U.S. patent application number 14/357565 was filed with the patent office on 2014-10-30 for milling block, method for producing partial or total prostheses, and complete milling block system.
The applicant listed for this patent is Merz Dental GmbH. Invention is credited to Carola Frolich, Friedhelm Klingenburg.
Application Number | 20140317930 14/357565 |
Document ID | / |
Family ID | 47216191 |
Filed Date | 2014-10-30 |
United States Patent
Application |
20140317930 |
Kind Code |
A1 |
Klingenburg; Friedhelm ; et
al. |
October 30, 2014 |
MILLING BLOCK, METHOD FOR PRODUCING PARTIAL OR TOTAL PROSTHESES,
AND COMPLETE MILLING BLOCK SYSTEM
Abstract
Embodiments relate to a milling block for producing partial or
total prostheses, comprising a prosthesis base to be processed
according to the shape of the jaw, on which synthetically moulded
teeth, preferably a full set of teeth, are provided, a milling
block system consisting of a first milling block for the upper set
of teeth and a second milling block for the lower set of teeth, and
a method for producing partial or total prostheses.
Inventors: |
Klingenburg; Friedhelm;
(Lutjenburg, DE) ; Frolich; Carola; (Ulm,
DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Merz Dental GmbH |
Lutjenburg |
|
DE |
|
|
Family ID: |
47216191 |
Appl. No.: |
14/357565 |
Filed: |
November 9, 2012 |
PCT Filed: |
November 9, 2012 |
PCT NO: |
PCT/EP2012/004665 |
371 Date: |
May 10, 2014 |
Current U.S.
Class: |
29/896.1 ;
433/199.1 |
Current CPC
Class: |
A61C 13/20 20130101;
A61C 13/0004 20130101; A61C 13/0006 20130101; A61C 13/0022
20130101; A61C 13/01 20130101; G16H 20/40 20180101; Y10T 29/49567
20150115 |
Class at
Publication: |
29/896.1 ;
433/199.1 |
International
Class: |
A61C 13/01 20060101
A61C013/01; A61C 13/00 20060101 A61C013/00; A61C 13/20 20060101
A61C013/20 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 11, 2011 |
DE |
10 2011 118 320.9 |
Claims
1-26. (canceled)
27. A milling block for producing partial or total prostheses,
characterised by a prosthesis base to be processed according to the
shape of the jaw, on which synthetically moulded teeth, preferably
of a full set of teeth, are provided.
28. The milling block according to claim 27, characterised in that
the prosthesis base and the teeth are made in one piece.
29. The milling block according to claim 27, characterised in that
the teeth are aligned according to an occlusion position.
30. The milling block according to claim 27, characterised in that
the teeth are aligned according to the bite registration.
31. The milling block according to claim 27, characterised in that
the prosthesis base is configured in two parts consisting of a
first region to be processed and a second region having the
synthetically moulded teeth, the first and the second region
preferably being connected to the prosthesis base by
polymerisation.
32. The milling block according to claim 27, characterised in that
the prosthesis base can be processed individually according to the
contour of a patient's oral cavity.
33. The milling block according to claim 27, characterised in that
ceramics such as glass ceramic, leucite-reinforced ceramic,
aluminium-reinforced ceramic, oxide ceramic, zirconium oxide
ceramic, infiltration ceramic, feldspar ceramics or lithium
disilicate ceramic are used as materials.
34. The milling block according to claim 27, characterised in that
PMMA plastics, thermoplastics, PEEK nylon composite, organically
and inorganically filled plastics, low-allergy plastics,
out-burnable materials and/or sintered materials are used as
materials.
35. The milling block according to claim 27, characterised in that
the milling blocks can be used for the combined dental prosthesis,
in particular with a metal base or metal plastic or ceramic base
with plastic teeth.
36. The milling block system consisting of a first milling block
for the upper set of teeth and a second milling block for the lower
set of teeth according to a milling block according to claim 27,
each milling block having a prosthesis base which can be processed
according to the contour of a patient's oral cavity.
37. The milling block system according to claim 36, the teeth of
the upper set of teeth and of the lower set of teeth being arranged
in relation to one another in the occlusion position.
38. The milling block system according to claim 36, characterised
in that the teeth are aligned according to the bite
registration.
39. The milling block system according to claim 36, characterised
in that the milling block system has partial prostheses of at the
very least opposite quadrants.
40. The milling block system according to claim 36, characterised
in that the synthetically moulded teeth are polymerised into the
prosthesis base.
