[Studies on the thickness of the hard tissue coating in the 1st upper deciduous molars with special reference to the shape of the crown].

The report is on metric examinations of the thickness of the hard substance coating of the first upper milk molars based on 122 tooth cuts (longitudinal and transversal) and on the shape of the crowns of these teeth. The measurements were made by means of a stereomicroscope SM XX number 551 190 (VEB Carl Zeiss, Jena), and the results were statistically evaluated.