CN1714765A - Dental implant with porous structure in the connective tissue contact area and its making process - Google Patents
Dental implant with porous structure in the connective tissue contact area and its making process Download PDFInfo
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- CN1714765A CN1714765A CN 200410081014 CN200410081014A CN1714765A CN 1714765 A CN1714765 A CN 1714765A CN 200410081014 CN200410081014 CN 200410081014 CN 200410081014 A CN200410081014 A CN 200410081014A CN 1714765 A CN1714765 A CN 1714765A
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Abstract
The dental implant with porous structure in the connective tissue contact area is one columnar body and has three different sections in the surface including one smooth upper section of epithelium tissue contacting area, one porous middle section of connective tissue contacting area and one tough lower section of bone tissue contacting area. The dental implant forms porous structure in the connective tissue contacting area, so that the connective tissue can grow into the porous structure to raise the combination strength between peripheral tissue and the implant surface, strengthen the biological barrier function of the implant and raise the long term successful rate. The present invention also provides the making process of the dental implant.
Description
Technical field
The invention provides the tooth implant that uses in a kind of stomatology field.In addition, the manufacture method that also relates to this tooth implant.
Background technology
Implant denture has become one of main treatment means of clinical repair dentition defect and defect of dentition.After implanting, implantation body forms implantation body-soft tissue and two interfaces of implantation body-osseous tissue with soft, sclerous tissues on every side respectively.Substitute as natural teeth; tooth implant need enter the interior environment of soft tissue and bone from the oral environment of outside; and when functionating, protect the long-term stability at its root synosteosis interface; prevent that destructive factors such as food catabolite and antibacterial in the oral cavity, toxin from corroding in the jawbone in the environment, this just needs to set up healthy implantation body-gingival soft tissue interface.
For a long time, a large amount of research mainly concentrates on the combination interface of implantation body-bone, promptly change the form and the chemical constituent of implant surface, promote the immediate union of implantation body and bone, integrate (Osseointergration) to obtain good bone by surface modifying methods such as physics, chemistry.For example, how research makes implantation body-bone contact interface become coarse or form porous structure, is beneficial to bone regeneration around implant osseous tissue and implant surface and forms firm mechanical bond, thereby strengthen the primary stability of implantation body in osseous tissue.Similarly research can be seen in US6095817A, in a lot of documents such as RU2146113C and US5639237A, these researchs all are to make the coarse or porous of implant surface and osseous tissue contact site, but implantation body and surrounding soft tissue contact site always are slick surface texture.
Implantation body for a success, when obtaining perfect bone integration, formation has the implantation body-soft tissue interface of biological barrier effect, being the biological confinement barrier (biological seal barrier) of implantation body's epithelium cuff, is one of implantation body's achieving success essential condition equally.A large amount of statistical results confirm, implantation body becomes flexible, comes off clinically, quite a few reason is because the destruction of neck soft confinement barrier, make osseointegrated interface original and that the oral cavity open environment is isolated be subjected to the destruction of antibacterial, the invasion and attack of toxin, finally cause the forfeiture of osseointegrated interface, the implant denture failure.
Along with improving constantly of implant denture success rate, the patient is to the also corresponding raising of the requirement of planting technology.At once implant denture can shorten clinical treatment and repairing efficiency, and can prevent the frontal resorption that extension implant brings, thereby plantation at once becomes the developing direction of implant denture with bearing a heavy burden at once.The experimental results shows, obtaining the good soft tissue sealing of implant neck is one of key factor of all kinds of implantation bodys success, especially for the implantation body of bearing a heavy burden at once, owing to lack the enclosed environment isolated with the oral cavity after implanting, the intrusion that is more vulnerable to antibacterial causes the plantation failure.Therefore, research implantation body-soft tissue interface, in the hope of obtaining the good soft tissue sealing of implant neck, significant to the long-term success rate that improves implantation body.
Thereby under the prerequisite that obtains good bone integration, can implant surface form complete with its neck soft and combine firm epithelium cuff, is one of key factor that influences implantation body's success rate at a specified future date.
