Osseointegration, defined as a direct structural and functional connection between ordered, living bone and the surface of a load-carrying implant, is critical for implant stability, and is considered a prerequisite for implant loading and long-term clinical success of end osseous dental implants. The implant-tissue interface is an extremely dynamic region of interaction. This complex interaction involves not only biomaterial and biocompatibility issues but also alteration of mechanical environment. The processes of osseointegration involve an initial interlocking between alveolar bone and the implant body, and later, biological fixation through continuous bone apposition and remodeling toward the implant. The process itself is quite complex and there are many factors that influence the formation and maintenance of bone at the implant surface. The aim of this present review is to analysis the current understanding of clinical assessments and factors that determine the success & failure of osseointegrated dental implants.

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The results concluded that polymethylmethacrylate reinforced with different concentrations of titanium dioxide nanoparticles showed superior flexural strength than those of normal PMMA.

Complete or partial fingers are the most commonly encountered forms of partial hand losses. Though finger amputations are commonly due to traumatic injuries, digit loss may also be attributed to congenital malformations and disease. Irrespective of the etiology, the loss of a finger has a considerable functional and psychological impact on an individual. In order to alleviate these problems, partial or complete finger prosthesis may be fabricated. This clinical report portrays a method to fabricate silicone rubber prosthesis for a patient who has a partial finger loss caused due to trauma.

Background: The aim of this study was to evaluate if tilting of the distal implant at different angulations (30°and 40°) with different cantilever lengths (4 mm and 12 mm) affects the stress and strain distribution in an 'all-on-four' situation. Methods: A completely edentulous mandible was modelled with four tapered implants placed within the interforaminal region to receive an all acrylic fixed prosthesis. The two posterior implants were tilted at an angle of 30°and 40°. The prosthesis cantilever was given two different variables of 4 mm and 12 mm. For all models, the equivalent von Mises stress and strain was analysed using three-dimensional finite element analysis. Results: Statistical significance (p < 0.05) was seen when a comparison was made for the stress developed on the implant and cortical bone between the 30°and 40°distally tilted posterior implants in both situations. No significance was seen in the trabecular bone and on the strain developed in these situations. Conclusions: The study shows that increasing the tilt of the distal implants does not increase the stress significantly. It also shows that the architecture of the mandible plays a major role during treatment planning of a completely edentulous patient.