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ORAL ANATOMY IN RELATION TO COMPLETE DENTURE CONSTRUCTION.

Maxillary edentulous patient

ANATOMICAL LANDMARKS

Divided into

LABIAL FRENUM

Labial vestibule

Buccal frenum

Buccal vestibule

Hamular notch

Posterior Palatal seal area.

Palatine fovea region-

These are clinically visible pits near the midline of the palate. They are the ductal openings and receivers of distributaries of ducts of the surrounding clusters of mucous glands.

vibrating line

Anatomical landmarks of supporting structures in maxillary region
Hard palate

Palatine rugae

Torus palatinus

Residual alveolar ridge

Maxillary tuberosity.

INCISIVE PAPILLA

ANATOMICAL LANDMARKS OF RELIEF STRUCTURES IN MAXILLARY REGION

Mid palatine raphe

LABIAL FRENUM
Frenum contains fiber of Orbicularis oris and Mentalis muscle Therefore the frenum is quite sensitive and active, and the denture must be fitted carefully around it to maintain a seal without causing soreness

LABIAL VESTIBULE

Muscle attachment close to the crest of the ridge –limits the denture flange extension

BUCCAL FRENUM

Buccal vestibule

RETROMOLAR PAD

The retromolar papilla is a pear shaped area just anterior to the retromolar pad, it is dense, fibrous connective tissue

ALVEOLINGUAL SULCUS

This can be divide into:-The anterior region extends from the lingual f. back to where mylohyoid muscle curves above the level of the sulcus (premylohyoid fossa) .


The middle region extends from premylohyoid fossa to the distal end of the mylohyoid ridge, curving medially from the body of the mandible. This curvature is caused by the prominance of mylohyoid ridge & the action of mylohyoid muscle.
The posterior region: here the flange passes into the retromylohyoid fossa & completes the typical S form of the correctly shaped lingual flange.

LINGUAL FRENUM

THE BUCCAL SHELF AREA
ANATOMICAL LANDMARKS OF SUPPORTING STRUCTURES IN MANDIBULAR REGION
Boundaries-
Medially- crest of RAR Anteriorly- buccal frenum laterally- external oblique ridge Distally- retromolar pad



Considered as a primary stress-bearing area because it is covered by a layer of cortical bone, & it lies at right angles to vertical occlusal forces

RESIDUAL ALVEOLAR RIDGE

MENTAL FORAMEN
Genial Tubercles
Anatomical landmarks of Relief areas in mandibular region.

MYLOHYOID RIDGE

Torus Mandibularis

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