WO2010091568A1 - 带凸缘圆柱形加复合圆弧齿结构的口腔种植体装置 - Google Patents

带凸缘圆柱形加复合圆弧齿结构的口腔种植体装置 Download PDF

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Publication number
WO2010091568A1
WO2010091568A1 PCT/CN2009/073116 CN2009073116W WO2010091568A1 WO 2010091568 A1 WO2010091568 A1 WO 2010091568A1 CN 2009073116 W CN2009073116 W CN 2009073116W WO 2010091568 A1 WO2010091568 A1 WO 2010091568A1
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WO
WIPO (PCT)
Prior art keywords
implant
arc
tooth
thread
composite
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PCT/CN2009/073116
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English (en)
French (fr)
Inventor
周磊
殷纪疏
Original Assignee
威海威高生物技术有限公司
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Publication of WO2010091568A1 publication Critical patent/WO2010091568A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • 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
    • A61C8/0025—Self-screwing with multiple threads
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0066—Connecting devices for joining an upper structure with an implant member, e.g. spacers with positioning means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0068—Connecting devices for joining an upper structure with an implant member, e.g. spacers with an additional screw

Definitions

  • the present invention relates to stomatological implant restoration techniques, and more particularly to an oral implant system with a flanged cylindrical plus composite arc-tooth structure, including an implant and a matching abutment.
  • the object of the present invention is to overcome the deficiencies of the above prior art and to provide a novel and easy to use structure.
  • Oral implant device that has good anti-rotation effect, can withstand greater torque, has high stability, no gap, is not easy to loose, and can inhibit bone absorption.
  • An oral implant device with a flanged cylindrical plus composite arc tooth structure comprising an implant and a matching abutment, the implant being cylindrical, from the head, the neck, the middle section and
  • the tail is composed of a head with a flange on the head, a micro-thread on the outer surface of the neck, a main thread on the outer surface of the middle section, and a curved shape on the tail.
  • the flange of the implant head of the present invention is composed of a convex arc and a concave arc transition, and the upper side of the flange is a convex arc, the lower The side is a concave arc, the convex arc is favorable for contact with the soft tissue, and the concave arc is easy to contact with the bone tissue, and the convex amount of the flange relative to the outer diameter surface of the neck is between 0.15-0.4 mm, and the concave arc is mainly It is easy to contact with bone tissue, protect bone tissue, and play a smooth transition.
  • the micro-thread of the implant neck of the invention has a symmetrical 90-degree triangle shape, and the micro-thread will pass through the dense bone or the superficial bone after implantation, thereby increasing the bonding area with the bone tissue, which is smoother than the conventional one.
  • the surface area of the surface is more than doubled, which makes it easy for the implant dentist to make a custom-made hole.
  • the hole is simpler and easier to hold than the thread, so that the compact bone can be prevented from being excessively squeezed due to improper preparation of the hole. Caused planting failure.
  • the thread profile of the main thread on the surface of the middle section of the implant of the present invention is an asymmetrical trapezoid, with a side of 7-10 degrees oblique to the side of the neck and a radius of 0.3-0.4 mm near the side of the tail.
  • the arc, the pitch is between 0.7 2-1.2mm, which is an integral multiple of the micro-thread pitch, and the thread depth is distributed from the tail to the neck from deep to shallow, until the middle section is exited, and the cancellous bone in the alveolar bone Tightly bonded, and screwed into the tendon to produce proper bone compression.
  • the implant body of the invention is provided with a coupling hole and a connecting threaded hole combined with the base.
  • the coupling hole is composed of an inner conical surface and an inner cylindrical surface, and the inner cylindrical surface is provided with 2-4 inner composite arc teeth, and the inner composite circle
  • the cross-section boundary of the arc tooth is a rounded tooth shape contour composed of a plurality of arcs. Therefore, the inner cylindrical surface plus the inner composite arc tooth constitutes the inner composite arc-toothed cylinder surface, and its height is slightly higher.
