CN213641425U - Individualized bone meal bone grafting baffle - Google Patents
Individualized bone meal bone grafting baffle Download PDFInfo
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- CN213641425U CN213641425U CN202022623065.5U CN202022623065U CN213641425U CN 213641425 U CN213641425 U CN 213641425U CN 202022623065 U CN202022623065 U CN 202022623065U CN 213641425 U CN213641425 U CN 213641425U
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Abstract
The utility model relates to the field of medical equipment, especially, relate to a individualized bone meal bone grafting baffle. The utility model provides a bone conduction board is planted to individualized bone meal, include: a crown positioning and fitting part for fitting the crown surface of the tooth around the alveolar bone defect region; the bone meal planning and attaching part is used for matching with the outer surface of the alveolar bone defect area; an alveolar bone attachment portion for attaching an outer surface of an alveolar bone near an alveolar bone defect region; the alveolar bone joint part is provided with a nail placing hole and further comprises a connecting part, and the dental crown positioning joint part, the bone powder planning joint part and the alveolar bone joint part are connected through the connecting part. The utility model provides a personalized bone meal bone grafting baffle and preparation method thereof can effectively increase bone meal guide alveolar bone regeneration effect, and can avoid the too big scheduling problem of both sides alveolar bone form difference, can also avoid the bone meal extravagant to have characteristics such as simple structure, easy and simple to handle, safe practicality are strong, have good industrialization prospect.
Description
Technical Field
The utility model relates to the field of medical equipment, especially, relate to a individualized bone meal bone grafting baffle.
Background
Insufficient alveolar bone mass caused by inflammation, trauma or tumor surgery is a problem and challenge often faced in oral implantation clinical practice. In this case, one of the prerequisites and basic goals of oral implantation is to restore and reconstruct the lost bone tissue, so that the implant can be implanted in the ideal position, which is most favorable for repair and aesthetic effect.
The most common alveolar bone augmentation technique in clinical practice is guided bone regeneration. Guided bone regeneration is a bone augmentation technique that utilizes the biological scaffolding provided by bone graft material to guide the growth of bone cells into and rapid osteogenesis. However, the effect of the traditional guided bone regeneration is greatly influenced by the personal experience of a clinician, and the stacking and shaping of the bone grafting material depend on clinical perception and lack of standardization and individuation standards, thereby resulting in poor bone grafting effect.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, the present invention is directed to a personalized bone powder bone grafting guide plate and a method for constructing the same, which are used to solve the problems of the prior art.
In order to achieve the above objects and other related objects, the utility model provides a personalized bone powder bone grafting guide plate, which comprises:
a crown positioning and fitting part for fitting the crown surface of the tooth around the alveolar bone defect region;
the bone meal planning and attaching part is used for matching with the outer surface of the alveolar bone defect area;
an alveolar bone attachment portion for attaching an outer surface of an alveolar bone near an alveolar bone defect region;
the alveolar bone joint part is provided with a nail placing hole and further comprises a connecting part, and the dental crown positioning joint part, the bone powder planning joint part and the alveolar bone joint part are connected through the connecting part.
In some embodiments of the present invention, the bone meal planning attachment is used to surround an alveolar bone defect area.
In some embodiments of the present invention, the extension distance of the crown positioning and fitting portion is 13mm to 26 mm.
In some embodiments of the present invention, the attaching area of the crown positioning attaching part is 182-364 mm2。
In some embodiments of the present invention, the distal end of the crown positioning abutment comprises a circuitous portion.
In some embodiments of the present invention, the crown positioning and fitting portion is used to fit to the external side of the crown, the internal side of the crown and the chewing surface of the crown.
In some embodiments of the present invention, the bonding area of the alveolar bone bonding part is 30 to 50mm2。
In some embodiments of the present invention, the alveolar bone fitting portion is provided with a plurality of nail placing holes.
In some embodiments of the present invention, the plurality of screw placing holes are uniformly distributed on the alveolar bone fitting portion.
In some embodiments of the present invention, the diameter of the nail hole is 1.5-3 mm.