41. A method for producing partial or total prostheses which has
the following steps: (a) providing a first milling block for the
upper set of teeth and a second milling block for the lower set of
teeth according to claim 1; (b) determining the contour data of the
oral cavity of a patient; (c) preparing and/or processing the first
and the second milling block according to the contour data of the
oral cavity.
42. The method according to claim 41, the preparation and/or the
processing of the first and the second milling block taking place
by means of CAD/CAM systems.
43. The method according to claim 41, the teeth being positioned
for the occlusion position.
44. The method according to claim 41, the teeth being positioned
according to the Gysi, Gerber, APF, APF NT, TiF, Schreinemaker,
Staub Cranial positioning methods and/or further similar
positioning methods.
45. The method according to claim 41, the selected synthetically
moulded teeth being positioned on a second region of the prosthesis
base and this second region being joined to a first region of the
prosthesis base to be processed.
46. The method according to claim 45, the first and the second
region being joined by polymerisation, by adhesive bonding, by
pressing and/or melting together.
47. The method according to claim 41, the selected teeth being
pre-polymerised in the occlusion position in the first region
and/or then being finally polymerised with the second region.
48. The method according to claim 41, the prosthesis base being
able to be moulded individually according to the contour of the
oral cavity of a patient by inserting and adapting.
49. The method according to claim 48, the flexible prosthesis base
being hardened or solidified by heating, irradiating with light or
by the chemical reaction of at least two components present in the
prosthesis base.
50. The method according to claim 41, characterised in that the
palatinal and vestibular regions are not processed.
51. A method for providing a partial or total prosthesis,
preferably according to the method of claim 15, which includes the
selection of the milling block according to claim 1 or of the
milling block system according to claim 1 from a group of at least
3 different milling block sets or milling block system sets of at
least 3 different positioned rows of teeth provided for the
occlusion position, preferably comprising 14 teeth respectively for
the upper and the lower set of teeth.
Description
BACKGROUND OF THE DISCLOSURE
[0001] The invention relates to a milling block, to a method for
producing partial or total prostheses and to a complete milling
block system consisting of a first milling block for the upper set
of teeth and a second milling block for the lower set of teeth and
to a method for providing a partial or total prosthesis.
[0002] A method for producing a total prosthesis with an upper
and/or lower jaw base with the aid of a milling device is already
known from EP 0 501 983 B1, the respective base being milled from a
synthetic block and data on the oral cavity characterising the
contour or topography being used. This method described therein
also uses, after preparing the adapted base for the oral cavity,
the further procedural step of positioning the required teeth in
wax on the upper and/or lower jaw base, the prosthesis being
completed by connecting the teeth to the base with the aid of a
cold-curing polymer. Next the so-called reocclusion takes place so
that the respective patient is provided with an optimal bite
according to the latter's chewing movements.
[0003] This known method is therefore associated with the
disadvantage that after completion of the upper and/or lower jaw
base individual adaptation to the patient by appropriately
positioning the teeth in wax is required, and this in turn makes
the whole treatment sequence for the dentist and dental technician
time-consuming and expensive.
BRIEF SUMMARY OF THE DISCLOSURE
[0004] In an embodiment, a milling block for producing partial or
total prostheses is provided. The milling block may include a
prosthesis base to be processed according to the shape of the jaw,
on which synthetically moulded teeth, preferably of a full set of
teeth, are provided.
[0005] In an embodiment, a method for producing partial or total
prostheses is provided. The method may include providing a first
milling block for the upper set of teeth and a second milling block
for the lower set of teeth. The method may also include determining
the contour data of the oral cavity of a patient and preparing
and/or processing the first and the second milling block according
to the contour data of the oral cavity.
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] FIG. 1 illustrates a milling block in accordance with an
embodiment.
[0007] FIG. 2 illustrates a prosthesis of the lower jaw in
accordance with an embodiment.
DETAILED DESCRIPTION OF THE INVENTION
[0008] It is therefore the object of the following invention to
provide a milling block and a method for producing partial or total
prostheses as well as a complete milling block system which avoid
the disadvantages of the prior art.
[0009] Furthermore, it is the object of the following invention to
reduce the working steps for individual adaptation to the
patient.
[0010] According to the invention it is proposed in order to
achieve the objects to provide a milling block for producing
partial or total prostheses wherein a prosthesis base with
synthetically moulded teeth of a full set of teeth is provided that
is to be processed according to the shape of the jaw. Within this
context, the corresponding milling block system is also equipped as
regards the upper set of teeth and the lower set of teeth
independently of the fastening in the mouth.
