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Behavior of implant and abutment sets of three different connections during the non-axial load application: An in vitro experimental study using a radiographic method
Bio-Medical Materials and Engineering ( IF 1.0 ) Pub Date : 2021-09-06 , DOI: 10.3233/bme-211221
Sergio Alexandre Gehrke 1, 2 , Berenice Anina Dedavid 3 , José Manuel Granero Marín 4 , Luigi Canullo 5
Affiliation  

BACKGROUND:During the masticatory cycle, loads of different intensities and directions are received by the dental structures and/or implants, which can cause micromovements at the junction between the abutment and implant. OBJECTIVE:The objective of this in vitro study was to evaluate the behaviorof three different implant connections subjected to different load values using a digital radiography system. Additionally, the torque values for removing the abutment screws were also measured and compared. METHODS:Ninety sets of implant and abutment (IA) were used, divided into three groups according to the type of connection (n = 30 per group): EH group, external hexagon type connection; IH group, internal hexagon connection; and, MT group, Morse taper connection. RESULTS:MT group showed the better vertical misfit behavior at the three intensity of load applied, in comparison with EH and IH groups. In the analysis of torque maintenance (detorque test), MT group showed higher values of detorque when compared with the measured values of EH and IH groups (p < 0.001). CONCLUSIONS:The IA sets of EH and IH groups showed a microgap in all levels of applied loads, unlike the MT group this event was not observed. In the detorque test, MT group increase in the torque values when compared to the initial torque applied, unlike EH and IH groups showed a decrease in the initially torque applied in all conditions tested. A positive correlation was detected between the misfit and detorque values.

中文翻译:

非轴向载荷应用期间三种不同连接的种植体和基台组的行为:使用射线照相法的体外实验研究

背景:在咀嚼周期中,牙体结构和/或种植体承受不同强度和方向的载荷,会导致基台与种植体连接处发生微动。目的:这项体外研究的目的是使用数字射线照相系统评估三种不同的种植体连接在不同负载值下的行为。此外,还测量和比较了移除基台螺钉的扭矩值。方法:使用了 90 套种植体和基台 (IA),根据连接类型分为三组(每组 n = 30):EH 组,外六角型连接;IH组,内六角连接;和,MT组,莫氏锥度连接。结果:与 EH 和 IH 组相比,MT 组在施加的三种载荷强度下表现出更好的垂直错配行为。在扭矩维持分析(去扭矩测试)中,与 EH 和 IH 组的测量值相比,MT 组显示出更高的扭矩值(p < 0.001)。结论:EH 组和 IH 组的 IA 组在所有施加载荷水平上均显示出微间隙,与 MT 组不同,该事件未观察到。在去扭矩测试中,与施加的初始扭矩相比,MT 组的扭矩值增加,与 EH 和 IH 组不同,在所有测试条件下施加的初始扭矩均有所降低。在失配和去扭矩值之间检测到正相关。与 EH 和 IH 组的测量值相比,MT 组的扭矩值更高(p < 0.001)。结论:EH 组和 IH 组的 IA 组在所有施加载荷水平上均显示出微间隙,与 MT 组不同,该事件未观察到。在去扭矩测试中,与施加的初始扭矩相比,MT 组的扭矩值增加,与 EH 和 IH 组不同,在所有测试条件下施加的初始扭矩均有所降低。在失配和去扭矩值之间检测到正相关。与 EH 和 IH 组的测量值相比,MT 组的扭矩值更高(p < 0.001)。结论:EH 组和 IH 组的 IA 组在所有施加载荷水平上均显示出微间隙,与 MT 组不同,该事件未观察到。在去扭矩测试中,与施加的初始扭矩相比,MT 组的扭矩值增加,与 EH 和 IH 组不同,在所有测试条件下施加的初始扭矩均有所降低。在失配和去扭矩值之间检测到正相关。与施加的初始扭矩相比,MT 组的扭矩值增加,与 EH 和 IH 组不同,在所有测试条件下施加的初始扭矩均有所降低。在失配和去扭矩值之间检测到正相关。与施加的初始扭矩相比,MT 组的扭矩值增加,与 EH 和 IH 组不同,在所有测试条件下施加的初始扭矩均有所降低。在失配和去扭矩值之间检测到正相关。
更新日期:2021-09-07
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