Drawings
Fig. 1 shows the overall structure schematic diagram of the personalized bone powder bone grafting guide plate provided by the utility model.
Fig. 2 is a schematic view showing the outside direction of the personalized bone powder bone grafting guide plate provided by the present invention.
Fig. 3 is a schematic view showing the inner side direction of the personalized bone powder bone grafting guide plate provided by the present invention.
Fig. 4 shows a schematic view of the bottom direction of the personalized bone powder bone grafting guide plate provided by the present invention.
Description of the element reference numerals
1 dental crown positioning and fitting part
2 planned bone meal bonding part
3 alveolar bone fitting part
31 nail placing hole
4 connecting part
5 bone meal planning area
Detailed Description
The utility model discloses the inventor provides an individualized bone meal bone grafting baffle and construction method through a large amount of exploratory studies, individualized bone meal bone grafting baffle can effectively increase bone meal guide alveolar bone regeneration effect, and can avoid the too big scheduling problem of both sides alveolar bone form difference, can also avoid the bone meal extravagant, has accomplished on this basis the utility model discloses the bone meal is planted to the inventor.
The utility model discloses the first aspect provides a construction method of individualized bone meal bone grafting baffle model, include:
s1), providing an alveolar bone three-dimensional model, wherein the alveolar bone three-dimensional model comprises a bone mass loss area;
s2) obtaining the alveolar bone defect area of the affected side according to the alveolar bone shape of the healthy side;
s3) constructing a bone meal planning and fitting part based on the outer surface of the alveolar bone defect area on the affected side;
s4) constructing a crown positioning and fitting part based on the crown surface of the tooth around the alveolar bone defect area;
s5) constructing an alveolar bone fit portion based on an outer surface of an alveolar bone near the alveolar bone defect region;
s6) constructing a pin placing hole on the alveolar bone fitted portion.
The utility model provides a construction method of individualized bone meal bone grafting baffle model can include: providing a three-dimensional model of an alveolar bone, the three-dimensional model of an alveolar bone comprising a bone mass loss region. Alveolar bone generally refers to the lower edge of the maxilla and the upper edge of the mandible where the roots of teeth are embedded. The bone mass deficiency region generally refers to a portion of alveolar bone where bone mass is considered insufficient and it is necessary to guide alveolar bone regeneration by supplementing bone powder. The three-dimensional model of the alveolar bone may generally include a three-dimensional model of at least a bone mass loss region on the alveolar bone and a portion around the bone mass loss region (e.g., adjacent teeth, etc.), and a portion corresponding to a mirror image of the bone mass loss region on the alveolar bone. Suitable methods for obtaining a three-dimensional model of the alveolar bone will be known to those skilled in the art. For example, the three-dimensional model can be obtained by introducing DICOM data of CT (e.g., CBCT) into software (e.g., Medraw, etc.). For another example, to ensure the reliability of three-dimensional reconstruction and mirroring, DICOM data with a layer thickness of less than or equal to 1mm and including CT from the supraorbital rim to the complete mandible may be imported into software, seed filling may be performed on the skull of the patient through HU values of 200 to 600 (adjusted according to the actual CT condition), and noise in the data may be removed to obtain the alveolar bone three-dimensional model.
