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190096045 oral anatomy notes

190096045 oral anatomy notes

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ORAL ANATOMY

ORAL CAVITY

Divisions:

a. Oral Vestibule – bounded by cheeks and alveolar process.

b. Oral Cavity Proper – inside; where you can find the tongue.

ORAL VESTIBULE

* Vestibularis Oris / Fornix Vestibuli – shadow

• Buccal – cheeks → Buccal Vestibule ➔ Mucobuccal Fold

• Labial – lips → Labial Vestibule ➔ Mucolabial Fold

▪ Mucous Membrane --- covers bone; soft tissues that covers the alveolar processes.

-> Alveolar Mucosa – beneath fornix vestibule.

- Alveolar Bone / Alveolar Processes

-> Gingiva (gums) – adjacent to freeborder.

*Mucogingival Junction – separates alveolar mucosa and gingiva.

MAXILLARY MUCOUS MEMBRANE

▪ RETROALVEOLAR NOTCH / Hamular Notch – at the back of the alveolar tubercle

▪ RETROMOLAR – piece of tissue; at the last molar or 3

molar.

▪ MAXILLARY TUBEROSITY / ALVEOLAR TUBERCLE – depression in the area of the molars; end of the 3

molar.

Retromolar

Maxillary Tuberosity

Retroalveolar notch

Notch – depression

Retro – behind / back

MANDIBULAR MUCOUS MEMBRANE

▪ RETROMOLAR PAD – supports denture; stress absorber

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▪ RETROMOLAR PAPILLA – piece of tissue

▪ FREANAE / SAGITTAL FOLDS:

o Labial – labial frenae

o Buccal – buccal frenae

▪ Lingual frenum – holds tongue

ORAL CAVITY PROPER

ROOF

o HARD PALATE – palatine processes of maxilla and horizontal plates of palatine bones.

➔ Fuse at the center.

▪ INCISIVE PAPILLA

• Most stable landmark in the oral cavity.

• Back in between two maxillary central incisors.

• Reference point for the midline

• Covers the incisive foramen where the anesthesia is injected

▪ MEDIAN PALATINE RAPHE

• Union in between the left and right palate

▪ PALATINE RUGAE / TRANSVERSE PALATINE FOLDS

• Fold of mucosa from the midline

• For speech and production of sounds

• Mastication and absorption

o SOFT PALATE – made up of muscular tissue that is covered by epithelial tissue.

▪ PALATINE FOVEA or PALATINE FOVEOLA OF STIEDA

• Ducts for passageway; for secretion.

• Coming together of ducts

▪ HAMULUS OF PTERYGOID PROCESS – bulge of hamulus; junction of hard and soft palates.

*BONE RESORPTION – constant use will destroy the bone.

POSTERIOR WALL

o PTERYGOMANDIBULAR RAPHE

▪ It connects the mandible to the maxilla.

o PALATINE UVULA / UVULA

▪ A bell-shaped hanging from the center of the posterior border of the soft palate.

o PALATOGLOSSAL FOLD

▪ Arch from the tongue of the palate.

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ORAL ANATOMY ORAL CAVITY Divisions: a. Oral Vestibule – bounded by cheeks and alveolar process. b. Oral Cavity Proper – inside; where you can find the tongue. ORAL VESTIBULE * Vestibularis Oris / Fornix Vestibuli – shadow • Buccal – cheeks → Buccal Vestibule ➔ Mucobuccal Fold • Labial – lips → Labial Vestibule ➔ Mucolabial Fold ▪ Mucous Membrane --- covers bone; soft tissues that covers the alveolar processes. -> Alveolar Mucosa – beneath fornix vestibule. - Alveolar Bone / Alveolar Processes -> Gingiva (gums) – adjacent to freeborder. *Mucogingival Junction – separates alveolar mucosa and gingiva. MAXILLARY MUCOUS MEMBRANE ▪ RETROALVEOLAR NOTCH / Hamular Notch – at the back of the alveolar tubercle ▪ RETROMOLAR – piece of tissue; at the last molar or 3rd molar. ▪ MAXILLARY TUBEROSITY / ALVEOLAR TUBERCLE – depression in the area of the molars; end of the 3rd molar. Retromolar Maxillary Tuberosity Retroalveolar notch Notch – depression Retro – behind / back MANDIBULAR MUCOUS MEMBRANE ▪ RETROMOLAR PAD – supports denture; stress absorber ▪ RETROMOLAR PAPILLA – piece of tissue ▪ FREANAE / SAGITTAL FOLDS: o Labial – labial frenae o Buccal – buccal frenae ▪ Lingual frenum – holds tongue ORAL CAVITY PROPER ROOF o HARD PALATE – palatine processes of maxilla and horizontal plates of palatine bones. ➔ Fuse at the center. ▪ ▪ INCISIVE PAPILLA • Most stable landmark in the oral cavity. ...
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