Showing papers in "Archives of Oral Biology in 1973"

TL;DR: A selective medium was developed for the isolation of Streptococcus mutans from human dental plaque with maximum inhibition of the balance of the streptococcal flora normally encountered on this medium.

TL;DR: The unusual finding of true denticles in these heritable dentine defects may represent the induction of odontoblastic differentiation by aberrant epigenetic factors produced in the abnormally developing dentine.

TL;DR: The findings strongly suggest that the “early gingival lesion” has the characteristics of a cellular hypersensitivity reaction and that lymphocytes, possibly by means of cytotoxic factors or direct cell-to-cell interactions, affect the synthetic activity of fibroblasts, leading to alterations in connective tissue substances.

TL;DR: Although the mean number of Streptococcus mutans increased with time on each of the three surfaces, it remained much higher in the pits and fissures than on the buccal and approximal surfaces, and the initiation of caries tended to be preceded by elevated numbers of both Strep.

TL;DR: Hydxyapatite and dental enamel powders were found to selectively adsorb seven parotid salivary components from the stimulated and the unstimulated secretion, which appeared to be a sub-group of related proteins.

TL;DR: The contribution from minor mucous glands was the difference between the flow rate of mixed saliva and the combined flow rate from the right parotid, submandibular and sublingual glands.

TL;DR: Control mechanical stimulation of the upper lip in seven subjects resulted in a period of complete or partial inhibition of the electromyographic activity of the masseter muscle, which may result in two distinct periods of inhibition in the jaw-closing muscles.

TL;DR: Physical development was retarded in the underprivileged, malnourished village children compared with their counterparts from higher socio-economic homes and no evidence emerged of a causal relationship between the enamel hypoplasia and past or present systemic conditions, including premature birth.

TL;DR: Results showed a series of somatotopic columns arranged longitudinally within the ganglion, which was more complex although, in general, intraoral structures were represented in the more ventral nerve-cell masses.

TL;DR: The parotid salivary component showing the highest affinity for these surfaces has been isolated using ammonium sulphate fractionation and gel permeation chromatography and has been purified by means of preparative scale disc electrophoresis.

TL;DR: In the decerebrate cat, mechanical stimulation of the mucosa of the hard palate elicits four distinct oral reflexes—transient jaw-opening, transient jaw-closing, prolonged jaw- opening and a repeating tongue movement.

TL;DR: The role of peroxide is discussed in maintaining a balance of the indigenous dental plaque flora and the potential for a bactericidal activity in vivo by Strep.

TL;DR: The faster decline in mitotic activity of palatal tip epithelium, together with tissue culture and histochemical evidence from other studies, supports the concept of programmed cell death for this tissue.

TL;DR: The lost fluoride was not apparently restored by post-eruptive uptake, even in teeth from a district where the fluoride concentration of the water supply was relatively high.

TL;DR: The Negro boys and girls evidenced a 0.30 standard deviation emergence advancement of non-uniform or “patterned” nature, with the greatest temporal difference for the mandibular lateral incisors in both sexes.

TL;DR: It would seem that the extrinsic mechanical stresses associated with functional activity of the mandibular joint provides the stimulus for the normal differentiation of the cells of the proliferation zone into chondroblasts, and it is clear that cell division within the proliferative zone can operate independently of these extrinsical factors.

TL;DR: A longitudinal study of the presence of Candida species and yeasts in infants from the day of birth until 1-yr-old, diagnosed by the culture of oral swab samples showed no correlation with initial or subsequent oral colonization by this organism.

TL;DR: Lipids extracted from dentine and enamel of rat incisors and molars were qualitatively and quantitatively analysed before and after decalcification.

TL;DR: The presence of prismless enamel, common in deciduous teeth, may significantly influence resin retention due to its limited porosity and penetrability, following acid-conditioning.

TL;DR: The orbital gyrus is not essential for rhythmic tongue and jaw movements, but it can control functions of a “rhythm-generating centre of chewing movements” and Impulses via the lingual nerves can also affect activities of this centre.

TL;DR: Under SLD-stimulation in which the left parotid flow rate was maintained constant at 1 ml/min, statistically significant circadian rhythms could not be demonstrated in the flow rate of whole saliva or in the proportional contribution ofParotid to whole saliva.

TL;DR: Dental plaque was collected on epoxy resin crowns inserted in the mouth of human volunteers for periods of 1–21 days and cocci were found to be attached to the outer surface of filamentous organisms in formations resembling “corn cobs”.

TL;DR: Fluid movement through human dentine produced by solutions of CaCl2, NH4Cl, NaCl, urea and Golden Syrup and by thermal stimuli and drying was estimated from records of pressure changes in the pulp chambers of recently extracted teeth.

TL;DR: In this article, peritoneal macrophages, obtained by lavage and cultured for 24-72 hr in media 199, were exposed to several concentrations of dead, freeze-dried plaque for various time periods, leading to a 3-4-fold increase in cell size and in the content of lactate dehydrogenase and leucine-2-naphthylamidase, and a doubling in the levels of beta-glucuronidase.

TL;DR: The circadian variations in flow rate and pH of stimulated parotid sauva and the concentrations of sodium, potassium, calcium, chloride, inorganic and total phosphate, nitrogen, protein, glucose and total carbohydrate have been studied and shown to fit curves derived from a combination of a fundamental sine wave of 24 hr period and its first harmonic.

TL;DR: In this United States probability sample of a nutritional survey conducted in 1969-1970, data for 273 caucasoid children were analysed to determine if deciduous tooth emergence was related to height, weight and head circumference.

TL;DR: It is argued that the submersion must be a result of the ankylosis and not vice versa, and the pattern was one of normal eruption and occlusion until the onset of ankyLosis, followed by an increasing separation between the occlusal surfaces of the neighbouring teeth and that of the affected tooth.

TL;DR: In conclusion, gustatory stimulation resulted in the secretion of incompletely synthesized molecules, and Immunoelectrophoretic analyses of both stimulated and unstimulated parotid saliva revealed that the core protein was not detectable in the unstimulating secretion.

TL;DR: The available data indicate that Strep.

TL;DR: Supramaximal electrical stimuli were delivered to the pulps of the canine teeth through bipolar electrodes and recordings were made of the field potentials and single unit activity evoked in the trigeminal sensory nucleus, and much more was encountered in the main sensory nucleus and subnucleus oralis.