Lecture 1 Introduction to dental anatomy Flashcards
Diagnostic wax up
A process in which wax is applied to a model of the patient’s teeth to simulate the procedure and results of planned reconstruction, repair, or enhancement
Canine nickname
Cuspids
Essentially incisors now
cervical line
Junction between the crown and root portion is marked by a distinct line
Incisal function
To cut into
Occlude
To come into contact with
Occlusion
Contact of teeth in opposing dental arches when the jaws are closed during various jaw movements
Palatal surface
Lingual surfaces of the maxillary teeth
Which teeth do not have any teeth distal to them?
The distal surfaces of permanent 3rd molars and primary 2nd molars
The mesial surface of a tooth is normally in contact with the distal surface of the adjacent tooth. When is this not true?
The mandibular and maxillary central incisors
Height of contour
The maximum convexity of each surface
Proximal contact area (contact point)
it is the portion of the proximal surface that touches the adjacent tooth
Proximal height of contour
it is the portion of the proximal surface that touches the adjacent tooth
Also called the contact point
Diastema
The space between the proximal surfaces of adjacent teeth if they don’t touch
Embrasure
An embrasure is a “V” shaped space adjacent to the contact area of two adjacent teeth
Labial/buccal embrasure
Embrasure space widens facially to form this
Lingual embrasure
Embrasure space widens lingually to form this
Incisal/occlusal embrasure
Embrasure space forms occlusally
Gingival/cervical embrasure
triangular space cervical to the contact area
filled by interdental/gingival papilla also known as the interproximal surface
Function of embrasures (1)
Provide a spillway for the escape of food during mastication
Function of embrasures (2)
Prevent food from being forced through the contact
Function of embrasures (3)
Embrasures and contact areas protect the gingiva from undue trauma
Function of embrasures (4)
Make the tooth self cleansing as the rounded smooth surfaces of the crown are exposed to the cleaning action of fibrous foods and friction of cheeks and lips
Function of embrasures (5)
Reduces force imparted on teeth during reduction of food during mastication
Mesiodistal
Possible crown dimension
Cervico-occlusal
Possible crown dimension
buccolingual
Possible crown dimension
Boley gauge use (2) (not that important)
Can be used in waxing to confirm that the wax-up is the same measurement as the contralateral tooth
Division of crown for anterior teeth (3 ways)
1) Inciso-cervically
2) mesiodistally
3) labiolingually
Division of crown for posterior teeth (3 ways)
1) Occluso-cervically
2) Mesiodistally
3) Buccolingually
