A DENTAL IMPLANT ASSEMBLY
20220160472 · 2022-05-26
Inventors
Cpc classification
A61C8/006
HUMAN NECESSITIES
International classification
Abstract
A dental implant assembly comprises, a base member which is rotatably insertable into a jaw-bone. The base member may be defined by a collar portion, a mid-portion and an apical region. The base member in entirety may be configured with a tapered configuration right from the mid-portion to the apical region. Further, the base member is defined with a plurality of threaded profiles on an outer surface. A first thread profile is defined on the collar portion. A second thread profile, defined on the mid-portion and a third thread profile, defined on the apical region. The third thread profile is configured to cut into the jaw-bone during insertion to anchor the base member. As the third thread profile cuts in to the jaw bone, the second thread profile forms a threaded hole within the drilled hole in order to securely anchor the base member within the jaw bone.
Claims
1. A dental implant assembly (100), the assembly (100) comprising: a base member (101) rotatably insertable into a jaw-bone, wherein the base member (101) is defined by a collar portion (CP), mid-portion (MP), and an apical region (AR), and wherein the base member (101) is defined with a plurality of threaded profiles (1, 2, 3) comprising: a first thread profile (1), defined on the collar portion (CP); a second thread profile (2), defined on the mid-portion (MP); a third thread profile (3), defined on the apical region (AR), wherein the third thread profile (3) is configured to cut into the jaw-bone to anchor the base member (101); wherein the apical region (AR) of the base member (101) is defined with one or more cut-outs (4) to allow integration of at least one tissue of the jaw-bone into the base member (101); and an abutment (107) receivable by the base member (101), wherein the abutment (107) is secured to the base member (101) through at least one fastener (106).
2. The dental implant assembly (100) as claimed in claim 1, wherein the base member (101) is defined with an internal cavity (20) to receive the at least one fastener (106) and the abutment (107).
3. The dental implant assembly (100) as claimed in claim 1, wherein the first thread profile (1) is a V-grooved thread profile.
4. The dental implant assembly (100) as claimed in claim 1, wherein first thread profile (1) includes a pitch ranging from 280 nm to 320 nm.
5. The dental implant assembly (100) as claimed in claim 1, wherein the second thread profile (2) is a buttress thread profile.
6. The dental implant assembly (100) as claimed in claim 1, wherein the second thread profile (2) includes a pitch ranging from 480 nm to 550 nm.
7. The dental implant assembly (100) as claimed in claim 1, wherein the third thread profile (3) is a macro thread profile.
8. The dental implant assembly (100) as claimed in claim 1, wherein the third thread profile (3) includes a pitch ranging from 0.9 mm-1.2 mm.
9. The dental implant assembly (100) as claimed in claim 1, wherein the abutment (107) is defined with at least one of straight profiled configuration, and an angular profiled configuration.
10. The dental implant assembly (100) as claimed in claim 1, wherein the base member (101) is defined with an internal cavity (IC) to receive the at least one fastener (106) and the abutment (107).
11. The dental implant assembly (100) as claimed in claim 10, wherein the internal cavity (IC) is further defined with a threaded hole (TH) to secure the at least one fastener (106).
12. The dental implant assembly (100) as claimed in claim 10, comprises a tapered profile ( ) to guide the abutment (107) into the internal cavity (IC).
13. The dental implant assembly (100) as claimed in claim 10, comprises a Female securing portion (FSP) defined in the internal cavity (IC) to secure the abutment (107) and prevent rotation of the abutment (107) within the base member.
14. The dental implant assembly (100) as claimed in claim 1, wherein shape of the female securing portion (FSP) corresponds to the shape the abutment (107).
15. The dental implant assembly (100) as claimed in claim 1, wherein the third thread profile (3) of the base member (101) facilitates in cutting into the jaw-bone, and the second thread profile (2) forms a threaded groove within the jaw bone for anchoring the base member (101).
16. The dental implant assembly (100) as claimed in claim 1, wherein the abutment (107a, 10b, 107c) is configured with a neck region (10) at a top end of the abutment (107a, 10b, 107c) for receiving a tooth crown.
17. The dental implant assembly (100) as claimed in claim 1, wherein the one or more cut-outs (4) is at least one of a straight oriented cut-out, and a helical oriented cut-out (4).
Description
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[0028] The novel features and characteristics of the disclosure are set forth in the appended claims. The disclosure itself, however, as well as a preferred mode of use, further objectives and advantages thereof, will best be understood by reference to the following description of an illustrative embodiment when read in conjunction with the accompanying drawings. One or more embodiments are now described, by way of example only, with reference to the accompanying drawings wherein like reference numerals represent like elements and in which:
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[0047] The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the assembly disclosed herein may be employed without departing from the principles of the disclosure described herein.
