IL264788A - Dynamic modular dental prosthesis - Google Patents

Description

1 MODULAR DENTAL PROSTHESIS FIELD OF THE INVENTION The present invention relates to dental prosthesis. More particularly, the present invention relates to modular dental prosthesis assembly and a method of assembling the prosthesis.

BACKGROUND OF THE INVENTION Dental implants are widely used and dental implantology is considered as a routine procedure in restoration of missing teeth. The dental implants can be considered as artificial roots on which prosthesis is constructed.

However, the whole procedure requires experience, skills, time, and preciseness. A single tooth implant comprises three parts: the implant root, the post that supports the prosthetic tooth (abutment) and the prosthetic tooth. The prosthetic or artificial tooth may be cemented onto the post or held in place with a tiny screw.

Patent Application Publication EP 1547543 A1, entitled “Abutment For Dental Implants”, which is incorporated by reference herein, discloses an abutment for anchoring a dental prosthesis on a dental implant with a post arrangement that is associated with a screw- in construction to be screwed into the dental implant, between the pole arrangement and a ball joint on the screw-in construction. 2 Patent Application Publication FR 2766354 A1, entitled “Dental Prosthesis Support For Implanting In The Maxillary Or Mandibular Bone”, which is incorporated by reference herein, discloses an implant body (2) intended to be implanted in the bone tissue, a part (12) capable of being angularly oriented relative to the implant body, in order to be able to support a dental prosthesis inclined in the desired direction, and an elongated connecting element (13), one end of which is screwed into a central thread (2a) of the implant body and the other end of which is screwed into the abutment stump (13) with a bendable intermediate part (15).

Patent Application Publication US 20180140390 A1, entitled “Structure Enabling Continuous Angular Adjustment For Fixing A Single Dental Device Into An Implant”, which is incorporated by reference herein, discloses a structure enabling continuous angular adjustment for fixing a single dental device into an implant. The structure is formed from a ringwise tiltable threaded shank projecting from the implant and a dental device fixing unit comprising a fixing element for fixing the threaded shank to the implant.

Patent Application Publication EP 0580945 A1, entitled “Endo-Osseous Tooth Implant For A Fixed Dental Prosthesis And A Fixing Tool”, which is incorporated by reference herein, discloses an enossal dental implant for a fixed denture, with an essentially cylindrical round body (10) made of metal that can be implanted in the jawbone, where, with the interposition of an intermediate sleeve made of elastic material, an implant post (30 ) can be screwed.

Patent Application Publication EP 2647347 A1, entitled “Prosthetic Attachment”, which is incorporated by reference herein, discloses a prosthetic attachment comprising a support piece (1) which can be fixed in a dental implant (2) and a mounting assembly which can be coupled to a prosthetic structure (3), wherein the joint between the support piece (1) and the mounting assembly is a ball-and-socket type joint, such that the mounting assembly is rotatively coupled. 3 Still, there are many difficulties in achieving prosthetic teeth that endure mastication loads. Tremendous loads are generated on natural as well as on prosthetic teeth. The loads are mainly compressive, but there are also side forces and tensile forces that are generated upon chewing sticky foods.

One of the problems related to prosthetic teeth in general is the adjustment of the angle of the artificial teeth relative to the implant root and adjusting the abutment centrality, Nowadays, the process of replacing partial denture with implants requires many dentist appointments, requires vast of laboratory work, some of the treatments are inconvenient, the whole process is not sterile and part of the treatments are daily. The adjustment of the angle between the teeth and the implant and corrections of the angle and the centrality of the abutment are made by laboratory work in the design of the denture itself. The corrections in the teeth design produce teeth that do not endure the mastication loads and may break or crack after a while.

There is a long last need to obtain aesthetic artificial teeth that can be easily measured and adjusted with lesser dentist appointments and lesser laboratory work. Modular artificial teeth that can be measured directly by the dentist without the need for further laboratory work can cost less and will be of higher strength. Modular teeth can be mounted on an existing implant in a simple and fast procedure.

It is an object of the present invention to provide modular dental prosthesis assembly that can be mounted on a standard implant root and are of especially high quality regarding strength and endurance against mastication load, colors, sizes, adjustment to the mouth of the patient etc.

