US5318441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cephalometric evaluation of dental radiographs
Assignee: Individual
•
Filing: 1992-09-17
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Granted: 1994-06-07
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Expires: 2012-09-17
Abstract
Abstract A method for cephalometric evaluation includes steps of generating radiographic, X-ray or other image of a patient's individual orthodontic structure, positioning this image in alignment with a graphical depiction of a norm value orthodontic structure, and comparing the individual's structure to the norm value structure to analyze development and to determine a course of orthodontic or other treatment.
Inventors
- 👤 Duane C. Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:07
CPC Classifications
A; A61; A61C; A61C7/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
95 words
Method of evaluating the relationship of individual orthodontic structures for a patient using a graphical depiction of a norm value orthodontic structure for said patient, said method comprising the steps of: a. generating a radiographic image of said individual orthodontic structures for said patient; b. positioning said individual orthodontic structure radiographic image in alignment with said graphical depiction of said norm value orthodontic structures for said patient; and c. graphically comparing said individual orthodontic structure radiographic image with said graphical depiction of said norm value orthodontic structure to evaluate development of said individual orthodontic structures.
Claim 2
Dependent Claim
95 words
Method of evaluating the relationship of individual orthodontic structures for a patient using a graphical depiction of a norm value orthodontic structure for said patient, said method comprising the steps of: a. generating a radiographic image of said individual orthodontic structures for said patient; b. positioning said individual orthodontic structure radiographic image in alignment with said graphical depiction of said norm value orthodontic structures for said patient; and c. graphically comparing said individual orthodontic structure radiographic image with said graphical depiction of said norm value orthodontic structure to evaluate development of said individual orthodontic structures.
Claim 3
Dependent Claim
22 words
A method of claim 1 further comprising selecting said norm value orthodontic structure by determining a cranial base reference for said patient.
Claim 4
Dependent Claim
31 words
The method of claim 2 wherein said step of selecting said norm value orthodontic structure comprises the nasion, the base of the skull, and pterygomaxillary fissure, or other selected reference points.
Claim 5
Dependent Claim
28 words
The method of claim 1 wherein said step of generating said image of said individual orthodontic structure comprises taking a radiographic image of the midface and upper teeth.
Claim 6
Dependent Claim
36 words
The method of claim 1 wherein said step of generating said image of said individual orthodontic structure comprises taking a radiographic image of the midface and upper teeth together with the sinuses, teeth, and related structures.
Claim 7
Dependent Claim
29 words
The method of claim 1 wherein said step of generating said image of said individual orthodontic structure comprises taking a radiographic image of the lower jaw and lower teeth.
Claim 8
Independent Claim
46 words
The method of claims 4, 5, or 6 wherein said step of generating said image of said individual orthodontic structure further comprises taking a radiographic image of the surrounding soft tissue structure of the patient including the nose, lips, chin or other related soft tissue structure.
Claim 9
Dependent Claim
64 words
The method of claim 1 further comprising repeating the steps of claim 1 periodically throughout a course of treatment for the patient, monitoring the growth and development of said individual orthodontic structures of said patient over time, and graphically comparing the actual growth of said individual orthodontic structures to said image of said norm value orthodontic structure with said image serving as a reference.
References Cited (Backward Citations)
US4528627A
Cited
US4610629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-06-06 | 1997-12-06 | 1998-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-06 | 2001-12-06 | 2002-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-06 | 2005-12-06 | 2006-06-07 | $7700.00 | Window Closed / Lapsed |