Removal capability, implant-abutment connection damage and thermal effect using ultrasonic and drilling techniques for the extraction of fractured abutment screws: an in vitro study

BMC Oral Health

Research

Javier Borrajo Sánchez¹  Jorge Hernández Rodríguez¹  Elena Riad Deglow²  Sofía Hernández Montero²  María Bufalá Pérez²  Álvaro Zubizarreta-Macho³  Jorge Alonso Pérez-Barquero⁴ 

[1] Department of Biomedical and Diagnostic Sciences, University of Salamanca, Salamanca, Spain;Department of Implant Surgery, Faculty of Health Sciences, Alfonso X El Sabio University, Avda. Universidad, 1., 28691, Villanueva de la Cañada, Madrid, Spain;Department of Implant Surgery, Faculty of Health Sciences, Alfonso X El Sabio University, Avda. Universidad, 1., 28691, Villanueva de la Cañada, Madrid, Spain;Department of Surgery, University of Salamanca, Salamanca, Spain;Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46010, Valencia, Spain;

关键词: Dental implants;    Fractured;    Screw-retained;    Abutment screw;    Dental prostheses;    Implant-supported protheses;   

DOI  :  10.1186/s12903-022-02653-w

 received in 2022-09-21, accepted in 2022-12-07,  发布年份 2022

来源: Springer

【 摘 要 】

The aim of this work was to analyze and compare the removal capability, conical internal hex implant-abutment connection damage and thermal effect using ultrasonic and drilling techniques for the extraction of fractured abutment screws. Twenty abutment screws were randomly fractured into twenty dental implants and randomly extracted using the following removal techniques: Group A: drilling technique without irrigation (n = 10) (DT) and Group B: ultrasonic technique without irrigation (n = 10) (UT). The dental implants were submitted to a preoperative and postoperative micro-computed tomography (micro-CT) scan to obtain a Standard Tessellation Language (STL) digital file that determined the wear comparison by morphometry. Moreover, the thermographic effects generated by the DT and UT removal techniques were registered using a thermographic digital camera. Comparative analysis was performed by comparing the volumetric differences (mm3) between preoperative and postoperative micro-CT scans and thermographic results (°C) using the Student t test. The DT extracted 8/10 and the US 9/10 abutment screws. The pairwise comparison revealed statistically significant differences between the volumetric differences of postoperative and preoperative micro-CT scans of the DT (− 0.09 ± − 0.02mm3) and UT (− 0.93 ± − 0.32mm3) study groups (p = 0.0042); in addition, the pairwise comparison revealed statistically significant differences between the thermographic values of the DT (38.12 ± − 10.82 °C) and UT (78.52 ± 5.43 °C) study groups (p < 0.001). The drilling technique without irrigation provides a less removal capability, less conical internal hex implant-abutment connection damage and less thermal effect than ultrasonic technique for the extraction of fractured abutment screws; however, the ultrasonic technique resulted more effective for the extraction of fractured abutment screws.

【 授权许可】

CC BY   
© The Author(s) 2022

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