It is another object of the present invention to provide modular dental prosthesis assembly that can be measured directly by the dentist while laboratory work is markedly 4 reduced. Mounting the artificial teeth on the implant is simple and the dentist can perform the procedure quickly and accurately.

It is yet another object of the present invention to provide modular dental prosthesis assembly having a unique abutment that endures the tremendous loads applied on the tooth and is easily adjusted in the mouth of the patient by the dentist without the need to compensate on lack of abutment centrality by the artificial tooth design.

Yet, it is another object of the present invention to provide a method of assemble the prosthesis parts so as to enable the dentist to accurately construct the prosthesis in the patient mouth.

It is thus provided a modular dental prosthesis adapted to be constructed on an implant implanted in a jawbone, the implant having an inner hole provided with screw thread and a base that protrudes beyond the jawbone and is adapted to receive the dental prosthesis, said modular dental prosthesis comprises: an abutment comprises a screw adapted to be screwed in the inner hole of the implant, and a head adapted to support an artificial tooth; a fastening ring adapted to firmly fixate said screw in the implant's hole; a member comprises a base and a conical portion, said base is adapted to be adhered onto said head of said abutment; whereby a dentist can adjust the member onto the abutment before it is adhered so as to arrange a corresponding angle between the conical member that accommodates the artificial tooth and the abutment that is concentric relative to the implant so that the modular dental prosthesis fits specific dental conditions.

In accordance with another preferred embodiment of the present invention, the head of said abutment is square.

In accordance with another preferred embodiment of the present invention, said fastening ring is provided with an adaptor that corresponds the base of the implant.

In accordance with another preferred embodiment of the present invention, said adaptor is a hexagonal recess that is adapted to correspond a hexagonal connector provided in the implant's base.

In accordance with another preferred embodiment of the present invention, said adaptor is a hexagonal connector that is adapted to correspond a hexagonal recess in the implant's base.

In accordance with another preferred embodiment of the present invention, a portion of said head of said abutment corresponds a rim provided in said fastening ring so that when the abutment is fully screwed inside the implant, the fastening ring fixates the abutment to the implant so as to prevent any relative movements between them.

In accordance with another preferred embodiment of the present invention, said member is adhered to said abutment using acrylic material.

In accordance with another preferred embodiment of the present invention, said member is made from a plastic material that can be converted by molding process to a metallic material.

It is also provided with accordance with another preferred embodiment of the present invention, modular dental prosthesis comprising: an implant provided with a screw that is adapted to be screwed into a jawbone, said implant having an inner hole provided with screw thread, and a base that protrudes beyond the jawbone; 6 an abutment comprises a screw adapted to be screwed in the inner hole of said implant, and a head adapted to support an artificial tooth; a fastening ring adapted to firmly fixate said screw in the implant's inner hole; a member comprises a base and a conical portion, said base is adapted to be adhered onto said head of said abutment; whereby a dentist can adjust the member onto the abutment before it is adhered so as to arrange a corresponding angle between the conical member that accommodates the artificial tooth and the abutment that is concentric relative to said implant so that the modular dental prosthesis fits specific dental conditions.

In accordance with another preferred embodiment of the present invention, the head of said abutment is square.

In accordance with another preferred embodiment of the present invention, said fastening ring is provided with an adaptor that corresponds the base of said implant.

In accordance with another preferred embodiment of the present invention, said adaptor is a hexagonal connector that is adapted to correspond a hexagonal recess in the implant's base.

In accordance with another preferred embodiment of the present invention, a portion of said head of said abutment corresponds a rim provided in said fastening ring so that when the abutment is fully screwed inside said implant, the fastening ring fixate the abutment to the implant so as to prevent any relative movements between them.

In accordance with another preferred embodiment of the present invention, said member is adhered to said abutment using acrylic material. 7 In accordance with another preferred embodiment of the present invention, said member is made from a plastic material that can be converted by molding process to a metallic material.