Natural periodontal connective fiber one end is imbedded in the cementum, and alveolar bone and gingiva tissue around the other end connects form the important natural cover for defense (see figure 1) that stops that harmful substance is invaded in the oral cavity.Implant surface does not have cementum and periodontal membrane fiber, thus the bone regeneration around implant fibrous connective tissue adhere to combination to the formation at synosteosis interface with stablize most important.
The structural difference of periodontal tissue between implantation body and the natural teeth shows the fibrous connective tissue aspect, be implantation body with natural teeth around the trend of connective fiber and adhering mode different.Desmodontium around the natural teeth in the gingiva tissue, in growth course in cementum in the oblique gingival epithelium tissue around extending into, thereby tight with the dental surface combination, and the gingival epithelium on support top, formed natural teeth and prevented that the gingiva root is to the biological barrier of shrinking back on every side.Studies show that, the gingival fiber of ganoid bone regeneration around implant is arranged in parallel mostly or is surrounded on implant surface (Fig. 2), the combination of gingival fiber and implant surface is just simply adhered to, the effect of external force is easy to the gingival fiber of bone regeneration around implant is separated with implant surface, this gingival fiber that is arranged in parallel has reduced the biological barrier effect of implant neck, thus to the intrusion that prevents harmful substance in the oral cavity and resist ability that external force stimulates a little less than.Though there is the scholar to think, bone regeneration around implant is this be arranged in parallel or around fibrous connective tissue also played the effect of biological barrier to a certain extent, if but can form the desmodontium of diagonal around the similar natural teeth or arranged vertical in bone regeneration around implant, and can and implant surface form combination closely, will strengthen the biological closing function of bone regeneration around implant soft tissue, the root that prevents gingival epithelium is to shrinking back.Therefore, the orientation of ideal bone regeneration around implant fibrous connective tissue should be with natural teeth around the orientation of fibrous connective tissue similar.
Summary of the invention
The objective of the invention is to improve deficiency of the prior art, provide a kind of under the prerequisite that does not change implantation body's diameter, the aperture structures of many groups of depressions of can be in the surface preparation of implantation body and connective tissue contact site different sizes, and pore size is than uniformity, the implantation body that makes it obtain combining closely with the bone regeneration around implant connective tissue.
Another object of the present invention provides the method for making above-mentioned implantation body.
After tooth implant was implanted in the dental bed of oral cavity, corresponding three-layer weave: epimere was the epithelial tissue contact area corresponding to the epithelial tissue layer, and the corresponding connective tissue layer in stage casing is the connective tissue contact area territory, and the corresponding osseous tissue layer of hypomere is the osseous tissue contact area.
The tooth implant that the connective tissue contact area of implant surface provided by the invention has loose structure is a column, the top-down three sections zones of the side perisporium of this column, topmost one section epithelial tissue contact area is a smooth surface area, one section connective tissue contact area territory is the porous zone with many group pit-holes below it, and bottom one section osseous tissue contact area is the rough surface zone.
Based on above-mentioned theory, our research design at the surface modifying method of implantation body-soft tissue contact site.The contact site of implantation body and soft tissue comprises implantation body-epithelial tissue contact site and implantation body-connective tissue contact site.Implantation body-epithelial tissue contact site and oral cavity directly communicate, in order to prevent in the oral cavity bacterial plaque and to adhere to, still be designed to slick surface texture in implantation body-epithelial tissue contact site, but because the surface texture of implantation body-connective tissue contact site might be simulated the gingiva arrangement of natural teeth and be adhered to, thereby we become to be fit to that the bone regeneration around implant connective tissue is grown into and bonded pore structure with implantation body-connective tissue contact site Design and Machining, to strengthen the bond strength of implantation body and connective tissue.It is the traditional view of smooth surface that implantation body-soft tissue contact site has been broken in this design, improved existing implant surface and surrounding soft tissue in conjunction with bad drawback, and confirmed that by zoopery size, the degree of depth and the porosity of the hole of the connective tissue contact site that we design can make the fibrous connective tissue of bone regeneration around implant grow in the hole and form firm combination.
The hole that distributes on the lateral circle surface of porous of the present invention zone, the preferred 30-50 micron of its degree of depth, the preferred 30-80 micron of its diameter, the preferred 80-120 micron of pitch of holes.
