In the recent decades, periodontal disease has been identified as a risk factor for pre-term deliveries. Hence, it is important to evaluate the awareness of health-care providers of the association between periodontal diseases and pre-term birth. A self-administered questionnaire was distributed to random samples representing general medical practitioners (GMPs), general dental practitioners (GDPs) and Gynecologists for this study. A knowledge score was calculated for correct answers to 11 survey questions related to oral health effects during pregnancy and compared among the three groups. In this study, 133 physicians, 135 dentists and 100 Gynecologists completed the questionnaire. More GDPs (67.4%) than GMPs (56.4%) and Gynecologists (63%) reported there was an association between periodontal disease and pre-term low birth weight. Efforts to increase this awareness may prove valuable in improving preventive care during pregnancy.
The study has brought into forth the role of passive smoking in the development of oral clefts thereby warranting an effective public health policy to tackle the same.
Single crystals of barium oxalate monohydrate (BaC 2 O 4 .H 2 O, BOM) were grown in pure form by controlled diffusion of Ba 2+ using the gel technique at different temperatures. Starting from aqueous Ba 2+ chloride (BaCl 2 ) and acetic acid (C 2 H 2 O 4 ) in gel, this method offers a low-cost and an easiest alternative to other preparation methods for the production of barium oxalate bulky single crystals. The optimal conditions for the growth of BOM crystals in silica gel were found by investigating different growth parameters such as gel pH, gel aging and crystallization temperature. Irrespective of all such crystallization environments, growth rate of the crystals were initially less and then exhibited supersaturation effect leading to non-linearity. Gel aging and temperature has profound effect on nucleation density that resulted less number of crystals of maximum size in the gel matrix. Perfect single crystals were grown on gels of higher pH. The macropore morphology and porosity was controlled by changing age of the gel. It has been found that temperature has a fabulous effect in controlling the nucleation density by altering the supersaturation conditions for the formation of critical nuclei. The entire growth kinetics informed that the grown crystals were derived by the one dimensional diffusion controlled process.
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