It is therefore thus provided in accordance with yet another preferred embodiment of the present invention, a modular dental prosthesis adapted to be constructed on an implant implanted in a jawbone, the implant having an inner hole provided with screw thread and a base that protrudes beyond the jawbone and is adapted to receive the dental prosthesis, said modular dental prosthesis comprises: an abutment comprises a screw adapted to be screwed in the inner hole of the implant, and a head adapted to support an artificial tooth; a seat having two opposite sides, a side facing the implant provided with a corresponding connector adapted to firmly fixate said screw in the implant's hole and a side facing the teeth a bore is provided in said side facing the implant, the bore is adapted to receive said head so as to secure the head in the bore; a crater provided in said side facing the teeth, said crater is adapted to receive a pestle-like member that is partially confined in said crater; whereby a dentist can adjust the position of the pestle-like member in the crater before it is adhered so as to arrange a corresponding angle between the pestle-like member that accommodates the artificial tooth and the implant.

In accordance with another preferred embodiment of the present invention, said head is provided with a rim and wherein the prosthesis further comprises a screw that is adapted to be screwed through the seat and secure said head inside said bore. 8 In accordance with another preferred embodiment of the present invention, said corresponding connector is hexagonal and is adapted to be connected to a corresponding connector is the implant's base.

It is thus provided in accordance with another preferred embodiment of the present invention, a method of assembling and constructing a modular dental prosthesis, said method comprises: providing an abutment that comprises a screw and a head; providing a fastening ring; screwing said screw in an inner hole of an implant that is implanted in a jawbone, wherein said fastening ring is positioned between said screw and said implant and said screw pass through said fastening ring; providing a member comprises a base and a conical portion, wherein said member is made of a plastic material; adhering said member onto the head of said abutment while adjusting a corresponding angle between said member and said abutment to adjust specific dental conditions; unscrewing said abutment from said implant; converting the plastic material of the member with metallic material; screwing said abutment provided with the converted member into the implant; adhering an artificial tooth onto said conical portion. 9 It is also provided in accordance with another preferred embodiment of the present invention, a method of assembling and constructing a modular dental prosthesis, said method comprises: providing an implant having a screw and provided with an inner hole and a base, wherein said inner hole is provided with a screw thread; screwing said implant into a jawbone wherein said base protrudes beyond the jawbone; screwing said screw in the inner hole of said implant, wherein said fastening ring is positioned between said screw and said implant and said screw pass through said fastening ring; providing a member comprises a base and a conical portion, wherein said member is made of a plastic material; adhering said member onto the head of said abutment while adjusting a corresponding angle between said member and said abutment to adjust specific dental conditions; unscrewing said abutment from said implant; converting the plastic material of the member with metallic material; screwing said abutment provided with the converted member into said implant; adhering an artificial tooth onto said conical portion.

BRIEF DESCRIPTION OF THE FIGURES In order to better understand the present invention, and appreciate its practical applications, the following Figures are provided and referenced hereafter. It should be noted that the Figures are given as examples only and in no way limit the scope of the invention. Like components are denoted by like reference numerals Figure 1 illustrates an exploded view of a modular dental prosthesis assembly in accordance with a preferred embodiment of the present invention.

Figure 2 illustrates an isometric view of the modular dental prosthesis 20 assembly shown in Figure 1, in an assembled state.

Figure 3 illustrates a side view of a modular dental prosthesis assembly in accordance with another preferred embodiment of the present invention, in an assembled state.

Figure 4 illustrates a cross-sectioned side view of the fastening ring used for the modular prosthesis assembly shown in Figure 3.

Figure 5 illustrates an exploded view of a modular dental prosthesis assembly in accordance with yet another preferred embodiment of the present invention.

Figure 6 illustrates an isometric view of the modular dental prosthesis assembly show in figure 5, in an assembled state.

Figure 7 illustrates an exploded view of a modular dental prosthesis assembly in accordance with yet another preferred embodiment of the present invention.