DETAILED DESCRIPTION
[0048] While the embodiments of the disclosure are subject to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the figures and will be described below. It should be understood, however, that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternative falling within the scope of the disclosure.
[0049] It is to be noted that a person skilled in the art would be motivated from the present disclosure and modify various features of the dental implant assembly, without departing from the scope of the disclosure. Therefore, such modifications are considered to be part of the disclosure. Accordingly, the drawings show only those specific details that are pertinent to understand the embodiments of the present disclosure, so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skilled in the art having benefit of the description herein. However, jaw bone of a patient is not illustrated in the drawings of the disclosure for the purpose of simplicity.
[0050] The terms “comprises”, “comprising”, “includes” or any other variations thereof used in the disclosure, are intended to cover a non-exclusive inclusion, such that an assembly that comprises a list of components does not include only those components but may include other components not expressly listed or inherent to such system, or assembly, or device. In other words, one or more elements in an assembly proceeded by “comprises . . . a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or device.
[0051] Embodiments of the present disclosure disclose an assembly for implanting a dental implant assembly. The dental implant assembly comprises a base member which is rotatably insertable into a jaw-bone. The base member may be defined by a collar portion, a mid-portion and an apical region. The base member in entirety may be configured with a tapered configuration right from the beginning of the mid-portion to the apical region. Further, the base member is defined with a plurality of threaded profiles on an outer surface. The plurality of threaded profiles comprises a first thread profile, defined on the collar portion. A second thread profile, defined on the mid-portion and a third thread profile, defined on the apical region. The third thread profile is configured to cut the jaw-bone during insertion to anchor the base member with primary stability. As the third thread profile cuts in to the jaw bone, the second thread profile forms a threaded hole within the drilled hole unidirectionally in order to securely anchor the base member within the jaw bone. As the base member is inserted into the jaw bone, the base member is allowed to cure for several weeks in order for osseointegration. The apical region of the base member is defined with one or more cut-outs to allow integration of at least one tissue of the jaw-bone into the base member. An abutment receivable by the base member, wherein the abutment is secured to the base member through at least one fastener.
[0052] The following paragraphs describe the present disclosure with reference to
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[0054] In an embodiment, the first thread profile (1) is defined on the collar portion (CP) of the base member (101), wherein the first thread profile (1) extends from a mouth region (MR) in a direction away from the mouth region (MR) and throughout the collar portion (CP) of the base member (101). The second thread profile (2) is defined on the mid-portion (MP) of the base member (101), wherein the second thread profile (2) extends in a direction away from an end of the collar portion (CP) and throughout the mid-portion (MP) of the base member (101). Lastly, the third thread profile (3) is defined on the apical region (AR) of the base member (101), wherein the third thread profile (3). Referring to
[0055] In an embodiment, the first thread profile (1) at the collar portion (CP) of the base member (101) is configured with V-groove shaped threads and is configured to sink into a cortical shell of the jaw-bone. However, the same shall not be considered as a limitation as, any other form of thread profile may be used which imparts the same result. In an embodiment, the second thread profile (2) defined on the mid-portion (MR) of the base member (101) is configured as a buttress shaped threads (2). However, the same shall not be considered as a limitation as, any other form of thread profile may be used which imparts the same result. In an embodiment, the third thread profile (3) defined on the apical region (AR) of the base member (101) is configured with macro threads (3) along the length of the apical region (AR) of the base member (101). However, the same shall not be considered as a limitation as, any other form of thread profile may be used which imparts the same result.
[0056] In an embodiment, the apical region (AR) of the base member (101) comprises one or more cut-outs (4) defined on the third thread profile (3). The one or more cut-outs (4) may be formed over one or more threads of the third thread profile (3). The one or more cut-outs (4) so formed on the apical region (AR) facilitates healing and integration of at least one tissue of the jaw-bone during onset of osseointegration after anchoring of the base member (101). The one or more cut-outs (4) during osseointegration is configured such that, the at least one tissue present in the jaw-bone area will be in close proximity to the cut-out (4) as a triggering site for osseointegration. In an embodiment, the one or more cut-outs (4) is defined with a void region or space in order to allow growth or integration of the at least one tissue during healing or osteointegration.
[0057] In an embodiment, once the base member (101) is anchored and secured to the jaw bone and after a brief period of osseointegration, an abutment (107) may be provided in the base member whilst securing the abutment (107) through the at least one fastener (106).
[0058] Referring now to
[0059] In an embodiment, the tapered profile (7) in the internal cavity (IC) of the base member (101) is configured with a polished surface in order to facilitate close tolerance fit with surface of the abutment (107).