  • the outer composite arc-toothed cylindrical surface on the abutment, the combination of the inner and outer composite arc-shaped teeth can realize the anti-rotation effect of the abutment, and can be used for the plate screwing during the implantation operation, and is used for the implant using the tool. Screw into the bone.
  • the abutment of the invention is provided with an outer conical surface and an outer cylindrical surface corresponding to the inner conical surface and the inner cylindrical surface on the implant, and the outer cylindrical surface is provided with an outer composite arc matched with the inner composite arc tooth Therefore, the outer cylindrical surface and the outer composite circular arc on the outer cylindrical surface constitute an outer composite circular arc-shaped cylindrical surface for inserting the abutment into the implant, oriented and tightly connected, and implanted After entering the alveolar bone, it is buried in the bone, and the abutment will protrude through the soft tissue.
  • the diameter of the abutment extension will be smaller than the diameter of the end surface of the implant head. This is the "platform conversion" structure, which can be reduced. Bone resorption after planting.
  • the beneficial effects of the invention are as follows: 1.
  • the micro-thread passes through the dense bone, which can increase the contact area with the bone, and is easy to customize, master and prepare the implantation hole to avoid excessive extrusion of the dense bone due to the small hole. Lead to species Plant failure.
  • the main thread penetrates into the cancellous bone and the depth of the thread is from shallow to deep. The proper bone extrusion effect can be obtained, which improves the initial stability and is beneficial to the later stability.
  • the optimized asymmetric trapezoidal main thread shape can reduce the lateral shear stress, and the optimized pitch can obtain better bone growth between the main thread. 4.
  • the conical surface between the implant and the abutment can achieve excellent sealing and stability.
  • the composite arc-toothed cylindrical surface between the implant and the abutment is not easy to deform, can withstand greater torque, and has excellent anti-rotation effect.
  • the platform conversion structure reduces or eliminates bone resorption.
  • Figure 1 is a schematic view showing the structure of an implant in the present invention.
  • Fig. 2 is a cross-sectional view taken along line A-A of Fig. 1.
  • Fig. 4 is a partial enlarged view of the portion C of Fig. 1.
  • Figure 5 is a schematic view showing the structure of a base in the present invention.
  • Figure 6 is a cross-sectional view taken along line D-D of Figure 5.
  • Figure 7 is a perspective view of a base in the present invention.
  • an oral implant device with a flanged cylindrical plus composite arc-tooth structure includes an implant and a matching abutment, the implant is cylindrical, and the head 1 , the neck 2, the middle section 3 and the tail part 4, the head 1 of the implant has a flange 7, the outer surface of the neck 2 is provided with a micro-thread 8, the outer surface of the middle section 3 is provided with a main thread 9, and the tail 4 is Curved surface.
  • the flange 7 of the implant head 1 of the present invention is composed of a convex arc and a concave arc transition, the upper side of the flange 7 is a convex arc, and the lower side is a concave arc, and the convex arc is favorable for contact with the soft tissue.
  • the concave arc is easy to contact with the bone tissue, and the protrusion of the flange relative to the outer diameter surface of the neck is between 0.15-0.4 mm, and the concave arc is mainly easy to connect with the bone tissue. Touch, protect bone tissue, and play a smooth transition.
  • the micro-thread 8 of the implant neck 2 of the present invention has a symmetrical 90-degree triangle shape, and the micro-thread will pass through the dense bone or the superficial bone after implantation, thereby increasing the bonding area with the bone tissue. , more than double the surface area of the traditional smooth surface, which makes it easy to customize the implant hole after implant surgery. It is simpler and easier to master than the thread. Therefore, it can avoid the production of dense bone due to improper preparation of holes. Over-squeezing causes planting to fail.
  • the thread of the main thread 9 on the surface of the intermediate section 3 of the implant of the present invention has an asymmetrical trapezoidal shape with a 7-10 degree oblique side near the neck side and a radius of 0.3 near the tail side.
  • the cancellous bone in the bone is tightly bound and produces a proper bone compression during screwing.