Figure 8 illustrates a side view, with a partial section view, of a modular dental prosthesis assembly show in Figure 7, in an assembled state. 11 DETAILED DESRIPTION OF THE INVENTION AND THE FIGURES The present invention provides a new and unique dental prosthesis assembly that can be supplied to dentists in a modular manner so that a dentist can chose from a vast of options the appropriate prosthesis for a certain patient and certain dental conditions. The appropriate dental prosthesis is adjusted by the dentist without the need to perform numerous measurements and without the need to correct or compensate for lack in centrality of the abutment in a dental laboratory. The method of constructing the modular dental prosthesis assembly is relatively simple, do not require many dentist appointments and laboratory work, and partially diminishes infections related to dental treatments.

The dental prosthesis assembly of the present invention comprises two main parts that may be constructed on an existing implant or, optionally, the implant can be a standard implant that is an additional part of the assembly. A standard implant comprises a screw that is screwed in the jawbone in a standard and known manner and an upper part onto which the prosthesis parts are connected.

An abutment is screwed into the implant. The abutment comprises a screw that is screwed into an internal and corresponding hole in the implant and an abutment head. One of the unique features of the abutment is that it can be easily screwed and unscrewed into and out from the implant. The abutment can be easily removed from the mouth if the patient desires to change the artificial tooth color, for example, or the dentist wishes so, due to changes in dental conditions, for example. Between the abutment and the implant, a fastening ring is provided in order to fasten the internal screw of the abutment in the implant. The abutment's screw is substantially centered with respect to the implant screw.

The assembly is further provided with a temporary member that is attached to the abutment and is made from a plastic material. The temporary member is adapted to be connected to the abutment's head using an acrylic material, for example, in a corresponding 12 angle. It is important to notice that the attachment of the temporary member and the abutment is made by the dentist after choosing the appropriate member and the angle between the member and the abutment. After the connection had been accomplished, the temporary member that is preferably made from a plastic material is melted and converted into a permanent member, preferably made from a metallic material such as zirconium, that resembles in shape to the temporary member and is strong enough to endure mastication loads. The conversion of the materials of the temporary and permanent elements from a plastic material to the metallic material can be made in the dentist's clinic, in a dental laboratory, or in a factory.

The artificial tooth is mounted onto the permanent member in a color, shape, size or any other feature that fits the patient desires or his other natural 20 teeth.

Reference is now made to Figure 1 illustrating an exploded view of a modular dental prosthesis assembly in accordance with a preferred embodiment of the present invention. An implant 10 is adapted to be attached by screwing screw 12 to a jawbone of a patient into a corresponding hole (not shown in the figures) made by the dentist. Implant 10 may be a regular implant that is already implanted in the patient jaw or can be a part of the1 dental prosthesis assembly. The upper part of implant 10 comprises a base element 14 that rests on the jawbone and can be of different heights so as to adapt to the dental conditions in specific patient's mouth and other teeth. The base element 14 is provided preferably with hexagonal connector 16 that is adapted to connect-to an abutment as will be shown further on.

The assembly further comprises an abutment 18 that comprises a screw 20 and an abutment's head 22. Screw 20 is adapted to be attached to implant 10. Implant 10 is provided with an internal corresponding elongated hole having screw thread, whose opening 24 is in hexagonal connector 16. Screw 20 is adapted to be inserted through opening 24 and screwed inside the elongated hole. Screw 20 may be a universal screw that adapts any type of implant. 13 Between abutment 18 and implant 10, a fastening ring 24 is provided. Fastening ring 24 is adapted to be mounted on hexagonal connector 16 of implant 10, therefore, it is provided with a corresponding profile (cannot be seen in Figure 1). Screw 20 is adapted to pass through the hole of fastening ring 24 while a square rim 26 that is provided in the abutment, between screw 20 and abutment's head 22, is adapted to seat on a corresponding square profile 28 of fastening ring 24. Fastening ring 24 is adapted to fasten and firmly hold screw 20 inside the implant. One of the problems that are known today in the connection between an abutment and an implant is small motions of the screw inside the implant upon mastication pressures during bites. Fastening ring 24 prevents any movement of screw 20 in the implant and fixes abutment 18 inside the hole of the implant.

