Language of Dentistry Flashcards
Towards the midline
Mesial
Away from the midline
Distal
Upper
Superior
Lower
Inferior
Looking at the way teeth move medial and laterally
Dynamic Occlusion
Canine to canine
Anterior
Premolar & molars
Posteriors
Anterior & posterior movement
Potrusion
Superior & inferior movement
Opening
Towards the apex
Apical
To the lips
Labial (anterior teeth)
Tongue side
Lingual
Bitting surface of anteriors
Incisal
Toward cheeks
Buccal (posterior teeth)
Towards palette on maxillary
Paletal
Area where mesial and distal surfaces touch
Proximal
Occlusal Surface
Posterior teeth
Where two sides of a tooth meet in a line.
Line angle/ surface junction
Surface junction or dimension?
Ex. Distolabial
Surface junction
Surface junction or dimension?
Ex. Mesiobuccal
Surface junction
Point angles, it’s a dimension, sides don’t meet.
Dimension
Surface junction or dimension?
Ex. Mesiodistal
Dimension.
Surface junction or dimension?
Ex. Buccolingual
Dimension
Looking at the teeth from the front overall is a ____ view
Facial View
Looking at the teeth bitting from the side is an overall ___ view
Lateral view
Looking at either upper or lower from above is a ____ view
Occlusal view
How many views do you split each side of a tooth into?
3 views
Distal 3rd, middle 3rds, mesial 3rds
what side(s) of the tooth are you looking at?
Facial; labial or buccal view
Lingual 3rd, middle 3rds, Labial 3rd
what side(s) of the tooth are you looking at and is it posterior or anterior?
Mesial or distal view on an Anterior
Lingual 3rd, middle 3rds, Buccal 3rd
what side(s) of the tooth are you looking at and is it posterior or anterior?
Mesial or distal view of a posterior tooth.
What three sections do you split the root of the tooth into?
cervical 3rd, middle 3r, apical 3rd
Cervical 3rd, middle 3rd, Occlusal 3rd
what side(s) of the tooth are you looking at and is it posterior or anterior?
Buccal or lingual view on a posterior
Ratio of the length of the root to the length of the crown or vice verse.
root/crown
Root to crown ratio
What does a small root to crown ration mean? ~1
Length of the crown and the root are similar
What does a small root to crown ration mean? <1
Smaller root than crown
If you were conducting a bridge prep and try to know if a tooth was a good candidate to be an anchor, how would you use the root to crown ratio to deduce candidacy of the tooth?
Small ratio= short root= bad anchor
Large ratio= long root= good anchor
Most cusps are named after what?
Closest tooth surface or line angle
Arms that come off a cusps, they portrude are called?
Cusp ridge/arm
Ridges that form the mesial and distal borders of the lingual surfaces on anterior teeth
and the mesial and distal borders of occlusal surfaces on posterior teeth.
Marginal Ridge
Two ridges from one ___ or ____ ridge
Transverse or oblique
Anterior Canines have what ridges?
Labial ridge
Lingual ridge (subtle)
Outline formed by connection of all the ridges. Bound by 6 ridges. Chewing surface
Occlusal table
Outline surrounding the entire tooth when looking at it occlusal.
Occlusal Outline
A bulge on the cervical third of anterior teeth. Normally where marginal ridges converge.
Cingulmum
A ridge or bulge running mesiodistally in the cervical one third of the facial surface of crown (permanent molars)
Buccal Cervical Ridge; height of contour
Three small bulges or tubercles on the incisal edges of newly erupted incisors. Usually wear off with age.
Mamelons
Horizontal ridges on the enamel surface. Form from overlapping of layers of enamel lade down during tooth formation.
Perikymata
broad V-shaped depression or valley on the occlusal surface of each posterior teeth running mesiodistally between the buccal and lingual cusps
Sulcus/Groove
Major developmental, main large groove running m-d.
Separates the buccal & lingual cusps.
Central Groove
Multiple depression, shallow saucer like depressions.
