CN106377329B - Personalized multi-tooth root molar implant - Google Patents
Personalized multi-tooth root molar implant Download PDFInfo
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- CN106377329B CN106377329B CN201611056831.6A CN201611056831A CN106377329B CN 106377329 B CN106377329 B CN 106377329B CN 201611056831 A CN201611056831 A CN 201611056831A CN 106377329 B CN106377329 B CN 106377329B
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- root
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
- A61C8/0027—Frames
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
- A61C8/0037—Details of the shape
- A61C8/0043—Details of the shape having more than one root
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
- A61C8/0078—Connecting the upper structure to the implant, e.g. bridging bars with platform switching, i.e. platform between implant and abutment
Abstract
A personalized multi-tooth root molar implant comprises an implant root and an abutment, wherein the implant root is connected with the abutment through a connecting piece, the implant root comprises a root neck and 2-3 sub-roots, and the sub-roots are consistent with the extracted molar tooth root or the formed tooth extraction socket in shape; the abutment is sequentially composed of an inner crown, an upper adhesive film penetrating part and a positioning section from top to bottom, the inner crown is similar to the crown of the natural molar in shape, and the outer edge of the inner crown is provided with a taper from top to bottom; the positioning section is in a hexagonal column shape, and circular arc-shaped bulges are respectively arranged at each corner; the upper end of the root neck of the root of the implant is provided with a positioning groove, the positioning groove and the positioning section have the same appearance and are closely inserted and connected through clearance fit, and a screw hole is formed in the center of the positioning groove; the connecting piece comprises connecting screw and lock nut, and connecting screw both ends all are equipped with the external screw thread. The implant is suitable for immediate implantation and repair, is simple to operate, and can relieve pain of patients to the greatest extent; good stress, firm connection, uneasy loosening and long service life.
Description
Technical Field
The invention relates to a dental implant, in particular to a personalized multi-root molar implant.
Background
The oral implant is also called as dental implant, and is implanted into the upper and lower jawbone of the edentulous part of human body by means of surgical operation, and after the operation wound is healed, the upper part of the oral implant is equipped with a device for repairing false tooth. The implant comprises a one-stage type and a two-stage type, the current clinical common use is a two-stage type single implant, the structure of which comprises a body part, an abutment and a connecting part, wherein the body part is a part for implanting the denture into human tissues; the abutment is the part of the dental implant exposed outside mucosa and provides supporting, fixing and stabilizing functions for the artificial denture; the connecting portion is a portion for connecting the body portion and the abutment, and a set screw is often used.
The body part of the current clinical implant has the following defects: (1) For premolars, especially maxillary molars with three teeth, the implant root used is not a biomimetic design. Because the molar can bear vertical, rotary and lateral forces in the chewing process, the root of the natural molar can well transmit forces in all directions and the forces are uniformly distributed; the root of a single implant cannot well transfer chewing force, stress concentration is easily caused, and accordingly bone absorption is caused. (2) The molar teeth have a longer crown size and the implant has a shorter body size, which is susceptible to lateral forces during chewing, resulting in bone resorption and fracture of the retention screw.
The implant abutment part has the following defects: (1) Due to the limitation of the body structure, the bionic design can not be carried out, so the size of the abutment is smaller, the dental crown is not matched with the abutment, the cantilever beam effect is easy to form in the chewing process, and the absorption of the alveolar bone is promoted; (2) Because the bonding area is small, the abutment is easy to cause the falling of the dental crown.
The invention patent with publication number CN102697568A discloses a multi-root implant of a simulated natural tooth root, which comprises an implant root implanted into an alveolar bone and an abutment part connected with a tooth crown, wherein the implant root comprises a root neck and a sub-root, the tooth root is designed into a standard model according to the tooth root of a normal tooth, the outer contour of the root neck and the outer contour of the sub-root are in a continuous and smooth curve, the sub-root is bent to be in a natural tooth root shape, and the sub-roots are parallel; the root neck completely covers the child root in a top view. The problems with such a multi-root implant are as follows:
1. as the son roots are bent to be natural tooth roots, but the son roots are parallel, the root necks completely cover the son roots in the overlooking direction, for the maxillary molars with forked roots, the design does not meet the requirement of simulating natural tooth roots, so that the implant cannot well transfer chewing force, and the stress distribution is not uniform. On the other hand, the plurality of implants are not individually designed, cannot be consistent with the root or socket shape of the extracted tooth, and are not suitable for immediate implantation and repair.