The modular dental prosthesis assembly of the present invention further provided with a member 30 onto which the artificial tooth is connected. Temporary member 30 is provided with a conical part 32 onto which the artificial tooth (cannot be seen in the Figures) is connected and a base part 34 that is mounted on abutment's head 22 as will be explained herein after.

Member 30 is further provided with a protrusion 36 that is used to hold the member during its adjustment to the abutment and is removed after the adjustments. Member 30, after adjustments as will be explained herein after, is replaced by a similar permanent member onto which the artificial tooth will be, actually, mounted and connected.

Reference is now made to Figure 2 illustrating an isometric view of the modular dental prosthesis assembly shown in Figure 1, in an assembled state. The method of assembling and constructing the modular dental prosthesis of the present invention is hereby explained. Screw (its "shadow” is shown in Figure 2) of abutment 18 is screwed in implant 10. Fastening ring 24 is mounted on implant 10 between the implant and abutment 18. Abutment's head 22 protrudes beyond fastening ring 24. The abutment and the implant are concentric. Temporary member 30 is mounted on abutment's head 22 while the dentist can adjust the suitable angle 14 between the conical part 32 and the abutment's head 22. Moreover, the dentist can choose from a variety of 10 abutments sizes and members sizes, the corresponding parts that are adapted to fit the specific patient.

Then, the dentist attaches the two parts together using, preferably, acrylic material. The adjustment and cementing procedures are made in the patient mouth so that part of the inconvenient measurements that are usually made by the dentist is avoided. Now, abutment 18 with attached member 30 is screwed off the implant.

When the two attached parts, the abutment and the member, are outside the mouth, member 30 is replaced into a permanent member that is molded in the same shape as the member. This process may be performed in the dentist's clinic, in a dental laboratory, or in a factory. The member is made from a plastic material that can be melted down or removed by combustion and converted into a permanent member that is molded in the same shape and size.

The permanent member is made from a hard material that is adapted to endure the mastication loads. The permanent member is usually made of a metallic material such as zirconium.

The artificial tooth (not shown in the Figures) is mounted and cemented onto the permanent member. The hole in the artificial tooth that ׳ accommodates the permanent member, can be designed, if necessary, so that it may accommodate part of the abutment's head.

Reference is now made to Figure 3 illustrating a side view of a modular 30 dental prosthesis assembly in accordance with another preferred embodiment of the present invention, in an assembled state.

Generally, the assembly is similar to the assembly shown in Figure 2, however, the assembly of the dental prosthesis fits an existing implant having an inner hexagonal recession.

Implant 50 is provided with a screw 52 that is screwed into the jawbone and an implant head 52 having a hexagonal seat 56.

Fastening ring 60 that is adapted to fixate abutment 18 into the corresponding hole in implant 50 is provided with a hexagonal connector 62 that corresponds hexagonal seat 56 in the implant's head.

Reference is now made to Figure 4 illustrating a cross-sectioned side view of the fastening ring used for the modular prosthesis assembly shown in Figure 3. Hexagonal connector 62 protrudes in the side that seats on implant 50 and the upper part of fastening ring 60 is provided with a square rim 64 that corresponds a portion 26 of abutment 18.

Returning to Figure 3, member 30, which is similar to the member shown in Figure 1, is mounted on abutment 18. The method of constructing the dental prosthesis is generally the same as the method explained herein before.

It is important to notice that the special and unique abutment can be easily adjusted; screwed or unscrewed, while on the other hand, is firmly fixed in the implant due to the fastening ring. The tooth can be easily and quickly replaced by another dental prosthesis if the dental state in the mouth is changed. Due to the modularity of the dental prosthesis, the dentist can easily adjust the temporary member and glue it onto the abutment with perfect compatibility and with the least dentist appointment and the least inconvenience.

Reference is now made to Figure 5 illustrating an exploded view of a modular dental prosthesis assembly in accordance with yet another preferred embodiment of the present invention. An implant 100, which may be a standard implant, is adapted to be attached to a jawbone of a patient by screwing screw 102 into a corresponding hole (not shown in the figures) made by the dentist. Implant 100 is similar to implant 50 shown in Figure 3. The upper part of implant 100 comprises a base element 104 that rests on the jawbone. Base element 104 is provided preferably with hexagonal connector 106 that is adapted to connect to an abutment 16 The assembly further comprises an abutment 108 that comprises a screw 110 and an abutment's head 112. Screw 110 is adapted to be attached to implant 100 similarly to the embodiment shown in Figure 1. Abutment's head 112 is provided with a rim 114 that protrudes laterally in respect with the head's circumference.