Fossa
Groove that branches of central, onto the buccal and lingual cusps.
Fossa Groove
Marginal ridge groove and extra grooves are both what?
Minor (supplemental) groove.
How are grooves named?
For the the surface or line angle the aim towards!
Found at the depth of fossae and grooves caused by the incomplete fusion of enamel during tooth development
Grooves & Pits
Decay forms easily in what?
Grooves & Pits
Maxillary canines may have two ____ fossae separated by a ____ ridge
2 lineal fossae separated by a lingual ridge.
____ (tooth type) especially maxillary, have one broad shallow fossa.
Inscisors
_____ anterios have no pits but fossa is there.
Mandibular anteriors
Two-cusps pre-molars have ___ fossa’s in the ___ and ___
2 Cusps pre-molars:
2 Fossa, 1 mesial 1 distal
3-cusped pre-molars & most molars have ___ fossa’s in the ___, ____, and ___, with pits of same name
3 fossas
Mesial distal, central fossa
Common location fro pit:
___ on posteriors
Occlusal
Common location for pit:
___ on maxillary mollars
Lingual
Common location fro pit:
___ on mandibular
Buccal
Common location fro pit:
___ on maxillary incisors
Lingual
Location on the tooth where enamel meets the cement
Cementoenamel junction (CEJ)
Area on tooth where roots split
Frucation
CEJ on proximal view curves ____/_____
Occlusa/ incisal, (like a bowl)
CEJ on facial view curves toward ____
Root apex (an arch)
V-shaped depression formed by the continuation of the sulcuses of adjacent posterior teeth in a quadrant.
Sulcular Groove
Anteroposterior curve of Spee
The occlusal.
Maxillary curve of spee & mediolateral curve are:
Convex U
Mandibular curve of spee & mediolateral curve are:
Concave (an arch)
When a line connects the buccal and lingual cusps of the same type of molars and premolars on opposite sides of the arch, this side-to-side curve
Mediolateral Curve of Wilson
An imaginary line that divides the root and tooth into mesial and distal, or into facial and lingual)
Mid-Root axis line
Greatest bulges on the facial/buccal & lingual surfaces.
Crest of Curvatures
Mandibular molars have the mid root axis tipped ___
Lingually
Importance of the height right height of contour?
Prevents food impaction in the gingiva.
___ ____ protect gingiva from food impaction as well, need to be in the right spot
Contact areas
Proximal heights of contour
Contact Areas
Spaces between teeth
Diastema
When looking facially:
In terms of proximal contacts: As you are closer to the mesial they are located more ___.
Contact more distal are located more ___
Mesial= more insical
Distal= More cervical
When looking occlusal:
They are more ____ to the central line
More buccal
continuous space that surrounds each contact area can be divided into four somewhat triangular
Embrasure Spaces
What are the 4 kinds of embasures
-Facial, Buccal (wider)
-Inscial/occlusal & Cervical (normally covered by gums)
Which of the following bumps or ridges is NOT likely to be found on a maxillary premolar?
Oblique ridge & Cingulum
Which ridges help to surround the perimeter of the occlusal surface (occlusal table) of a two-cusped premolar?
-Mesial marginal ridge
-Distal marginal ridge
-Mesial cusp ridge of the buccal cusp
-Distal cusp ridge of the lingual cusp
On a two-cusped premolar, which ridges meet to form a transverse ridge?
-Triangular ridge of the lingual cusp
-Triangular ridge of the buccal cusp
Which of the following is (are) NOT a cusp found on three-cusped type premolars?
-Mesiobuccal
-Distobuccal
What is the correct order of anatomic landmarks of a tooth with two roots from the cementoenamel junction to the root tip?
Cervix, trunk, furcation, apex
When viewed from the proximal views, what is the location of the greatest bulge (crest of curvature or height of contour) on the facial surface of all teeth?
Cervical third
Which space(s) contain(s) the part of the gingiva known as the interdental papilla?
Cervical embrasure
Interproximal space
