Patent US5158452A successfully refreshed from Google Patents.
US5158452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthodontic appliance mounting base
Assignee: RMO Inc
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Filing: 1991-02-01
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Granted: 1992-10-27
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Expires: 2011-02-01
Abstract
Abstract Rails (38) project from a mesial edge (40) and a distal edge (42) of a base (28) of an orthodontic appliance (30) forming a gap between the base (28) and a surface (32) of a tooth (34). At least one post (44) projects from the base (28) between the rails (38). The rails (38) and post (44) are dimensioned to substantially preclude post/tooth contact and reduce the likelihood of appliance detachment from a curved tooth surface. The posts (44) are formed to resist shear forces associated with mastication and to facilitate the smooth flow of bonding material about the posts (44) when the base (28) is pressed against a tooth surface (32) during bonding.
Inventors
- 👤 Steven A. Franseen
- 👤 Jeffrey A. Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:34
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/12
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
90 words
A base for attaching an orthodontic appliance to a tooth surface, at least a portion of the base having an occlusal-gingival curvature, comprising: a plurality of spaced apart posts projecting from the base towards the tooth surface to define interconnecting channels between peripheries of said posts, wherein each of said posts has a projecting end, said projecting ends collectively defining a mesial-distal arcuate surface; and rails projecting from the base towards the tooth along opposite edges of the base, wherein said rails project further from the base than said posts.
Claim 2
Dependent Claim
90 words
A base for attaching an orthodontic appliance to a tooth surface, at least a portion of the base having an occlusal-gingival curvature, comprising: a plurality of spaced apart posts projecting from the base towards the tooth surface to define interconnecting channels between peripheries of said posts, wherein each of said posts has a projecting end, said projecting ends collectively defining a mesial-distal arcuate surface; and rails projecting from the base towards the tooth along opposite edges of the base, wherein said rails project further from the base than said posts.
Claim 3
Dependent Claim
32 words
The base of claim 1, wherein said space between said posts allows excess bonding material to flow along the base between said posts when the base is pressed against the tooth surface.
Claim 4
Dependent Claim
30 words
The base of claim 1, wherein said posts are substantially diamond shaped, said posts being oriented such that edges thereof form angles of approximately 45° relative to said lateral axis.
Claim 5
Dependent Claim
12 words
The base of claim 1, wherein said posts comprises a rhomboid shape.
Claim 6
Dependent Claim
12 words
The base of claim 1, wherein said posts comprise a polygon shape.
Claim 7
Dependent Claim
12 words
The base of claim 1, wherein said posts comprise arcuate side portions.
Claim 8
Dependent Claim
22 words
The base of claim 1, further comprising: rails projecting from the base towards the tooth surface along opposite edges of the base.
Claim 9
Dependent Claim
18 words
The base of claim 7, wherein said posts define at least one channel which extends between said rails.
Claim 10
Dependent Claim
24 words
The base of wherein said rails further comprise: purchase points to allow insertion of a debonding plier between said rails and the tooth surface.
Claim 11
Dependent Claim
24 words
The base of wherein said rails further comprise: purchase points to allow insertion of a debonding plier between said rails and the tooth surface.
Claim 12
Dependent Claim
28 words
The base of claim 1, wherein the width of each said space between adjacently located said posts is at least equal to a smallest width of said posts.
Claim 13
Dependent Claim
18 words
The base of claim 1, wherein said projecting ends of said posts collectively define a gingival-occlusal arcuate surface.
Claim 14
Dependent Claim
31 words
The base of claim 1, wherein said posts define at least one channel which extends from a first edge portion of the base to a second edge portion of the base.
Claim 15
Dependent Claim
39 words
The base of claim 1, wherein said posts are positioned along a plurality of substantially parallel axes on the base, said posts on at least one of said axes being offset from said posts on an adjacent said axis.
Claim 16
Dependent Claim
26 words
The base of claim 1, wherein a tangent to side portions of said posts intersect both a longitudinal axis and a lateral axis of the base.
Claim 17
Dependent Claim
90 words
A base for attaching an orthodontic appliance to a tooth surface, comprising: rails projecting from the base along opposite edges thereof, said rails forming a gap from the base to the tooth surface between said rails; and at least one post in said gap projecting from the base towards the tooth surface, wherein a tangent to side portions of said post is transverse to both a longitudinal axis and a lateral axis of the base, wherein said rails project further from the base than does said at least one post.
Claim 18
Dependent Claim
90 words
A base for attaching an orthodontic appliance to a tooth surface, comprising: rails projecting from the base along opposite edges thereof, said rails forming a gap from the base to the tooth surface between said rails; and at least one post in said gap projecting from the base towards the tooth surface, wherein a tangent to side portions of said post is transverse to both a longitudinal axis and a lateral axis of the base, wherein said rails project further from the base than does said at least one post.
Claim 19
Dependent Claim
23 words
The appliance base of claim 15, wherein excess bonding material tends to flow occlusal/gingivally when the base is pressed against the tooth surface.
Claim 20
Dependent Claim
30 words
The appliance base of claim 16, wherein said post has at least one side portion inclined relative to an occlusal plane to facilitate flow of bonding material about said post.
