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US 6,305,932 B1Granted
Orthodontic element and manufacturing method
AssigneeTomy Company, Ltd.
InventorMikio Mottate
Life of this patent
Estimating the term…
Abstract
In orthodontic element made of a bracket composed of polycrystalline ceramics, a glass liner is furnished in an archwire slot furnished in the bracket.
Claims13
An orthodontic element comprising:
- a bracket comprising polycrystalline ceramics, in which an archwire engages;
- and
- a glass liner provided in an archwire slot formed in said bracket in order to engage the archwire.
A method for producing an orthodontic element, comprising the steps of:
- inserting glass in a slot of a bracket, comprising polycrystalline ceramics, whose slot is somewhat larger than the archwire slot required;
- melting said glass so that said glass covers the slot internal walls;
- and
- forming said glass covering said slot internal walls into a glass liner by processing to a shape nearly along said slot internal walls.
1 more element
Dependencies are inferred from the claim text.