The utility model provides a construction method of individualized bone meal bone grafting baffle model can also include: and acquiring the defective area of the alveolar bone at the affected side according to the shape of the alveolar bone at the healthy side. The utility model discloses in, can contrast affected side alveolar bone form (including bone volume disappearance region) and healthy side alveolar bone form usually to obtain the difference (for example, usually for having lacked some tissues) of bone volume disappearance region and healthy side alveolar bone form rather than corresponding, thereby obtain the shape in affected side alveolar bone defect region. In a preferred embodiment of the present invention, the specific method for obtaining the alveolar bone defect region of the affected side according to the alveolar bone shape of the healthy side comprises: and acquiring the defective region of the alveolar bone at the affected side according to the difference between the defective region of the alveolar bone at the affected side and the corresponding region of the alveolar bone at the healthy side by mirroring the form of the alveolar bone at the affected side. When mirroring the alveolar bone shape on the side of health, mirroring can be performed with reference to the midsagittal plane of the human body in general. And (4) obtaining the defective area of the affected alveolar bone by contrasting the defective area with the healthy area through mirror image. The bone grafting area is optimized through two parameters of space curvature and length-width ratio of the bone grafting area, the space curvature can be generally greater than 1.2, the length-width ratio of the bone grafting area can be generally less than 0.8 (if the condition is met after mirroring, optimization is not needed), and finally the bone powder planning area is obtained, so that the effects of reducing the bone powder absorption rate and maintaining the bone grafting shape can be achieved. The spatial curvature generally refers to the standard deviation (SD of BL) of the projected line distance from the buccal surface to the bone surface of the three-dimensional structure of the affected alveolar bone defect region. A suitable method for calculating the standard deviation of the projection line distance from the buccal outer surface of the alveolar bone defect region to the bone surface is known to those skilled in the art, for example, the alveolar bone defect region may be divided into squares with a side length of 1mm based on the coronal plane, the vertex of each square is projected in the direction perpendicular to the coronal plane to obtain the projection distance from the buccal outer surface of the alveolar bone defect region to the bone surface, and the set of the distances is determined as the standard deviation, which is the spatial curvature. The spatial curvature reflects the degree of concavity and convexity of the bone defect, with a larger curvature value indicating a more concave bone defect and a smaller curvature value indicating a shallower bone defect. The length-to-width ratio of the bone grafting area generally refers to the ratio of the coronal-root direction distance (mCA) to the near-to-far direction distance (mMD) of the alveolar bone defect area at the affected side, the coronal-root direction distance (mCA) is the maximum distance in the transverse direction of the alveolar bone defect area at the affected side, and the near-to-far direction distance (mMD) is the maximum distance in the sagittal plane direction of the alveolar bone defect area at the affected side.
The utility model provides a construction method of individualized bone meal bone grafting baffle model can also include: and constructing a bone powder planning and fitting part based on the outer surface of the affected alveolar bone defect area. The bone meal planning attaching part is usually attached to the outer surface of the alveolar bone defect area on the affected side (namely, the gap formed by the alveolar bone defect area on the affected side is usually adopted), so that the alveolar bone defect area can be surrounded and included, a certain open filling cavity for filling the bone meal can be formed through a biological membrane and tissues around the biological membrane, the filling cavity usually comprises the alveolar bone defect area, and after the cavity is fully filled with the bone meal, the inner cavity can be closed through the biological membrane, and the loss of the bone meal can be prevented. In a preferred embodiment of the present invention, the specific method for constructing the bone powder planning and fitting portion may be based on the defect area of the alveolar bone on the affected side: constructing a first guide plate reference surface based on the outer surface of the affected alveolar bone defect area, and constructing a bone meal planning and fitting part based on the first guide plate reference surface. The first guide plate datum plane is generally matched with the outer surface of the defective area of the affected alveolar bone. The bone meal planning and attaching part can be constructed and obtained by extending the first guide plate reference surface to the outer side (namely, the opposite direction relative to the direction facing the affected alveolar bone defect area). The extended distance generally corresponds to the thickness of the bone meal planning and bonding portion, for example, the extended distance and the thickness of the bone meal planning and bonding portion may be 1.5-4 mm, 1.5-2 mm, 2-2.5 mm, 2.5-3 mm, 3-3.5 mm, or 3.5-4 mm.