Claim 21
Dependent Claim
41 words
The appliance base of claim 15 wherein said rails further comprise: purchase points to allow a debonding plier to fit between said rails and the tooth surface, wherein likelihood of fracturing the base or damaging the tooth during debonding is reduced.
Claim 22
Dependent Claim
18 words
The appliance base of claim 15, wherein said opposite edges comprise metal and distal edges of the base.
Claim 23
Dependent Claim
12 words
The appliance base of claim 19, wherein said rails are gingivally/occlusally arcuate.
Claim 24
Dependent Claim
99 words
An orthodontic appliance, comprising: a base for attaching the appliance to a tooth surface, said base having mesial, distal, occlusal, and gingival edges; a plurality of posts projecting from said base toward said tooth, wherein said posts are substantially diamond shaped with edges of said posts being angularly displaced approximately 45° relative to said occlusal edge of said base; and rails projecting from said base along opposite edges towards said tooth surface to form a border substantially abutting said tooth surface, wherein said rails extend further from said base than said posts to reduce the likelihood of surface/post contact.
Claim 25
Dependent Claim
99 words
An orthodontic appliance, comprising: a base for attaching the appliance to a tooth surface, said base having mesial, distal, occlusal, and gingival edges; a plurality of posts projecting from said base toward said tooth, wherein said posts are substantially diamond shaped with edges of said posts being angularly displaced approximately 45° relative to said occlusal edge of said base; and rails projecting from said base along opposite edges towards said tooth surface to form a border substantially abutting said tooth surface, wherein said rails extend further from said base than said posts to reduce the likelihood of surface/post contact.
Claim 26
Dependent Claim
24 words
The appliance of claim 21, wherein said rails are arcuate along an occlusal-gingival axis to approximately match an occlusal-gingival curvature of said tooth surface.
Claim 27
Dependent Claim
24 words
The appliance of claim 21, wherein said posts are arcuate along a mesio-distal axis to approximately match a mesio-distal curvature of said tooth surface.
Claim 28
Dependent Claim
18 words
The appliance of claim 21, wherein said posts project from said base a distance of approximately 0.08 inches.
Claim 29
Dependent Claim
18 words
The appliance of claim 21, wherein said rails project from said base a distance of approximately 0.012 inches.
Claim 30
Dependent Claim
10 words
The appliance of claim 21, wherein said appliance comprises: ceramic.
Claim 31
Dependent Claim
18 words
The appliance of claim 21, wherein said opposite edges comprise said mesial and distal edges of the base.
Claim 32
Dependent Claim
12 words
The appliance base of claim 27, wherein said rails are gingivally/occlusally arcuate.
Claim 33
Independent Claim
90 words
A method for reducing the likelihood of orthodontic appliance base detachment from a surface of a tooth due to forces on the appliance, comprising the steps of: positioning rails which extend toward the tooth from opposite edges of the base directly on the surface of the tooth; and bonding a portion of the base intermediate said rails to the surface of the tooth with a bonding material which forms an interface therebetween, said intermediate portion comprising one or more posts extending toward the tooth a distance less than said rails.
Claim 34
Independent Claim
90 words
A method for reducing the likelihood of orthodontic appliance base detachment from a surface of a tooth due to forces on the appliance, comprising the steps of: positioning rails which extend toward the tooth from opposite edges of the base directly on the surface of the tooth; and bonding a portion of the base intermediate said rails to the surface of the tooth with a bonding material which forms an interface therebetween, said intermediate portion comprising one or more posts extending toward the tooth a distance less than said rails.
Claim 35
Dependent Claim
52 words
The method of claim 29, further comprising the steps of: forcing air from between said bonding material and the base, when the base is applied to the surface of the tooth, through channels formed between said posts, wherein the likelihood of air remaining between said bonding material and the base is reduced.
Claim 36
Dependent Claim
64 words
A base for attaching at orthodontic appliance to a tooth surface, comprising: a plurality of spaced apart posts projecting from the base towards the tooth surface to define interconnecting channels between peripheries of said posts; and rails projecting from the base towards the tooth surface along mesial and distal edges of the base, wherein said rails project further form the base than said posts.
Claim 37
Dependent Claim
64 words
A base for attaching at orthodontic appliance to a tooth surface, comprising: a plurality of spaced apart posts projecting from the base towards the tooth surface to define interconnecting channels between peripheries of said posts; and rails projecting from the base towards the tooth surface along mesial and distal edges of the base, wherein said rails project further form the base than said posts.
Claim 38
Dependent Claim
26 words
The base of claim 31, wherein said rails further comprise: purchase points to allow insertion of a debonding plier between said rails and the tooth surface.
Claim 39
Dependent Claim
25 words
The base of claim 31, wherein a tangent to side portions of said posts intersect both a longitudinal and a lateral axis of the base.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-10-27 | 1996-04-27 | 1996-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-27 | 2000-04-27 | 2000-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-27 | 2004-04-27 | 2004-10-27 | $7700.00 | Window Closed / Lapsed |