CN112826618B - Bent cheekbone-passing implant structure - Google Patents
Bent cheekbone-passing implant structure Download PDFInfo
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- CN112826618B CN112826618B CN202011636192.7A CN202011636192A CN112826618B CN 112826618 B CN112826618 B CN 112826618B CN 202011636192 A CN202011636192 A CN 202011636192A CN 112826618 B CN112826618 B CN 112826618B
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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
- A61C8/0022—Self-screwing
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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
- A61C8/0034—Long implant, e.g. zygomatic implant
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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
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Abstract
本发明提供了一种弯曲型穿颧种植体结构，所述种植体结构由头部（1）、体部（2）、根部（3）以及角度基台（4）组成，头部（1）为圆柱体设计，上端设置正六边形沉孔（11）承接角度基台（4）及修复体；体部（2）由第一直线段（21）、第二直线段（23）和弧度段（22）所组成，植入后弧度段（22）能与凹陷的上颌窦前外侧壁（5）相贴合或部分嵌入上颌窦前外侧壁（5）内；根部（3）植于颧骨内、提供坚强的固位力、确保穿颧种植体具有良好稳定性。本发明提供的种植体结构更贴近凹陷的上颌窦前外侧壁（5），使体部（2）远离上颌窦前外侧壁（5）外面的软组织，避免对软组织产生挤压力，降低体部外露口腔的发生率。
The invention provides a curved transzygomatic implant structure, the implant structure is composed of a head (1), a body (2), a root (3) and an angle abutment (4), the head (1) It is designed as a cylinder, and the upper end is provided with a regular hexagonal counterbore (11) to receive the angle abutment (4) and the restoration body; (22), the curved segment (22) after implantation can fit with the concave anterolateral wall (5) of the maxillary sinus or be partially embedded in the anterolateral wall (5) of the maxillary sinus; the root (3) is implanted in the zygomatic bone Provide strong retention force and ensure good stability of transzygomatic implants. The implant structure provided by the present invention is closer to the concave anterolateral wall (5) of the maxillary sinus, so that the body (2) is far away from the soft tissue outside the anterolateral wall (5) of the maxillary sinus, avoids squeezing force on the soft tissue, and reduces the body part The incidence of exposed mouth.
Description
Technical Field
The invention relates to the technical field of artificial dental implants for oral, maxillofacial and facial regions, in particular to a bent cheekbone-penetrating implant structure.
Background
The maxillary bone quantity is seriously insufficient due to the reasons of maxillary long-term tooth loss, benign and malignant tumor excision, congenital diseases, trauma and the like, and the patients are usually required to be subjected to bone grafting operation before dental implant treatment, and the method comprises the following steps: vascularized osseous flap repair, free block bone transplantation, maxillary sinus floor external lifting bone grafting and the like. However, the bone grafting method belongs to complex treatment, has large surgical trauma and high technical requirements, and is easy to cause complications and cause treatment failure and the like. Therefore, dental implant treatment with severely insufficient maxillary bone mass is one of the most difficult implant treatments at present.
In order to avoid complicated bone grafting operation, reduce operation difficulty and increase patient acceptance, the Br å nemark professor of Goldburg university in Swedenberg has invented a cheekbone-penetrating implant for the repair of implanted dentures with severely insufficient bone mass (maxillary bone). The zygomatic implant is accessed from the maxillary alveolar ridge, passed through the maxillary sinus and re-accessed to the zygomatic bone for dual bone retention. As an implant bone bed of the implant, the zygomatic bone has two advantages: the cheekbones are positioned at the two sides of the middle part of the face and above the outside of the maxilla, and the cheekbones have large bone mass, so that the condition of sufficient bone mass can be provided for the implant implantation; histological analysis shows that the zygomatic zone is a regular bone trabecula, the bone is compact, and the implant can obtain ideal initial stability. Currently, the cheekbone implants used clinically have two features: all are linear type plants; ultra-long implant (30-52.5 mm).
