Ultrasonic Oscillations for Conservative Retrieval of a Rare Fracture of Implant Healing Abutment

Abstract

Dental implants can be rendered useless because of complications related to implant components such as the fracture of abutment screw and prosthetic retaining screw. Removal of such fractured fragments is therefore deemed necessary for the sake of prosthetic restoration. This case report presents a rare incident of healing abutment fracture and details the stepwise and probably the most conservative clinical technique using ultrasonic oscillations for retrieval of fractured screw fragment without affecting the internal surface of the implant. The management was based on the fact that the screw, being an inclined plane, will unthread when subjected to continuous vibrations.

A novel technique to retrieve cold‐welded implant abutment: A case series

“…This can be achieved by following some specific principles such as placing an adequate number of implants with respect to the extent of the edentulous area, applying appropriate tightening torque as recommended by the manufacturer, applying a pretorque to ensure that implant components are fitted precisely, and removing the loosened screws instead of retightening them. In fact, regular follow‐ups play a key role to prevent screw loosening and fracture of implants …”

“…In fact, regular follow-ups play a key role to prevent screw loosening and fracture of implants. 12 However, when abutment fracture occurs, the remaining part must be removed gently in order not to damage the internal threads of the implant. This could be extremely difficult for the clinicians since no specific method has been introduced for this purpose.…”

“…In this situation, regardless of etiology, the remaining part must be removed without damaging the internal implant threads, which is a remarkably challenging task for clinicians. The condition is more complicated when the fracture is located at the internal hexagon joint of the abutments …”

“…The condition is more complicated when the fracture is located at the internal hexagon joint of the abutments. [6][7][8]12 Various methods have been introduced for easy retrieval of the retained component without damaging the internal surface such as ultrasonic tool under a liquid coolant, dental extraction forceps, casting self-made screwdriver, drilling instruments, submerging implants, or complete implant removal. 7,10 Search of the literature in PubMed and other databases revealed no universally acceptable technique for abutment retrieval.…”

İmplant Abutment Vi̇da Kiriklarinin Dental Operasyon Mi̇kroskobu Kullanilarak Çikartilmasi: Tekni̇k Tanitim≠

“…Kırık vidanın implant iç yüzeyine zarar verilmeden çıkartılması klinik açıdan büyük zorluk arz etmektedir. 16 Bu nedenle literatürde pek çok farklı yöntem belirtilmiştir 4,13-14 ve implant üreticilerine ait pek çok vida çıkarma seti kullanılabilmektedir. 17 Bu yöntem ve setlerin kullanımı zaman tüketimi açısından uygun değildir, bununla birlikte bu işlemler implant iç yüzeyine zarar verebilmektedir.…”