Title of Invention

METHOD AND ARRANGEMENT FOR ORIENTING A BRIDGE IN POSITION RELATIVE TO A DENTAL IMPLANT

Abstract An arrangement for anchoring a bridge (3) in a position relative to a dental implant (1) comprising a-spacer member (2), which on the one hand cooperates with the implant and on the other hand permits anchoring through cooperation with a fastening members arranged in the bridge, wherein the spacer members of the implant comprise a first and a second sleeve-shaped parts, where the first sleeve-shaped part (9) cooperates with the implant and the second sleeve- shaped part (10) can be joined to and separated from the first sleeve-shaped part and has a portion (10e) which can cooperate with the fastening member in question, and wherein the second sleeve-shaped part (10) has a first part in the form of a lower sleeve-shaped portion (10a), which can be engaged over an upper portion of the first sleeve-shaped part (9), and a second part which supports the portion (10e) which can cooperate with the fastening member, the arrangement further comprising a screw (12) for anchoring the first sleeve- shaped part to the implant, characterized in that the first sleeve-shaped part (9) has grooves (9a), wherein the first part of the second sleeve-shaped part encloses the grooves (9a), and the second part of the second sleeve-shaped part (10) is narrower than the first part of the second sleeve-shaped part.
Full Text Method and arrangement for orienting a bridge in
position relative to a dental implant.
The present invention relates, inter alia, to a method
for orienting a bridge in position relative to a dental
implant with the aid of a spacer member which is
brought into cooperation with, on the one hand, the
respective implant and, on the other hand, with
fastening members arranged in the bridge. The invention
also relates to an arrangement for orienting, a bridge
in position relative to a dental implant and comprising
a spacer member which on the one hand cooperates with
the respective implant and on the other hand permits
position orientation, through cooperation with fastening
members arranged in the bridge.
The present invention is a further development of
patent application WO 03/061512 filed by the same
Applicant and with the same inventor as the present
patent application. Concerning the structure of the
bridge and the problems of connecting such a bridge,'
reference is made inter alia to' said patent
application.
In accordance with the content of the proposed patent
application, it may be necessary to use different
lengths of spacer sleeves in different installation
situations. Quite generally, there is a requirement to
be able to reduce the number of components in dental
work. With different numbers of components for
different installation situations, there are also risks
of the components being mixed up, which entails a risk
of a substandard installation result and means that
certain operations on the bridge or tooth have to be
repeated. There is also a requirement for greater
variations as regards the configurations of the dental
bridge. In some cases, there is a need for all or part
of the bridge to be made relatively narrow. There is

also a requirement for the mutual parallelism between
the implants to be present also in the actual bridge
construction. There is also a requirement for the
installation work to be able to be continued without
the biological incorporation between jaw bone/soft
tissue (gum) and the actual parts of the implant and
the spacer sleeve having to be interrupted when this
has progressed some way Such interruptions of the
incorporation can cause damage which leads to bone
absorption, which in turn leads to poorer esthetic
results.
The object of the present invention is to solve the
abovementioned problems, inter alia.
That which can principally be regarded as
characterizing a method according to the invention is
inter alia, that a first sleeve-shaped part included in.
the spacer member for the respective implant is brought
into cooperation with the implant, and a second sleeve-
shaped part included in the spacer member for the
respective implant is brought into cooperation with, on
the one hand, the first sleeve-shaped part and, on the
other hand, with a fastening member in the bridge.
Further characteristics are that the first and second
sleeve-shaped parts are made to. assume assembled
positions when the bridge is anchored to the implants,
and, upon detachment of the bridge from the implant,
the first and second sleeve-shaped parts are separated
so that the first sleeve-shaped part maintains its
position on the respective implant, and. the second
sleeve-shaped part follows along with the bridge or
constitutes a free part.
That which can principally be regarded as
characterizing an arrangement according to the
invention is that the spacer member for the respective
implant comprises first and second sleeve-shaped parts,
where the first sleeve-shaped part cooperates with the