The traditional cheekbone implant is divided into 3 parts: the head is positioned at the gum level and receives the repair base, the root is a part penetrating into cheekbones and is a key part for providing fixing force for the cheekbones implant, and the body is a part positioned between the head and the root and can be positioned in the front outer side wall of the maxillary sinus or positioned outside the front outer side wall of the maxillary sinus (surrounded by soft tissues) along with the change of the form of the front outer side wall of the maxillary sinus. The form of lateral wall can be divided into 4 types before the maxillary sinus: flat, slightly concave, markedly concave and severely collapsed. When the front outer side wall of the maxillary sinus is flat, the body part of the cheekbone implant is positioned in the maxillary sinus, namely, the maxillary sinus is windowed and the mucous membrane is peeled off during the operation, and the body part is positioned under the mucous membrane in the maxillary sinus; when the front outer side wall of the maxillary sinus is slightly sunken, the body part of the zygomatic implant is positioned in the bone wall of the maxillary sinus or partially positioned in the maxillary sinus, and the maxillary sinus is windowed to peel off the mucous membrane during the operation; when the front outer side wall of the maxillary sinus is obviously sunken or the maxillary bone is vertical and horizontal to severe atrophy, the body part of the cheekbone implant is positioned outside the maxillary sinus bone wall, namely, the body part can not be attached to the front outer side wall of the maxillary sinus which is obviously sunken and is wrapped by mucous membrane soft tissue, and the body part can apply extrusion force with a certain size to the soft tissue. When a patient performs the functions of speaking, chewing and the like, the soft tissue outside the body part moves along with the functional movement, and because the body part of the implant does not have any mobility, the relative motion can occur between the soft tissue and the body part, and in addition, the existence of the extrusion force of the cheekbone-penetrating implant body part on the soft tissue often causes erosion and perforation of mucous membranes outside the body part and soft tissues under the mucous membranes, so that the body part is exposed in the oral cavity; especially when the patient has a thin submucosal tissue, the body is more likely to be exposed. The surfaces of the implants exposed in the oral cavity are carriers for plaque accumulation and local soft tissue inflammatory reaction, so that the patient's rate of return visit is increased, and the satisfaction is reduced. In order to reduce the exposure rate, the scholars adopt a method of cheek pad flap transfer when implanting the cheekbone implant to increase the tissue quantity of the body of the exposed implant, and hopefully achieve the purpose of reducing the body exposed oral cavity, but the clinic has proved that the method is basically ineffective due to the reason that the tissue quantity of the cheek pad is very limited, and the like.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a curved cheekbone-penetrating implant structure, which is characterized in that the body is curved so as to be closer to the front and outer side walls of the maxillary sinus or partially embedded into the front and outer side walls of the maxillary sinus, so that the body is away from the buccal soft tissue layer of the oral cavity, thereby reducing the incidence of exposed oral cavity. The structure is mainly used for patients with obvious concave front lateral wall of maxillary sinus or serious vertical and horizontal absorption of maxillary bone.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a bent type cheekbone planting body structure which characterized in that: the implant structure consists of a head part, a body part, a root part and an angle base station; the head part is of a cylindrical structure, a regular hexagon counter bore is formed in the upper end of the head part, the regular hexagon counter bore is used for bearing the angle base station and the restoration, the regular hexagon counter bore is connected with the angle base station through an inner hexagon, and the head part and the angle base station are fixed through a first-stage screw; the body part consists of a straight line section and a radian section, the straight line section is divided into two sections, namely a first straight line section and a second straight line section, the radian section is a main body part, one end of the radian section is connected with the head part through the first straight line section, the other end of the radian section is connected with the root part through the second straight line section, and the radian section is in a bending shape with variable curvature and can be attached to the front outer side walls of maxillary sinuses with different concavities; the root is round platform column structure, the diameter that is close to the second straightway is greater than the diameter of keeping away from the second straightway, just the end of root is glossy arc structure, the root surface evenly sets up the helicitic texture, head, somatic part all do not contain helicitic texture.
The head and the body do not contain the smooth design of the threaded structure, which is beneficial to the health of gum and cheek soft tissue, the root thread design and the rough surface increase the combination area of the implant and the bone tissue, effectively disperse the occlusion stress, and the rough surface is beneficial to the healing speed of the interface bone tissue and increase the bone combination rate of the implant and the bone interface. The main body part of the body part is designed in a curved radian rather than a linear type, and the curved surface can be close to or partially embedded into the front outer side wall of the maxillary sinus, so that extrusion force on cheek soft tissues can be avoided, the occurrence of perforation and cracking of mucous membranes can be reduced, the body part is prevented from being exposed out of the oral cavity, and meanwhile, the curved radian can also play a certain role in retention and limiting; the root part is connected with the body part and is a part implanted into the cheekbone, so that the fixing force is provided for the cheekbone implant, and the long-term stability of the cheekbone implant after the upper denture is repaired is ensured.