2. This many roots of tooth implant when planting uses earlier the planting tooth direction template that can confirm the implantation angle and the degree of depth of implant to lead, and rethread supersound osteotome prepares an planting hole with waiting to implant the implant looks adaptation on patient's alveolar bone, implants the planting downthehole with the implant at last. The secondary wound is caused to the patient when the implant is planted; and because the implant is many, the difficulty of the operation is increased, the wound is larger, the difficulty of the size matching of the hole and the implant during punching is increased, and the initial stability of the implant is influenced.
3. The base portion and the implant root portion are fixedly connected through a base screw, the base screw is clamped at a step of an inner hole of the base portion through a large-diameter end at the upper end of the base screw, the lower end of the base screw is in threaded connection with a screw hole of the implant root portion, the pretightening force of the base screw is small and easy to loosen, the chewing force cannot be conducted downwards, the base screw bears most of the chewing force, and the base screw is broken easily.
4. The base portion head end is circular truncated cone form, and the dental crown is installed at base portion head end or is installed with the mode of bonding through pre-buried dental crown screw, because the dental crown can bear great yawing force chewing in-process, therefore the easy atress of the dental crown of this kind of structure takes place to rotate after long-time the use to lead to the dental crown to drop.
Disclosure of Invention
The invention aims to solve the technical problem of providing a personalized multi-tooth root molar implant which can be manufactured according to the tooth root shape of a missing tooth, the implant is consistent with the tooth root or tooth extraction socket shape of an extracted tooth, is suitable for immediate implantation and repair, is simple to operate and can reduce the pain of a patient to the maximum extent; good stress, firm connection, uneasy loosening and long service life.
In order to solve the problems, the invention adopts the following technical scheme:
the utility model provides an individualized many roots of teeth grinds dental implant, includes implant root of implanting the jaw and the base station of being connected with the crown of a tooth, implant root and base station peg graft each other and pass through the connecting piece to be connected, and its special character is: the root of the implant comprises a root neck and 2-3 sub-roots, and the shape of the sub-roots is consistent with that of the extracted molar tooth root or the formed extraction socket;
the abutment is sequentially composed of an inner crown, an upper adhesive film penetrating part and a positioning section from top to bottom, the inner crown is similar to the shape of a dental crown of a natural molar, and the outer edge of the inner crown is provided with a taper from top to bottom for sleeving the dental crown; the positioning section is hexagonal and is provided with circular arc bulges at each edge angle respectively so as to enhance the torsion resistance of the abutment;
the upper end of the root neck of the root of the implant is provided with a positioning groove, the positioning groove and the positioning section have the same appearance and are closely inserted and connected through clearance fit, and a screw hole is formed in the center of the positioning groove;
the connecting piece is composed of a connecting screw rod and a locking nut, external threads are arranged at two ends of the connecting screw rod, a stepped through hole is formed in the base platform, and the lower end of the connecting screw rod penetrates through the through hole and then is in threaded connection with the screw hole; the locking nut is positioned in the large hole at the upper end of the through hole and is fastened at the upper end of the connecting screw rod through threads.
Further preferably, a lower transmucosal portion symmetrical to the upper transmucosal portion of the base is provided on the outer edge of the upper end of the root collar.
Preferably, the superior and inferior transmucosal portions are approximate to a tooth root contour.
Preferably, the locking nut is in a hollow cylindrical shape, the lower portion of the inner hole of the locking nut is a screw hole, and the upper portion of the inner hole is in a hexagonal shape, so that locking is facilitated.
More preferably, the central angle of the circular arc protrusion is 240 degrees.
The beneficial effects of the invention are:
1. because the root of the implant comprises a root neck and a sub-root, the number of the sub-roots is 2-3, and the sub-roots are consistent with the shape of the extracted molar tooth root or the formed extraction socket, so that the root of the implant is tightly attached to the extraction socket, thereby providing good initial stability and being capable of better conducting force transmission, especially for three teeth; the minimally invasive dental extraction device has the advantages that the implantation holes do not need to be prepared step by step, the minimally invasive dental extraction device can be implanted and repaired immediately after minimally invasive dental extraction, the operation is simple, the cost can be reduced, the pain of a patient is relieved to the greatest extent, and the comfort of the patient is improved.