implant and the second sleeve-shaped part can be joined
to and separated from the first sleeve-shaped part and.
has a portion which can cooperate with the fastening
member in the bridge. Further characteristics are that
the first sleeve-shaped part can have a longitudinal
extent which is related to the installation situation
and is preferably shortened in relation to the second
sleeve-shaped part.
In further developments of the inventive concept, the
first sleeve-shaped part can have a length (or height)
which substantially corresponds to a thickness of the
soft tissue or gum on the jaw, in which the respective
implant is to be applied. In a preferred embodiment,
the first sleeve-shaped part can be arranged in
relation to and can cooperate with fibers of the
gingiva and, if appropriate, the periosteum. The first
sleeve-shaped part can cooperate with the implant via
an upper flange surface on the latter. The second
sleeve-shaped part can be engaged on the first sleeve-
shaped part. The second sleeve-shaped part preferably
has a narrowed part extending toward or into the bridge
for the purpose of cooperating with the fastening
member thereof.
Further embodiments of the invention are set out inter
alia in the attached dependent claims concerning the
novel arrangement.
By means of what has been proposed above, advantages
are obtained which permit great freedom in the
procurement and use of the components in connection
with the installation of carbon fiber bridges. Accurate
components can be obtained and used. The conditions for
a good installation result with very good esthetics can
be achieved at the same time as possibilities for a
greater number of variations of bridges, for example
also narrow ones.

A presently proposed embodiment of a method and an
arrangement according to the invention will be
described below with reference to the attached
drawings, in which
Figure 1 shows a vertical section through an implant
in a bridge, with a spacer member comprising
first and second sleeve-shaped parts, and
Figure 2 shows a vertical and exploded view of implant
and spacer member according to Figure 1.
In Figure 1, an implant is indicated by 1. Spacer
members connected to the implant are indicated by 2.
Parts of a carbon fiber bridge are shown by 3. The
bridge or equivalent is anchored to two or more
implants according to Figure 1. Only one implant with
associated spacer member is shown in Figure 1, since
the different implants and spacer members can have the
same or essentially the same structures. Reference is
made. here to the aforementioned WO document. The
implant is anchored in a jaw bone which is indicated
symbolically by 4 and which is provided at the top with
a gum 5 or soft tissue. The oral epithelium of the gum
is indicated by 6, and the fibers in the gingiva of the
gum are indicated by 7. In addition, periosteum around
the outer surface la of the implant has been indicated
by 8. The implant can be anchored in the jaw bone 4 in
a manner known per se, for example by means of outer
threads (not shown) on the implant. The implant can be
screwed into the jaw bone via a preliminary threading
in the latter. Alternatively, the implant can be of the
self-tapping kind. The spacer member of the respective
implant can comprise a first sleeve-shaped part 9 and a
second sleeve-shaped part 10. The first sleeve-shaped
part can have grooves 9a. The second sleeve-shaped part
has a first part 10a and a second part 10b. The first
part 10a has the form of a sleeve which can be engaged
over the first sleeve-shaped part 9. The sleeve-shaped

part 10a thus encloses the grooves 9a. On its outside,
the second sleeve-shaped part has an inclined outer
surface 10c. The first sleeve-shaped part 9 has a low
height and, in the state shown in Figure 1, is
substantially level with the top surface 6a of the
epithelium 6 at the spacer member. The first part 10a
of the second sleeve-shaped part has an extent in
length or height which only slightly exceeds the length
or height of the first sleeve-shaped part. The
inclination 10c can be considered to essentially adjoin
the top surface 6a of the epithelium 6. The second part
10b of the second sleeve-shaped part 10 has or can have
a relatively small cross section, which means that the
bridge structure 3 in question can be made very narrow.
This means that fastening members 11 in the bridge 3
can be made with a relatively small dimension or width
B. The bridge can thus be made relatively narrow in the
transverse direction on a jaw bone/soft tissue.
The first sleeve-shaped part 9 can be anchored in the
implant by means of a screw 12. The screw head 12a
extends level with the inclined transition surface 10c
on the outside of the second sleeve-shaped part. The
second sleeve-shaped part is guided against the first
sleeve-shaped part via an inner surface 10a on the
first part 10a. In addition, the second sleeve-shaped
part is guided against the outer surface 12a' of the
screw head via an inner surface 10b' on the second part
10b. By means of this arrangement, the first and second
sleeve-shaped parts 9 and 10 can' on the one hand be
joined together in the position shown in Figure 1 and,
on the other hand, can be separated so that the first
sleeve-shaped part 9 can maintain its position
according to the figure and the second sleeve-shaped
part 10 can follow along with the bridge or can form an
independent or free part when the bridge is to be
detached temporarily from the implants, for example
after testing. Definitive locking between the first and
second parts can be obtained with, for example, the

