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[Arterial distribution and morphogenesis of human maxilla]
1School of Stomatology, Beijing Medical University.
Summary
Human maxilla development may follow two distinct arterial patterns. Some individuals have both anterior and posterior superior alveolar arteries, while others only have the posterior, supplying all teeth.
Area of Science:
- Anatomy
- Morphogenesis
- Vascular Biology
Background:
- Maxillofacial morphogenesis in humans is debated, with Fusion and Overlapping Hypotheses.
- Understanding maxillary arterial supply is crucial for comprehending its development.
Purpose of the Study:
- To investigate the arterial supply of the human maxilla.
- To correlate arterial patterns with potential maxillofacial morphogenetic pathways.
Main Methods:
- Analysis of infraorbital and posterior superior alveolar arteries in 9 human cadavers (2 days to 35 years).
- Vascular perfusion using lead tetroxide (Pb3O4) and turpentine.
Main Results:
- Four out of nine individuals exhibited both anterior and posterior superior alveolar arteries.
- Five out of nine individuals possessed only the posterior superior alveolar artery, which supplied incisors and molars.
Conclusions:
- The findings suggest two distinct patterns of maxillary arterial supply exist.
- These patterns may reflect simultaneous, co-existing morphogenetic pathways in human maxilla development.