The objective of this study was to evaluate a new design of multifunctional abutment for Morse taper implant connections, relative to the retentive stability after the application of cyclic loads in cemented and screwed crowns. Multifunctional abutments with two different angulations in the seating portion of the crown were tested, forming 2 groups (n = 30 samples per group): Group Abut11, where Smart abutments with an angle of 11.42° were used; Group Abut5, where Ideale abutments with an angle of 5° were used. Fifteen samples from each group received cemented crowns (CC) and another fifteen screwed crowns (SC). All crown samples were subjected to the mechanical cycling test at 360,000 cycles at a frequency of 4 Hz and 150 N of the load. The samples with CC were subjected to the tensile test to remove the crowns, while in the samples with SC, the detorque value of the fastening crown screws was measured. The mean tensile strength value of CC in the Abut11 group was 131.9 ± 13.5 N and, in the Abut5 group was 230.9 ± 11.3 N; while the detorque mean value in samples with SC 5.8 ± 1.8 N for the Abut11 group and, 7.6 ± 1.1 N for Abut5 group. Significant statistical differences were found between the two groups in both situations tested (p < 0.05). The multifunctional abutments, presenting a lesser angulation of the crown-seating portion, showed higher values of retention of the CC and a lesser screw loosening of torque of the fixing screws in the SC after the application of cyclic loads when compared to the abutments with more angulation in the crown-seating portion.

这项研究的目的是相对于在水泥和螺钉冠中施加周期性载荷后的保持稳定性，评估一种用于莫尔斯锥度种植体连接的多功能基台的新设计。测试了在冠座部分有两个不同角度的多功能基台，分为2组（每组n = 30个样品）：Abut11组，其中使用了11.42°角度的智能基台；Abut5组，其中使用了5°角的Ideale基台。每组有15个样品分别获得胶合冠（CC）和另外15个螺丝冠（SC）。所有胎冠样品在4 Hz的频率和150 N的负载下进行了360,000次循环的机械循环测试。带有CC的样品经过拉伸测试以去除胎冠，而带有SC的样品中，测量紧固冠状螺钉的扭矩值。Abut11组CC的平均抗张强度值为131.9±13.5 N，Abut5组为CC的平均抗张强度值为230.9±11.3N。而Abut11组的SC 5.8±1.8 N和Abut5组的7.6±1.1 N的样品的扭矩平均值。在两种测试情况下，两组之间均存在显着的统计学差异（p <0.05）。与承受更大载荷的基台相比，多功能基台具有较小的冠状座部分角度，显示出较高的CC保持力值和施加周期性载荷后SC中固定螺钉的扭矩松动较小。冠座部分的角度。Abut11组CC的平均抗张强度值为131.9±13.5 N，Abut5组为CC的平均抗张强度值为230.9±11.3N。而Abut11组的SC 5.8±1.8 N和Abut5组的7.6±1.1 N的样品的扭矩平均值。在两种测试情况下，两组之间均存在显着的统计学差异（p <0.05）。与承受更大载荷的基台相比，多功能基台具有较小的冠状座部分角度，显示出较高的CC保持力值和施加周期性载荷后SC中固定螺钉的扭矩松动较小。冠座部分的角度。Abut11组CC的平均抗张强度值为131.9±13.5 N，Abut5组为CC的平均抗张强度值为230.9±11.3N。而Abut11组的SC 5.8±1.8 N和Abut5组的7.6±1.1 N的样品的扭矩平均值。在两种测试情况下，两组之间均存在显着的统计学差异（p <0.05）。与承受更大载荷的基台相比，多功能基台具有较小的冠状座部分角度，显示出较高的CC保持力值和施加周期性载荷后SC中固定螺钉的扭矩松动较小。冠座部分的角度。在两种测试情况下，两组之间均存在显着的统计学差异（p <0.05）。与承受更大载荷的基台相比，多功能基台具有较小的冠状座部分角度，显示出较高的CC保持力值和施加周期性载荷后SC中固定螺钉的扭矩松动较小。冠座部分的角度。在两种测试情况下，两组之间均存在显着的统计学差异（p <0.05）。与承受更大载荷的基台相比，多功能基台具有较小的冠状座部分角度，显示出较高的CC保持力值和施加周期性载荷后SC中固定螺钉的扭矩松动较小。冠座部分的角度。