screw 12 which expands the first sleeve-shaped part 9
in the space 10d.
In Figure 2, the various parts of implant 1, first
sleeve part 9, screw 12, and second sleeve part.' 10 are
shown separately and in detail. The implant 1 can be of
a type known per se and can have a length L of likewise
known type. The implant is provided inter alia with an
internal, thread lb and an outer support flange 1c for
the first sleeve-shaped part 9 which can bear against
the flange 1c via an end surface 9c. At its upper
parts, the first sleeve-shaped part is provided with
spring arrangements by means of which the implant screw
can be maintained in its position shown in 'Figure 1.
The implant screw comprises an outer thread 12b which
can cooperate with the internal thread 1b in the
implant. The screw has a cone-shaped outer surface 12c
at its screw head 12a. This cone-shaped surface 12c can
cooperate with . a corresponding inclined cone-shaped
surface 9d in the first sleeve-shaped part. The first
sleeve-shaped part has a length or height L' which is
about 1/3 of the length or height L of the implant. The
second sleeve-shaped part 10 has a narrowed part with a
width B' which can constitute ca. 70% of a width B' of
the first part 10a of the second sleeve-shaped part.
The second sleeve-shaped part has a length or height
L' which can be approximately the same length as the
length or height L of the implant. By means of the
narrowed part, the bridge in question (see figure 3 in
Figure 1) can be made relatively harrow in relation to
the previously known technique according to the
aforementioned WO. document. The height or length L' of
the first sleeve-shaped part corresponds substantially
to the thickness of the soft tissue (see 5 in Figure
1) . By means of the arrangement shown, the first
sleeve-shaped part can be considered as being extended
downward in the region of the fibers 7 of the gingiva.
By virtue of the fact that the first sleeve-shaped part
remains in its position according to Figure 1, any

biological incorporation that has started does not have
to be interrupted or destroyed if the bridge is to be
removed after a time, e.g. for testing or adjustment.
In Figure 2, a portion of the second sleeve-shaped, part
cooperating with fastening member 11 is indicated
symbolically by 10e. The length L' of the first sleeve-
shaped part is approximately 1/3 of the length L" of
the second sleeve-shaped part. The thickness of the
soft tissue in Figure 1 is indicated by T.
The invention is hot limited to the embodiment
described above by way of example, and instead it can
be modified within the scope of the attached patent
claims and the inventive concept.

WE CLAIM:
1. An arrangement for anchoring a bridge (3) in a position relative to a dental
implant (1) comprising a-spacer member (2), which on the one hand
cooperates with the implant and on the other hand permits anchoring
through cooperation with a fastening members arranged in the bridge,
wherein the spacer members of the implant comprise a first and a second
sleeve-shaped parts, where the first sleeve-shaped part (9) cooperates
with the implant and the second sleeve-shaped part (10) can be joined to
and separated from the first sleeve-shaped part and has a portion (10e)
which can cooperate with the fastening member in question, and wherein
the second sleeve-shaped part (10) has a first part in the form of a lower
sleeve-shaped portion (10a), which can be engaged over an upper portion
of the first sleeve-shaped part (9), and a second part which supports the
portion (10e) which can cooperate with the fastening member, the
arrangement further comprising a screw (12) for anchoring the first sleeve-
shaped part to the implant, characterized in that the first sleeve-shaped
part (9) has grooves (9a), wherein the first part of the second sleeve-
shaped part encloses the grooves (9a), and the second part of the second
sleeve-shaped part (10) is narrower than the first part of the second
sleeve-shaped part.

2. The arrangement as claimed in patent claim 2, wherein the arrangement
comprises the implant, and the first sleeve-shaped part cooperates with
the implant via an upper flange surface (1c) on the latter.
3. The arrangement as claimed in patent claim 1, wherein the first and
second parts of the second sleeve-shaped part merger on the outside via
an inclined outer surface (10c).
4. The arrangement as claimed in patent claim 1 or 3, wherein the second
part (10b) is included in a bridge construction included in the arrangement.
5. The arrangement as claimed in any of the previous claims, wherein the
width {(By of the second part of the second sleeve-shaped part is about
70% of the width (B"),of the first part (10a) of the second sleeve-shaped
part.


An arrangement for anchoring a bridge (3) in a position relative to a dental
implant (1) comprising a-spacer member (2), which on the one hand cooperates
with the implant and on the other hand permits anchoring through cooperation
with a fastening members arranged in the bridge, wherein the spacer members
of the implant comprise a first and a second sleeve-shaped parts, where the first
sleeve-shaped part (9) cooperates with the implant and the second sleeve-
shaped part (10) can be joined to and separated from the first sleeve-shaped part
and has a portion (10e) which can cooperate with the fastening member in
question, and wherein the second sleeve-shaped part (10) has a first part in the
form of a lower sleeve-shaped portion (10a), which can be engaged over an
upper portion of the first sleeve-shaped part (9), and a second part which
supports the portion (10e) which can cooperate with the fastening member, the
arrangement further comprising a screw (12) for anchoring the first sleeve-
shaped part to the implant, characterized in that the first sleeve-shaped part (9)
has grooves (9a), wherein the first part of the second sleeve-shaped part
encloses the grooves (9a), and the second part of the second sleeve-shaped part
(10) is narrower than the first part of the second sleeve-shaped part.

