Arshad Mahnaz, Shirani Gholamreza, Refoua Sina, Rahimi Yeganeh Mohammadreza
Dental Implant Center, Dental Research Center, Dentistry Research nstitute, Tehran University of Medical Sciences and Department of Prosthodontics, School of Dentistry, Tehran University of Medical Science, Tehran, Iran.
Dental Implant Center, Dental research Center, Dentistry Research Institute, Tehran University of Medical Sciences and Department of Oral and Maxillofacial Surgery, School of Dentistry, Tehran University of Medical Science, Tehran, Iran.
J Adv Prosthodont. 2017 Apr;9(2):99-103. doi: 10.4047/jap.2017.9.2.99. Epub 2017 Apr 6.
The purpose of this study was to achieve more retention and stability and to delay or prevent screw loosening.
Twenty implants (Implantium 3.4 mm, Dentium, Seoul, Korea) were divided into 2 groups (n = 20). In the first group, an adhesive material was applied around the screw of the abutments (test group). In the second group, the screws are soaked in saliva (control group). All the screws were torqued under 30 N/cm, Then, the samples were gone through a cyclic fatigue loading process. After cyclic loading, we detorqued screws and calculated detorque value.
In comparison with the control group, all the implant screws in the test group were smeared with the adhesive material, showing significant higher detorque value.
There are significantly higher detorque values in the group with adhesive. It is recommended to make biocompatible adhesive to reduce screw loosening.
本研究的目的是实现更高的固位力和稳定性，并延迟或防止螺钉松动。
二十颗种植体（3.4毫米的Implantium，韩国首尔登腾公司）被分为两组（n = 20）。在第一组中，在基台螺钉周围涂抹一种粘结材料（试验组）。在第二组中，将螺钉浸泡在唾液中（对照组）。所有螺钉均在30 N/cm的扭矩下拧紧，然后，样本经历循环疲劳加载过程。循环加载后，我们松开螺钉并计算松拧扭矩值。
与对照组相比，试验组所有种植体螺钉均涂抹有粘结材料，显示出显著更高的松拧扭矩值。
使用粘结材料的组有显著更高的松拧扭矩值。建议制造生物相容性粘结材料以减少螺钉松动。