[0060] In an embodiment, the base member (101) is configured to be implanted at a molar site (however the same is not limited to any site with variation of length and diameter) of the patient. The base member (101) has an overall length ranging from 8 mm to 14 mm Further, the diameter of the base member (101) at the collar portion (CP) ranges between 3 mm to about 6 mm
[0061] In an embodiment, the base member (101) at its tapered portion (conical shape) is configured with a taper angle ranging from 15° to 16°, wherein the end of the tapered portion is provided with a dome.
[0062] In an embodiment, wherein the first thread profile (1) has a pitch ranging between 280 nm to 320 nm, wherein the second thread profile (2) has a pitch ranging between 480 nm to 550 nm, wherein the third thread profile (3) has a pitch ranging between 0.9 mm-1.2 mm
[0063] In an embodiment, the V-grooved threads (1) defined on the collar portion (CP) of the base member (101) are configured with the pitch length in the range of about 0.25 mm to about 0.45 mm and the height in the range of about 0.1 mm to about 0.3 mm with an alignment angle of about 60°.
[0064] In an embodiment, the one or more cut-outs (4) defined at the apical region (AR) of the base member (101) may be designed as at least one of a straight oriented cut-out, and a helical oriented cut-out. The straight oriented cut-out (4) extends from a tip portion of the apical region (AR) along a predetermined length along the body portion of the base member (101).
[0065] In an embodiment, the plurality of buttress threads (2) defined on the mid-portion (MP) of the base member (101) are configured with a pitch length in the range of about 0.3 mm to about 0.6 mm and a height in the range of about 0.2 mm to about 0.4 mm with an alignment angle of about 45°.
[0066] In an embodiment, the plurality of macro threads (3) or the third thread profile (3) [also termed as plurality of macro threads (3)] defined on the apical region (AR) of the base member (101) may cover ⅓.sup.rd to ½.sup.th of the length from the apical region (AR). The plurality of the macro threads (3) is configured with a pitch length in the range of about 0.9 to 1.2 mm and a height in the range of 0.4-0.6 mm with a thread angle range of 40°-50°, wherein the thread angles and thread heights are maintained such a way that there would be an inter-thread gap.
[0067] In an embodiment, the base member (101) defined with the one or more cut-outs (4) is a right handed helical cut-out defined on the apical region (AR) of the base member (101). The depth of the one or more cut-outs (4) at the bottom end ranges between 0.4-0.6 mm from the outer surface which gradually decreases during climbing up and diminishes at the vertical length of around 3 mm from the apical region (AR) of the base member (101).
[0068] Referring to
[0069] In an embodiment as illustrated in
[0070] Referring to
[0071] Referring to
[0072] Referring to
[0073] In an embodiment, the straight profiled abutment (107a) secures within the base member (101) with the help of the at least one fastener (106), wherein the male securing portion (MSP) provided on the abutment (107) and the female securing portion (FSP) provided in the internal cavity (IC) of the base member (101) restricts rotational movement of the dental implant assembly (100).
[0074] Referring to
[0075] Referring to
[0076] Referring to
[0077] Referring to
[0078] Referring to
[0079] In an embodiment, the plurality of thread profiles (1, 2, 3) are machined using precision tools such as computer numerical control (CNC) machining and electrical discharge machining (EDM). The machining process used involved close tolerances and precise engineering in manufacturing the plurality of thread profiles (1, 2, 3). Once the manufacturing of the base member (101), the abutment (107) and the at least one fastener (106) is completed, sandblasting procedure was followed by two-stage acid-etching to achieve the surface roughness which is clinically accepted for best osseointegration.
[0080] Equivalents:
[0081] With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.
[0082] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system (108) having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances, where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system (108) having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.” While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.
TABLE-US-00001 REFERRAL NUMERALS REFERRAL NUMERALS DESCRIPTION IC Internal cavity CP Collar portion MP Mid-portion AR Apical region TH Threaded hole FSP Female Securing Portion 100 Dental implant assembly 101 Base member 106 Fastener 107 Abutment 107a Straight profiled abutment 107b First angular profiled abutment 107c Second angular profiled abutment 110 Cover screw 111 Healing abutment 1, 2, 3 Plurality of threads 1 First thread profileN-grooved threads 2 Second thread profile/ Buttress threads 3 Third thread profile/macro threads 4 One or more cut-outs 6 threaded cavity 7 Female tapered profile MSP male securing portion 9 Male tapered profile 10 Neck 11 Head portion of cover screw 12 Shank portion of cover screw 13 Threaded part of cover screw 14 Allen key groove of cover screw 11a Head portion of healing abutment 12a Shank portion of healing abutment 13a Threaded part of healing abutment 14a Allen key groove of healing abutment 15 head portion of locking screw 16 shank portion of locking screw 17 Threaded part of locking screw 18 Allen key groove of locking screw