CN101732098B - An anti-fretting damage dental implant in the bone - Google Patents

An anti-fretting damage dental implant in the bone Download PDF

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CN101732098B
CN101732098B CN 200910216189 CN200910216189A CN101732098B CN 101732098 B CN101732098 B CN 101732098B CN 200910216189 CN200910216189 CN 200910216189 CN 200910216189 A CN200910216189 A CN 200910216189A CN 101732098 B CN101732098 B CN 101732098B
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implant
radius
thread
body portion
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CN101732098A (en
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于海洋
高姗姗
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四川大学
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Abstract

本发明公开了一种抗微动损伤的骨内牙种植体,由基桩(3)、颈部(1)和有外螺纹的体部(2)构成,其中种植体的颈部(1)的周面分为舌侧区(A)、颊侧区(B)、近中区(C)、远中区(D)四个区域;近中区(C)、远中区(D)表面涂覆有羟基磷灰石/四方氧化锆复合陶瓷涂层,舌侧区(A)、颊侧区(B)涂覆有羟基磷灰石涂层;体部(2)的外螺纹的螺纹牙顶(2a)和螺纹牙底(2b)均为弧形,两个弧形平滑连接,螺纹牙顶(2a)的弧形的曲率半径为体部(2)半径的1/4-1/6,螺纹牙底(2b)的弧形半径为螺纹牙顶(2a)的弧形半径的1/3-1/4。 The present invention discloses an endosseous dental implants of an anti-fretting damage, (3), the neck portion (1) and a body portion with an external thread (2) consists of foundation piles, wherein the neck portion of the implant (1) lingual surfaces is divided into a peripheral region (a), buccal region (B), near the region (C), the distal region (D) four areas; (D) in the near surface region (C), the distal region coated with hydroxyapatite / tetragonal zirconia composite ceramic coating, lingual area (a), buccal region (B) is coated with a hydroxyapatite coating; male screw thread of the body portion (2) top (2a) and thread bottoms (2b) are curved, two curved sliding connection, the radius of curvature of the arcuate thread crest (2a) of the body portion (2) the radius 1 / 4-1 / 6 , the radius of the arc of the thread crest (2a) of the thread bottom (2b) of the radius of the arc 1 / 3-1 / 4. 该种植体的抗微动损伤性能好,牙种植体的成功率高,使用寿命长。 The implant fretting damage good performance, high success rate of dental implants, long service life.

Description

一种抗微动损伤的骨内牙种植体 An anti-fretting damage dental implant in the bone

技术领域 FIELD

[0001] 本发明涉及一种口腔修复用的牙种植体,尤其涉及一种骨内牙种植体。 [0001] The present invention relates to an oral prosthetic dental implants, particularly to the dental implant for a bone. 背景技术 Background technique

[0002] 由于疾病、外伤及自然衰老等原因,仅中国就有数亿患者需要接受口腔修复治疗。 [0002] due to disease, trauma and natural aging, etc., in China alone, hundreds of millions of patients in need of dental treatment. 目前主要的修复方式是采用种植牙进行修复。 At present, the repair method is the use of dental implants to repair. 种植牙中固定效果好、使用广泛的是骨内种植牙。 Dental Implant fixed good effect, widely used implant in the bone. 骨内种植牙由植入人体颂骨内起支持固位作用的牙种植体和承担咀嚼作用的牙冠两部分组成。 With effect from implant bone implanted in the body of the mandible support the retention of dental implants and assume the role of chewing role of the crown of two parts. 种植时,先将纯钛等金属制成的圆柱形带外螺纹的牙种植体植入到牙槽骨内,牙种植体与牙槽骨之间通过螺纹配合相互连接,在与骨紧密融合后(一般约为3个月),再在牙种植体的颈部上面的基桩上镶嵌牙冠,以模拟和发挥真牙的生理功能。 Planting dental implants, made of a first cylindrical externally threaded metal such as titanium implant into the alveolar bone, the connection between the dental implant and the alveolar bone to each other by threaded engagement, with the bone in close integration (usually about three months), and then mounted on the neck above the crown dental implant pile, its physiological role and to simulate natural teeth.

