نوع مقاله : مقاله مروری
نویسندگان
دستیار تخصصی، بخش پروتزهای دندانی، مرکز تحقیقات ایمپلنتهای دندانی، مرکز تحقیقات دندانی، دانشکده دندانپزشکی، دانشگاه علوم
چکیده
کلیدواژهها
عنوان مقاله [English]
Abstract:
Introduction: The internal screw connects the implant to the abutment and is essential for supporting the abutment and loading the prosthesis. The stability of this screw is supposed to determine the stability of the implant. If frequent loosening occurs and inadequate management is not provided, it may affect the success of the treatment and patient satisfaction, which can ultimately result in a screw fracture or even implant failure. Having a clear understanding of the causes and factors that contribute to screw-loosening can help clinicians make better decisions during treatment.
Description: Factors such as the type of implant-abutment connection, abutment and screw characteristics, prosthesis type, screw tightening techniques, torque value, cantilever expansion rate, tissue entrapment, microleakage, anti-rotational resistance characteristics, treatment process, and human factors can affect the rate of screw-loosening.
Conclusion: Factors such as parafunctional habits and insufficient specialist experience, use of inappropriate prostheses, long cantilever length, tissue entrapment, increasing the length of the collar, and the use of implants with external hexagon connection can be effective in increasing the incidence of screw loosening. On the other hand, creating anti-rotation resistance features can reduce the occurrence of screw loosening.
کلیدواژهها [English]