The utility model provides a construction method of individualized bone meal bone grafting baffle model can also include: and constructing a dental crown positioning fitting part based on the dental crown surface of the tooth around the alveolar bone defect area. The tooth crown positioning and fitting part is usually fitted on the tooth crown surface of the tooth around the alveolar bone defect area, and the tooth crown positioning and fitting part is usually required to have enough fitting area with the tooth crown surface of the tooth around the alveolar bone defect area, so that the individualized bone powder bone grafting guide plate can be guaranteed to be integrally stable when being fitted. For example, the crown positioning fit may fit to the crown surfaces of one or more (e.g., 2, 3, 4) teeth adjacent (e.g., may be left and/or right) to the alveolar bone defect region. For another example, the extending distance (e.g., the extending distance to the left and/or the right) of the crown positioning and fitting part may be 13 to 26mm, 13 to 15mm, 15 to 18mm, 18 to 21mm, 21 to 24mm, or 24 to 26mm according to the extending direction of the alveolar bone (i.e., the theoretical arrangement direction of healthy teeth on the alveolar bone). The crown positioning fit may generally fit to a suitable location on a crown, for example, may be an external crown and/or an internal crown and/or a crown chewing surface, and the like. In a preferred embodiment of the present invention, the specific method for constructing the crown positioning and fitting part may be based on the crown surface of the tooth around the alveolar bone defect region: and constructing a second guide plate reference surface based on the dental crown surface of the teeth around the alveolar bone defect area, and constructing a dental crown positioning and fitting part based on the second guide plate reference surface. The second guide reference surface generally conforms to the crown surface of the tooth surrounding the alveolar bone defect region. The crown locating abutment is constructed by extending the second guide reference outwardly (i.e. in a direction opposite to that facing the crown surface) by a distance. The distance of extension generally corresponds to the thickness of the crown positioning fit, for example, the distance of extension and the thickness of the bone meal planning fit may be 1.5-4 mm, 1.5-2 mm, 2-2.5 mm, 2.5-3 mm, 3-3.5 mm, or 3.5-4 mm.
The utility model provides a construction method of individualized bone meal bone grafting baffle model can also include: an alveolar bone-fitting portion is constructed based on an outer surface of an alveolar bone near an alveolar bone defect region. The bone powder planned abutment portion generally surrounds the alveolar bone defect region, and the bone powder planned abutment portion may further extend all around to form an alveolar bone abutment portion which is a portion to be abutted against an outer surface (for example, alveolar bone, teeth, etc.) of a tissue around the outer surface of the alveolar bone defect region on the affected side. Alveolar bone laminating portion can further provide the holding surface usually to can remain stable on the whole when guaranteeing individualized bone meal bone grafting baffle laminating. Alveolar bone fit portion usually lies in bone powder planning fit portion both sides (i.e. the direction unanimous with the tooth arrangement direction) and its one side that is close to the jawbone, for example, to the individualized bone powder bone graft baffle that is used for the alveolar bone of below, alveolar bone fit portion usually lies in bone powder planning fit portion both sides and its one side that is close to the mandible, for another example, to the individualized bone powder bone graft baffle that is used for the alveolar bone of top, alveolar bone fit portion usually lies in bone powder planning fit portion both sides and its one side that is close to the maxilla. The alveolar bone fitting part generally has a suitable fitting area, for example, the fitting area of the alveolar bone fitting part may be 30 to 50mm2、30～35mm2、35～40mm2、40～45mm2Or 45 to 50mm2. In a preferred embodiment of the present invention, the specific method for constructing the alveolar bone fitting portion may be based on the outer surface of the alveolar bone near the alveolar bone defect region: and constructing a third guide plate reference surface based on the outer surface of the alveolar bone near the alveolar bone defect area, and constructing an alveolar bone fitting part based on the third guide plate reference surface. Reference surface of third guide plateGenerally conforming to the outer surface of the alveolar bone adjacent to the alveolar bone defect region. The alveolar bone-fitting portion can be constructed by extending the third guide reference plane to the outside (i.e., to the opposite direction to the direction facing the outer surface of the alveolar bone near the alveolar bone defect region) by a certain distance. The distance of extension generally corresponds to the thickness of the alveolar bone graft, for example, the distance of extension and the thickness of the alveolar bone graft may be 1.5 to 4mm, 1.5 to 2mm, 2 to 2.5mm, 2.5 to 3mm, 3 to 3.5mm, or 3.5 to 4 mm.
