نتایج جستجو برای: implant failures
تعداد نتایج: 85193 فیلتر نتایج به سال:
Background and Aims: Considering the great incidence of implant failures due to high stresses around implant and at bone-implant interfaces, the aim of this study was to compare the effects of three different implant-macro designs on the quantity and distribution pattern of stresses around implants.Materials and Methods: In this experimental in vitro study, three types of implants including Bio...
objective: whilst many questions and doubts still remain, today the use of dental im-plants has gained an increasing popularity amongst patients as well as dentists. the aim of this study is to analyze the survival rate in using such implants over a 10 year period. materials and methods: in this study, 3050 iti implants placed in 1000 patients with the mean age of 49.5 years (54.4% males and 44...
BACKGROUND Early failure in cemented total knee replacement (TKR) due to aseptic loosening is uncommon. A small number of early failures requiring revision were observed at one hospital due to observed cement-implant fixation failure. The purpose of this case series is to report and identify possible causes for these early failures. METHODS Between May 2005 and December 2010, 3048 primary TKR...
The aim of the study was to examine articles published on risk factors associated with early failure of dental implants. We conducted a search on PubMed for articles published between January 2000 and December 2009 using the keywords 'dental implants' and 'early failure'. Seven studies that specified the number of early failed implants and studied the associated risk factors were included. Earl...
PURPOSE Implant failures can be divided into early and late according to the timing of failure. The purpose of this study was to characterize and compare both types. PATIENTS AND METHODS A retrospective cohort study was conducted in 194 patients (98 men and 96 women) who presented after dental implant failures during a 6-year period (2000 to 2006). The patient served as the unit of analysis. ...
The idea of absolute anchorage has always been an elusive goal for clinicians. Orthodontic mini-implants or temporary anchorage devices allow tooth movements previously thought to be impossible or difficult. Although extensive literature exists on use of temporary anchorage devices, their failures have been hardly focused upon, especially implant fracture. The following case report describes su...
Metallic implants are widely used in the field of implantology, but there still problems leading to implant failures due weak osseointegration, low mechanical strength for implant, inadequate antibacterial properties, and patient satisfaction. Implant failure can be caused by bacterial infections poor osteointegration. To improve functionalization, many researchers focus on surface modification...
Active implant periapical lesion (IPL) is a rare lesion which has been reported as one of the causes of dental implant failures. Usually, an affected implant shows radiolucency in the apical area, while remaining clinically stable. IPL is often accompanied by symptoms of pain, swelling, tenderness, and fistulation. In this paper, we describe two cases of IPL with very unusual findings which led...
Nowadays total joint replacements are widely used in the world, so in average 800,000 joint surgeries are done yearly only in Europe and North America. However implant loosening is and remains as the major issue of all implant failures and therefore causes revision surgery procedures. Studies and experiments have identified poor fixation of implants most likely is the main cause of long term im...
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