[0003] 骨内种植牙在使用过程中,伴随着牙冠的咀嚼,种植体受力将在牙槽骨内产生微动。 [0003] Implant bone during use, with the chewing crown, implant micro force generated in the alveolar bone. 由于与种植体颈部相连的牙槽骨的皮质骨组织的各向异性的特点,在各个方向上对微动损伤的反应行为不同。 Because of the anisotropic characteristics of the implant and cortical bone tissue attached to the neck portion of the alveolar bone, in the respective directions different reaction behavior of fretting damage. 皮质骨组织在舌侧和颊(唇)侧方向上的耐微动损伤的性能优于近中和远中方向(即牙种植体与邻牙相邻的两侧方向,其中靠近面部中线的为近中方向, 远离面中线的方向为远中方向)。 Resistant properties of cortical bone tissue on fretting damage (lip) side and buccal lingual direction than mesial and distal directions (i.e., a lateral direction with adjacent teeth adjacent to the dental implant, wherein the portion close to the center line mesial direction, a direction away from the midline for the distal direction). 而现有的牙种植体颈部的周向表面结构相同,力学性能相同,无法与其直接接触的皮质骨组织的各向异性特性匹配,从而导致种植体周转的皮质骨较易出现微动损伤,且不匹配区域的损伤程度更为严重,严重影响种植牙的使用寿命。 Zhou conventional dental implant neck of the surface of the same structure, the same mechanical properties, the anisotropic properties of cortical bone tissue in direct contact therewith can not be matched, resulting in cortical bone turnover implant fretting damage easily occurs, It does not match the extent of damage to the region's more serious, seriously affect the life of the implant.

[0004] 另一方面,由于现有的牙种植体的螺纹形状为三角形、锯齿形等带有直线转折的形状,导致种植体的体部与牙槽骨的松质骨之间的连接界面出现平面,这些平面接触的区域在种植体受力时易产生沿连接平面方向的切向微动,从而导致骨组织出现犁沟损伤和剥层破坏;同时连接平面之间的尖锐的转折部位,也容易形成应力集中,而形成剪切损伤,加速牙种植体的松动和失效。 [0004] On the other hand, since the thread form is a conventional dental implant triangular shape with straight turn, zigzag, etc., resulting in the connection interface between the body portion and the cancellous bone of the alveolar bone implant appears plane, the planar contact area of ​​the implant is easy to produce when the force in the tangential direction to the connecting plane of the jog, causing damage to the bone tissue occurs furrow and delamination damage; simultaneous connections sharp transition between the planar portion, and stress concentration is easy to form a shear damage and accelerated loosening and failure of the dental implant.

发明内容 SUMMARY

[0005] 本发明的目的就是提供一种抗微动损伤的牙种植体,该种植体的抗微动损伤性能好,牙种植体的成功率高,使用寿命长。 [0005] The object of the present invention is to provide an anti-fretting damage the dental implant, the implant fretting damage performance is good, the dental implant success rate, and long service life.

[0006] 本发明实现其发明目的,所采用的技术方案是:一种抗微动损伤的骨内牙种植体, 由基桩、颈部和有外螺纹的体部构成,其结构特点是: [0006] The present invention achieves its object the invention, technical solutions are adopted: endosseous dental implants of an anti-fretting damage, consisting of foundation piles, neck and body portion with an external thread, which structure is characterized by:

[0007] 所述种植体的颈部的周面分为舌侧区、颊侧区、近中区、远中区四个区域;近中区、 远中区表面涂覆有羟基磷灰石/四方氧化锆复合陶瓷涂层,舌侧区、颊侧区涂覆有羟基磷灰石涂层; [0007] The circumferential surface of the neck portion of the implant region into four areas lingual, buccal region, near the region, a distal region; mesial region, a distal region surface is coated with a hydroxyapatite / tetragonal zirconia composite ceramic coating, lingual area, buccal region coated with a hydroxyapatite coating;

[0008] 所述的体部的外螺纹的螺纹牙顶和螺纹牙底均为弧形,两个弧形平滑连接,螺纹牙顶的弧形的曲率半径为体部半径的1/6-1/4,螺纹牙底的弧形半径为螺纹牙顶的弧形半径的1/4-1/3。 [0008] The body portion of the male screw thread crest and the thread bottoms are arc smoothly connecting two curved, the radius of curvature of the arcuate top thread to the radius of the body 1 / 6-1 / 4, the thread radius of the arc of radius of the arc of the bottom thread top 1 / 4-1 / 3.