[0011] With this measure according to the application it is made
possible for only the prosthesis base to have to be milled or
moulded, and with correct milling according to given CAD/CAM data
on the oral cavity of the patient no further adaptation has to be
made due to synthetically moulded teeth already anchored on the
prosthesis base.
[0012] By appropriately optimised adaptation and adjustment of the
prosthesis base to the oral cavity just one individual adaptation
step is therefore required in order to provide for the patient
optimally.
[0013] Due to the presence of a milling block or milling block
system according to the application wherein there is an appropriate
jaw shape for the prosthesis base to be processed with
synthetically moulded teeth, one need neither take an impression of
the bite in order to determine the maxillomandibular relationship
nor undertake a time-consuming and expensive fitting.
[0014] With the measure according to the application subsequent
insertion into an articulator to determine the positioning of the
teeth is not therefore required because the synthetically moulded
teeth are already prepared according to given basic data for the
occlusion position.
[0015] According to the method according to the application for
providing a partial or total prosthesis it is therefore possible
that on the basis of the presence of upper and lower rows of teeth
present in the form of the set of teeth in the occlusion position
at least three different milling block systems in different
proportions in the form of the set of teeth and size of the teeth
can be provided in order to be able to provide for almost all
patients. With this measure a time efficient and cost effective
production method is achieved, and it is made possible for dentists
and/or dental technicians to provide fully for the population in
all countries.
[0016] Unlike the known dental prostheses and production methods
for the latter the milling block according to the invention is
based on a one-piece arrangement with a first region, which has a
prosthesis base that can be processed according to the shape of the
jaw, and a second region with a predetermined or standardised
arrangement of synthetically moulded teeth or rows of teeth for
upper or lower jaw sets of teeth. Therefore, as a preliminary stage
for the dental prosthesis a milling block is provided which, in a
particularly cost- and time-saving manner, can only be processed,
i.e. milled, in its first region, namely the prosthesis base in
order to be adapted to the shape of the jaw. The milling block
system according to the invention comprises at least a first
milling block for the upper set of teeth and a second milling block
for the lower set of teeth, i.e. the preliminary stages of a
partial or total prosthesis, which in the respective second region
of the first and/or second milling block has a predetermined or
standardised arrangement of synthetically moulded teeth or rows of
teeth for the upper and lower jaw sets of teeth positioned
according to established occlusion principles.
[0017] A majority of premouldings known from the prior art with
different colours, sizes and shape combinations for the mucous
membrane region and tooth region for the production of the dental
prosthesis is considerably simplified with the present subject
matter of the invention by the predetermined or standardised
arrangement of synthetically moulded, polymerised in teeth or rows
of teeth for the upper or lower jaw sets of teeth. According to the
application it is advantageous that only the respective prosthesis
base assigned to the mucous membrane region is to be milled.
[0018] Moreover, the predetermined or standardised arrangement of
synthetically moulded teeth or rows of teeth for the upper and
lower jaw sets of teeth positioned according to established
occlusion principles are non-individualised, prefabricated dental
prosthesis parts which do not require any further
post-processing.
[0019] The predetermined or standardised arrangement of
synthetically moulded teeth or rows of teeth for the upper and
lower jaw sets of teeth positioned according to established
occlusion principles takes place according to a selection of
prefabricated dental prosthesis parts, i.e. synthetically moulded
teeth or rows of teeth according to pre-specified and known
positioning systems.
[0020] Other advantageous further developments of the invention are
the subject matter of the sub-claims.
[0021] If, moreover, the synthetically moulded teeth and the
prosthesis base are made in one piece, when producing the milling
block a casting or pressing mould can almost be used which
therefore also respectively uses just one material for the milling
block which advantageously has both a smaller allergy potential and
a higher bond strength.
[0022] If, advantageously, the milling block is configured in two
parts, it is thus made possible for the first region, that is
processed according to the shape of the jaw, to be produced in a
standardised manner and to be joined to different teeth, likewise
already positioned on a second region, which are of different sizes
and have different factors. With the further development that the
prosthesis base can be configured flexibly, simplified adaptation
to the oral cavity and adaptation to the shape of the jaw of the
respective patient can be allowed for.
