Tuzzolo Neto Henrique, Tuzita Alessandra Sayuri, Gehrke Sérgio Alexandre, de Vasconcellos Moura Renata, Zaffalon Casati Márcio, Mikail Melo Mesquita Alfredo
Dental School, Universidade Paulista-UNIP, São Paulo 04026-002, Brazil.
Biotechnology Department, Universidad Católica de Murcia, 11.100 Murci, Spain.
Materials (Basel). 2020 Apr 17;13(8):1888. doi: 10.3390/ma13081888.
This study aimed at performing a comparative analysis of the fracture resistance of implants, evaluating extra-narrow, narrow, and regular implants. Four groups containing 15 implants each were evaluated. Group 1 (G1): single-piece extra-narrow implants; Group 2 (G2): single-piece narrow implants; Group 3 (G3): Morse taper narrow implants with solid abutments; Group 4 (G4): Morse taper conventional implants with solid abutments. The implants were tested using a universal testing machine for their maximum force limit and their maximum bending moment. After obtaining the data, the Shapiro-Wilk, ANOVA, and Tukey ( < 0.05) statistical tests were applied. Samples from all the groups were analyzed by scanning electron microscopy and Groups 3 and 4 were analyzed by profilometry. The means and the standard deviation values for the maximum force limit (N) and the maximum bending moment (Nmm) were respectively: G1:134.29 N (10.27); G2:300.61 N (24.26); G3:360.64 N (23.34); G4:419.10 N (18.87); G1:1612.02 Nmm (100.6); G2:2945 Nmm (237.97); G3:3530.38 Nmm (228.75); G4:4096.7 Nmm (182.73). The groups behaved statistically different from each other, showing that the smallest diameter implants provided less fracture resistance, both in the tensile strength tests and in the maximum bending moment between all groups. Furthermore, single-piece implants, with 2.5 mm and 3.0 mm diameters, deformed in the implant body region area, rather than in the abutment region.
本研究旨在对种植体的抗折性进行比较分析，评估超窄、窄型和常规种植体。对四组每组15枚种植体进行评估。第1组（G1）：一体式超窄种植体；第2组（G2）：一体式窄种植体；第3组（G3）：带实心基台的莫氏锥度窄种植体；第4组（G4）：带实心基台的莫氏锥度常规种植体。使用万能试验机对种植体进行最大力极限和最大弯矩测试。获取数据后，应用夏皮罗-威尔克检验、方差分析和图基检验（<0.05）。对所有组的样本进行扫描电子显微镜分析，对第3组和第4组进行轮廓测量分析。最大力极限（N）和最大弯矩（Nmm）的均值和标准差分别为：G1：134.29 N（10.27）；G2：300.61 N（24.26）；G3：360.64 N（23.34）；G4：419.10 N（18.87）；G1：1612.02 Nmm（100.6）；G2：2945 Nmm（237.97）；G3：3530.38 Nmm（228.75）；G4：4096.7 Nmm（182.73）。各组之间在统计学上表现出差异，表明直径最小的种植体在拉伸强度测试和所有组之间的最大弯矩测试中提供的抗折性较低。此外，直径为2.5 mm和3.0 mm的一体式种植体在种植体主体区域发生变形，而非基台区域。
