A conservative approach to retrieve a fractured abutment screw - Case report

作者：Prado Naves Carneiro Thiago de Almeida; Prudente Marcel Santana; Sales e Pessoa Roberto; Mendonca Gustavo; das Neves Flavio Domingues

来源：Journal of Prosthodontic Research, 2016, 60(2): 138-142.

DOI：10.1016/j.jpor.2015.09.003

• Osseointegrated implant
• Screw fracture
• Implant re-tapping

Introduction: Regarding implant-supported prostheses, the most reported types of complications are related to loosening or fracturing of abutment or prosthesis screws. This case report shows a series of procedures that allowed a conservative solution for a fractured screw. It avoided removing the implant and also allowed the same prosthesis to be used after guided-drilling the fractured screw and re-tapping the implant internal threads. The same prosthesis was replaced immediately after the procedure.
Patient: A 67-year-old male patient, who had a fractured abutment screw of the lower left first molar implant. The patient decided for the conservative treatment option and an attempt was made to remove the fractured screw.
Discussion: Parafunctional habits can generate excessive occlusal forces, which are risk factors associated with loosening and fracturing implant screws and even the fixtures themselves. This case report focus on the probable causes, difficulties and risks associated with this procedure and it also discusses the alternative approaches.
Conclusion: The purposed treatment allowed a time and money saving resolution for fractured abutment screws.

• 出版日期2016-4