According to further optimization, the angle abutment comprises a regular hexagon connecting part, a gum penetrating part and a retention table; the regular hexagon connecting part is matched with the regular hexagon counter bore and is connected with the regular hexagon counter bore in an inner hexagon manner, one end of a restoration body of the regular hexagon connecting part is a gingival penetrating part of the abutment, and the regular hexagon connecting part and the central axis of the gingival penetrating part of the abutment are on the same plane and are intersected; the gum penetrating part is of a round table structure, and the diameter of one end, close to the regular hexagon connecting part, of the gum penetrating part is smaller than that of one end, far away from the regular hexagon connecting part, of the gum penetrating part; the retention table is positioned at one end of the gum penetrating part far away from the regular hexagon connecting part, the central axis of the retention table is collinear with the axis of the gum penetrating part, a second-stage threaded hole is arranged in the middle of the retention table, a second-stage screw is installed in the retention table to fixedly install the upper prosthesis, a first-stage threaded hole is arranged on the regular hexagon connecting part and the head, and a first-stage screw is installed in the regular hexagon connecting part to fixedly connect the angle abutment and the cheekbone implant structure into a whole.
Further optimization is carried out, the central axis of the first-stage threaded hole is collinear with the central axis of the regular hexagon connecting part, and the central axis of the second-stage threaded hole is collinear with the central axis of the retention table.
Preferably, the retention table, the gum penetrating portion and the regular hexagon connecting portion are of an integrated structure (i.e. the angle abutment is an integrated piece).
And further optimizing, wherein the central axis of the head part, the central axes of the two straight line sections of the body part and the central axis of the root part are on the same straight line, and the central axes of the two straight line sections of the body part and the central axis of the bent section of the body part are intersected and smoothly connected.
For further optimization, the height of the head is 4.0mm, and the diameter of the head is 4.3mm; the distance between the opposite sides of the regular hexagon counter bore is 2.5mm, and the depth of the regular hexagon counter bore is 2.5mm.
Further optimizing, the height of the regular hexagon connecting part is 2.5mm; the height of the gum penetrating part (namely the vertical height from the top surface of the regular hexagonal connecting part to the edge point of the top surface of the gum penetrating part) is 2-3 mm; the height of the retention platform (namely the vertical height from the top surface of the gum penetrating part to the top surface of the retention platform) is 2-3 mm.
Further preferably, the axis of the gum penetrating part is collinear with the central axis of the retention table, and the angles formed by the axis of the gum penetrating part and the central axis of the regular hexagonal connecting part are as follows: any one of five angles of 0 degrees, 15 degrees, 25 degrees, 35 degrees and 45 degrees, and the different angle design is convenient for the upper prosthesis to obtain an ideal positioning direction.
Further optimizing, the length of the first straight line is 3.0-5.0 mm, and the diameter is 4.1mm; the length of the second straight-line segment is 0.5-1.5 mm, and the diameter of the second straight-line segment is 4.1mm; radian section diameter with first straight line section diameter is the same, and radian section height (the distance of the skew linear type somatic part of radian section most salient point promptly) is 1.0mm or 2.0mm or 3.0mm or 4.0mm or any one group in 5.0mm, carries out the adjustment of radian section height, guarantees the laminating degree of radian section and the preceding lateral wall of maxillary sinus according to the sunken degree of lateral wall before the maxillary sinus, and the radian section length is 12 ~ 22mm.
Further optimization is carried out, the root part is 15-20 mm in length, the maximum diameter (namely the diameter close to one end of the second straight line part) of the root part is 4.1mm, the minimum diameter (namely the tail end of the root part) of the root part is 3.6mm, and the design of the gradually reduced root part can increase the initial stability of the implant implantation and is beneficial to smooth osseointegration of the implant.
Further optimization is carried out, the thread pitch of the thread structure is 0.7-1.2 mm, the sections of the threads are all triangular, and the tooth depth is 0.5mm.
Further optimizing, the surface of the root part is treated by any one of acid etching sand blasting, anodic oxidation or laser roughening; the surfaces of the head and body are treated with a mechanically polished surface treatment.
