Axial Push-out Resistance of Dental Implant Different Thread Designs
Mohamed Ahmed Alkhodary1,2*
1Associate Professor, Department of Prosthetic Dental Sciences, College of Dentistry, Qassim University, Saudi Arabia
2Professor of Prosthodontics, Faculty of Dentistry, Alexandria University, Egypt
*Corresponding Author: Mohamed Ahmed Alkhodary, Associate Professor, Department of Prosthetic Dental Sciences, College of Dentistry, Qassim University, Saudi Arabia and Professor of Prosthodontics, Faculty of Dentistry, Alexandria University, Egypt.
Received: May 02, 2023; Published: May 15, 2023
Introduction: According to some authors, there is a correlation between insertion torque of different dental implant thread designs and their axial push-out strength (PS), although other investigations have not found that to be true, accordingly this study aimed to test the effect of dental implant different thread designs on the PS of the dental implants/bone interface in a custom-made bone block using destructive mechanical testing.
Materials and Methods: Custom made dental implants were designed, manufactured, having 4 different thread designs, namely, V-shaped, buttress, reverse buttress, and trapezoid. The implants were inserted in a custom-made bone block and subjected to mechanical push-out testing and measurements were recorded and statistically analyzed.
Results: There was no statistically significant difference between the push-out force of the trapezoid and reverse buttress threads, and both had higher push-out force than those of V0shaped and buttress threads.
Conclusion: Since the insertion torque values for the T threads are generally known to be significantly higher than those of the other forms of studied threads, the trapezoid threads prove a positive relationship between insertion torque and axial push-out resistance of dental implants during destructive mechanical testing in ex-vivo natural bone samples.
Keywords: Dental Implant Thread Design, Axial Push-Out Test.
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