Documents:

01565-kolnp-2006 correspondence others.pdf

01565-kolnp-2006 form-26.pdf

01565-kolnp-2006-abstract.pdf

01565-kolnp-2006-claims.pdf

01565-kolnp-2006-correspondence.pdf

01565-kolnp-2006-description (complete).pdf

01565-kolnp-2006-drawings.pdf

01565-kolnp-2006-form-1.pdf

01565-kolnp-2006-form-18.pdf

01565-kolnp-2006-form-2.pdf

01565-kolnp-2006-form-3.pdf

01565-kolnp-2006-form-5.pdf

01565-kolnp-2006-international publication.pdf

01565-kolnp-2006-international search authority report.pdf

01565-kolnp-2006-pct form.pdf

1565-KOLNP-2006-ABSTRACT 1.1.pdf

1565-KOLNP-2006-AMANDED CLAIMS.pdf

1565-KOLNP-2006-ASSIGNMENT.1.3.pdf

1565-KOLNP-2006-ASSIGNMENT.pdf

1565-KOLNP-2006-CORRESPONDENCE.1.3.pdf

1565-KOLNP-2006-CORRESPONDENCE.pdf

1565-KOLNP-2006-DESCRIPTION (COMPLETE) 1.1.pdf

1565-KOLNP-2006-DRAWINGS 1.1.pdf

1565-KOLNP-2006-EXAMINATION REPORT REPLY RECIEVED.pdf

1565-KOLNP-2006-EXAMINATION REPORT.1.3.pdf

1565-KOLNP-2006-FORM 1 1.1.pdf

1565-KOLNP-2006-FORM 1-1.2.pdf

1565-KOLNP-2006-FORM 1.1.3.pdf

1565-KOLNP-2006-FORM 18.1.3.pdf

1565-KOLNP-2006-FORM 2 1.1.pdf

1565-KOLNP-2006-FORM 2-1.2.pdf

1565-KOLNP-2006-FORM 26.1.3.pdf

1565-KOLNP-2006-FORM 3 1.1.pdf

1565-KOLNP-2006-FORM 3-1.2.pdf

1565-KOLNP-2006-FORM 3.1.3.pdf

1565-KOLNP-2006-FORM 5 1.1.pdf

1565-KOLNP-2006-FORM 5-1.2.pdf

1565-KOLNP-2006-FORM 5.1.3.pdf

1565-KOLNP-2006-FORM 6.1.3.pdf

1565-KOLNP-2006-FORM 6.pdf

1565-KOLNP-2006-FORM-27.pdf

1565-KOLNP-2006-GRANTED-ABSTRACT.pdf

1565-KOLNP-2006-GRANTED-CLAIMS.pdf

1565-KOLNP-2006-GRANTED-DESCRIPTION (COMPLETE).pdf

1565-KOLNP-2006-GRANTED-DRAWINGS.pdf

1565-KOLNP-2006-GRANTED-FORM 1.pdf

1565-KOLNP-2006-GRANTED-FORM 2.pdf

1565-KOLNP-2006-GRANTED-LETTER PATENT.pdf

1565-KOLNP-2006-GRANTED-SPECIFICATION.pdf

1565-KOLNP-2006-OTHERS PCT FORM.pdf

1565-KOLNP-2006-OTHERS.1.3.pdf

1565-KOLNP-2006-OTHERS.pdf

1565-KOLNP-2006-PA.pdf

1565-KOLNP-2006-PETITION UNDER RULE 137.pdf

1565-KOLNP-2006-REPLY TO EXAMINATION REPORT.1.3.pdf

abstract-01565-kolnp-2006.jpg


Patent Number 249002
Indian Patent Application Number 1565/KOLNP/2006
PG Journal Number 38/2011
Publication Date 23-Sep-2011
Grant Date 20-Sep-2011
Date of Filing 07-Jun-2006
Name of Patentee NOBEL BIOCARE SERVICES AG
Applicant Address POSTFACH, CH-8058 ZURICH-FLUGHAFEN SWITZERLAND
Inventors:
# Inventor's Name Inventor's Address
1 BRAJNOVIC, IZIDOR SMORSLOTTSGATAN 4 S-416 77 GOTEBORG
PCT International Classification Number A61C 8/00
PCT International Application Number PCT/SE2004/001553
PCT International Filing date 2004-11-22
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 0303461.8 2003-12-22 Sweden