The chin region of the Australian aboriginal mandible

✍ Scribed by Thomas Murphy

• Publisher: John Wiley and Sons
• Year: 1957
• Tongue: English
• Weight: 794 KB
• Volume: 15
• Category: Article
• ISSN: 0002-9483
• DOI: 10.1002/ajpa.1330150404

✦ Synopsis

As the part of the mandible which forms the chin is a distinctively human characteristic, this region is of exceptional anthropological interest. The literature deals with the labial aspect, the mental foramen, the mental angle and the genial tubercles and foramina in various ethnic groups.

The purpose of this study is to make a record, at present lacking, of these conditions in the Australian aboriginal mandible.

MATERIAL AND METHODS

Mandibles suitable for examination and measurement in the collections housed in the Department of Anatomy, University of Adelaide, and in the South Australian Museum numbered 625. For some observations all were inspected, for others a lesser number sufficed.

Age classification

As the mandible is a tooth-bearing bone convenient criteria 1. Symphysis menti fused but prior to the eruption of the 2. Second deciduous molar in place but prior to the erup-exist for classification in the following groups.

second deciduous molar to its functional position. tion of the first permanent molar to its functional position.