Methacrylate Threadlockers found best for Enhancing Abutment Screw Retention: Study
Researchers have found in a new study that threadlockers significantly improved abutment screw retention, with methacrylate outperforming dimethacrylate. Reduced detorque under cyclic loading emphasizes the need for improved retention strategies, and methacrylate-based threadlockers may help prevent screw loosening and improve long-term implant success.
A study was done to evaluate and compare the effects of different thread lockers on implant abutment screw loosening. Thirty implant-abutment assemblies were divided into 3 groups: Control group (without threadlocker), dimethacrylate group, and methacrylate group. Each group was subdivided into static and dynamic groups. The specimens were torqued to 35 Ncm, and detorque values were measured after 1 month in static conditions and after cyclic loading. The cyclic loading protocol involved 240,000 cycles at a velocity of 16 mm/s over a 48-h period in a moist environment, simulating 1 year of clinical function.
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