The assembly further comprises an abutment 108 that comprises a screw 110 and an abutment's head 112. Screw 110 is adapted to be attached to implant 100 similarly to the embodiment shown in Figure 1. Abutment's head 112 is provided with a rim 114 that protrudes laterally in respect with the head's circumference.

The modular dental prosthesis assembly of the present invention further provided with a member 120 onto which the artificial tooth is connected. Member 120 is provided with a seat 122 having two opposite sides. In the side that faces implant 100, a bore 124 is provided. Bore 124 is adapted to receive abutment's head 112 that is secured in the bore by screw 126 that is screwed through the body of seat 120 and restricts rim 114. On this side, seat 120 is further provided with preferably hexagonal connector that corresponds connector 106 of the implant.

The other side of seat 120, which faces the tooth side, is provided with a crater 128 into which a corresponding pestle 130 is provided. Crater 128 and pestle 130 act as a joint that impart the pestle with the ability to be positioned in any desired angle in respect with implant 100. An artificial tooth (cannot be seen in the Figures) is dressed on pestle 130 at the end of the procedure. The method of the artificial tooth implantation is basically similar to the method described herein before.

Reference is now made to Figure 7 illustrating an exploded view of a modular dental prosthesis assembly in accordance with yet another preferred embodiment of the present invention. An implant 41,which may be a standard implant, is adapted to be attached to a jawbone of a patient by screwing into a corresponding hole (not shown in the figures) made by 17 the dentist. The upper part of implant 41 comprises a pestle seat element 42 that rests on the jawbone. Seat element 42 is further provided with preferably hexagonal connector that corresponds connector 41 of the implant. The other side of seat 42, which faces the tooth side, is provided with a pestle into which a corresponding crater 43 is provided. Crater 43 and pestle 42 act as a joint that impart the pestle with the ability to be positioned in any desired angle in respect with implant 41. An artificial tooth (cannot be seen in the Figures) is dressed on 43 part at the end of the procedure. The method of the artificial tooth implantation is basically similar to the method described herein before.

Reference is now made to Figure 8 illustrating an isometric view of the modular dental prosthesis assembly shown in Figure 7, in an assembled state. The important features that can be seen in the figure are seat element 42 that is hidden partially inside implant 41 and partially inside crater 43 locked by screw 45. In addition, when dentist achieved the required angle in respect with implant 41 and order to lock it a screw 46 is screwing on discs 44 that locked and prevents the abutment movement. An artificial tooth (cannot be seen in the Figures) is dressed on 43 part at the end of the procedure. The method of the artificial tooth implantation is basically similar to the method described herein before. It is important to notice that the abutment in all the preferred embodiments shown herein in the Figures can be screwed into the implant bore without the need to remove the artificial tooth. It is possible to screw the abutment from the side of the tooth due to the fastening ring in the former embodiment or the seat in the later embodiment This feature reduces markedly complications in the rehabilitation of the artificial tooth.

The parts of the dental prosthesis are provided in high quality and in a variety of sizes and shapes and the dentist can choose from this variety without the need to perform numerous measurements in the patient's mouth Dental laboratory is also partially omitted since the parts are available for the dentist and they can be adjusted by the dentist. Moreover, the parts of the 18 dental prosthesis of the present invention can be supplied in completely sterile conditions. This assures reduction in infections connected with dental treatments. Due to the manufacturing process of the dental prosthesis, the artificial teeth are highly regarded as for their aesthetic appearance. The colors and shine of the artificial teeth are similar to natural teeth due to superior transfer of light It should be clear that the description of the embodiments and attached Figures set forth in this specification serves only for a better understanding of the invention, without limiting its scope.

It should also be clear that a person skilled in the art, after reading the present specification could make adjustments or amendments to the attached Figures and above described embodiments that would still be covered by the present invention.