  • the implant of the present invention is provided with a coupling hole and a connecting screw hole 12 combined with the base.
  • the coupling hole is composed of an inner conical surface 10 and an inner cylindrical surface, and the inner cylindrical surface includes a short inner cylindrical surface 10 and an in-band composite circle.
  • the inner cylindrical surface 11 of the arc tooth and the inner cylindrical surface 11 of the inner composite arc tooth are provided with 2-4 inner composite arc teeth 13 to form an inner composite arc tooth cylindrical surface, and the inner composite circular tooth shape
  • the height of the cylinder is slightly higher than the outer composite arc-toothed cylinder on the abutment.
  • the base of the present invention is provided with a base cone 14 which is further provided with an outer conical surface 16 corresponding to the inner conical surface 6 on the implant and the inner cylindrical surface 11 of the inner composite arc tooth.
  • the outer cylindrical surface of the outer composite arc tooth is 7, and the outer cylindrical surface 17 of the outer composite circular arc tooth is provided with an outer composite circular arc tooth 18 which cooperates with the inner composite circular arc tooth 13, that is, constitutes
  • the outer composite arc-shaped cylindrical surface so that after the implant is implanted into the human alveolar bone, it is buried in the bone, and the circular arc surface 15 of the abutment will protrude through the soft tissue, and the abutment extends the implant
  • the diameter at the end face will be smaller than the diameter of the end face of the implant, ie the platform transition structure, which reduces bone suction after implantation.
  • the beneficial effects of the invention are as follows: 1.
  • the micro-thread passes through the dense bone, which can increase the contact area with the bone, and is easy to customize, grasp and prepare the implantation hole to avoid the dense bone caused by the small hole. Over-squeezing causes planting to fail.