The utility model provides a construction method of individualized bone meal bone grafting baffle model can also include: and constructing a nail placing hole on the alveolar bone fitting part. The screw insertion hole is generally located on and penetrates through the alveolar bone fitting portion, and may extend from an outer side of the alveolar bone fitting portion to a fitting surface thereof to the alveolar bone, for example. The nail placing hole is generally used for introducing a membrane nail to fix a biological membrane, so that the alveolar bone defect area can be covered by a membrane material after the personalized bone powder bone grafting guide plate is removed, and the regeneration effect of bone powder guide alveolar bone can be ensured. The shape and distribution of the stapling holes can be adjusted by the person skilled in the art, so that the fixing effect of the film material can be ensured. For example, a plurality of nail placing holes can be generally constructed on the alveolar bone fitting part, and the plurality of nail placing holes are uniformly distributed on the alveolar bone fitting part. For another example, the diameter of the nail hole may be 1.5-3 mm, 1.5-2 mm, 2-2.5 mm, or 2.5-3 mm.
The utility model provides a construction method of individualized bone meal bone grafting baffle model can also include: constructing a connecting part for connecting the bone powder planning fitting part and/or the dental crown positioning fitting part and/or the alveolar bone fitting part. The connection part is generally used for connecting various parts of the personalized bone graft guide plate, such as a bone planning attachment part and/or a crown positioning attachment part and/or an alveolar bone attachment part. In a preferred embodiment of the present invention, the connecting portion may be constructed based on the outer surface of the surrounding tissue (e.g., alveolar bone, tooth, etc.) of each of the fitting portions, for example, a specific method may be: a fourth guide reference surface is constructed based on the outer surface of the surrounding tissue, and a connection portion is constructed based on the fourth guide reference surface. The fourth guide reference surface generally fits to the outer surface of the tissue around each of the bonded portions. The resulting connection may be constructed by extending the fourth guide reference surface a distance outwardly (i.e. in a direction opposite to the direction facing the surrounding tissue of the attachment portion). The distance of extension generally corresponds to the thickness of the connecting portion, for example, the distance of extension and the thickness of the connecting portion may be 2-5 mm, 2-2.5 mm, 2.5-3 mm, 3-3.5 mm, 3.5-4 mm, 4-4.5 mm, or 4.5-5 mm.
The second aspect of the utility model provides a preparation method of individualized bone meal bone grafting baffle, the method includes: according to the utility model discloses the individualized bone powder bone grafting baffle model that the construction method of the individualized bone powder bone grafting baffle model that the first aspect provided found the acquisition prepares individualized bone powder bone grafting baffle. The method for preparing the personalized bone powder bone graft guide plate according to the personalized bone powder bone graft guide plate model provided by the first aspect of the present invention should be known to those skilled in the art, for example, 3D printing and other methods can be adopted, and the used material mainly can be titanium, titanium metal alloy and the like.
The utility model discloses the third aspect provides an individualized bone meal bone grafting baffle, by the utility model discloses the construction method of the individualized bone meal bone grafting baffle model that the first aspect provided constructs and obtains, or by the utility model discloses the preparation method preparation of the individualized bone meal bone grafting baffle that the second aspect provided obtains.
The utility model provides a personalized bone meal bone grafting baffle, as shown in figure 1-figure 4, include:
a crown positioning and fitting part 1 for fitting the crown surface of the tooth around the alveolar bone defect region;
the bone meal planning and attaching part 2 is used for matching with the outer surface of the alveolar bone defect area;
an alveolar bone attachment part 3 for attaching the outer surface of an alveolar bone near an alveolar bone defect region;
be equipped with on alveolar bone laminating portion 3 and put nail hole 31, still include connecting portion 4, connect through connecting portion 4 between crown location laminating portion 1, bone meal planning laminating portion 2 and the alveolar bone laminating portion 3. When the personalized bone powder bone grafting guide plate is used, referring to other certification documents, soft tissues around a bone mass deficiency area of a patient can be peeled off, then the crown positioning and fitting part 1 of the personalized bone powder bone grafting guide plate is fitted on corresponding teeth to perform guide plate positioning, a biological membrane (such as a collagen membrane) is placed in the inner side of the bone powder planning and fitting part, then a fixing nail can be placed in the fixing nail through the nail placing hole 31 to fix the biological membrane, a certain open filling cavity for filling bone powder can be formed through the biological membrane and tissues around the biological membrane, then bone powder filling can be performed according to the form of the biological membrane and the bone powder planning and fitting part matched with the biological membrane, after a proper amount of bone powder is filled, the biological membrane can cover a diseased side alveolar bone defect area, and then the bone powder filling can be completed.