[0009] 与现有技术相比,本发明的有益效果是: [0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 一、将种植体的颈部周面分为四个区,并使靠近舌侧和颊(唇)侧的表面涂覆有人工骨材料一羟基磷灰石层,而使得种植体颈部的舌、颊方向的力学特性与皮质骨在该方向上的力学特性一致。 [0010] First, the neck portion of the circumferential surface of the implant is divided into four areas, and close to the lingual side and buccal (lip) side of the surface is coated with a layer of hydroxyapatite bone material of one, such that the implant neck tongue, mechanical properties and consistent mechanical properties of cortical bone in the direction of the buccal direction. 同样,在近中区和远中区涂覆有羟基磷灰石/四方氧化锆复合陶瓷涂层,实现了牙种植体颈部的分区设计,使得种植体颈部的近、远中方向的力学特性也与皮质骨在该方向上的力学特性一致。 Similarly, in the near region and far region coated with the hydroxyapatite / tetragonal zirconia composite ceramic coating, to achieve a dental implant neck design partition, such that the neck near the implant, the mechanical distal direction characteristics are consistent with the mechanical properties of cortical bone in this direction. 这样使得种植体的颈部的各向力学特性与牙槽骨的皮质骨组织各向力学特性相匹配,提高了牙种植体的抗微动损伤的能力。 Such that the neck portion of each respective match the mechanical properties of the implant and cortical bone tissue of alveolar bone to the mechanical properties, enhance the ability of the dental implant fretting damage.

[0011] 二、由于牙种植体体部的外螺纹顶部和底部均为弧形,两个弧形平滑连接,从而使牙种植体与其周围接触的骨组织的连接界面全为弧形界面,种植体受力时不易产生切向微动;同时,弧形界面可以使种植体表面获得更大的表面积,既增加骨整合的面积,也使接触区的应力减少;并且,两个弧形界面平滑连接,无转折的过渡面(线),避免形成应力集中, 大大减小了连接界面处的微动损伤,从而具有很强的抗微动损伤的能力,牙种植体的成功率和使用寿命明显提高。 [0011] Second, since both the top and bottom arcuate outer thread portion of the dental implant body, two curved smoothly connected, so that the connection interface of the bone tissue in contact therewith all around Dental Implant arcuate interface, planting body less likely to occur when the jog tangential force; the same time, the arcuate surface of the interface can be made greater surface area of ​​the implant, both to increase the area of ​​osseointegration, but also to reduce the stress of the contact region; and, two arcuate smooth interface connection, no turning of the transition surface (line), to avoid stress concentration, a fretting damage is greatly reduced at the connection interface, which has strong ability to fretting damage, dental implant success rate and service life significantly improve.

[0012] 上述的种植体的体部的表面粗糙度为18-25 μ m。 [0012] surface of the body portion of the implant a roughness of 18-25 μ m.

[0013] 上述的种植体的体部的表面采用酸蚀方法形成孔隙半径为5-15 μ m的微孔。 [0013] surface of the body of the implant using the etching method for forming the pore radius is 5-15 μ m microporous.

[0014] 表面的这种微米级的粗糙度和微孔,有利于种植体与牙槽骨间的整合,二者结合更加牢固可靠,进一步提高抗微动损伤的能力。 [0014] Such microporous surface roughness and micron-sized, conducive to the integration between the implant and the alveolar bone, more solid and reliable combination of both, to further improve the resistance to fretting damage.

[0015] 下面结合附图和具体实施方式对本发明作进一步详细的说明。 [0015] The present invention will be further described in detail in conjunction with accompanying drawings and specific embodiments.

