EUREKA SPRING: The Eureka Spring is a three part telescopic appliance fixed to the upper arch at the level of the molar band and to the lower arch distal to the cuspid. The main component of the Eureka spring is an open wound coil spring encased in plunger assembly.
This occurred in such a way that a group of Mestizos in the city of Cali was characterized in a simplification of the dental morphology as having a low frequency of the cusp of Carabelli (this trait was expressed ambiguously in their fossa forms - characteristic of sinodonts - and cuspids of medium size - a characteristic of Caucasoids), a reduced hypocone (a property of Western Caucasoid groups) and the high frequency of the point P of the protostylid (an exclusive feature of Amerindian populations) (4).
Explain that the front teeth (called incisors) are good for biting into food, the pointy teeth (cuspids) are good for tearing tougher foods, and the back teeth (molars) are good for chewing.
Poppe and Goto (1992) proposed that the genera Adelomelon and Odontocymbiola are synonyms, although Adelomelon has radular teeth cuspids in the same plane and very short racemose salivary ducts, whereas Odontocymbiola has strongly curved, "fang-like" teeth, and very long racemose salivary ducts, as described by Clench and Turner (1964).
When these upper six teeth are in Pont's Index, put distal extensions on the body wire both upper and lower if necessary--at the same time upper and lower cuspids can be put into position.