中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (5): 657-663.doi: 10.12307/2023.984

• 组织工程口腔材料 tissue-engineered oral materials •    下一篇

三种咬合关系中树脂陶瓷冠和二氧化锆全瓷冠种植修复的生物力学差异

代慧娟,王钊鑫,白布加甫·叶力思,孙江伟,古丽再努·依不拉音,尼加提·吐尔逊   

  1. 新疆医科大学第二附属医院口腔科,新疆维吾尔自治区乌鲁木齐市  830063
  • 收稿日期:2022-12-26 接受日期:2023-02-04 出版日期:2024-02-18 发布日期:2023-08-16
  • 通讯作者: 尼加提·吐尔逊,主任医师,副教授,新疆医科大学第二附属医院口腔科,新疆维吾尔自治区乌鲁木齐市 830063
  • 作者简介:代慧娟,女,1994年生,山东省菏泽市人,汉族,新疆医科大学在读硕士,主要从事口腔种植修复学研究。
  • 基金资助:
    新疆维吾尔自治区自然科学基金项目(2016D01C192),课题名称:维药买朱尼对种植体周围炎龈沟液中IL-β1以及骨界面改建影响的实验研究,项目负责人:尼加提·吐尔逊

Biomechanical difference between resin ceramic crown and zirconia all-ceramic crown implant restorations in three occlusal relationships

Dai Huijuan, Wang Zhaoxin, Baibujiafu·Yelisi, Sun Jiangwei, Gulizainu·Yibulayin, Nijiati·Tuerxun   

  1. Department of Stomatology, Second Affiliated Hospital of Xinjiang Medical University, Urumqi 830063, Xinjiang Uygur Autonomous Region, China
  • Received:2022-12-26 Accepted:2023-02-04 Online:2024-02-18 Published:2023-08-16
  • Contact: Nijiati·Tuerxun, Chief physician, Associate professor, Department of Stomatology, Second Affiliated Hospital of Xinjiang Medical University, Urumqi 830063, Xinjiang Uygur Autonomous Region, China
  • About author:Dai Huijuan, Master candidate, Department of Stomatology, Second Affiliated Hospital of Xinjiang Medical University, Urumqi 830063, Xinjiang Uygur Autonomous Region, China
  • Supported by:
    Natural Science Foundation of Xinjiang Uygur Autonomous Region, No. 2016D01C192 (to NT)

摘要:


文题释义:

美学区:广义上是指微笑时所暴露的牙及牙槽嵴部分,包括上颌前牙和前磨牙区。美学区的敏感区域在上颌前牙区,其中上颌中切牙做为最重要的标志,是美学修复的重点区域。与口腔的其他区域相比,上颌美学区因特殊位置与解剖结构、更高的美观要求,使其种植修复也更具有挑战性。
种植修复体:又名种植牙,是一种经外科手术方法将代替天然牙根的人工种植体植入骨组织,以此为基础行上部义齿修复,来达到修复缺失牙的目的,主要由种植体、修复基台、上部修复体和中央螺丝等结构组成,在行使功能时咬牙合力通过上述各结构传导并分布至周围骨组织。


背景:在美学区的种植修复中,二氧化锆逐渐成为最常用的上部修复体材料,并取得较好的临床效果。树脂陶瓷复合材料是一种新型的口腔修复材料,近年来开始尝试作为上部修复体材料应用于种植修复中,但目前对该材料在种植修复中应用的研究较少。

目的:在3种咬合关系中,对比树脂陶瓷冠和二氧化锆全瓷冠种植修复体修复上颌中切牙的生物力学差异。
方法:选取1例上颌中切牙行单冠种植修复患者的锥形束CT影像资料,运用Mimics 21.0软件提取上颌骨模型,将模型导入 Solidworks 2020软件,并建立牙冠、粘接剂、基台、中央螺丝、种植体等模型,装配完成构建出上颌中切牙单冠种植修复模型;在ANSYS Workbench 2021 R1软件中赋予模型材料属性参数(上部修复体材料分别为树脂陶瓷复合材料、二氧化锆)后,分别模拟3种咬合关系(对刃牙合、正常牙合、深覆牙合)进行加载,分析树脂陶瓷冠和二氧化锆全瓷冠种植修复模型应力分布情况。