[0023] Materials featured as particularly advantageous for the
milling block and for the milling block system, i.e. the prosthesis
base and/or teeth, are, among others, so-called PMMA plastics, as
are also thermoplastics, organically and inorganically filled
plastics and also low-allergy plastics. In addition, it is also
advantageous to use any form of ceramic, in particular glass
ceramics, leucite-reinforced ceramic, aluminium-reinforced ceramic,
oxide ceramic, zirconium oxide ceramic, infiltration ceramic,
feldspar ceramics, lithium disilicate ceramic. It is also
conceivable to use materials that have been sintered, but that
still require a further production step. The milling block or the
milling block system can also be used with a combined dental
prosthesis.
[0024] If the teeth are already aligned according to an occlusion
position, total adaptation to the patient's oral cavity is
therefore only undertaken by appropriately milling the prosthesis
base. The patient can therefore be certain that with appropriate
adaptation to the oral cavity or to the upper and lower jaw an
optimal occlusion position is provided and so there is
advantageously an unrestrictedly functional total prosthesis as
regards the bite characteristics. Due to the milling block or
milling block system according to the application and the
corresponding method for producing partial or total prostheses it
is possible, for example, to provide at least three different sizes
with which a complete total prosthesis can be provided for almost
every patient according to the shape of the patient's face and the
size of the patient's oral cavity. Due to the simplicity of the
adaptation of the total prosthesis the working steps for the
adaptation to the oral cavity are therefore considerably reduced
and so are also less expensive. Based on experience, with specific
groups of the population the milling block system can also include
just two types or more.
[0025] With regard to the preparation and positioning of the
synthetically moulded teeth, with the milling block, milling block
system according to the invention and the corresponding method all
possible, previously known positioning systems for this purpose can
be used, such as e.g. the so-called original positioning systems
derived from Gysi, Gerber and Schreinemaker. Positioning systems
according to APF and APF NT and TiF based on the Gysi and Gerber
positioning techniques can also be used advantageously. According
to Staub Cranial a mathematically calculating positioning technique
is used which determines the original position of the teeth on the
basis of measurements taken and accordingly positions again.
[0026] The milling block or the milling block system according to
the application can also be used in particular for the production
of partial prostheses if at the very least opposite quadrants of
the upper or lower sets of teeth can be used. Due to the
positioning prepared for the teeth in the occlusion position, after
inserting in and adapting to the corresponding jaw region
post-processing of the teeth is therefore also practically
unnecessary.
[0027] One particularly advantageous production technique for the
milling block or for the milling block system is the possibility of
inserting the selected teeth, pre-polymerised, in the occlusion
position in the first region of the prosthesis base and then only
undertaking the final polymerisation upon joining to the second
region of the prosthesis base. In this way it is made possible for
the respective upper and lower jaw prosthesis to be prepared and
produced in one piece and form- and force-fitted, and so it has a
lower allergy potential and a higher bond strength.
[0028] Further embodiments of the present invention are the subject
matter of the other sub-claims.
[0029] With the milling block or milling block system according to
the application it is made possible for fixing or marking of any
type for a zero position transfer or zero point transfer for the
automatic CAD/CAM processing to be undertaken. This makes it
possible to save a huge amount of time, in particular due to
dispensing with scanning, in order to achieve the positioning and
prevents defective processing in a CAD/CAM system.
[0030] The milling block and the milling block system according to
the application and the method for producing partial or total
prostheses are described below in examples by means of the
drawings.
[0031] In FIG. 1 a milling block 1 is shown which has a prosthesis
base 3 which is processed according to the shape of the jaw on
which synthetically moulded teeth 5 of a full set of teeth are
already provided. The synthetic teeth are already worked such that
the teeth are aligned according to an occlusion position and so can
interact optimally with the upper jaw (not shown). In this
illustration, for example, the prosthesis base and the teeth are
made in one piece, and so the production process has been
simplified.
[0032] In FIG. 2 the completed total prosthesis of the lower jaw is
shown, the prosthesis base 3 already being adapted to the oral
cavity. FIG. 2 clearly shows how the shape of the oral cavity has
been milled out of the prosthesis base, the teeth 5, which are
aligned in the occlusion position, remaining untreated. It is thus
made possible with the method according to the application that
only by adapting the prosthesis base is there a complete total
prosthesis the occlusion of which is coherent and does not
necessitate any further procedural step, such as for example
adaptation in an articulator. A further procedural step, as
specified for example in the prior art, namely subsequent alignment
by arranging the teeth in wax in order to achieve the occlusion
position, is not necessary with the method according to the
application.
* * * * *