  • the main thread penetrates into the cancellous bone and the depth of the thread is from shallow to deep. The proper bone extrusion effect can be obtained, which improves the initial stability and is beneficial to the later stability.
  • the optimized asymmetric trapezoidal main thread shape can reduce the lateral shear stress, and the optimized pitch can obtain better bone growth between the main thread.
  • the micro-flange of the head is easily implanted in the sputum, and it is easy to obtain the "in place" perception, and the proper extrusion of the implanted orifice further improves the initial stability.
  • the conical surface between the implant and the abutment can achieve excellent sealing and stability.
  • the composite arc-toothed cylindrical surface between the implant and the abutment is not easy to deform, can withstand greater torque, and has excellent anti-rotation effect.
  • the platform conversion structure reduces or eliminates bone resorption.

Description

说明书 带凸缘圆柱形加复合圆弧齿结构的口腔种植体装置 技术领域
[1] 本发明涉及口腔医学种植修复技术， 特别是一种带凸缘圆柱形加复合圆弧齿结 构的口腔种植体系统， 包括种植体和与之相配的基台。
背景技术
[2] 20世纪 60年代， 瑞典 Gothenburg大学的 B nemark教授进行了关于口腔种植材料 和骨-种植体界面的研究， 创立了钛金属的'骨结合'理论， 为现代口腔种植学的应 用奠定了理论基础。 口腔种植应用技术是现代口腔种植学中最主要的部分。 口 腔种植义齿的广泛幵展和应用解决了临床上牙齿缺失带来的一系列美观和功能 上的问题。
[3] 然而， 种植体的齿形抗旋转结构中的齿在手术中会因承受扭矩而产生局部变形
， 这使得基台就位吋遇到困难； 尖角形种植体外螺纹在种植体-骨结合面上受力 吋易产生切向力或剪切应力， 切应力会伤害骨组织进而引发多种问题； 种植修 复后的骨吸收发生， 等等。 这些都可能导致种植修复效果不理想或修复失败。 对发明的公开
技术问题
[4] 本发明的目的就是为了克服上述现有技术的不足， 提供一种结构新颖、 易使用
、 抗旋转效果好、 可承受更大扭矩、 稳定性高、 无间隙、 不易松动、 可抑制骨 吸收的口腔种植体装置。
技术解决方案
[5] 本发明可以通过如下措施达到：
[6] 一种带凸缘圆柱形加复合圆弧齿结构的口腔种植体装置， 包括种植体和与之相 配合的基台， 种植体呈圆柱形， 由头部、 颈部、 中间段和尾部组成， 种植体的 头部带有凸缘， 颈部外表面设有微螺纹， 中间段外表面设有主螺纹， 尾部呈弧 面形。
[7] 本发明种植体头部的凸缘由凸圆弧和凹圆弧过渡组成， 凸缘上边为凸圆弧， 下 边为凹圆弧， 凸圆弧有利于与软组织接触， 而凹圆弧则易与骨组织接触， 凸缘 相对于颈部外径表面的凸出量在 0.15-0.4mm间， 凹圆弧主要是易与骨组织接触， 保护骨组织， 另外起圆滑过渡的作用。
