# US 10,765,358 B2 · Dental instrument for measuring a degree of tapering of a side wall of a tooth > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,765,358 B2 - Document ID: US10765358B2 - Status: Granted - Kind: B2 - Application number: 16/152,690 - Filed: 2018-10-05 - Published: 2019-04-11 - Granted: 2020-09-08 - Earliest claimed: 2017-10-11 - Assignees: University of Florida Research Foundation, Inc. - Applicants: University of Florida Research Foundation, Inc. - Inventors: Hind Sattar Hussein - Web page: https://patentgrep.com/patent/US10765358B2 ## CPC - A61B 5/4547: {Evaluating teeth} - A61B 5/1071: {measuring angles, e.g. using goniometers (A61B5/1123 takes precedence)} - A61C 19/04: Measuring instruments specially adapted for dentistry ({A61C5/44 takes precedence; testing vitality of teeth A61B5/0534;} radiation diagnosis specially adapted for dentistry A61B6/51) - G09B 19/24: Use of tools - G09B 23/283: {for dentistry or oral hygiene (G09B23/286 takes precedence)} - A61C 2201/002: using colour effect, e.g. for identification purposes - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00) - G09B: EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS (devices for psychotechnics or for testing reaction times A61B5/16; games, sports, amusements A63; projectors, projector screens G03B) ## Abstract A dental instrument configured to measure a degree of tapering of a side wall of a tooth is described. The dental instrument may include a handle and a taper measuring component coupled to a distal end of the handle. The taper measuring component includes a first, second, and third elongated member. A bottom surface may be formed at a coupling point of the second and third elongated member, where the second elongated member is configured to be substantially vertical when the bottom surface is placed adjacent to a tooth, and the third elongated member projecting radially from the second elongated member at a predefined angle. The third elongated member is shaped and positioned to rest substantially flush along the at least one side wall of the tooth when a degree of tapering of the tooth is substantially similar to the angle, and may include a measuring component. ## Claims ### Claim 1 A dental instrument for measuring a degree of tapering of a tooth, comprising: a handle; and a taper measuring component coupled to a distal end of the handle, the taper measuring component comprising: a first bend defining a first elongated member and a second elongated member, wherein the first elongated member extends from and is parallel to a body of the handle; a second bend defining the second elongated member and a third elongated member; a bottom surface defined by the second bend; wherein the second elongated member is configured to be substantially vertical when the bottom surface of the taper measuring component is placed adjacent to the tooth such that the second elongated member is substantially parallel to a vertical axis of a tooth; and wherein the third elongated member projects radially from the second elongated member at a predefined angle, the third elongated member being shaped and positioned to rest substantially flush along a side wall of the tooth in response to a degree of tapering of the tooth being substantially similar to the predefined angle. ### Claim 2 (depends on 1) The dental instrument of claim 1, wherein the taper measuring component is detachably attached to the handle. ### Claim 3 (depends on 1) The dental instrument of claim 1, wherein the predefined angle is one of: six degrees, eight degrees, twelve degrees, sixteen degrees, or seventeen degrees. ### Claim 4 (depends on 1) The dental instrument of claim 1, wherein the handle comprises an indicator indicative of the predefined angle at which the third elongated member projects radially from the second elongated member. ### Claim 5 A dental instrument configured to be held by an operator to measure a degree of tapering of a tooth, wherein the dental instrument comprises: a handle; and a taper measuring component coupled to a distal end of the handle adapted to measure the degree of tapering of a side wall of the tooth, the taper measuring component comprising: a first elongated member extending from the handle; a second elongated member; a third elongated member; and a bottom surface formed at a coupling point of the second elongated member and the third elongated member, wherein: the second elongated member is configured to be substantially parallel to a vertical axis of the tooth when the bottom surface of the taper measuring component is placed adjacent to the tooth; and the third elongated member projects radially from the second elongated member at a predefined angle, the third elongated member being shaped and positioned to rest substantially flush along a surface of the side wall of the tooth in response to a degree of tapering of the tooth being substantially similar to the predefined angle. ### Claim 6 (depends on 5) The dental instrument of claim 5, wherein the second elongated members has a length between 12 mm and 15 mm and the third elongated member has a length between 12 mm and 15 mm. ### Claim 7 (depends on 5) The dental instrument of claim 5, wherein the predefined angle is one of: six degrees, eight degrees, twelve degrees, sixteen degrees, or seventeen degrees. ### Claim 8 (depends on 5) The dental instrument of claim 5, wherein the tooth is a model tooth or a mammalian tooth. ### Claim 9 (depends on 5) The dental instrument of claim 5, wherein the handle comprises an indicator indicative of the predefined angle. ### Claim 10 (depends on 9) The dental instrument of claim 9, wherein the indicator is color coded. ### Claim 11 (depends on 5) The dental instrument of claim 5, wherein at least one side of the third elongated member comprises a measuring component that provides a height of the tooth wall. ### Claim 12 A method for measuring a degree of tapering of a tooth, comprising: providing a dental instrument adapted to measure the degree of tapering of a side wall of the tooth, the dental instrument comprising: a handle; and a taper measuring component comprising: a first elongated member; a bottom surface formed at a coupling point of a second elongated member and a third elongated member; the second elongated member being configured to be substantially vertical when the bottom surface of the taper measuring component is placed adjacent to the tooth; and the third elongated member projecting radially from the first elongated member at a predefined angle; positioning the taper measuring component on a finishing line of a tooth preparation; and measuring the degree of tapering of the side wall of the tooth based at least in part on whether the third elongated member rests substantially flush along the side wall of the tooth. ### Claim 13 (depends on 12) The method of claim 12, further comprising detaching or attaching the taper measuring component to the handle. ### Claim 14 (depends on 12) The method of claim 12, wherein the predefined angle is one of: six degrees, eight degrees, twelve degrees, sixteen degrees, or seventeen degrees. ### Claim 15 (depends on 12) The method of claim 12, wherein the handle comprises an indicator indicative of the predefined angle at which the third elongated member projects radially from the second elongated member. ### Claim 16 (depends on 12) The method of claim 12, wherein the second elongated members has a length between 12 mm and 15 mm and the third elongated member has a length between 12 mm and 15 mm. ### Claim 17 (depends on 12) The method of claim 12, wherein the tooth is a model tooth or a mammalian tooth.