Osseointegrated implants for prosthetic rehabilitation of the edentulous patient show high success rates if certain preconditions are fulfilled. Implant stability plays a critical role for a successful critical outcome since short implants and implants placed in soft bone are more prone to failure (13, 49). In the original protocols for implant placement, primary implant stability was ensured b...

PURPOSE: The quality of a prostate brachytherapy implant depends on the accurate placement of sources. This study quantifies the misplacement of iodine-125 sources from the intended location using intra-operative ultrasound images. METHOD AND MATERIALS Iodine-125 sources were manually identified in the post-implant ultrasound images and compared to the pre-operative plan. Due to the subjective ...

the purpose of this study was to determine the influence of platform switching on stress distribution of two different implant systems using three-dimensional (3d) finite element models.six 3d finite element models were created to replicate two different implant systems with peri-implant bone tissue, in which six different implant-abutment configurations were represented: model xive-a: 3.8-mm-d...

In this study a methodological approach for measuring temperature and local absorption rate (SAR) on thin metallic structures, such as pacemaker (PM) leads, is provided. First preliminary experiments were performed to evaluate the error in temperature and SAR measurements made by fluoroptic temperature probes when the temperature probe is in different contact configuration with the PM lead tip....

BACKGROUND The orbitocranial approaches are now indispensible for treating lesions of the skull base, providing access to lesions in the anterior and middle cranial fossae, as well as the upper clivus and anterior brainstem. The management of infectious complications of the orbitocranial approaches, however, has evaded the literature. CASE DESCRIPTION We present two cases of patients who unde...

Different strategies are known to improve implant primary stability (PS) and the bone-to-implant contact in post-extractive conditions, such as macro-geometry of screws apical threads, which can enhance mechanical characteristics. In any case, role area design maintaining or improving PS, especially low-quality bone, still remains unclear. Thus, present study aimed at evaluating vitro Insertion...

Electrical stimulation of auditory nerve fibers by cochlear implant electrodes has been an approved clinical practice to restore the hearing sensation in profoundly deaf people. Profound deafness is largely attributed to the loss of hair cells and subsequent decay of peripheral processes of auditory nerve fibers in the cochlea. In such pathological condition, spiral ganglion cells (SGN) which a...

The etiologies and mechanisms of implant failure are multifactorial. Implant periapical lesion (IPL) is one possible cause of implant failure. IPL is an infectious-inflammatory alterations surrounding an implant apex. The diagnosis is based on the clinical manifestations and radiological findings, where a radiolucent lesion can be seen in the periapical area. It is apparent that IPL has a multi...

Implant constructs supporting angiogenesis are favorable for treating critically-sized bone defects, as ingrowth of capillaries towards the center of large defects is often insufficient. Consequently, the insufficient nutritional supply of these regions leads to impaired bone healing. Implants with specially designed angiogenic supporting geometry and functionalized with proangiogenic cytokines...