2. Because the crown appearance of interior crown and natural molar is similar, consequently the cover establish behind the crown the appearance alright prevent the rotation of crown through interior crown, need not to set up anti-torsion structure alright prevent falling of crown again, such design can make the crown thickness of establishing of cover even moreover, more does benefit to the conduction of power at the in-process of chewing to avoid appearing the crown and collapsing porcelain phenomenon because stress concentration.
3. Because the positioning section is hexagonal prism shape and is provided with the arc-shaped protrusion at each edge, the positioning groove is the same as the positioning section in shape and is mutually and closely inserted and connected through clearance fit, the anti-torsion strength of the abutment can be greatly enhanced, the abutment is prevented from generating relative rotation on the root of the implant after being stressed, and the retention screw is prevented from loosening, so that the stress of the dental crown can be better transmitted to the root of the implant through the abutment.
4. Because the connecting piece comprises connecting screw and lock nut that both ends all were equipped with the external screw thread, the connecting screw lower extreme with screw threaded connection, lock nut is located the macropore of through-hole upper end and passes through the screw fastening in the connecting screw upper end, makes connecting screw both ends pretension simultaneously, can effectively increase the pretightning force, makes base station and the root of the planting body be connected more firmly, and difficult not hard up long service life.
5. Because the implantation position of the personalized multi-root molar implant is completely matched with the position of the original natural tooth, the accurate position relation between the implant and the adjacent tooth and the position of the original natural tooth are ensured, and the establishment of the normal occlusion relation is facilitated, so that the conduction of the chewing force is facilitated, and the bone absorption and the symptoms of temporomandibular joint are prevented.
6. The positioning of the abutment and the dental crown of the personalized multi-root molar implant is finished by computer aided design, the positioning is accurate, and a good contact relation can be established between the abutment and the opposite molar. The later processes of taking an impression, trimming the abutment and manufacturing the dental crown are omitted. After the healing abutment is removed, the abutment and the dental crown can be directly installed. The operation steps are simplified, the clinical operation time is saved, the cost is reduced, and convenience is brought to patients.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a structural sectional view of the present invention.
Fig. 3 is a perspective view of the base of the present invention.
In the figure: implant root 1, son root 2, root neck 3, lower adhesive film part 31, positioning groove 32, connecting screw 4, lock nut 5, dental crown 6, base station 7, through-hole 71, inner crown 8, upper adhesive film part 9, positioning section 10, circular arc protrusion 11.
Detailed Description
As shown in fig. 1 to 3, the personalized multi-root molar implant according to the present invention includes an implant root 1 implanted into a jaw bone and an abutment 7 connected to a crown 6, wherein the implant root 1 and the abutment 7 are inserted into each other and connected by a connecting member. The implant root 1 comprises a root neck 3 and sub-roots 2, the sub-roots 2 are 2-3 and are consistent with the extracted molar roots or the formed tooth extraction pits in shape, so that the implant does not need to prepare an implantation hole step by step during implantation, and can be implanted and repaired immediately after minimally invasive tooth extraction, thereby providing good initial stability and better force transmission. This embodiment takes 3 sub-roots 2 as an example.
The abutment 7 is sequentially composed of an inner crown 8, an upper adhesive film penetrating part 9 and a positioning section 10 from top to bottom, the inner crown 8 is similar to the shape of the dental crown 6 of the natural molar, the center of the top surface of the inner crown 8 is concave, and the outer edge of the inner crown is provided with a taper from top to bottom for sleeving and bonding the dental crown 6; the cover is established behind the dental crown 6 through the appearance alright prevent the rotation of dental crown 6 of interior crown 8, need not to set up again anti-torsion structure alright prevent the drop of dental crown 6, and such design can make the 6 thickness of dental crown that the cover was established even moreover, more does benefit to the conduction of power at the chew in-process to avoid appearing dental crown 6 because stress concentration and collapsing porcelain phenomenon. The upper mucous membrane penetrating part 9 is similar to the outline of the tooth root, and the outer edge is an inclined surface which is gradually inclined inwards from top to bottom. The positioning section 10 is hexagonal and provided with circular arc-shaped bulges 11 at each edge angle to enhance the torsional strength of the base station 7; the central angle corresponding to the circular arc-shaped protrusion 11 is 240 degrees.