The height of the described epithelial tissue contact area of this implantation body can be the 1-1.5 millimeter, and the height in described connective tissue contact area territory can be the 1.5-3 millimeter, and the height of described osseous tissue contact area can be the 9-16 millimeter.
Hole in the implantation body provided by the invention adopts laser processing to make:
Used laser is the frequency doubled light of Nd:YAG, wavelength 532nm, and the about 10ns of pulsewidth, pulse frequency 10Hz uses lens focus;
With implantation body be fixed on one rotatable and can be on the support of three-dimensional adjusted;
The collimation of the side of adjusting implantation body and the light path of used generating laser, and make the side surface of implantation body be positioned at the place, focal plane of focussed laser beam;
Rotation and mobile planting body punch on corresponding connective tissue contact area territory, its cylindrical side.
Regulate laser single-pulse energy and action time, the may command punching degree of depth; Use the lens of different focal, can change the diameter in hole, regulate the central shaft anglec of rotation, can change pitch of holes.
The side surface of tooth implant in the connective tissue contact area territory of implantation body that the connective tissue contact area that this utility model provides has loose structure forms loose structure, the preferred 30-50 micron of its degree of depth, the preferred 30-80 micron of its diameter, the preferred 80-120 micron of pitch of holes, through experiment confirm, pore structure at these numerical rangies can make the bone regeneration around implant fibrous connective tissue grow into wherein, strengthened the bond strength of surrounding tissue and implant surface, with strengthening the biological barrier function of implantation body's epithelium cuff, improve the success rate at a specified future date of implantation body.
Formed the processing method of loose structure in implant surface in the past, mostly be that metal or ceramic particle with circle is sintered to substrate material surface to obtain porous structure, but the pore size inequality of this method preparation, the diameter in hole is difficult to control, and has increased the diameter of modification place implantation body.First Application laser processing of the present invention processes in implantation body connective tissue contact site and is fit to the pore structure that fibrous connective tissue is grown into, used laser is Nd:YAG (neodymium: the frequency doubled light iridium aluminium garnet), because this laser peak is higher, after adjusting the various parameters of laser processor, could highly process the needed pore size and the degree of depth for implantation body's connective tissue contact area of 1.5-3 millimeter scope.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 moves towards sketch map for gingival fiber around the natural teeth;
The sketch map that Fig. 2 is arranged in parallel for existing smooth implant surface gingival fiber;
Fig. 3 is parallel to the photo of implant surface for the orientation of smooth bone regeneration around implant collagen fiber;
Fig. 4 is the structural representation of implantation body provided by the invention;
Fig. 5 is that implantation body provided by the invention implants the sketch map of back bone regeneration around implant gingival fiber in the implant surface arranged askew;
Fig. 6 is grow into photo in the hole in implantation body provided by the invention connective tissue contact area territory of collagenous fiber bundle.
The specific embodiment
As shown in Figure 4, the tooth implant 1 that connective tissue contact area provided by the invention has loose structure is column, the top-down three sections zones of the side perisporium of this column, topmost one section epithelial tissue contact area is a smooth surface area 11, one section connective tissue contact area territory is the porous zone 12 with many group pit-holes below it, and bottom one section osseous tissue contact area is sandblast rough surface zone 13.
The hole 121 that distributes on the lateral circle surface of connective tissue contact area territory, its degree of depth are 40 microns, 60 microns of its diameters, 100 microns of pitchs of holes.
The height of the epithelial tissue contact area 11 of this implantation body is 1.25 millimeters, and the height in connective tissue contact area territory 12 is 2.0 millimeters, and the height of osseous tissue contact area 13 is 13 millimeters.