In a further optimization, the head part, the body part and the root part are integrally formed, the angle abutment is fastened to a first straight line segment of the head part and the body part of the implant through a first-stage screw, the upper prosthesis is a personalized prosthesis suitable for the condition in the oral cavity of a patient, and the upper prosthesis is fastened to a retention table of the angle abutment through a second-stage screw.
The invention has the following technical effects:
the design of the bending body part has the advantages of reducing the exposed oral cavity of the cheekbone implant body part; meanwhile, since the curved body part of the present invention is attached to or partially embedded into the anterior and lateral walls of the maxillary sinus, the curved body part is attached to or embedded into the anterior and lateral walls of the maxillary sinus to increase the bonding area of the implant with the bone tissue, which can improve the stability of the zygomatic implant, is a new enhancement in retention in addition to providing retention at the root of the zygomatic implant, and is advantageous for the long-term stability of the zygomatic implant, compared to the conventional linear zygomatic implant. The regular hexagon counter bore is matched with the angle abutment, so that the upper prosthesis can obtain an ideal positioning direction, and the position of the prosthesis can be adjusted and fixed more conveniently. After the zygomatic implant is implanted, the head is positioned at the level of the gum, and the root is positioned in the zygomatic bone, so that strong retention force can be provided, and the zygomatic implant is ensured to have good stability under the stress condition.
Drawings
Fig. 1 is a schematic structural view of a zygomatic implant in an embodiment of the invention.
Fig. 2 is a schematic structural diagram of an angle base according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view of an angled base in an embodiment of the present invention.
Fig. 4 is a structural view illustrating the relationship between the conventional linear type zygomatic implant and the anterior and lateral walls of the maxillary sinus which is significantly depressed.
Fig. 5 is a structural view illustrating the relationship between the zygomatic implant of the present invention and the anterior and lateral walls of the maxillary sinus which is significantly depressed.
Wherein, 1, head; 11. a regular hexagon counter bore; 2. a body portion; 21. a first straight line segment; 22. a radian section; 23. a second straight line segment; 3. a root portion; 4. an angle base station; 41. a regular hexagonal connection portion; 411. a first-stage threaded hole; 42. penetrating the gum part; 43. a retention stage; 431. a second-stage threaded hole; 5. the anterior lateral wall of the maxillary sinus.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example (b):
as shown in fig. 1 to 5, a bending type cheekbone implant structure is characterized in that: the implant structure consists of a head part 1, a body part 2, a root part 3 and an angle base station 4; the head 1 is of a cylindrical structure, a regular hexagon counter bore 11 is formed in the upper end of the head 1, the regular hexagon counter bore 11 is used for bearing the angle base station 4 and the restoration, the outer surfaces of the regular hexagon counter bore 11 and the angle base station 4 are connected through an inner hexagon, and the head 1 and the angle base station 11 are fixed through a first-stage screw; the body part 2 consists of a straight line section and a radian section 22, the straight line section is two sections, namely a first straight line section 21 and a second straight line section 23, the radian section 22 is a main body part, one end of the radian section 22 is connected with the head part 1 through the first straight line section 21, the other end of the radian section 22 is connected with the root part 3 through the second straight line section 23, and the radian section 22 is in a bending form with variable curvature and can be attached to the front outer side wall 5 of the maxillary sinus with different concavities; root 3 is round platform column structure, is close to the diameter of second straightway 23 and is greater than the diameter of keeping away from second straightway 23, and the end of root 3 is glossy arc structure, and 3 surfaces of root evenly set up helicitic texture, and head 1, somatic part 2 do not all contain helicitic texture. The central axes of the two straight line segments of the head part 1 and the body part 2 are on the same straight line with the central axis of the root part 3, and the central axes of the head part 1 and the root part 3 are intersected and smoothly connected with the central axis of the body part 2.
