Some applications of solid phase micro extraction (SPME) in the analysis of pesticide residues in food.

The Solid Phase Micro-Extraction (SPME) technique was applied to analyze chlorpropham in potatoes and amitraz in honey. The homogenized sample, suspended in water and stirred, was extracted with a 100 microns thick polidimetylsiloxane fiber and desorbed into the injection port of a gas chromatograph/mass-spectrometer (quadrupole) operating in single ion monitoring. Sensitivities down to 0.

[Black's class II: a critical analysis of 278 fillings].

The aim of this study was to make a critical and statistical assessment of Black's class 2 fillings. The study was based on a critical examination which evaluated the material used for the fillings, morphology, periodontal conditions and oral hygiene.

[Misoprostol in oral surgery. 112 clinical evaluations].

The efficacy of misoprostol in protecting gastric mucosa during postoperative NSAID therapy was assessed in a sample group of 112 patients of both sexes suffering from gastric pathologies for which they had undergone oral surgery. The analysis of the results confirms the therapeutic efficacy of misoprostol which enabled these patients to conclude the recommended treatment.

[The advantages and disadvantages of root canal measurement technics. The contribution of electronics].

The paper stresses that the difficulties of canal measuring are based on the extreme anatomical variation of the apical zone. Following an overall assessment of the main techniques currently used, the importance of supplementing traditional techniques with electronic devices is emphasised. If used correctly, the latter now represent the most accurate and reliable instruments available to the endodontist.

[Caries receptivity: a modern diagnostic protocol. II. The most important tests].

In this, the second part of the paper, the main clinical tests available today for carrying out early diagnosis of carioreceptivity are reviewed. On its own, measurement of the DMF-T index can classify an individual as carioactive or evaluate his "experience of caries", but it does non determine with any degree of certainty the probability of future caries. Measurement of stimulated salivary flow is important only when this is greatly reduced, as happens, for example, in xerostomy, but the finding of an almost normal flow is not on its own sufficient to make a diagnosis of carioreceptivity certain.