Be different from the implantation body of existing smooth connective tissue contact area, the surface in the connective tissue contact area territory of this implantation body is the porous zone, because the porous structure of material surface can be induced grow into (the seeing Fig. 5,6) of fibrous connective tissue, and can form the mechanical lock junction structure, thereby implantation body and on every side the fibrous connective tissue contact area prepare porous structure, make the orientation (Fig. 5) of fibrous connective tissue on every side of bone regeneration around implant fibrous connective tissue simulation natural teeth, thereby strengthen the biological barrier function of implantation body's epithelium cuff.And the implantation body on top-epithelial tissue contact area still is a smooth surface, because this section implantation body may communicate with the oral cavity, slick surface can prevent food debris in the oral cavity and and the sticking of bacterial plaque, avoid the generation of bone regeneration around implant inflammation, thereby be beneficial to keeping of the long-term success rate of implantation body.
In addition, from the contrast of Fig. 3 and Fig. 6 as can be seen, I partly is an implantation body, and the connective tissue contact area territory of existing implantation body is a smooth surface, collagen fiber (black lines in the light areas among Fig. 3) around it are parallel to implant surface to be arranged, and its bond strength deficiency is tangible.And this implantation body is tangible (Fig. 6) with the bond strength enhancing of connective tissue on every side.
Method with this implantation body of Laser Processing is:
1. used laser is the frequency doubled light of Nd:YAG, wavelength 532nm, and the about 10ns of pulsewidth, pulse frequency 10Hz uses lens focus.
2. a disk samples seat is placed on the adjustable support of three-dimensional, specimen holder can about, about and fore-and-aft direction move, specimen holder is provided with a central shaft, it can rotate with respect to described support, the disk samples seat is provided with angle index.
Implantation body's idiosome is fixed on this specimen holder central shaft.
3. regulate the side of implantation body and the collimation of the light path of used generating laser, and the focal plane that makes the side surface of implantation body be positioned at focussed laser beam is located.
4. the drive mechanism Rotating with Uniform central shaft by being connected with central shaft, and regulate the specimen holder height can be in the evenly punching of connective tissue contact area surface of column implantation body, and obtains the pitch of holes that needs.
Regulate pulsed laser energy and action time, the may command punching degree of depth; Use the lens of different focal, can change the diameter in hole; Regulate the central shaft anglec of rotation, can change pitch of holes.
Claims (10)
1, a kind of connective tissue contact area has the tooth implant of loose structure, be column, it is characterized in that: the top-down three sections zones of the side perisporium of this column, topmost one section epithelial tissue contact area is a smooth surface area, one section connective tissue contact area territory is the porous zone with many group pit-holes below it, and bottom one section osseous tissue contact area is sandblast rough surface zone.
2, implantation body according to claim 1 is characterized in that: the hole that distributes on the lateral circle surface of described porous zone, its degree of depth is the 30-50 micron.
3, implantation body according to claim 1 is characterized in that: the hole that distributes on the lateral circle surface of described porous zone, its diameter is the 30-80 micron.
4, implantation body according to claim 1 is characterized in that: the spacing in the hole that distributes on the lateral circle surface of described porous zone is the 80-120 micron.
5, implantation body according to claim 1 is characterized in that: the height in described connective tissue contact area territory can be the 1.5-3 millimeter.
6, implantation body according to claim 5 is characterized in that: the height of described epithelial tissue contact area is the 1-1.5 millimeter, and the height of described osseous tissue contact area is the 9-16 millimeter.
7, a kind of method of making tooth implant as claimed in claim 1 is characterized in that:
With this implantation body of Laser Processing:
(1) used laser is the frequency doubled light of Nd:YAG, wavelength 532nm, and the about 10ns of pulsewidth, pulse frequency 10Hz uses lens focus;
(2) implantation body is fixed on one rotatable and can be on adjustable support on the three-dimensional;
(3) collimation of the light path of the side of adjusting implantation body and used generating laser, and make the side surface of implantation body be positioned at the place, focal plane of focussed laser beam;
(4) rotation and mobile planting body punch on corresponding connective tissue contact area territory, its cylindrical side.
8, method according to claim 7 is characterized in that: by regulating laser single-pulse energy and action time, the control punching degree of depth.
9, method according to claim 7 is characterized in that: by using the lens of different focal, change the diameter in hole.
