This review article compiles the characteristics of resin based dental composites and an effort is made to point out their future perspectives. Recent research studies along with few earlier articles were studied to compile the synthesis schemes of commonly used monomers, their characteristics in terms of their physical, mechanical and polymerization process with selectivity towards the input parameters of polymerization process. This review covers surface modification processes of various filler particles using silanes, wear behaviour, antimicrobial behaviour along with its testing procedures to develop the fundamental knowledge of various characteristics of resin based composites. In the end of this review, possible areas of further interests are pointed out on the basis of literature review on resin based dental materials.

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Introduction: Open fracture of tibia is one of the most common injuries seen in ortho pedic practice. The appropriate treatment of open tibial fractures is one of the priority problems in modern era of traumatology. New tibial titanium nail with a biodegradable gentamicin-loaded coating (UTNPR Otect, Synthes) was CE-certified in August 2005. The main goal of locally delivered antibiotics is to prevent bacterial colonization of the implant surface, there by reducing the risk of implant-related infections. Aims and Objectives: To assess functional and clinical outcome after intramedullary locking nail fixation of open fracture shaft of tibia. Method and Materials: 25 patients were selected of age group 18-65 yrs presenting with open fracture shaft tibia on the basis of OPD and emergency admissions in M.B. Govt Hospital Udaipur. Fractures were classified as per gustilo anderson classification. All patients were treated operatively with antibiotic coated intramedullary interlocking nail. and its outcomes were assested on the basis of Alho and Ekeland Criteria and complications were observed with follow up to 6 months clinically and radiological imaging.Result: In this study of 25 patients of age group 18yrs to 65yrs were treated with antibiotic coated Intramedullary inter locking nail, 80% cases were male and 20% cases were female. Mean time of union 16.5weeks.no implant related infection occurred only superficial infection found in two patients. Conclusion: the use of the antibiotic coated nail was good clinical and radiological outcome after 6 months. These prelimnary results support the use of antibiotic coated implants as a new potiential treatment option for prevention of infection in trauma patients.

Direct-Write techniques have the potential to revolutionize the way miniature sensor devices and microbattery systems are designed and fabricated. The Naval Research Laboratory has developed an advanced laser-based forward transfer process for direct writing novel structures and devices comprising of metals, ceramics, polymers and composites under ambient conditions on both ceramic and plastic substrates. Using this forward transfer technique, we have demonstrated the ability to rapidly prototype various types of physical and chemical sensor devices, and microbatteries. The laser forward transfer process is computer controlled which allows the design of the devices to be easily modified and adapted to any specific application. Furthermore, the same process enables the fabrication of complete sensor or power-source systems by incorporating the passive electronic components required for sensor readout or power management. Examples are provided of various types of miniature sensors, and prototype alkaline and Li-ion microbatteries fabricated using this technique.