The utility model provides an among the individualized bone meal bone grafting baffle, bone meal planning laminating portion 2 is used for around alveolar bone defect region usually. The bone meal planning and jointing part is usually jointed on the outer surface of the alveolar bone defect area on the affected side (namely, at the gap formed by the alveolar bone defect area on the affected side), so that the alveolar bone planning and jointing part can be used for surrounding and enclosing the alveolar bone defect area, a certain open filling cavity for filling the bone meal can be formed through a biological membrane and tissues around the biological membrane, the formed filling cavity usually comprises the alveolar bone defect area, and after the cavity is fully filled with the bone meal, the inner cavity can be closed through the biological membrane, and the bone meal can be prevented from losing.
The utility model provides an among the individualized bone meal bone grafting baffle, the tooth crown surface of tooth around the alveolar bone defect region is laminated usually to tooth crown location laminating portion 1, and tooth crown location laminating portion need have sufficient laminating area with the tooth crown surface of tooth around the alveolar bone defect region usually to can guarantee that individualized bone meal bone grafting baffle is whole when laminating can remain stable. For example, the crown positioning fit may fit to the crown surfaces of one or more (e.g., 2, 3, 4) teeth adjacent (e.g., may be left and/or right) to the alveolar bone defect region. For another example, the extending distance (e.g., the extending distance to the left and/or the right) of the crown positioning and fitting part may be 13 to 26mm, 13 to 15mm, 15 to 18mm, 18 to 21mm, 21 to 24mm, or 24 to 26mm according to the extending direction of the alveolar bone (i.e., the theoretical arrangement direction of healthy teeth on the alveolar bone). The crown positioning fit may generally fit over the crown at a suitable location, for example, the distal end of the crown positioning fit 1 (i.e., the end distal to the bone planning fit) may include a circuitous portion. As another example, it may be the outside of the crown and/or the inside of the crown and/or the chewing surface of the crown, etc.
The utility model provides an among the individualized bone meal bone grafting baffle, alveolar bone laminating portion 3 laminates in the surface of the alveolar bone near the alveolar bone defect region usually. Bone meal plans laminating portion and usually surrounds in alveolar bone defect region, and bone meal plans laminating portion further to extending all around, can form the part of laminating in the surface (for example, alveolar bone, tooth etc.) of the tissue around the regional surface of affected side alveolar bone defect, alveolar bone laminating portion promptly to can further provide the holding surface, can remain stable on the whole when guaranteeing individualized bone meal bone grafting baffle laminating. The alveolar bone fit is typically located on both sides of the bone meal plan fit and on the side thereof closer to the jaw bone. The alveolar bone fitting part generally has a suitable fitting area, for example, the fitting area of the alveolar bone fitting part may be 30 to 50mm2、30～35mm2、35～40mm2、40～45mm2Or 45 to 50mm2。
The utility model provides an among the individualized bone meal bone grafting baffle, put the nail hole and lie in alveolar bone laminating portion usually, and run through alveolar bone laminating portion. The shape and distribution of the stapling holes can be adjusted by the person skilled in the art, so that the fixing effect of the film material can be ensured. For example, a plurality of nail placing holes can be generally constructed on the alveolar bone fitting part, and the plurality of nail placing holes are uniformly distributed on the alveolar bone fitting part. For another example, the diameter of the nail hole may be 1.5-3 mm, 1.5-2 mm, 2-2.5 mm, or 2.5-3 mm.
