Electron microscopy of various zones in a carious lesion in human dentine

Takuma, S.; Kurahashi, Y.

doi:10.1016/0003-9969(62)90132-2

Cited by 25 publications

(12 citation statements)

References 13 publications

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“…This was in accordance with data reported in the lit erature [Takuma et al, 1967;Johnson et al, 1969]. At this stage, intertubular den tine still presented the same characteristics (relationship between collagen and crystals) as sound dentine.…”

Section: Intratubular Dentinesupporting

confidence: 81%

“…Crystals observed in this area were small, numerous and closely packed. The increase in crystal concentration can be par alleled with a quantitative increase in the organic substance, probably depending upon an outside source (oral fluid), as was pointed out by Johansen [1965] and Takuma et al [1967]. Together with the thicken ing of the peritubular dentinal layer, a nar rowing of the tubule lumen occurred.…”

Section: Peritubular Dentinementioning

confidence: 84%

“…Obvious distinction between arrested and active carious dentinal lesions is rather difficult to draw since there is evidence that the different steps -active caries, arrested caries and remineralization -may be found in the same carious lesion [Massler, 1967;Takuma et al, 1967], However, constant structures can be observed within the le sions of arrested caries. Some of our ob servations corroborate data reported in the literature.…”

Section: Discussionmentioning

confidence: 99%

“…(4) In the fourth phase, large intratubu lar crystals were found together with thinner needle-shaped crystals [Takuma et al, 1967], We must insist on the fact that both aspects corresponded to different types of crystals.…”

Section: Intratubular Dentinementioning

confidence: 99%

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Qualitative and Quantitative Data on Arrested Caries in Dentine

et al. 1979

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Identification and indexing of lattice planes through high-resolution transmission electron microscopy provided precise measurements of intertubular crystals of arrested caries in dentine compared to sound dentine. In arrested caries, mean crystal width was 310 Å (SD 44) with a range from 200 to 400 Å. Mean thickness was 86 A (SD 19.3) with a range from 57 to 130 Å. In sound dentine, mean width was not very different at 296 Å (SD 39) with a similar range from 200 to 400Å. Mean thickness was lower: 31.6 Å (SD 5.4) with a range from 24 to 41 Å. A growing process due to thickening of the crystallites was pointed out. The coexistence of whitlockite and apatite within the large crystals of intratubular dentine in arrested caries was shown through high-resolution electron microscopy and micro-electron diffraction. Two stages of arrested caries could be found at the crystal level: firstly, a precipitate of the material dissolved at the very beginning of the carious process, and secondly, remineralization of decalcified dentine by growth of residual crystals (intertubular dentine) and by a maturating process of whitlockite towards apatite (intratubular crystals).

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Section: Intratubular Dentinesupporting

confidence: 81%

Section: Peritubular Dentinementioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Section: Intratubular Dentinementioning

confidence: 99%

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Qualitative and Quantitative Data on Arrested Caries in Dentine

et al. 1979

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“…These inves tigations have been made either on the ul trastructural aspects and development of dentinal sclerosis or on the bacterial inva sion of the tissue \ Her nick et ai, 1954;Scott and Albright. 1954;Helmcke, 1955;Lem, 1955;Holding, I960;Awazawa, 1961;Jo hansen and Parks, 1961;Takuma and Kurahashi, 1962;Frank et al, 1964;Vahl et al. 1964;Holding et al, 1965;Herting, 1966;Haberman et al, 1967;Johansen, 1967;Takuma et al, 1967;Lester and Boyde, 1968;Llory and Frank, 1969;Symons, 1970;Daculsi et al, 19791.…”

mentioning

confidence: 99%

Ultrastructure of the Human Odontoblast Process and Its Mineralisation during Dental Caries

Frank

Voegel

1980

Caries Res

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A transmission electron microscope and electron diffraction study of the inner layer of human dentine carious lesions adjacent to the transparent zone has shown no sign of degeneration of the odontoblast processes which were rich in microfilaments, microtubules and large vacuoles. Intratubular calcification occurred either by an initial mineralisation of the periodontoblastic space followed by the calcification of the odontoblast process or by an initial intracytoplasmic calcification followed by a secondary periodontoblastic mineralisation. Initial inorganic crystalline deposits in the periodontoblastic space consisted of whitlockite with the presence of hydroxyapatite at later stages.

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Some preliminary observations on caries (?remineralization?) crystals in enamel and dentine by surface electron microscopy

Lester

Boyde

1968

Virchows Archiv Abteilung A Pathologische Anatomie

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Electron microscopy of various zones in a carious lesion in human dentine

Cited by 25 publications

References 13 publications

Qualitative and Quantitative Data on Arrested Caries in Dentine

Qualitative and Quantitative Data on Arrested Caries in Dentine

Ultrastructure of the Human Odontoblast Process and Its Mineralisation during Dental Caries

Some preliminary observations on caries (?remineralization?) crystals in enamel and dentine by surface electron microscopy

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