Claims (13)

19 CLAIMS

1. A modular dental prosthesis adapted to be constructed on a dental implant, the implant having an inner hole provided with screw thread, wherein said modular dental prosthesis comprises: 5 an abutment comprises a screw adapted to be screwed in the inner hole of the implant, and a head adapted to support an artificial tooth; a fastening ring adapted to firmly fixate said screw in the implant's hole; and a temporary member comprises a base and a conical portion, wherein said base is adapted to be adhered onto said head of said abutment using a glueing material that is 10 configured to attach the temporary member to the abutment in a determined angle, wherein said temporary member is made from a meltable material that is capable of melting, wherein the temporary member is configured to be converted to a permanent member that resembles the same shape and size of the temporary member, wherein the artificial tooth is adapted to be mounted on the permanent member. 15

2. The modular dental prosthesis as claimed in Claim 1, wherein the conical portion of the temporary member is provided with a temporary protrusion that is used to hold the temporary member during an adjustment of the temporary member to the abutment in the determined angle. 20

3. The modular dental prosthesis as claimed in Claim 1, wherein said fastening ring is provided with an adaptor that corresponds in shape to a base of the implant, wherein the implant’s base is adapted to protrude beyond a jawbone and is adapted to receive the modular dental prosthesis.

4. The modular dental prosthesis as claimed in Claim 3, wherein said adaptor is a hexagonal 25 recess that is adapted to correspond in shape to a hexagonal connector provided in the implant's base.

5. The modular dental prosthesis as claimed in Claim 3, wherein said adaptor is a hexagonal connector that is adapted to correspond to a hexagonal recess in the implant's base.

6. The modular dental prosthesis as claimed in Claim 1, wherein a portion of said head of 30 said abutment corresponds to a rim provided in said fastening ring so that when the 20 abutment is fully screwed inside the implant, the fastening ring fixates the abutment to the implant so as to prevent any relative movements between them.

7. The modular dental prosthesis as claimed in Claim 1, wherein said glueing material comprises acrylic material. 5

8. The modular dental prosthesis as claimed in Claim 1, wherein said meltable material comprises a plastic material that can be converted by molding process to a metallic material, wherein the permanent member is made from the metallic material.

9. The modular dental prosthesis as claimed in Claim 1, wherein the head of said abutment has a square shape.

10. 10. The modular dental prosthesis as claimed in Claim 1, wherein said fastening ring has a square profile that is adapted to seat a corresponding square-shaped rim of the abutment.

11. A modular dental prosthesis adapted to be constructed on a dental implant, the implant having an inner hole provided with screw thread, wherein said modular dental prosthesis comprises: 15 an abutment comprises a screw adapted to be screwed in the inner hole of the implant, and a head adapted to support an artificial tooth; a seat, wherein a side of the seat that faces the artificial tooth comprises a crater that is adapted to receive a pestle-like member that is adapted to be partially confined in said crater, wherein the pestle-like member is adapted to support the artificial tooth, 20 wherein the crater enables to position the pestle-like member in any direction with respect to the implant prior to adhering the pestle-like member to the crater; a bore that is provided in the seat, in a side of the seat that faces of the implant, wherein the bore is adapted to receive said head so as to secure the head in the bore; and 25 the pestle-like member, wherein the pestle-like member is adapted to be adhered to the crater using a glueing material that is configured to attach the pestle-like member to the crater in a determined angle, wherein said pestle-like member is made from a meltable material that is capable of melting, wherein the pestle-like member is a temporary member that is configured to be converted to a permanent member 21 that resembles the same shape and size as the temporary member, wherein the artificial tooth is adapted to be mounted on the permanent member.

12. The modular dental prosthesis as claimed in Claim 11, wherein said head of the abutment 5 is provided with a rim and wherein the modular dental prosthesis further comprises a second screw that is adapted to be screwed through the seat to secure said head inside said bore.

13. The modular dental prosthesis as claimed in Claim 11, wherein said meltable material comprises a plastic material that can be converted by a molding process to a metallic 10 material, wherein the permanent member comprises the metallic material.