Results 241 to 250 of about 29,440 (303)

Age Factor in Secondary Dentin Formation

Journal of Dental Research, 1966
SYNOPSIS IN INTERLINGUA LE FACTOR DEL ETATE IN LE FORMATION DE DENTINA SECUNDARI.—Le examine microscopic de 273 permanente incisores supero-central sin grados marcate de carie o de attrition, extrahite ab grecos de cognoscite etates, revelava que post le "completion" del apice del radice regular dentina secundari esseva primo formate in tracias super
G G, Philippas, E, Applebaum
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Location of Irregular Secondary Dentin Formation

Journal of Dental Research, 1968
Study of 686 lower anterior teeth with various degrees and planes of attrition revealed positive association of functional pressures with location of irregular secondary dentin. The latter, although varied in amount, was the same in each type of tooth of the same age group, and was unrelated to the degree of attrition.
G G, Philippas, E, Applebaum
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Secondary dentin in replanted teeth — a histometric study

Dental Traumatology, 1990
Abstract To quantify the secondary dentin formation in replanted teeth, 16 human premolars with a postoperative observation period of 6, 12 and 24 weeks were studied histometrically. In spite of marked intra‐ and interindividual variations, a regression analysis revealed a significant correlation (r=0.70) between observation time and the quantity of ...
M, Breivik, E, Kvam
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Secondary Caries in Dentine around Composites: A Wavelength-Independent Microradiographical Study

Caries Research, 1994
Composite restorations are prone to develop secondary caries if a gap exists between tissue and restoration. The aim of this article was to quantify the effects of a fluoridating and non-F composite on secondary dentine caries in vitro as a function of time.
Dijkman, GEHM, de Vries, Jacob, Arends, J   +2 more
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The early formation of irregular secondary dentine in progeria

Oral Surgery, Oral Medicine, Oral Pathology, 1969
P rogeria, a rare childhood disorder, was first described by Hutchinson in 1885 and was given its name, which means prematurely old, by Gilford.2z 3 The syndrome, of unknown etiology, is characterized by dwarfism and premature senility. The affected persons resemble each other closely and exhibit almost complete alopecia, a high-pitched squeaky voice ...
D G, Gardner, M, Majka
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The Formation of Secondary Dentin and Related Problems

Journal of Dental Research, 1946
It is generally believed that the formation of secondary dentin under fillings, caries and other forms of exposure of dentin is caused by stimuli which reach the pulp through the dentinal fibrils. It is known that the odontoblasts do not form dentin.
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Comparative Study of the Composition of Primary and Secondary Dentine

Caries Research, 1989
There is considerable variation in the composition of primary and secondary dentine. In general, secondary deposits, regardless of type, contain less calcium, phosphorous, and collagenous matrix per unit volume when compared to primary dentine. Fluoride levels show the reverse tendency.
P C, Foreman, J V, Soames
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Amount of secondary dentin as an indicator of age

European Journal of Oral Sciences, 1992
The amount of secondary dentin in a tooth has been used as one of several parameters in methods for age estimation. Dentin deposition has been measured according to various scoring systems, and the Pearson correlation coefficient with age has been found to be approximately 0.6.
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SEM examination of secondary dentine under and opposite cervical carious lesions

Journal of Endodontics, 1997
The deposition of calcified secondary dentine underlying carious lesions and on the wall opposite to the carious lesions was examined in this study. Twenty single rooted human teeth were used in this work. The teeth were cleaned and fractured into two longitudinal halves, which were examined under a scanning microscope.
O, Pantelidou, K, Lyroudia
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Scanning electron microscopic observations of casts of human dentinal tubules along the interface between primary and secondary dentine

The Anatomical Record, 1985
AbstractA scanning electron microscope cast technique was used to examine the interface between primary and secondary dentine in young and old human teeth. In addition, more traditional methods were used to examine this interface with light microscopy, identical regions being viewed before and after demineralization.
Y N, Wang, S H, Ashrafi, D F, Weber
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