𝔖 Bobbio Scriptorium
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Rocking and twisting moments in extraction of teeth in the upper jaw

✍ Scribed by Lehtinen, Risto; Ojala, Tarmo


Book ID
122885345
Publisher
Elsevier
Year
1980
Weight
364 KB
Volume
9
Category
Article
ISSN
0300-9785

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Evolution of the upper jaw mechanism in
✍ JR Theodore H. Eaton πŸ“‚ Article πŸ“… 1935 πŸ› John Wiley and Sons 🌐 English βš– 865 KB

## Abstract This study reveals the existence of four distinct but genetically related types of upper jaw mechanisms: 1. The non‐protractile, with no mechanism for the protrusion of the pre‐maxillae. The maxillaries form part of the upper margin of the mouth, as in Isospondyli, Apodes and Haplomi.