本发明种植体颈部的微螺纹的牙形为对称的 90度三角形， 微螺纹在植入后将穿 越密质骨或表层骨， 可增大与这部分骨组织的结合面积， 比传统的光滑表面的 表面面积增大一倍以上， 可使种植牙医手术吋易于定制种植孔洞， 比为螺纹而 制备孔洞简单且更易撑握， 故可避免因制备孔洞不当而使密质骨产生过度挤压 而导致种植失败。
本发明种植体的中间段表面上的主螺纹的螺纹牙形为不对称的梯形， 靠近颈部 一侧是 7-10度斜边， 而靠近尾部一侧则是半径为 0.3-0.4mm间的圆弧， 螺距在 0.7 2-1.2mm间， 是微螺纹牙距的整数倍， 且螺纹深度自尾部向着颈部由深渐浅分布 ， 直至退出中间段， 以与牙槽骨内的松质骨紧密结合， 并在旋入吋产生适当骨 挤压作用。
本发明种植体内部设有与基台结合的结合孔和连接螺纹孔， 结合孔由内圆锥面 和内圆柱面组成， 内圆柱面上设有 2-4个内复合圆弧齿， 内复合圆弧齿的横截面 边界是由多段圆弧组成的、 圆滑的齿形状轮廓， 因此， 内圆柱面加其上的内复 合圆弧齿就构成了内复合圆弧齿形柱面， 其高度稍高于基台上的外复合圆弧齿 形柱面， 内、 外复合圆弧齿相结合可实现基台的抗旋转效果， 并可在种植手术 中起板拧作用， 用于使用工具将种植体旋入骨内。
本发明基台上设有与种植体上的内圆锥面和内圆柱面对应配合的外圆锥面和外 圆柱面， 此外圆柱面上设有与内复合圆弧齿相配合的外复合圆弧齿， 因此， 外 圆柱面加其上的外复合圆弧齿就构成了外复合圆弧齿形柱面， 用于将基台插入 到种植体中、 定向和紧密连接固定， 另外， 种植体植入人的牙槽骨后， 被埋入 骨内、 基台将伸出穿过软组织， 则基台伸出处的直径将小于种植体头部端面的 直径， 这就是 "平台转换"结构， 它可减少种植后的骨吸收。
有益效果
本发明的有益效果是： 1、 微螺纹穿越密质骨， 可增大与骨的接触面积， 并易 于定制、 掌握和制备植入孔， 以避免因孔过小造成密质骨的过度挤压而导致种 植失败。 2、 主螺纹深入松质骨且螺纹深度由浅到深， 可获得适当的骨挤压效果 ， 提高初期稳定性并有利于后期稳定性。 3、 优化的非对称梯形主螺纹牙形可减 少横向切应力的产生， 而优化的螺距可获得更好的主螺纹牙间骨组织生长。 4、 头部微凸缘在植入吋， 极易获得"到位"感知， 及对植入孔口有适当挤压作用进一 步提高初期稳定性。 5、 种植体与基台间的圆锥面配合可获得极好的密封性和稳 定性。 6、 种植体和基台间的复合圆弧齿形柱面配合， 不易变形， 可承受更大的 扭力， 抗旋转效果极佳。 7、 平台转换结构可减少或消除骨吸收。
附图说明
[13] 图 1是本发明中种植体的一种结构示意图；
[14] 图 2是图 1的 A-A剖视图。
[15] 图 3是图 1的 B处局部放大图。
[16] 图 4是图 1的 C处局部放大图。
[17] 图 5是本发明中基台的一种结构示意图。
[18] 图 6是图 5的 D-D剖面图。
[19] 图 7是本发明中基台的一种立体示意图。
[20] 图中标记： 头部 1、 颈部 2、 中间段 3、 尾部 4、 端面 5、 内圆锥面 6、 凸缘 7、 微 螺纹 8、 主螺纹 9、 短内圆柱面 10、 带内复合圆弧齿的内圆柱面 11、 连接螺纹孔 1 2、 内复合圆弧齿 13、 基台圆锥 14、 圆弧面 15、 外圆锥面 16、 带外复合圆弧齿的 外圆柱面 17、 外复合圆弧齿 18。
本发明的最佳实施方式
[21] 下面结合附图对本发明作进一步说明。
[22] 如附图所示， 一种带凸缘圆柱形加复合圆弧齿结构的口腔种植体装置， 包括种 植体和与之相配合的基台， 种植体呈圆柱形， 由头部 1、 颈部 2、 中间段 3和尾部 4组成， 种植体的头部 1带有凸缘 7， 颈部 2外表面设有微螺纹 8， 中间段 3外表面 设有主螺纹 9， 尾部 4呈弧面形。
[23] 本发明种植体头部 1的凸缘 7由凸圆弧和凹圆弧过渡组成， 凸缘 7上边为凸圆弧 ， 下边为凹圆弧， 凸圆弧有利于与软组织接触， 而凹圆弧则易与骨组织接触， 凸缘相对于颈部外径表面的凸出量在 0.15-0.4mm间， 凹圆弧主要是易与骨组织接 触， 保护骨组织， 另外起圆滑过渡的作用。
[24] 本发明种植体颈部 2的微螺纹 8的牙形为对称的 90度三角形， 微螺纹在植入后将 穿越密质骨或表层骨， 可增大与这部分骨组织的结合面积， 比传统的光滑表面 的表面面积增大一倍以上， 可使种植牙医手术吋易于定制种植孔洞， 比为螺纹 而制备孔洞简单且更易掌握， 故可避免因制备孔洞不当而对密质骨产生过度挤 压而导致种植失败。
