PubMed · 1389593
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S Duffy. 1992-09-05. Fee crisis.. https://doi.org/10.1038/sj.bdj.4807961
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Introducing the quality control of ISO-900 into dentistry is very urgent and important task nowadays. In this article we report about: how we should be able to double check and evaluate the clinical part of the work in the dental laboratories. What kind of possibilities we have and how dependable they are, in order to control the different phases of the dental work. We also looked into the question whether dental technician get enough and dependable information from the dentists in order to make quality high standard work.
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The parotid-masticatory salivary reflex has been studied in edentulous subjects. Salivary flow was recorded by siting a modified Lashley cup over the orifice of the parotid duct on one side of the mouth. Subjects chewed on small pieces of silicone rubber with their complete dentures for 1 min periods which resulted in a reflex secretion of parotid saliva. The secretion was greatest when the subject chewed on the same side of the mouth (ipsilateral) as the salivary flow was recorded. Less salivary flow resulted when the subjects chewed on the opposite side of the mouth (contralateral). Anaesthesia of the mucosa of the maxillary and mandibular denture-bearing area was achieved by placing a thin layer of anaesthetic ointment in the fitting surface of the dentures on the side ipsilateral to the Lashley cup. This resulted in a reduction of salivary flow in response to similar chewing cycles. The results confirmed the presence of a parotid-masticatory salivary reflex in edentulous subjects which appears similar in many respects to that of dentate subjects. It is likely that receptors in the oral mucosa are stimulated when an edentulous subject masticates with complete dentures and that activity in these mechanoreceptive neurones results in the reflex salivary secretion.