The utility model provides an among the individualized bone meal bone grafting baffle, connecting portion are used for connecting each part of individualized bone meal bone grafting baffle usually (for example, bone meal planning laminating portion and/or dental crown location laminating portion and/or alveolar bone laminating portion etc.), make and form suitable relation of connection between each part, guarantee individualized bone meal bone grafting baffle holistic stable in structure. The components can be connected through connecting parts or directly connected.
The utility model discloses the fourth aspect provides a computer readable storage medium, its storage has computer program, the program realizes when being executed by the treater the utility model discloses the step of the construction method of individualized bone meal bone grafting baffle model that the first aspect provided, or the utility model discloses the step of the preparation method of individualized bone meal bone grafting baffle that the second aspect provided.
The utility model discloses a fifth aspect provides an equipment, include: the bone powder bone grafting guide plate comprises a processor and a memory, wherein the memory is used for storing a computer program, and the processor is used for executing the computer program stored in the memory so as to enable the equipment to execute the steps of the construction method of the personalized bone powder bone grafting guide plate model provided by the first aspect of the invention or the steps of the preparation method of the personalized bone powder bone grafting guide plate provided by the second aspect of the invention.
A sixth aspect of the present invention provides an apparatus, the apparatus may comprise:
the three-dimensional model providing module is used for providing a three-dimensional model of the alveolar bone, and the three-dimensional model of the alveolar bone comprises a bone mass missing area;
the affected side alveolar bone defect region acquisition module acquires an affected side alveolar bone defect region according to the healthy side alveolar bone shape;
a bone meal planning joint part construction module is constructed and used for constructing a bone meal planning joint part based on the outer surface of the alveolar bone defect area on the affected side;
the dental crown positioning and fitting part constructing module is used for constructing a dental crown positioning and fitting part based on the dental crown surface of the teeth around the alveolar bone defect area;
the alveolar bone joint construction module is used for constructing an alveolar bone joint based on the outer surface of the alveolar bone near the alveolar bone defect area;
the screw placing hole constructing module is used for constructing a screw placing hole on the alveolar bone fitting part;
optionally, the method further includes: and the guide plate preparation module is used for preparing the chin shaping operation fixing guide plate according to the constructed personalized bone powder bone grafting guide plate model.
The utility model discloses in, the theory of operation of each module can refer to as above in the above-mentioned device individualized bone meal bone grafting baffle model's construction method and/or individualized bone meal bone grafting baffle's preparation method, does not do here and gives unnecessary details.
The utility model provides a personalized bone meal bone grafting baffle and preparation method thereof can effectively increase bone meal guide alveolar bone regeneration effect, and can avoid the too big scheduling problem of both sides alveolar bone form difference, can also avoid the bone meal extravagant to have characteristics such as simple structure, easy and simple to handle, safe practicality are strong, have good industrialization prospect.
The following examples further illustrate the invention of the present application, but do not limit the scope of the present application.
Example 1
(1) The DICOM (CBCT) data of the patients are subjected to three-dimensional reconstruction by using Medraw software, wherein the DICOM (CBCT) data comprise bone mass missing regions, bony landmark points are selected for mirror image registration, and other certification documents are referred.
(2) And acquiring the defective area of the alveolar bone at the affected side according to the shape of the alveolar bone at the healthy side, and referring to other certification documents.
(3) and a, constructing a bone powder planning joint part by outwards expanding for 2-3mm based on the outer surface of the defective area of the alveolar bone at the affected side by using an 'expansion' function.
b. Using the same method, a crown positioning fit portion is constructed based on the crown surface of the tooth around the alveolar bone defect region, and an alveolar bone fit portion is constructed based on the outer surface of the alveolar bone near the alveolar bone defect region.
c. And constructing a nail placing hole on the alveolar bone fitting part by using a Boolean function.
d. And finally, eliminating the interference phenomenon between the guide plate and the alveolar bone, the dental crown and the like by using a 'Boolean reduction' or 'die drawing' function, acquiring the final shape of the guide plate, and referring to other certification documents.
