An investigation of the adequacy of interproximal matrices commonly used with posterior composite restoratives.
Abstract The adequacy of six interproximal matrix systems commonly used during the placement of Class II composites has been assessed in vitro . The results indicate that none of the matrix systems investigated can be considered to be ideal.
A comparison of methods for contouring the occlusal surfaces of posterior composite restorations.
Abstract Four different techniques considered appropriate for contouring the occlusal portions of Class II composites have been evaluated and compared in terms of ability to restore occlusal morphologies and to leave the occlusal portions of Class II restorations of three different types of composite restoratives with acceptable marginal adaptation. The results indicate that none of the contouring techniques tested can be considered ideal. The type of composite restorative used was not found to significantly influence the adequacy of the techniques investigated It is suggested that for most posterior composites a free-hand anatomical contouring/counter-die contouring technique may be shown to be simpler and more effective than any of the techniques tested in the present study.
Complex Systems Architecture Framework: Extension to Multi-objective Optimization
This paper shows the utility to follow an architecture framework in order to design complex systems with a holistic approach. Multi-objective Optimization techniques extend and complete the architecture framework to support trade-off analysis and decision making in the Systems Engineering design process. The merging and combination of these two approaches, decision making and systems engineering, contribute to the efficient design of systems by helping to meet needs and constraints stemming mainly from the system analysis.