Comuzzi Luca, Romasco Tea, Mourão Carlos Fernando, Marchioli Giulia, Piattelli Adriano, Di Pietro Natalia
Independent Researcher, 31020 San Vendemiano, Italy.
Department of Medical, Oral and Biotechnological Sciences, "G. D'Annunzio" University of Chieti-Pescara, 66100 Chieti, Italy.
Bioengineering (Basel). 2025 Jan 9;12(1):53. doi: 10.3390/bioengineering12010053.
This study aimed to evaluate the biomechanical performance of two truncated cone implant designs in maxillary sinus lift (MSL) procedures using polyurethane laminas. A total of 128 implants were used. Polyurethane laminas were divided into two groups based on thickness (1 and 3 mm) and two subgroups based on density (20 and 30 pounds per cubic foot, PCF). Each subgroup tested two implants (Sinus-plant and Sinus Lift Concept: SLC), resulting in 8 experimental conditions and 16 implants per condition. The insertion torque (IT), removal torque (RT), and implant stability quotient (ISQ) were measured. SLC implants achieved significantly higher IT and RT across all tested conditions ( < 0.0001), reporting the highest values at the 30 PCF/3 mm lamina (IT: 34.09 ± 0.32 Ncm; RT: 32.15 ± 0.29 Ncm) and the lowest at the 20 PCF/1 mm lamina (IT: 11.86 ± 0.22 Ncm; RT: 10.28 ± 0.22 Ncm). Additionally, SLC implants achieved significantly higher ISQ values, ranging from around 61 to 48 ISQ. Notably, this difference was not significant at the 20 PCF/3 mm lamina, highlighting that bone density may play a more critical role than thickness for SLC implants. This study simulated the clinical condition of achieving primary stability even with extreme maxillary bone thickness. The findings indicate that while both implant designs can be utilized in MSL procedures, the SLC is particularly effective in scenarios with limited bone thickness and density, potentially allowing for simultaneous MSL, implant placement, and healing screw application.
本研究旨在评估两种截头圆锥种植体设计在上颌窦提升（MSL）手术中使用聚氨酯薄片时的生物力学性能。总共使用了128颗种植体。聚氨酯薄片根据厚度分为两组（1毫米和3毫米），并根据密度分为两个亚组（每立方英尺20磅和30磅，PCF）。每个亚组测试两颗种植体（Sinus-plant和上颌窦提升概念：SLC），产生8种实验条件，每种条件下有16颗种植体。测量了植入扭矩（IT）、取出扭矩（RT）和种植体稳定性商数（ISQ）。在所有测试条件下，SLC种植体的IT和RT均显著更高（<0.0001），在30 PCF/3毫米薄片时达到最高值（IT：34.09±0.32 Ncm；RT：32.15±0.29 Ncm），在20 PCF/1毫米薄片时达到最低值（IT：11.86±0.22 Ncm；RT：10.28±0.22 Ncm）。此外，SLC种植体的ISQ值显著更高，范围约为61至48 ISQ。值得注意的是，在20 PCF/3毫米薄片时这种差异不显著，这突出表明对于SLC种植体，骨密度可能比厚度起更关键的作用。本研究模拟了即使在上颌骨厚度极薄的情况下实现初期稳定性的临床状况。研究结果表明，虽然两种种植体设计均可用于MSL手术，但SLC在骨厚度和密度有限的情况下特别有效，可能允许同时进行MSL、种植体植入和愈合螺钉应用。
