Esthetic orthondontic wire
US5759029A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 26, 1996 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Sep 26, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C7/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An esthetic orthodontic wire comprising a composite material which includes a biocompatible inorganic fiber and a thermoplastic resin. The inorganic fiber is glass fiber formed linearly continuous and having a generally circular or oval cross-sectional shape. The inorganic fiber has a diameter ranging from 1 to 100 .mu.m. The biocompatible inorganic fiber is produced from a mixture of calcium oxide, diphosphorus pentoxide, silicon dioxide and aluminium oxide. The inorganic fiber is biocompatible, in which a molar ratio of calcium/phosphorus is within a range of from 0.5 to 3.0, wherein total of calcium oxide and diphosphorus pentoxide is within a range of from 20 to 65% by weight relative to the glass fiber, and total of silicon dioxide and aluminium oxide is within a range of from 35 to 80% by weight relative to the glass fiber. The content of the glass fiber is within a range of from 5 to 70% by volume of the orthodontic wire. The thermoplastic resin is one selected from the group consisting methylmethacrylate resin and a copolymer of methylmethacrylate and one of methacrylate and acrylate. Additionally, the orthodontic wire is generally white and translucent. The orthodontic wir…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.