Be equipped with positioning groove 32 in the root neck 3 upper end of implant root 1, positioning groove 32 with the profile of location section 10 is the same and closely pegs graft through clearance fit each other, can strengthen the antitorque commentaries on classics intensity of base station 7 like this greatly, avoids base station 7 atress back to produce relative rotation on implant root 1, makes 6 atresss of dental crown can conduct to implant root 1 better through base station 7. A screw hole is arranged at the center in the positioning groove 32, a lower adhesive film penetrating part 31 which is symmetrical with the upper adhesive film penetrating part 9 of the abutment is arranged at the outer edge of the upper end of the root neck 3, and the lower adhesive film penetrating part 31 is also similar to the outline of the tooth root.
The connecting piece comprises a connecting screw rod 4 and a locking nut 5, external threads are arranged at two ends of the connecting screw rod 4, a stepped through hole 71 is formed in the base platform 7, and the lower end of the connecting screw rod 4 penetrates through the through hole 71 and then is in threaded connection with the screw hole. The locking nut 5 is in a hollow cylindrical shape, the lower part of the inner hole of the locking nut is a screw hole, the upper part of the inner hole is in a hexagonal shape, and the locking nut 5 is positioned in a large hole at the upper end of the through hole and is fastened at the upper end of the connecting screw rod 4 through threads; make 4 both ends of connecting screw pretension simultaneously, can effectively increase the pretightning force, make the base station be connected more firmly with planting body root 1, difficult not hard up long service life.
The personalized multi-tooth-root molar implant is designed for immediate implantation, an implantation hole does not need to be prepared step by step, a patient can be implanted into the root 1 of the implant immediately after minimally invasive tooth extraction, the root 1 of the implant is tightly attached to an extraction socket, good initial stability can be obtained, a healing base station is connected to the upper end of the root 1 of the implant, the healing base station can be detached and inserted into the base station until the root 1 of the implant is boney combined with bone tissues, and then the base station is fixed on the root 1 of the implant through a connecting screw rod 4 and a locking nut 5; finally, the inner crown 8 of the abutment is sleeved with a dental crown and is fixed by a bonding agent. Because the implantation operation is immediate implantation and the whole implant and the upper dental crown are completed by computer aided design, the whole operation and repair process is simple to operate and low in cost, and can relieve the pain of a patient to the maximum extent and bring convenience to the patient.
While embodiments of the invention have been described above, it is not intended to be limited to the details shown, described and illustrated herein, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed, and to such extent that such modifications are readily available to those skilled in the art, and it is not intended to be limited to the details shown and described herein without departing from the general concept as defined by the appended claims and their equivalents.
Claims (4)
1. The utility model provides an individualized many roots of teeth grinds dental implant, includes implant root of implanting the jaw and the base station of being connected with the crown of a tooth, implant root and base station peg graft each other and pass through the connecting piece and be connected characterized by: the root of the implant comprises a root neck and 2-3 sub-roots, and the shape of the sub-roots is consistent with that of the extracted molar tooth root or the formed extraction socket;
the abutment is sequentially composed of an inner crown, an upper adhesive film penetrating part and a positioning section from top to bottom, the inner crown is similar to the shape of a dental crown of a natural molar, and the outer edge of the inner crown is provided with a taper from top to bottom for sleeving the dental crown; the positioning section is hexagonal and provided with arc-shaped bulges at each edge angle respectively, and the arc-shaped bulges are used for enhancing the torsion resistance of the abutment;
the upper end of the root neck of the root of the implant is provided with a positioning groove, the positioning groove and the positioning section have the same appearance and are closely inserted and connected through clearance fit, and a screw hole is formed in the center of the positioning groove;
the connecting piece is composed of a connecting screw rod and a locking nut, external threads are arranged at two ends of the connecting screw rod, a stepped through hole is formed in the base platform, and the lower end of the connecting screw rod penetrates through the through hole and then is in threaded connection with the screw hole; the locking nut is positioned in the large hole at the upper end of the through hole and is fastened at the upper end of the connecting screw rod through threads;
the outer edge of the upper end of the root neck is provided with a lower mucous membrane penetrating part which is symmetrical to the upper mucous membrane penetrating part of the base platform, and the upper mucous membrane penetrating part and the lower mucous membrane penetrating part form a positioning groove with an approximate V-shaped section.
