Anatomical Landmarks Maxilla

1. ANATOMICAL LANDMARKS :
MAXILLA
PRESENTED BY
DIKSHYA KOIRALA

2. LIMITING STRUCTURES
• Limiting structures of maxillary denture
bearing area are :
• Labial frenum
• Labial vestibule
• Buccal frenum
• Buccal vestibule
• Hamular notch
• Vibrating line
• Posterior palatal seal

3. SUPPORTING STRUCTURES
• Supporting structures of maxillary denture bearing area are:
• Primary- i) Maxillary tuberosity
ii) Hard Palate on either side of palatal raphe
Secondary - i) Residual Alveolar ridges
ii) Rugae
RELIEF AREAS:
Relief areas of maxillary denture bearing area are :
i) Incisive Papilla
ii) Cuspid Eminence
iii) Mid Palatine Raphe
iv) Fovea Palatine

4. Labial Frenum
• It appears as a fold of mucous membrane extending
from mucous lining of lip to the crest of residual ridge on
the labial surface.
• It may be single or multiple with fan shape
• Significance:
• 1.Recording:Lip elevated and extended
outward,downward& inward.
• 2.Sufficient relief should be given to avoid
pain&dislodgement of denture
• If the frenum is attached close to the crest,frenectomy is
advocated.

5. Labial Vestibule
• Boundaries
• Anterior:
• Posterior:
• Lateral:
• Medial:
• Active muscles:Orbicularis oris
• Microscopically;
• Mucosa:thin&non keratinized epithelium
• Submucosa;thick,abundant loose areolar tissue&elastic
fibres
• Significance:
• Recording:
Labial frenum
Buccal frenum
Labial mucosa
Maxillary residual alveolar
ridge

6. Labial Vestibule
• Boundaries
• Anterior:
• Posterior:
• Lateral:
• Medial:
• Active muscles:Orbicularis oris
• Microscopically;
• Mucosa:thin&non keratinized epithelium
• Submucosa;thick,abundant loose areolar tissue&elastic
fibres
• Significance:
• Recording:
Labial frenum
Buccal frenum
Labial mucosa
Maxillary residual alveolar
ridge