspal ridge is ______ then the distal cuspal ridge.
Shorter (HENCE why the cusp tip is mesial)
Facial View-Perm Max Canine: The apical 1/3 of the root has a ______ curvature. But what else COULD it be?
Distal…DUH! But it COULD me mesial or straight. hahahaha so everything!
Facial View-Perm Max Canine: Where is the cusp tip NEVER located?
Distal
Distal View- Perm Max Canine: The cusp tip is aligned with the ____ ____, and the _____ __ ______ on the cervical line.
root tip…..height of curvature
Distal View- Perm Max Canine: There is a PRONOUNCED _______, which is cervical to the distal contact area (this is minimally present on the ______ root surface)
CONCAVITY…mesial
Mesial View-Perm Man Canine: The cusp tip is _______ to the FL bisector.
Lingual (the max teeth need to fit over it!)
Mesial View-Perm Man Canine: There is a significant incisal curvature of the _____ _____ (more so than on the max canine).
Cervical Line
Mesial View-Perm Man Canine: The ________ is not pronounced.
cingulum
Mesial View-Perm Man Canine: A root surface developmental depression is ________ & _____ on the root (THIS increases the possibility of what???)
Pronounced & Deep…… (Two Roots or Two canals!)
Perm Max First Premolar-Lingual: The lingual cusp is _____ pointed and about __mm shorter then the facial cusp.
less…..1.0mm
Perm Max First Premolar-Lingual: The lingual cusp is slightly _______ to the MD long axis bisector; therefore the mesial cuspal ridge will be ______ than the distal cuspal ridge.
mesial….shorter
Perm Max First Premolar-Lingual: It is characteristic of the lingual cusps of both max premolars to “_____” or “point” to the _____.
Swing….mesial
Perm Max First Premolar-Lingual: The mesial and distal outlines of the lingual cusp will both be slightly ______.
Convex
Perm Max First Premolar-Lingual: A small amount of both the mesial and distal surfaces of the crown will be ______.
VISIBLE!!
Perm Max First PreMolar-Mesial: The mesial cuspal ridges of the facial and lingual cusps converge to meet the mesial _______ ______. The crest of this structure is almost _______ to the FL long axis bisector.
mesial marginal ridge….perpendicular
Perm Max First PreMolar-Mesial: The mesial marginal ridge is divided into F and L segments by the _____ ______ DEVELOPMENTAL GROOVE.
MESIAL MARGINAL DEVELOPMENTAL GROOVE
Perm Max First PreMolar-Mesial: The MESIAL MARGINAL DEVELOPMENTAL GROOVE crosses the ridge from the _______ surface and extends onto the ______ surface.
Occlusial…mesial
Perm Max First PreMolar-Mesial: The ______ _______ ________ must ALWAYS be of concern to the dentist during restorative and periodontal Tx.
MESIAL DEVELOPMENTAL DEPRESSION
Perm Max First PreMolar- Occlusial: The Crest of the lingual segmment lingually is distinctly ______ to the MD bisector of the crown.
mesial (pinched look)
Perm Max First PreMolar- Occlusial: The mesial and distal cuspal ridges of the _____ cusp are in line with each other but angle slightly across the surface. The mesial end of the connected cuspal ridge line is more _____ than the distal end.
facial…..lingual (that PINCHED look!)
Perm Max First PreMolar- Occlusial: The facial cusp tip is _____ to the MD bisector and ___ the distance from the facial outline of the FL bisector.
distal (“twisted” look)…1/3 the distance
Perm Max Second PreMolar-Lingual: Occlusially the outline of both cusps is ______. The tip of the lingual cusp is __ ____ with the tip of the facial cusp.
visible…..in line
Perm Max Second PreMolar-Lingual: The lingual cusp is nearly _____ in height and a little more ______ ( less ______) than the facial cusp.
Equal….rounded (less pointed)
Perm Max Second PreMolar-Lingual: The cuspal ridges of the lingual cusp will not be as ______ occlusially as those of the facial cusp and will present the same _____ of slant from the tip of the cusp.
high….angle
Perm Max Second PreMolar-Occlusial: The tooth has mesial and distal ______ ______ that are IRREGULARLY shaped.
Triangular Fossae
Perm Max Second PreMolar-Occlusial: The odd triangular fossae are nearer the ______ of the tooth when compared to the triangular fossae on the ______ ______ _____.
Center….Max First PreMolar
Perm Max Second PreMolar-Occlusial: Has a relatively ______ central groove and relatively _____ marginal ridges.
short….wide
Perm Man First PreMolar-Lingual: The lingual cusp has consistent _______ qualities to the anatomy.
Cingulum!
Perm Man First PreMolar-Lingual: The lingual cusp tip is approx ___ the height of the facial cusp tip.
2/3’s the height
Perm Man First PreMolar-Lingual: A ______ & ______ lingual cusp tip is evident.
Pointed & centered
Perm Man First PreMolar-Mesial: A very short and somewhat horizontally positioned lingual cusp _______ _____ is seen.
triangular ridge
Perm Man First PreMolar-Mesial: The central groove is positioned on the ______ portion of the crown.
lingual
Perm Man First PreMolar-Mesial: There is a ___ degree angle to the crest of the mesial marginal ridge.
45 degree
Perm Man First PreMolar-Mesial: A distinct ___ ______ is present that is located at the ML line angle, but is not continuous with the ML coronal _________.
ML groove…..depression
Perm Man First PreMolar-Occlusial: The mesial triangular fossa has a mesial groove at the bottom of it that is ______ in shape and is continuous with the ML groove.
linear
Perm Man First PreMolar-Occlusial: At the bottom of the distal triangular fossa is a “______” shaped distal groove.
“comma”
Perm Man First PreMolar-Occlusial: The central groove is located on the _______ side of the tooth and will “_____” or be oriented toward the lingual surface.
lingual…“bend”
Perm Man Second Premolar-Lingual: The 3 cusp variety has 2 ______ cusps with a ______ groove between both.
lingual….lingual
Perm Man Second Premolar-Lingual: The lingual groove is _______ positioned.
distally
Perm Man Second Premolar-Lingual: The ML cusp tip is approx ____mm shorter then the facial cusp tip.
1.5mm
Perm Man Second Premolar-Lingual: The DL cusp tip is about ___mm shorter then the facial cusp tip.
2.0mm
Perm Man Sec PreMolar-Occlusial: There are _____ _____ connections that are evident between the cuspal ridges and adjacent marginal ridges.
right angle
Perm Man Sec PreMolar-Occlusial: The 3 cusp variety does not have a _______ _______.
transverse ridge
Perm Man Sec PreMolar-Occlusial: The central groove has a mesial and distal component to it and is ______ positioned.
lingually
Perm Man Sec PreMolar-Occlusial: On the 3 cusp variety, the outline of the developmental groove is a “__” shaped pattern.
“Y”