2. The personalized multi-root molar implant of claim 1, wherein: the upper penetrating mucous membrane part and the lower penetrating mucous membrane part are similar to the outline of the tooth root.
3. The personalized multi-root molar implant of claim 1, wherein: the locking nut is in a hollow cylindrical shape, the lower portion of an inner hole of the locking nut is a screw hole, and the upper portion of the inner hole is in a hexagonal shape, so that locking is facilitated.
4. The personalized multi-root molar implant of claim 1, wherein: the central angle corresponding to the circular arc-shaped bulge is 240 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611056831.6A CN106377329B (en) | 2016-11-25 | 2016-11-25 | Personalized multi-tooth root molar implant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611056831.6A CN106377329B (en) | 2016-11-25 | 2016-11-25 | Personalized multi-tooth root molar implant |
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| CN106377329A CN106377329A (en) | 2017-02-08 |
| CN106377329B true CN106377329B (en) | 2022-12-30 |
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| CN201611056831.6A Active CN106377329B (en) | 2016-11-25 | 2016-11-25 | Personalized multi-tooth root molar implant |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107468360A (en) * | 2017-09-25 | 2017-12-15 | 南方医科大学 | A kind of more root of the tooth planting bodies with porous layer |
| CN107485460A (en) * | 2017-09-25 | 2017-12-19 | 南方医科大学 | A kind of 3D printing method of the more root of the tooth planting bodies of personalized porous layer |
| CN109009507B (en) * | 2018-08-07 | 2023-08-08 | 佛山科学技术学院 | Zirconia base station |
| KR102281014B1 (en) * | 2020-10-21 | 2021-07-23 | 박태석 | Decomposition jig of implant and implant structure |
| CN113786256B (en) * | 2021-11-17 | 2022-02-08 | 极限人工智能有限公司 | Implant safety zone generation method and device, electronic equipment and storage medium |
| CN114732545B (en) * | 2022-05-11 | 2024-03-19 | 邵大进 | Artificial dental crown, implant and ceramic dental implant assembly |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1608284A4 (en) * | 2003-03-13 | 2007-05-02 | Young Ku Heo | Method for treating a screw-cement retained prosthesis, abutment and implant for a screw-cement retained prosthesis |
| KR100795645B1 (en) * | 2007-08-17 | 2008-01-17 | 김정한 | Method for manufacturing the one body abutment of implant |
| EP2618773A1 (en) * | 2010-09-24 | 2013-07-31 | Zimmer Dental Inc. | Dental implant and abutment system |
| US20130323677A1 (en) * | 2012-06-01 | 2013-12-05 | Thomas Stewart Pearson | Individualized endosseous dental implant |
| KR101554392B1 (en) * | 2013-11-06 | 2015-09-18 | 경북대학교 산학협력단 | Dental Implant |
| KR101630669B1 (en) * | 2015-05-19 | 2016-06-15 | 김용협 | Bond structure in the abutment and implant crown |
| CN106137421B (en) * | 2016-07-31 | 2021-06-08 | 南京浦翮医疗技术有限公司 | Tooth implant with enlarged joint surface of tooth root and alveolar bone and implant |
| CN206526124U (en) * | 2016-11-25 | 2017-09-29 | 赵冰净 | Personalized many roots of the tooth are ground one's teeth in sleep planting body |
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Effective date of registration: 20221124 Address after: 523710 No. 113 Jiaoping Avenue, Tangxia Town, Dongguan City, Guangdong Province Applicant after: Dongguan southeast Central Hospital Address before: No. 5-43, Section 3, Yan'an Road, Guta District, Jinzhou City, Liaoning Province, 121000 Applicant before: Zhao Bingjing |
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