10, method according to claim 7 is characterized in that: by regulating the described central shaft anglec of rotation, change pitch of holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100810147A CN100381109C (en) | 2004-07-02 | 2004-09-30 | Dental implant with porous structure in the connective tissue contact area and its making process |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200420072943.7 | 2004-07-02 | ||
| CN200420072943 | 2004-07-02 | ||
| CNB2004100810147A CN100381109C (en) | 2004-07-02 | 2004-09-30 | Dental implant with porous structure in the connective tissue contact area and its making process |
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| Publication Number | Publication Date |
|---|---|
| CN1714765A true CN1714765A (en) | 2006-01-04 |
| CN100381109C CN100381109C (en) | 2008-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100810147A Expired - Fee Related CN100381109C (en) | 2004-07-02 | 2004-09-30 | Dental implant with porous structure in the connective tissue contact area and its making process |
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| CN (1) | CN100381109C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101933847A (en) * | 2010-09-10 | 2011-01-05 | 深圳市宝安区石岩人民医院 | Single-tooth residual root implant |
| CN102525672A (en) * | 2010-12-29 | 2012-07-04 | 北京汇福康医疗技术有限公司 | Oral implant abutment and manufacture method thereof |
| CN102715960A (en) * | 2012-06-01 | 2012-10-10 | 上海交通大学 | Dental implant and preparation method thereof |
| CN104055593A (en) * | 2013-08-01 | 2014-09-24 | 广州中国科学院先进技术研究所 | Personalized dental implant |
| CN111513883A (en) * | 2020-04-26 | 2020-08-11 | 四川大学 | Method for manufacturing zirconia restoration based on photocuring rapid prototyping |
| WO2021180188A1 (en) * | 2020-03-13 | 2021-09-16 | 浙江中医药大学 | Implant capable of increasing sealing effect of soft tissue around implant |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102715961B (en) * | 2012-07-11 | 2015-02-04 | 唐志辉 | Individualized anatomical type tooth root implant |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5639237A (en) * | 1995-06-08 | 1997-06-17 | Fontenot; Mark G | Dental prosthesis having indentations |
| US6095817A (en) * | 1999-02-24 | 2000-08-01 | Sulzer Calcitek Inc. | Dental implant having multiple textured surfaces |
| RU2146113C1 (en) * | 1999-03-10 | 2000-03-10 | Перова Марина Дмитриевна | Osteointegrated dental implant |
| JP3571603B2 (en) * | 2000-03-06 | 2004-09-29 | 株式会社エム・エム・ティー | Jawbone prosthesis with root |
| IL142933A0 (en) * | 2001-05-03 | 2002-04-21 | Dentis Technology Ltd | Polymeric dental implant and method for use thereof |
| EP1433489A1 (en) * | 2002-12-23 | 2004-06-30 | Degradable Solutions AG | Biodegradable porous bone implant with a barrier membrane sealed thereto |
-
2004
- 2004-09-30 CN CNB2004100810147A patent/CN100381109C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101933847A (en) * | 2010-09-10 | 2011-01-05 | 深圳市宝安区石岩人民医院 | Single-tooth residual root implant |
| CN102525672A (en) * | 2010-12-29 | 2012-07-04 | 北京汇福康医疗技术有限公司 | Oral implant abutment and manufacture method thereof |
| CN102525672B (en) * | 2010-12-29 | 2015-03-11 | 北京汇福康医疗技术有限公司 | Oral implant abutment and manufacture method thereof |
| CN102715960A (en) * | 2012-06-01 | 2012-10-10 | 上海交通大学 | Dental implant and preparation method thereof |
| CN104055593A (en) * | 2013-08-01 | 2014-09-24 | 广州中国科学院先进技术研究所 | Personalized dental implant |
| WO2021180188A1 (en) * | 2020-03-13 | 2021-09-16 | 浙江中医药大学 | Implant capable of increasing sealing effect of soft tissue around implant |
| CN111513883A (en) * | 2020-04-26 | 2020-08-11 | 四川大学 | Method for manufacturing zirconia restoration based on photocuring rapid prototyping |
| CN111513883B (en) * | 2020-04-26 | 2021-12-17 | 四川大学 | Method for manufacturing zirconia restoration based on photocuring rapid prototyping |
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| Publication number | Publication date |
|---|---|
| CN100381109C (en) | 2008-04-16 |
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