Faculty of Dentistry. Department of Oral Medicine and Periodontics. Browse by Date. Browsing by Issue Date Filter results by year or month Choose year Now showing 1 - 20 of The handling of undated pig embryos and foetuses as a prelude to histological studies of morphogenesis in the oral region University of the Western Cape , van Rensburg, Barend.
Gabriel ; van Wyk, C. The author is interested in the morphogenesis of the oral region including the nasopalatine complex. According to the literature there is, however, a distinct similarity between human and domestic pig development in certain regions, notably the palate.
Furthermore, pig embryos and foetuses are available in comparative abundance from sows slaughtered at abattoirs. As a consequence of the above-mentioned factors it was,decided to undertake a -preparatory study in order to firstly evaluate existing methods of handling of embryonic and foetal material and secondly, to statistically evaluate data relating to mass and measurements.
Embryos and foetuses were removed from slaughtered sows in a fresh state and removed to the laboratory immersed in 10 per cent neutral buffered formol saline.
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In the laboratory foetal membranes were removed, umbilical cords cut and the specimens weighed. They were then placed in Bouin's solution for final fixation and decalcification. Instruments were designed to measure crown-tailroot length, crown-rump length and dorsal profile length. After one day in Bouin's solution all specimens were measured. In order to determine the accuracy of the weighing and measuring procedures ten fixed specimens were weighed and measured on seven consecutive days.