The angle abutment 4 comprises a regular hexagon connecting part 41, a gum penetrating part 42 and a retention table 43, and the angle abutment 4 is of an integrated structure; the regular hexagon connecting part 41 is positioned in the regular hexagon counter bore 11 and is connected with the inner hexagon of the regular hexagon counter bore 11, the coronal part of the regular hexagon connecting part 41 is a gum penetrating part 42, and the central axes of the regular hexagon connecting part 41 and the gum penetrating part 42 are on the same plane and are intersected; the gum penetrating part 42 is in a round table structure, and the diameter of one end of the gum penetrating part close to the regular hexagon connecting part 41 is smaller than that of one end of the gum penetrating part far away from the regular hexagon connecting part 41; the retention platform 43 is positioned at one end of the gum penetrating part 42 far away from the regular hexagon connecting part 41, a second-stage threaded hole 431 is arranged in the middle of the retention platform 43, a second-stage screw is arranged in the second-stage threaded hole to fixedly install the prosthesis, the regular hexagon connecting part 41 and the head 1 are provided with a first-stage threaded hole 411, and a first-stage screw is arranged in the first-stage threaded hole to fixedly connect the angle abutment and the implant structure. The central axis of the first-stage threaded hole 411 is collinear with the central axis of the regular hexagon connecting part 41, the central axis of the second-stage threaded hole 431 is collinear with the central axis of the retention table 43, and the central axis of the retention table 43 is collinear with the central axis of the gum penetrating part 42.
The height of the head 1 is 4.0mm, and the diameter is 4.3mm; the distance between the opposite sides of the regular hexagon counter bore 11 is 2.5mm, and the depth of the regular hexagon counter bore 11 is 2.5mm; the height of the regular hexagonal connecting part 41 is 2.5mm; the height of the gum penetrating part 42 (namely the vertical height from the top surface of the regular hexagonal connecting part to the edge point of the top surface of the gum penetrating part) is 2.0-3.0 mm; the height of the retention stage 43 (i.e., the vertical height from the top surface of the transgingival part 42 to the top surface of the retention stage 43) is 2.0 to 3.0 mm. The length of the first straight line section 21 is 3.0-5.0 mm, and the diameter is 4.1mm; the length of the second straight line section 23 is 0.5-1.5 mm, and the diameter is 4.1mm; the diameter of the arc section 22 is the same as that of the first straight line section 21 and is 4.1mm, the height of the arc section 22 (namely, the distance between the most protruded point of the arc section 22 and the linear body part) is any one of 1.0mm, 2.0mm, 3.0mm, 4.0mm and 5.0mm (as shown in figure 1, H is any one of 1.0mm, 2.0mm, 3.0mm, 4.0mm and 5.0 mm), the height of the arc section 22 is adjusted according to the sunken degree of the front outer side wall 5 of the maxillary sinus, the fit degree of the arc section 22 and the front outer side wall 5 of the maxillary sinus is ensured, and the length of the arc section 22 is 12-22 mm. The root portion 3 has a length of 15 to 20mm, a maximum diameter (i.e., a diameter near one end of the second straight line portion 23) of 4.1mm and a minimum diameter (end diameter) of 3.6mm, and the gradually reduced root portion design can increase the initial stability of the implant implantation and facilitate smooth osseointegration of the implant. The thread pitch of the thread structure is 0.7-1.2 mm, the thread section is triangular, and the tooth depth is 0.5mm. The central axis of the retention table 43 and the central axis of the gum penetrating portion 42 are completely coincided and are in the same straight line, the intersection angle between the retention table and the central axis of the regular hexagon connecting portion 41 is any one of five grades of 0 degree, 15 degrees, 25 degrees, 35 degrees and 45 degrees, and when the intersection angle is 0 degree, the first-level screw holes and the second-level screw holes are completely coincided. The diameter of the first stage screw hole is 1.6-1.8 mm, the depth of the screw hole is 7.0-9.0 mm (from the surface of the head), the diameter of the second stage screw hole is 1.5mm, and the depth is 4.0-5.0 mm. The thread forms, the thread pitches and the like of the first-stage screw and the second-stage screw adopt international universal designs.
The surface of the root 3 is treated by any one of acid etching sand blasting, anodic oxidation or laser roughening; the surfaces of the head 1 and the body 2 are subjected to a mechanical polishing treatment. The head part 1, the body part 2 and the root part 3 of the cheekbone-passing implant are an integrated molding piece.
The material for manufacturing the bent cheekbone implant can be various biocompatible metals or alloy materials thereof, such as: one or more of pure titanium, titanium zirconium, pure tantalum, titanium-aluminum-vanadium alloy, tantalum-titanium alloy and the like, and other materials with similar properties are also in the protection range.
