Fig. 2From: Removal capability, implant-abutment connection damage and thermal effect using ultrasonic and drilling techniques for the extraction of fractured abutment screws: an in vitro studyA Cross-section view of the preoperative and B postoperative STL digital files after removing the fractured abutment screws with drilling technique without irrigation. C Cross-section view of the preoperative and D postoperative STL digital files after removing the fractured abutment screws with ultrasonic technique without irrigation. The red arrows indicate the areas of wearBack to article page