附图说明 BRIEF DESCRIPTION

[0016] 图1是本发明实施例的主视结构示意图。 [0016] FIG. 1 is a schematic front view of the structure of an embodiment of the present invention.

[0017] 图2是图1去掉基桩后的俯视结构示意图。 [0017] FIG. 2 is a schematic top view of the structure of FIG 1 after removing the pile group.

具体实施方式 Detailed ways

[0018] 实施例 [0018] Example

[0019] 图1、图2示出,一种抗微动损伤的骨内牙种植体,由基桩3、颈部1和有外螺纹的体部2构成,其中,种植体的颈部1的周面分为舌侧区A、颊侧区B、近中区C、远中区D四个区域;近中区C、远中区D表面涂覆有羟基磷灰石/四方氧化锆复合陶瓷涂层,舌侧区A、颊侧区B涂覆有羟基磷灰石涂层。 [0019] FIG 1, FIG 2 shows a fretting damage endosseous dental implants, 3, the body portion 1 and the neck portion has an external thread 2 formed of foundation piles, wherein the neck portion of the implant 1 lingual surfaces is divided into circumferential zones a, buccal region B, region near the C, D four regions distal region; mesial region C, D surface coating in the far region hydroxyapatite / tetragonal zirconia composite ceramic coating, lingual region A, region B buccal coated with a hydroxyapatite coating.

[0020] 本发明的舌侧区A为牙种植体颈部靠近舌侧的区域;颊侧区B为牙种植体颈部靠近脸颊或嘴唇的区域,对于口腔中部的牙种植体其颊侧区B也可叫唇侧区;近中区C和远中区D则为牙种植体颈部与邻牙相邻的两侧区域,其中靠近面部中线的区域为近中区C,远离面部中线的区域为远中区D。 [0020] A lingual area of ​​the dental implant according to the present invention is close to the lingual side of the neck area; buccal region B of the dental implant neck region near the cheek or lips, oral implants for dental central region thereof buccal B may also be called labial region; mesial distal region C and region D, compared with the dental implant regions on both sides with adjacent teeth adjacent to the neck portion, wherein the center line of the region near the surface in the near region C, away from the midline of the face area in the far zone D.

[0021] 种植体的体部2的外螺纹的螺纹牙顶加和螺纹牙底2b均为弧形,两个弧形平滑连接,螺纹牙顶加的弧形的曲率半径为体部2半径的1/6-1/4,螺纹牙底2b的弧形半径为螺纹牙顶加的弧形半径的1/4-1/3。 [0021] The male screw thread of the implant body 2 and the top plus bottom thread 2b are curved, two curved sliding connection, plus the thread crest radius of curvature of the arc of the radius of the body portion 2 1 / 6-1 / 4, the arc radius of the thread bottom 2b of the thread crest of the radius of the arc of plus 1 / 4-1 / 3.

[0022] 本例中的种植体的体部2的表面粗糙度为18-25 μ m。 [0022] surface of the body portion 2 of the implant according to the present embodiment, a surface roughness of 18-25 μ m. 种植体的体部2的表面采用酸蚀方法形成孔隙半径为5-15 μ m的微孔。 Portion of the surface of the implant body 2 is formed using a method of etching the pore radius is 5-15 μ m microporous.