结果与结论:①树脂陶瓷冠组和二氧化锆全瓷冠组种植修复模型在不同咬合关系中的应力集中区均分布于上部修复体加载点、基台与种植体连接处、种植体颈部及周围骨组织处,随着咬合关系由对刃牙合变为正常牙合、深覆牙合,两组中修复基台、中央螺丝、种植体、骨组织的等效应力峰值均逐渐减小;两组深覆牙合时上部修复体的等效应力峰值最高,二氧化锆全瓷冠对刃牙合时粘接剂层等效应力峰值最高,树脂陶瓷冠组深覆牙合时粘接剂层的等效应力峰值最高;②对刃牙合时,树脂陶瓷冠组粘接剂层、中央螺丝的等效应力峰值略小于二氧化锆全瓷冠组,两组上部修复体、修复基台、种植体、骨组织处的等效应力峰值无明显差别;正常牙合时,树脂陶瓷冠组上部修复体、粘接剂层、中央螺丝的应力峰值略小于二氧化锆全瓷冠组,两组修复基台、种植体、骨组织处的等效应力峰值无明显差别;深覆牙合时,树脂陶瓷冠组粘接剂、基台、中央螺丝的应力峰值大于二氧化锆全瓷冠组,两组上部修复体、种植体、骨组织的应力峰值无明显差别;③结果表明,上部修复体材料对种植体和骨组织应力分布无明显影响,对上部修复体、粘接剂、修复基台、中央螺丝应力分布有一定影响,但差别不大;咬合关系对种植修复体各结构和骨组织的应力分布均有明显影响;对刃牙合和正常牙合时,树脂陶瓷冠对应力有一定的缓冲作用。

https://orcid.org/0000-0002-2039-9069(代慧娟)

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料口腔生物材料纳米材料缓释材料材料相容性组织工程

关键词: 美学区, 种植修复体, 咬合关系, 上部修复体, 树脂陶瓷复合材料, 二氧化锆, 三维有限元, 应力

Abstract: BACKGROUND: In implant restoration in the aesthetic area, zirconium dioxide is gradually becoming the most commonly used upper restorative material and has achieved better clinical results. Resin-ceramic composite, a new type of dental restorative material, begins to try to be used as an upper restorative material in implant restoration, but there is less research on the application of this material in implant restoration.
OBJECTIVE: To compare the biomechanical differences between resin ceramic crowns and zirconia all-ceramic crown implant restorations in three occlusal relationships for restoring maxillary central incisors.
METHODS: The cone-beam CT image data of a patient with single-crown implant restoration of maxillary central incisor were selected, and the maxillary bone model was extracted by using Mimics 21.0 software, and the model was imported into Solidworks 2020 software. The crown, adhesive, abutment, central screw, and implant were modeled, and the model of single-crown implant restoration of maxillary central incisor was assembled. After giving the model material property parameters (resin-ceramic composite and zirconia for the upper restoration materials) in ANSYS Workbench 2021 R1 software, three occlusal relationships (edge-to-edge occlusion, normal overjet and deep overbite) were simulated and loaded to analyze the stress distribution of the resin-ceramic crown and zirconia all-ceramic crown implant restoration models.
RESULTS AND CONCLUSION: (1) The stress concentration areas in the implant restoration models of the resin-ceramic crown group and the zirconia all-ceramic crown group in different occlusal relationships were distributed in the upper restoration loading point, the abutment-implant connection, the implant neck and the surrounding bone tissue. As the occlusal relationship changed from the edge-to-edge to normal and deep overbite, the peak equivalent forces of the restorative abutment, central screw, implant, and bone tissue in both the resin-ceramic and zirconia all-ceramic crown groups gradually decreased. The highest peak equivalent forces were observed for the upper restorations in deep overbite. The zirconia all-ceramic crown group had the highest peak equivalent force in the adhesive layer in the edge-to-edge relationship, and the resin-ceramic crown group had the highest peak equivalent force in the adhesive layer in the deep overbite. (2) In the edge-to-edge occlusion, the peak equivalent force of the adhesive layer and central screw in the resin-ceramic crown group was slightly smaller than that in the zirconia all-ceramic crown group, and there was no significant difference between the two groups in the peak equivalent force at the upper restoration, restoration abutment, implant, and bone tissue. The peak stresses in the upper restoration, adhesive layer, and central screw of the resin-ceramic crown group were slightly less than those of the zirconia all-ceramic crown group at normal fit, and there were no significant differences between the two groups in the peak equivalent forces at the restoration abutment, implant, and bone tissue. In deep overbite, the peak adhesive, abutment, and central screw stresses were greater in the resin-ceramic crown group than in the zirconia all-ceramic crown group, with no significant differences in the upper restorations, implants, or bone tissue. (3) The results showed that the upper restorative material had no significant effect on the stress distribution of the implant and bone tissue, and had some effects on the stress distribution of the upper restoration, adhesive, restoration abutment, and central screw, but the difference was not significant. The occlusal relationship has a significant influence on the stress distribution in all structures and bone tissue of the implant restoration. The resin-ceramic crowns have a buffering effect on the stresses in the case of edge-to-edge and normal occlusion.

Key words: aesthetic zone, implant restoration, occlusal relationship, upper restoration, resin-ceramic composite, zirconium dioxide, three-dimensional finite element, stress

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