Showing papers in "Archives of Oral Biology in 1986"

TL;DR: Fibroblasts are responsive to the major metabolite of arecoline and hydrolysis of the ester group may be necessary for this action, which may contribute to the accumulation of collagen in OSF.

TL;DR: An assay for total peroxidase activity in saliva is developed, based on the rate of formation of hypochlorite, which is not affected by the concentrations of thiocyanate found in saliva.

TL;DR: After completion of primary dentine formation in the coronal region, the aged odontoblasts have a reduced number of organelles which are relocated within the infranuclear region.

TL;DR: The lipid content and composition of the enamel pellicle from caries-resistant (CR) andCaries-susceptible (CS) subjects and their effect on its ability to retard the diffusion of lactic acid were investigated.

TL;DR: In this paper, the quadrants of the jaw in 2 beagle dogs had various forms of periodontal disease induced by ligatures placed around second, third and fourth premolars in one quadrant and, 2.5 months later, around the same teeth in a second quadrant; gingivitis was allowed to develop in a third quadrant after 4 months; the fourth quadrant served as a healthy control.

TL;DR: Bone-strain data suggested that unloading patterns during the power stroke of mastication were largely a function of the relaxation time of the jaw adductors.

TL;DR: The inferior part of the muscle may participate in bracing the condylar head against the articular eminence during vertical-clenching efforts involving condylars displacement, but not in the compressive or crushing phases of the cycle.

TL;DR: It is concluded that incisor primordia are localized in or near the median epithelial isthmus (and are thus destroyed or damaged when the mandibular arch is hemisected) and thatincisors are not determined until E10 and frontonasal and maxillary processes gave rise exclusively to incisors.

TL;DR: The resemblance between the anatomy of the porcine and human joint and masticatory muscles makes the pig a useful animal for functional studies of the masticatories system.

TL;DR: Hypoplasia of the labial enamel of 15 out of 19 teeth from sheep killed after recovery from the infection was classified according to the extent and depth as pits, grooves or larger areas of missing enamel with ledge-formation cervically, related to the severity of the systemic disturbance which affected the secretory ameloblasts.

TL;DR: The hypothesis that mandibular bone-strain patterns are a good indicator of molar bite-force patterns in M. fascicularis during mastication was tested and principal compression was a better indicator of bite force than principal tension.

TL;DR: In this article, the authors investigated the ability of oral bacteria to use the oligosaccharide side-chains of salivary glycoproteins and explored how bacteria in the grooves grow in the absence of dietary food.

TL;DR: Of eleven strains tested for cell-surface hydrophobicity by partitioning between hexadecane and buffer, all but one was non-hydrophobic.

TL;DR: It was inferred that apatite owes its instability below pH 5 to its increasing solubility relative to that of brushite, and that this salt in the pH range above 5 was so soluble that the concurrent supersaturation with respect to either brushite or apatites would induce their formation causing the instability of the amorphous salt.

TL;DR: Low bio-availabilities were observed for most solid foods such as fish and algal flour and for mammalian and fish bones, when used as typical components of fluoride-rich Foods such as meat- and fish-products, in healthy adult volunteers.

TL;DR: The findings identify types V and VI collagen as important structures in the oral mucosa and serve as a basis for understanding morbid changes.

TL;DR: Histochemical staining suggested that the intracellular lipid was mainly triglyceride which may accumulate by increased uptake for use as an energy source, or by decreased use in the synthesis of secretory granule and plasma-membrane material.

TL;DR: Differences in the types and distribution of lipids accord well with known permeability differences, which show that keratinized oral epithelium and epidermis have a similar impermeability to water and that non-keratinized regions have greater permeability.

TL;DR: The results indicated that any averaging of data based upon time-amplitude alone would be inappropriate for habitual chewing because of the call for different working sides within a particular masticatory sequence, so a new data format based upon numerical representation of the electromyographic activity against time was introduced.

TL;DR: Co-administration of F and [14C]-chlorhexidine showed a higher diffusion rate for each compound than when separately diffused, and whether this is due to a synergetic effect or to increased enamel permeability following the initial diffusion of the compound, or both is still uncertain.

TL;DR: Serum IgG antibody titres to lipopolysaccharides (LPS) from two strains of Actinobacillus actinomycetemcomitans were significantly elevated in juvenile periodontitis compared with other types of periodontal disease and with controls.

TL;DR: D dipped rat incisor enamel was permeable to proteins with molecular weights as high as 6100, and localization of injected proteins indicates that the enamel organ restricts their passage into enamel, but proteins with Molecular weights ashigh as 5700 may pass intoEnamel through or between smooth-ended ameloblasts.

TL;DR: The analysis of specific electromyographic (MPF) indicators provides information about the development of muscle fatigue.

TL;DR: The histological structure of these glands was examined in male rats in two adult age groups, and the findings support the concept that biological ageing in the salivary glands does not occur as a uniform generalized process throughout all thesalivary tissues.

TL;DR: Rat and bovine DPP are thus species-specific and DPP is synthesized by the odontoblasts, transported through their processes and secreted into the dentine and adsorption experiments with DPP suggested that non-calcium precipitable DPP was present in rat predentine.

TL;DR: Host-derived substrates, possibly salivary components, may be used by plaque bacteria and support their on growth in developmental grooves in the absence of food.

TL;DR: Orientated 0.47 nm reflections in X-ray diffraction patterns of developing rat tooth enamel were confirmed, indicating that some of the organic matrix proteins adopt a beta-sheet conformation.

TL;DR: The cell-free and cell-rich zones revealed a dense layer of fibres reacting positively with type III collagen and fibronectin antibodies, and the width of these zones were reduced in relation to reparative dentine.

TL;DR: In jaw muscle from healthy young adults, there were large groups of densely-packed fibres of the same histochemical type, a finding which indicates re-innervation when seen in limb muscles, probably related to their unique function.

TL;DR: Secretory-stage inner dental epithelial cells (IDE) of tooth buds deposited an unmineralized, ectodermally-derived, enameloid collagen matrix, considered to be resorbed enameloids collagen, not a secretory product.