Artificial teeth for anterior teeth portions
US4909738A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1989 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Jul 25, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K6/838
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An artificial tooth for anterior teeth portions including a concave hollow extending from a basal segment to a lingual incisal segment and located in a substantially central segment, wherein: a percentage of the major diameter of the hollow to the full length is in a range of 10% to 100%, a maximum depth of the hollow is in a range of 0.5 mm to 5.0 mm and a minimum thickness of a cervical segment is in a range of 0.1 mm to 5.0 mm, and a width and length of the cervical segment being defined in terms of a percentage of the cervical minimum mesiodistal length to the maximum mediodistal length being in a range of 50% to 100% and a percentage of the cervical major diameter to the full major diameter being in a range of 10% to 50%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.