In the clinical operation, firstly, the preoperative oral cavity cone beam CT result is imported into implant design software, and according to the form and the bone quantity of the maxilla and the zygomatic bone, the zygomatic implant with proper size and radian is selected, and the method specifically comprises the following steps: total length, height of body arc segment. The maxillary incision line is designed according to the specific position and the number of the implant, and generally comprises a large arc incision at the top of an alveolar ridge and a loose incision additionally arranged in a zygomatic alveolar ridge area, a flap is turned over, the periphery of a zygomatic bone is widely stripped, a infraorbital hole is upwards displayed, the front outer side wall of a maxillary sinus is outwards exposed, the zygomatic alveolar ridge is backwards displayed, and the zygomatic bone and the maxilla are exposed. And (3) using a ball drill to fix a point on an alveolar ridge, preparing the implant socket step by step according to a preset implantation site and a preset direction and reaching a preset depth, wherein the diameter of the bone drill is phi 2.0, phi 2.8 or phi 3.5mm, and tapping can be carried out if necessary.
The zygomatic implant is of a bent design, and when the implant is screwed in, the radian section of the body can rotate by taking the long axis of the root as the center, so that the rotation only by taking the center line of the zygomatic implant as the axis of the traditional linear type zygomatic implant can be avoided. When the front outer side wall 5 of the maxillary sinus is obviously sunken or the maxillary bone is seriously atrophied vertically and horizontally, in these cases, the head part 1 and the body part 2 of the implant (namely, the first straight line part 21) and the radian part 22 are not limited by autogenous bones and teeth, the bent cheekbone-penetrating implant can be smoothly screwed in, and even if a small amount of bone tissues block, the maxillary sinus-penetrating implant can be removed by bone drill polishing.
The final implantation state of the curved cheekbone-passing implant is that the root 3 is implanted in the cheekbone and good initial stability is obtained; the convex side of the radian section 22 is attached to the concave front and outer maxillary sinus wall 5; the head 1 is positioned at the level of the alveolar ridge or partially protrudes out of the gingival tissue to be exposed in the oral cavity.
After the bent cheekbone-penetrating implant is in place, the head is screwed with a cover screw to perform soft tissue reduction, the incision is closed by suturing, and the operation is finished. When the initial stability of the zygomatic implant after implantation is high, it is considered to screw the angle abutment 4, remove the model, and manufacture an immediate denture.
Generally, the patient will be re-examined 3-6 months after surgery, the healing condition of the implant will be checked by taking an X-ray dental film and oral cavity cone beam CT, the covering screw and the healing abutment or the immediate denture will be removed, the appropriate angle abutment 4 (as shown in figure 2) will be screwed down by a torque wrench, the transfer rod will be in place, the impression will be made by silicon rubber, the upper support and the denture will be made by the processing factory, and finally the clinical wearing of the denture will be completed.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying any number of indicated technical features, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
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| CN202011636192.7A CN112826618B (en) | 2020-12-31 | 2020-12-31 | Bent cheekbone-passing implant structure |
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| CN202011636192.7A CN112826618B (en) | 2020-12-31 | 2020-12-31 | Bent cheekbone-passing implant structure |
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| EP4360586B1 (en) | 2022-10-24 | 2025-07-30 | Implacil de Bortoli - Material Odontológico S.A. | Zygomatic dental implant set |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013093927A1 (en) * | 2011-12-19 | 2013-06-27 | Madan Guatam | Three dimensional dental implants |
| CN103340692B (en) * | 2013-05-30 | 2016-01-20 | 南宁越洋科技有限公司 | A kind of implantation body for people's work post tooth during Alveolar bone insufficiency |
| EP3755264B1 (en) * | 2018-02-21 | 2022-08-31 | Southern Implants (Pty) Ltd. | Asymmetric zygomatic dental implant with partial micro thread/groove |
| US10702319B2 (en) * | 2018-07-09 | 2020-07-07 | Robert G. Hale | Apparatus and method for a transalveolar dental implant |
| ES3008961T3 (en) * | 2018-11-23 | 2025-03-25 | Nobel Biocare Services Ag | Multi-part implant |
| US11141245B2 (en) * | 2019-02-07 | 2021-10-12 | Dan Rosen | Angled dental implant with angled anchor point |
| CN111419447A (en) * | 2020-04-29 | 2020-07-17 | 上海交通大学医学院附属第九人民医院 | A composite abutment for zygomatic implant |
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