Introduction: Relatively high prevalence of facial deficiencies caused by trauma and the need for ablative surgeries in maxillofacial cancers, cause aesthetic and functional problems for patients which can be rehabilitated with surgery, Prosthesis or both of them. Prosthetic reconstruction for these patients has many advantages such as controlling wound healing, aesthetic, easy  and non expensive treatment. In this article the process for nose Prosthesis fabrication with silicon materials has been presented step by step.Results: A 49 year-old female patient with past medical history of diabetes mellitus that had rhino-cerebral mucormycosis following by diabetic coma and had under gone ablative surgery in hospital. The resected regions in this surgery included nasal septum, superior, Middle and inferior conchea, anterior wall of ethmoid sinus, middle wall of maxillary sinus and anterior wall of sphenoid sinus, in addition to parts of hardpalate (maxillary anterior alveolar segment). She said that after the surgery, she rarely showed up in the public and always covered the defect with a guaze. Her speech was completely hypernasal and she had difficulty in swallowing. For satisfying her functional and aesthetic needs, a nasal silicon Prosthesis attached to obturator Prosthesis in maxilla with magnet retention was fabricated.Conclusion: Reconstruction of Midface deficiencies according to defect region, its extension and patient's age can be accompolished with surgery, Prosthesis or a combination of both approaches. In this patient, a nasal Prosthesis and maxillary obturator was fabricated. In this article nasal Prosthesis fabrication step by step was explained.

Background. One of the most popular complication of dental implants is periimplantitis which if not treated may lead to dental implant failure, there are different major causes of periimplantitis such as poor oral hygiene, lack of attached gingiva, poor Prosthesis, … … Here we are going to discuss the Prosthesis related periimplantitis, how to diagnose and how to manage and the preventive solutions Methods. The methods by which we can prevent the Prosthesis related periimplantitis and the signs and symptoms of disease is very important in long term survival of dental implants Results. The rate of Prosthesis related periimplantitis is high, and the supposed role of it in implant failures is obvious. Conclusions. As the most important factor in long term failure of implants, Prosthesis is of great importance, so the process and the guidelines should be carefully followed.

The distal radioulnar joint (DRUJ) prostheses have been available for many years and despite their superior outcomes compared to conventional DRUJ reconstructions in both short and long-term follow-ups, they have not become as popular as common hip and knee prostheses. In the current review article, at the first step, we discussed the applied anatomy and biomechanics of the DRUJ, and secondly, we classified DRUJ prostheses according to available literature, and reviewed different types of prostheses with their outcomes. Finally we proposed simple guidelines to help the surgeon to choose the appropriate DRUJ Prosthesis.

In this paper, an entirely novel, theoretical restoration/conservation tool will be described. This tool will take the form of self-sustaining ‘synthetic vegetation’ designed, through the use of solar energy, to generate Oxygen through the electrolysis of water and sequester CO2 in a disposable form through the formation of Carbonic acid amongst other things; in short simulate many of the major functions of living vegetation. The environmental role of synthetic vegetation as a terrestrial ecosystem ‘Prosthesis’ is evaluated with a Carbon acquisition calculation and a cost benefit analysis reviewing the benefits of utilization in the context of material costs. It is proposed that synthetic vegetation could greatly aid in conservation by regenerating degraded environments and speeding up the process of restoration.

Rapid prototyping (RP) is a technique of manufacturing parts by the additive layer manufacturing technology, where, a three-dimensional (3D) model created in a computer aided design (CAD) system is sectioned into 2D profiles, which are further constructed by RP layer by layer. Its use is not limited to industrial or engineering fields and has extended to the medical field for the manufacturing of custom implants and prostheses, the study of anatomy and surgical planning. Nowadays, dentists are more frequently encountered with the individuals affected with craniofacial defects due to trauma. In such cases, the cranio-maxillofacial rehabilitation is a real challenge to bring the patients back to society and promote their well-being. The conventional impression technique for facial Prosthesis fabrication has the disadvantage of deforming the soft tissue and causing discomfort for the patient. Herein, we describe the fabrication of a cranial Prosthesis combined with an ocular Prosthesis with RP and stereolithography.

This study used three-dimensional finite element analysis to investigate the stress distribution in a mandibular fixed Prosthesis with six implants. There are three different materials for implants (titanium alloy, pure titanium, chromium-cobalt alloy) and four different materials for frame (titanium alloys, chromium-cobalt alloys, palladium-silver alloys and gold alloy) that used in twelve models by different combination of materials. A total of 150 N vertical load is distributed over the teeth in the finite element model. The result shows that the concentrated stress in the screw will increase the risk of Prosthesis failure. We obtained the best model with Cr-Co alloys for both implant and frame or for second choice Cr-Co alloys for frame and titanium alloy for implant.