Dental post and wrench therefor and method of restoring bulk to a tooth root therewith
Patent 4490116 Issued on December 25, 1984. Estimated Expiration Date: 
July 18, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 18, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1524409 2705837 InventorsApplicationNo. 06/632042 filed on 07/18/1984US Classes:433/215, METHOD OR MATERIAL FOR TESTING, TREATING, RESTORING, OR REMOVING NATURAL TEETH433/221, Having surface grooves or ridges433/225Anchor pinExaminersPrimary: Peshock, RobertAttorney, Agent or FirmInternational ClassesA61C 13/225 (20060101)A61C 13/30 (20060101) AbstractAn improved unitary bulk restoring dental post having a stem of substantially parallel threaded sides divided along its length into separate legs for threaded insertion into a tooth root canal by a wrench that applies a predetermined torque to the dental post to thread it into the tooth root for crown restoration. | |