[25] 本发明种植体的中间段 3表面上的主螺纹 9的螺纹牙形为不对称的梯形， 靠近颈 部一侧是 7-10度斜边， 而靠近尾部一侧则是半径为 0.3-0.4mm间的圆弧， 螺距在 0 .72-1.2mm间， 是微螺纹牙距的整数倍， 且螺纹深度自尾部向着颈部由深渐浅分 布， 直至退出中间段， 以与牙槽骨内的松质骨紧密结合， 并在旋入吋产生适当 骨挤压作用。
[26] 本发明种植体内部设有与基台结合的结合孔和连接螺纹孔 12， 结合孔由内圆锥 面 10、 内圆柱面组成， 内圆柱面包括短内圆柱面 10和带内复合圆弧齿的内圆柱 面 11， 带内复合圆弧齿的内圆柱面 11上设有 2-4个内复合圆弧齿 13， 构成内复合 圆弧齿形柱面， 此内复合圆弧齿形柱面的高度要稍高于基台上的外复合圆弧齿 形柱面。
[27] 本发明基台上设有基台圆锥 14， 基台上还设有与种植体上的内圆锥面 6和带内 复合圆弧齿的内圆柱面 11对应配合的外圆锥面 16和带外复合圆弧齿的外圆柱面 1 7， 此带外复合圆弧齿的外圆柱面 17上设有与内复合圆弧齿 13相配合的外复合圆 弧齿 18， 也就是， 构成了外复合圆弧齿形柱面， 这样一来， 种植体植入人的牙 槽骨后， 被埋入骨内、 基台的圆弧面 15将伸出穿过软组织， 则基台伸出种植体 端面处的直径将小于种植体头部端面的直径， 即平台转换结构， 它可减少种植 后的骨吸。
[28] 本发明的有益效果是： 1、 微螺纹穿越密质骨， 可增大与骨的接触面积， 并易 于定制、 掌握和制备植入孔， 以避免因孔过小造成密质骨的过度挤压而导致种 植失败。 2、 主螺纹深入松质骨且螺纹深度由浅到深， 可获得适当的骨挤压效果 ， 提高初期稳定性并有利于后期稳定性。 3、 优化的非对称梯形主螺纹牙形可减 少横向切应力的产生， 而优化的螺距可获得更好的主螺纹牙间骨组织生长。 4、 头部微凸缘在植入吋， 极易获得"到位"感知， 及对植入孔口有适当挤压作用进一 步提高初期稳定性。 5、 种植体与基台间的圆锥面配合可获得极好的密封性和稳 定性。 6、 种植体和基台间的复合圆弧齿形柱面配合， 不易变形， 可承受更大的 扭力， 抗旋转效果极佳。 7、 平台转换结构可减少或消除骨吸收。

Claims

权利要求书
[1] 一种带凸缘圆柱形加复合圆弧齿结构的口腔种植体装置， 包括种植体和与 之相配合的基台， 种植体呈圆柱形， 由头部、 颈部、 中间段和尾部组成， 其特征在于种植体的头部带有凸缘， 颈部外表面设有微螺纹， 中间段外表 面设有主螺纹， 尾部呈弧面形。
[2] 根据权利要求 1所述的一种带凸缘圆柱形加复合圆弧齿结构的口腔种植体装 置， 其特征在于种植体头部的凸缘由凸圆弧面和凹圆弧面过渡组成。
[3] 根据权利要求 1所述的一种带凸缘圆柱形加复合圆弧齿结构的口腔种植体装 置， 其特征在于种植体颈部微螺纹的牙形为对称 90度三角形。
[4] 根据权利要求 1所述的一种带凸缘圆柱形加复合圆弧齿结构的口腔种植体装 置， 其特征在于中间段表面上的主螺纹的螺纹深度自尾部向着颈部由深渐 浅分布， 直至退出中间段， 螺纹牙形为不对称的梯形。
[5] 根据权利要求 4所述的一种带凸缘圆柱形加复合圆弧齿结构的口腔种植体装 置， 其特征在于主螺纹的螺纹牙形靠近颈部一侧是 7-10度斜边， 而靠近尾 部一侧则是半径为 0.3-0.4mm间的圆弧。
[6] 根据权利要求 4所述的一种带凸缘圆柱形加复合圆弧齿结构的口腔种植体装 置， 其特征在于主螺纹螺距在 0.72-1.2mm间， 是微螺纹牙距的整数倍。
[7] 根据权利要求 1所述的一种带凸缘圆柱形加复合圆弧齿结构的口腔种植体装 置， 其特征在于种植体内部设有与基台结合的结合孔和连接螺纹孔， 结合 孔由内圆锥面和内圆柱面组成， 内圆柱面上设有 2-4个内复合圆弧齿， 内复 合圆弧齿的横截面轮廓是由多段圆弧组成的圆滑的齿形结构， 基台上设有 与种植体上的内圆锥面和内圆柱面对应配合的外圆锥面和外圆柱面， 外圆 柱面上设有与内复合圆弧齿相配合的外复合圆弧齿。
[8] 根据权利要求 7所述的一种带凸缘圆柱形加复合圆弧齿结构的口腔种植体装 置， 其特征在于内复合圆弧齿和外复合圆弧齿的横截面轮廓是由多段圆弧 组成的圆滑齿面。
PCT/CN2009/073116 2009-02-13 2009-08-06 带凸缘圆柱形加复合圆弧齿结构的口腔种植体装置 WO2010091568A1 (zh)

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