[Prenatal discovery of Joubert syndrome associated with small bowel volvulus]. / Découverte anténatale d'un syndrome de Joubert associé à un volvulus du grêle.

Joubert syndrome and prenatal volvulus are difficult to diagnose during pregnancy. Joubert syndrome and related diseases should be considered in case of prenatal abnormal features of the fourth ventricle. Small bowel volvulus is also a surgical emergency because of the risk of intestinal necrosis before or after delivery. This type of condition justifies the transfer of pregnant women to a specialized hospital where the newborn may receive appropriate care. We report the case of a 31-week and 4-day gestational-age fetus in whom intrauterine growth retardation and small-bowel volvulus were diagnosed. Additional imaging revealed associated Joubert syndrome. This highlights the need for regular ultrasound monitoring during pregnancy and the comanagement of obstetricians and pediatricians to provide appropriate care before and after delivery.

[Parodonto-prophylactic restoration of occluding stops by dental bridges]. / Restaurarea parodontoprofilactica a stopurilor ocluzale prin punti dentare.

The authors have studied data from the specialized literature and evaluated their personal experience for identifying the positive and the negative aspects of current methods for the restoration of occluding stops. The study has evidenced that the method employing a median articulatory device and the galvanic model of the antagonist teeth can be used for the biological integration at a higher level of efficiency of dental bridges which are intended to restore occluding stops. Superior functional parameters are achieved. Clinical observations, kinesiographic recordings and final occluding evaluations have been used. However, these methods are applied only in clinical cases that have been correctly investigated, and on condition that the restorative technique is followed fully. This method, with all its advantages when compared to the morphostatic method with distal key of occlusion, or with occluding device presumes the availability of very good clinical and technical conditions. By the nature of his preoccupations, the praxiological and gnathological essence of the practitioner is to achieve conservation and to restore occluding stops by various methods. One of the consequences of these approaches is to achieve prophylactic methods, that will not disturb the parodontial balance. The study presented here was aimed at this. Stomatologists should have a sound knowledge of occluding physiology, and this for two major considerations: they can prevent, when well informed, the development of the complex pathology due to occluding dysfunction, and they can apply functional restorative therapies to patients that are occlusally traumatized, restoring the occluding balance.

[Structural changes in bronze (Gaudent) and Palliag alloys following corrosion effects]. / Modificari structurale ale aliajelor de bronz (Gaudent) si Palliag la atacul coroziv.

Due to socio-economic considerations the use of two new types of non-oxydable alloys satisfactory for practical necessities should be examined more closely with a view to acquire a better knowledge of their behaviour. The present study investigates the behaviour of Gaudent and Palliag alloys under the effects of corroding agents. An analysis with an electronic micro-probe of the samples of ally exposed to corroding effects has evidenced various reactions in the buccal cavity and in the environment. In the buccal cavity the bronze alloy (Gaudent) has, in most of the cases, a satisfactory reaction from the macroscopical viewpoint. However, when exposed to hydrochloric acid and sodium hydroxide solutions it undergoes an intercrystalline corrosion and its surface aspect is changed. The Palliag alloy has an evident microscopic stability against these corroding agents.