[Concentration of magnesium in the amniotic fluid of a patient with diabetes]. / Stezenie magnezu w pllynie owodniowym u pacjentek z cukrzyca.

Amniotic fluid magnesium concentration in normal and diabetic pregnancy was analyzed. The mean amniotic fluid concentration of this metal was 0.28 +/- 0,03 mmol/l in diabetic group and 0,43 +/- 0,09 mmol/l in control group (p < 0,0001). The role of hypomagnesemia in the course of diabetic pregnancy was discussed.

Investigations on prevalence and treatment of fingernail biting.

Numerous investigations indicate that there is a parallel between emotional stress and hyperactivity of the masticatory muscles connected with mandibular parafunctions. Elimination of mandibular parafunctions is difficult and almost impossible, therefore, this paper proposed a treatment whereby nonharmful motor habits are substituted for the parafunction. Questionnaire investigations were carried out in 2905 subjects, with an attempt at treatment in the youngest group of 222 pupils. It was found that good results were obtained through adult supervision and cooperation.

[Studies on the incidence and possibility of collective treatment of certain non-occlusal parafunctions in elementary school children]. / Badania nad czestoscia wystepowania i mozliwoscia zbiorowego leczenia wybranych parafunkcji niezwarciowych u uczniow szkoly podstawowej.

A study was carried out on the incidence and possibility of collective treatment of non-occlusal parafunctions in 216 elementary school children aged 7-14 years. Two objectively detectable non-occlusal parafunctions were analysed: nail-biting and pencil-biting. The study included four meetings during which the fingernails and pencils were inspected in all children and a talk was given, explaining the harmfulness of motor habits in the masticatory system, and the children with these habits were told to replace them with other non-harmful movements as habits. Among 216 children 131 (60.6%) had such non-occlusal parafunctions with nail-biting in 51.9% of them, and pencil-biting in 31%. In 22.2% both habits were found. During the third control visit the overall incidence of both parafunctions was found to be decreased, from 60.6% to 37.9%. Elimination of nail-biting was obtained in 37.5% of cases, and pencil-biting in 64.2%, with the proportions of treated children varying in various classes. The study showed that nail-biting and pencil-biting are widely spread habits in the studied population and that collective treatment of these parafunctions is possible.