(4) And outputting the obtained personalized bone powder bone grafting guide plate model to obtain an STL file, and performing 3D printing by adopting a Formlab Form 23D printer, wherein the material is a Dental SG resin with biocompatibility, so as to construct the personalized bone powder bone grafting guide plate.
(5) The obtained personalized bone powder bone grafting guide plate is applied to alveolar bone augmentation surgery, and the whole surgery process is shown from left to right and from top to bottom by referring to other certification documents in the preoperative picture and the intraoperative picture. In the art, peel off the soft tissue around the regional deletion of patient's bone mass, carry out the baffle location on the tooth that will individualize the tooth crown location laminating portion of bone meal grafting baffle afterwards to corresponding tooth, and put into the biomembrane through the inboard of bone meal planning laminating portion, put into the staple through putting the nail hole afterwards, with fixed biomembrane (collagen membrane), can form certain open filling cavity that is used for filling the bone meal through biomembrane and its tissue on every side, carry out the bone meal according to the biomembrane and rather than the form of complex bone meal planning laminating portion and fill, after filling a proper amount of bone meal, can cover affected side alveolar bone defect area with the biomembrane, at last sew up patient's soft tissue and biomembrane, can accomplish the bone meal and fill.
In the whole operation process, the personalized bone powder bone grafting guide plate can obviously avoid waste of bone powder, and the operation process is simple and convenient to operate and has strong safety.
As can be seen from the post-operation photographs, the form of the alveolar bone after the operation basically accords with the expectation, and the form of the alveolar bones at two sides has no obvious difference.
To sum up, the utility model discloses various shortcomings in the prior art have effectively been overcome and high industry value has.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The personalized bone powder bone grafting guide plate is characterized by comprising:
a crown positioning and fitting part (1) for fitting the crown surface of the tooth around the alveolar bone defect region;
the bone meal planning and attaching part (2) is used for matching with the outer surface of the alveolar bone defect area;
an alveolar bone attachment part (3) for attaching to the outer surface of an alveolar bone near an alveolar bone defect region;
be equipped with on alveolar bone laminating portion (3) and put nail hole (31), still include connecting portion (4), connect through connecting portion (4) between dental crown location laminating portion (1), bone meal planning laminating portion (2) and alveolar bone laminating portion (3).
2. The individualized bone powder bone grafting guide plate according to claim 1, wherein the bone powder planning abutment (2) is adapted to surround an alveolar bone defect area.
3. The personalized bone powder bone grafting guide plate according to claim 1, wherein the extension distance of the crown positioning attaching part (1) is 13 mm-26 mm.
4. The personalized bone powder bone grafting guide plate according to claim 1, characterized in that the fitting area of the crown positioning fitting part (1) is 182-364 mm2。
5. The bone-grafting guide plate according to claim 1, characterized in that the distal end of the crown-positioning fit (1) comprises a circuitous part.
6. The bone-grafting guide plate according to claim 1, wherein the crown-positioning fit part (1) is used for fitting to the external side of the crown, the internal side of the crown and the chewing surface of the crown.
7. As claimed in claim 1The personalized bone powder bone grafting guide plate is characterized in that the joint area of the alveolar bone joint part (3) is 30-50 mm2。
8. The individualized bone powder bone grafting guide plate according to claim 1, wherein the alveolar bone fitting part (3) is provided with a plurality of nail placing holes (31).
9. The individualized bone powder bone grafting guide plate according to claim 8, wherein the plurality of nail placing holes (31) are uniformly distributed on the alveolar bone fitting part (3).
10. The personalized bone powder bone grafting guide plate according to claim 1, wherein the diameter of the nail placing hole (31) is 1.5-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022623065.5U CN213641425U (en) | 2020-11-13 | 2020-11-13 | Individualized bone meal bone grafting baffle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112263358A (en) * | 2020-11-13 | 2021-01-26 | 上海交通大学医学院附属第九人民医院 | Personalized bone powder bone grafting guide plate and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112263358A (en) * | 2020-11-13 | 2021-01-26 | 上海交通大学医学院附属第九人民医院 | Personalized bone powder bone grafting guide plate and construction method thereof |
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