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Updated: Mar 3, 2026
An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
Published on: February 10, 2014
Comparative study of abutment screw loosening with or without adhesive material
Mahnaz Arshad1, Gholamreza Shirani2, Sina Refoua3
1Dental 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.
Purpose:
The purpose of this study was to achieve more retention and stability and to delay or prevent screw loosening.
Materials And Methods:
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.
Results:
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.
Conclusion:
There are significantly higher detorque values in the group with adhesive. It is recommended to make biocompatible adhesive to reduce screw loosening.
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