Journal of Isfahan Dental School

The Effect of Cooling on the Loosening of the Abutment Screw in Bone Level Implants with Internal Hex in Different Implant System

Document Type : مقاله‌های پژوهشی

Authors

1 PhD, Student Research Committee, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran

2 Assistant Professor, Dental Implants Research Center, Dental Prosthodontics Department, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran

3 Assistant Professor, Dental Materials Research Center, Department of Prosthodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran

4 Postgraduate Student, Dental Students’ Research Committee, Department of Prosthodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran

Abstract

Introduction: One of the most prevalent difficulties and consequences following dental implant therapy is the loosening of the abutment screws. To reduce this complication, giving a reasonable solution that interferes with the therapy as little as possible can be critical. Thus, this study aims to investigate the effect of cold on abutment screw loosening in implants with internal hex done in different bone-level implant systems.
Materials and Methods: This study investigated bone-level implants and the degree of abutment screw loosening caused by cold. The implants were divided into three groups of 10 including (DIO) Korean, (ITI) Swiss, and (Paragon) American implants. The abutment of five samples was cooled with endo cold spray and 5 samples were torqued without cold. The detorque amount of these groups was measured after placing all abutments in a thermocycler undergoing 5000 cycles. After collecting the data, using the Covariance test, the data was examined at a significance level of 0.05.  
Results: The detorque rate of implants under the effect of cold was 26.22 ± 2.62 N/cm, and the group without cold was 25.46 ± 2.70 N/cm. There was a significant difference in detorque between bone level implants before and after cooling (p value < 0.05).
Conclusion: Cold is effective in increasing the detorque force of the abutment screw in implants with internal hex in different bone-level implant systems.
Keywords: Dental implants, Abutment, Temperature, Screw

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Journal of Isfahan Dental School
Volume 20, Issue 1 - Serial Number 1
May 2024
Pages 43-51