Teeth sharpening Teeth were sharpened as a rite of passage for adolescents. Deformation of the skull is the best-documented form, largely because archaeological skeletal remains clearly show its presence.
At a certain point, some gaugers replace the open rings with ornamental discs or other decorative insert. Neck stretching Children are often given their first set of coils at an early age of 5.
Dental modifications have often taken the form of removal, usually of one or more incisors ancient Peru, most Australian Aborigines, some groups in Africa, Melanesia, and elsewhere ; sharpening to a point or other pattern by chipping Africa or filing ancient Mexico and Central America ; filing of the surface, sometimes into relief designs Indonesia ; incrustation with precious stones or metal Southeast Asia, India, ancient Mexico, and Ecuador ; insertion of a peg between the teeth India ; and blackening South India, hill peoples in Myanmar [Burma], some Malaysian groups.
In general, voluntary changes are considered to be modifications, and involuntary changes are considered mutilations. Source: BME Much like lip plates, ear gauging is all about stretching the body far beyond what would seem like reasonable parameters.
It appears that wearing these rings elongates the neck — but that is just an illusion.