RA - Mouth notes

Maxilla

Mandible

- there exists a "horseshoe curve" of the
jaws and teeth

- the mouth is most ___________ (projecting/concave) at the midline

- the lateral aspects are ___________ (anterior/posterior)

- it is important to duplicate the curves _____________ (horizontally/vertically)

Variation of both halves

- one side is usually _________ (shorter/longer)

- one mucous membrane is usually ________ (thicker/thinner)

- the "side" varies with the individual

Expression

- the mouth is the most important feature when considering facial expressions

- it is the only feature which changes expression

Parts of the mouth: upper white lip

aka: upper ____________ lip

the area between the _______ (chin/nose) and the red lips

Parts of the mouth: upper white lip boundaries/borders

superior border: it is the ____ (base/apex) of the nose or the columna nasi

lateral border: naso labial fold; it is the only feature which changes expression

inferior border: it is the __________ (superior/inferior) border of the upper red lip

Parts of the mouth: upper white lip: number of surface planes

- there are __ (1,2, 3) surface planes

- the medial surface plane is the most __________ (concave/projecting)

- the lateral suface planes are the most __________ (depressed/convexed)

Parts of the mouth: red lips

aka mucous membrane (upper and lower)

the visible __________ (reddish/whiteish) poriton

Parts of the mouth: red lips boundaries/borders

- superior border of the upper red lip is: the ___________ (superior/inferior) border of the upper white lip)

- no inferior border for: the ______ (upper/lower) red lip

- no superior border for: the lower red lip

- inferior border of lower red lip is: the __________ (superior/inferior) border of the lower white lip

- lateral border of both red lips is: the end of the line of closure

Parts of the mouth: lower white lip

aka: lower ___________ lip

the area between the red lips and the ____ (chin/nose)

Parts of the mouth: lower white lip boundaries/borders

- superior border: it is the _______ (superior/inferior) border of the lower red lip

- lateral border: none

- inferior border: it is the labio-mental sulcus (inferior labial groove)

Parts of the mouth: lower white lip: number of surface planes

- there are __ (1,2,3) surface planes

- the medial surface plane is the most __________ (concave/projecting)

- the lateral surface planes are the most ____________ (depressed/convexed)

Line of closure

- aka: line of the lips

- where the __ (2,3) mucous membranes come together

- it is ____________ (horizontal/vertical) with gentle curves

- its ends may turn up or down or with combinations

Weather line

- a _____________ (horizontal/vertical) line on both red lips that is due to the effects of weather

- in front of the weather line the red lips appear ___ (dry/wet) and may crack

- behind the weather line the red lips appear ___ (dry/moist)

- NOTE: the line of closure mouth is not synonymous for weather line. However if you close the mouth properly they will be in the same place. Line of closure mouth is synonymous with line of the lips and not synonymous with lines of the lips.

Lines of the lip

- these are the little _________ (horizontal/vertical) lines or cracks on the red lips

Labial sulci

aka: knitting lines of sulci lips

these are the _________ (horizontal/vertical) lines or furrows on the white lips

they often knit into the mucous membrane

Anguli oris eminence

Anguli oris sulcus

Nasal sulcus

Nasal-labial sulcus

Nasal-labial fold

Philtrum

Labio-mental sulcus