Standard Terminology for the Lips, Mouth, and Oral Region

The appearance of the lips varies with facial movement. Smiling and crying can alter dramatically the shape of the upper lip, as do pursing or pouting. Therefore, the lips must be assessed when the subject has a relaxed (neutral) face: the eyes are open, the lips make gentle contact, and the teeth are slightly separated. The neck, jaw, and facial muscles should not be stretched nor contracted, and the face should be positioned using the Frankfurt horizontal (a line joining the orbitale and the porion) [Farkas, [1981]]. A detailed description of the anatomic features of the lips, mouth, and oral region is available for reference.

The definitions are listed alphabetically based on the physical feature, not the modifier.

• LIPS
• Commissural Pit
• Cupid's Bow, Absent
• Cupid's Bow, Accentuated: See Cupid's Bow, Exaggerated
• Cupid's Bow, Exaggerated
• Cupid's Bow: See Cupid's Bow, Exaggerated
• Lip Fistula: See Lip Pit
• Lip Freckle
• Lip Lentigo: See Lip Freckle
• Lip Pit
• Lip, Full: See Vermilion, Upper Lip, Thin
• Lip, Lower Drooping: See Vermilion, Lower Lip, Everted
• Lip, Lower Full: See Vermilion, Lower Lip, Thick
• Lip, Lower Thick: See Vermilion, Lower Lip, Thick
• Lip, Thick: See Vermilion, Upper Lip, Thin
• Lip, Upper Thin: See Vermilion, Upper Lip, Thin
• Mouth, Tented: See Vermilion, Upper Lip, Tented
• Nasolabial Crease, Hypoplastic: See Nasolabial Fold, Underdeveloped
• Nasolabial Crease, Prominent: See Nasolabial Fold, Prominent
• Nasolabial Crease, Underdeveloped: See Nasolabial Fold, Underdeveloped
• Nasolabial Fold, Prominent
• Nasolabial Fold, Underdeveloped
• Perioral Hyperpigmentation
• Vermilion Border, Thin: See Vermilion, Upper Lip, Thin
• Vermilion, Lower Lip, Everted
• Vermilion, Lower Lip, Thick
• Vermilion, Lower Lip, Thin
• Vermilion, Upper Lip, Everted
• Vermilion, Upper Lip, Tented
• Vermilion, Upper Lip, Thick
• Vermilion, Upper Lip, Thin
• MOUTH
• Alveolar Ridge Fusion: See Fibrous Syngnathia
• Fibrous Syngnathia
• Hyperpigmentation, Intra-Oral
• Macrostomia: See Mouth, Wide
• Microstomia: See Mouth, Narrow
• Mouth, Carp: See Mouth, Downturned Corners of
• Mouth, Downturned Corners of
• Mouth, Fish: See Mouth, Downturned Corners of
• Mouth, Narrow
• Mouth, Upturned Corners of
• Mouth, Wide
• Oral Aperture, Small: See Mouth, Narrow
• Oral Frenulum, Accessory
• Oral Frenulum, Extra: See Oral Frenulum, Accessory
• Oral Frenulum, Supernumerary: See Oral Frenulum, Accessory
• Oral Synechia
• Vermilion, Upper Lip, U-Shaped
• ORAL CAVITY
• Aglossia: See Tongue, Small
• Alveolar Ridge Hypertrophy: See Alveolar Ridge Overgrowth
• Alveolar Ridge Overgrowth
• Ankyloglossia
• Anodontia: See Oligodontia
• Central Incisor, Single Maxillary
• Dental Crowding
• Diastemata, Multiple: See Teeth, Widely Spaced
• Diastema
• Double Tooth: See Teeth, Fused
• Eruption, Advanced
• Eruption, Delayed
• Gingival Hyperplasia: See Gingival Overgrowth
• Gingival Hypertrophy: See Gingival Overgrowth
• Gingival Overgrowth
• Glossoptosis
• Hypodontia: See Oligodontia
• Hypoglossia: See Tongue, Small
• Macrodontia
• Macroglossia: See Tongue, Large
• Microdontia
• Microglossia: See Tongue, Small
• Oligodontia
• Open Bite
• Palate, Hard, Short
• Palate, High Arched: See Palate, High
• Palate, High
• Palate, Hypoplastic: See Palate, Hard, Short
• Palate, Narrow
• Palate, Short: See Palate, Hard, Short
• Palate, Submucous Cleft
• Palatine Ridges, Prominent
• Teeth, Fused
• Teeth, Widely Spaced
• Tongue Grooves, Prominent: See Tongue, Furrowed
• Tongue, Bifid
• Tongue, Furrowed
• Tongue, Hyperplasia: See Tongue, Large
• Tongue, Hypertrophy: See Tongue, Large
• Tongue, Hypoplastic: See Tongue, Small
• Tongue, Large
• Tongue, Lobulated
• Tongue, Protruding
• Tongue, Rudimentary: See Tongue, Small
• Tongue, Scrotal: See Tongue, Furrowed
• Tongue, Small
• Tongue, Smooth
• Tooth Agenesis: See Oligodontia
• Tooth, Natal
• Tooth, Premature Loss
• Tooth, Supernumerary
• Uvula, Absent
• Uvula, Bifid: See Uvula, Cleft
• Uvula, Broad
• Uvula, Cleft
• Uvula, Hypoplastic: See Uvula, Short
• Uvula, Long
• Uvula, Narrow
• Uvula, Short