[0023] 本发明的孔隙可采用各种现有的酸蚀方法形成,如:将Ti种植体放入低浓度的HF/HN03溶液中进行酸蚀,形成大量纳米级孔洞。 [0023] The porogens of the present invention can be formed of various conventional etching methods, such as: Ti implant into the low concentration of HF / HN03 acid etching solution to form a large number of nanopores. 然后放入高浓度的HF/HN03溶液中进行处理,再经HCL和H2SO4混合液酸蚀后,即可形成大量5-15 μ m的孔洞。 Then placed in a high concentration of HF / HN03 solution for treatment, and then a mixture of HCL and H2SO4 after etching, a large number of holes can be formed of 5-15 μ m. 形成孔洞后的种植体再进行表面钝化,即用H2A法处理,即得到表面钝化的锐钛矿晶相结构的TiA层。 After the formation of holes and then implant surface passivation, i.e., treated with H2A method, TiA layer to obtain anatase phase structure surface passivation. [0024] 本发明的种植体颈部1在表面涂覆羟基磷灰石涂层和羟基磷灰石/四方氧化锆复合陶瓷涂层的方法,可采用各种现有的在金属表面涂覆无机材料涂层的方法,如电化学沉积、超声波雾化喷涂、磁控溅射等方法均可在牙种植体颈部周围表面形成良好的涂层。 [0024] The neck of the implant of the present invention is coated on the surface of hydroxyapatite, and hydroxyapatite coating methods / tetragonal zirconia composite ceramic coating, various conventional inorganic coated metal surface the method of coating materials, such as electrochemical deposition, spraying ultrasonic atomization, magnetron sputtering method can form a good coating around the neck surface of the dental implant.

Claims (3)

1. 一种抗微动损伤的骨内牙种植体,由基桩(3)、颈部(1)和有外螺纹的体部(2)构成,其特征在于:所述种植体的颈部⑴的周面分为舌侧区(A)、颊侧区(B)、近中区(C)、远中区⑶四个区域;近中区(C)、远中区(D)表面涂覆有羟基磷灰石/四方氧化锆复合陶瓷涂层,舌侧区(A)、颊侧区(B)涂覆有羟基磷灰石涂层;所述的体部O)的外螺纹的螺纹牙顶Oa)和螺纹牙底Ob)均为弧形,两个弧形平滑连接,螺纹牙顶Oa)的弧形的半径为体部(¾半径的1/6-1/4,螺纹牙底Qb)的弧形半径为螺纹牙顶Oa)的弧形半径的1/4-1/3。 An endosseous dental implant fretting damage, (3), the neck portion (1) and a body portion with an external thread (2) consists of foundation piles, wherein: the neck of the implant ⑴ lingual surfaces is divided into a peripheral region (a), buccal region (B), near the region (C), the distal region ⑶ four regions; mesial region (C), (D) coating the surface of the distal region coated with hydroxyapatite / tetragonal zirconia composite ceramic coating, lingual area (a), buccal region (B) is coated with a hydroxyapatite coating; said threaded body portion O) of the external thread crest Oa) and thread bottoms Ob) are arc-shaped, two curved sliding connection, the thread crests Oa) of the arcuate portion radius (radius of ¾ to 1 / 6-1 / 4, the end of the thread 1 / 4-1 / 3 of the radius of the arc of the thread crest Oa) of QB) of the radius of the arc.
2.根据权利要求1所述的一种抗微动损伤的骨内牙种植体,其特征在于:所述的种植体的体部的表面粗糙度为18-25 μ m。 An anti according to claim 1 fretting damage the dental implant in the bone, characterized in that: the body portion of the surface roughness of the implant 18-25 μ m.
3.根据权利要求1所述的一种抗微动损伤的骨内牙种植体,其特征在于:所述的种植体的体部的表面采用酸蚀方法形成孔隙半径为5-15 μ m的微孔。 3. An anti according to claim 1 jog endosseous dental implant damage, wherein: the body portion of the surface of the implant is formed using a method of etching the pore radius of 5-15 μ m micropores.
CN 200910216189 2009-11-10 2009-11-10 An anti-fretting damage dental implant in the bone CN101732098B (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1044219A (en) 1988-12-10 1990-08-01 Imz制造和牙齿工艺贸易有限公司 Implantable fixing means for extraoral applications
CN1735387A (en) 2002-12-13 2006-02-15 斯特凡·诺伊迈尔 Abutment for a dental implant, dental implant comprising such an abutment, and method for the production of dentures by means of said dental implant

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1044219A (en) 1988-12-10 1990-08-01 Imz制造和牙齿工艺贸易有限公司 Implantable fixing means for extraoral applications
CN1735387A (en) 2002-12-13 2006-02-15 斯特凡·诺伊迈尔 Abutment for a dental implant, dental implant comprising such an abutment, and method for the production of dentures by means of said dental implant

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