Auxetic materials are gaining special interest in technical sectors due to their attractive mechanical behaviour. This paper reports a systematic investigation on missing rib design based auxetic structures produced from braided composites for civil engineering applications. The influence of various structural and material parameters on auxetic and mechanical properties was thoroughly investigated. The basic structures were also modified with straight longitudinal rods to enhance their strengthening potential in structural elements. Additionally, a new analytical model was proposed to predict Poisson's ratio through a semi empirical approach. Auxetic and tensile behaviours were also predicted using finite element analysis. The auxetic and tensile behaviours were observed to be more strongly dependent on their structural parameters than the material parameters. The developed analytical models could well predict the auxetic behaviour of these structures except at very low or high strains. Good agreement was also observed between the experimental results and numerical analysis.

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This literature review aims to address the characteristics of normal dentition, as parameters for the diagnosis of malocclusions, emphasizing the benefits of preventive and interceptive orthodontic procedures to oral health. Preventive and interceptive measures of malocclusion can be done with simple procedures performed by the dentist, with positive and relevant effects on oral health. It is understood as preventive procedures, promotion of natural breast feeding, dental restorations, installation of space maintainers, suspension of harmful oral habits, allowing adequate functions of the stomatognathic system. The interceptive procedures include the correction of malocclusions in the primary or mixed dentition, preventing them from remaining in the permanente dentition, therefore, it allows redirecting facial Grow than drestoring functional balance. The dentist must have knowledge of the characteristics of normality of primary and mixed dentitions, as well as the etiology of malocclusions, which includes genetic and environmental factors or the interaction of both. Interceptor treatment should start as soon as possible, allowing it to take Advantage of the growth potential of the jaws and correct deleterious oral habits, correcting orofacial disharmony and restoring dental occlusion. It must be performed in cases of anterior open bite, anterior and posterior crossbites, maintenance and space recovery in the early loss of primary teeth. It was concluded that the preventive and interceptive procedures allow a balanced orofacial development and normal evolution of the occlusion, having a positive impacton oral health.