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Scanning electron microscope study of early bacterial penetration of human enamel in initial caries

Tonči Staničić ; School of Dental Medicine, University of Zagreb, Zagreb, Croatia
Marjan Tudja ; Institut »Chromos-istraživanje« Zagreb

Puni tekst: hrvatski, pdf (8 MB) str. 169-175 preuzimanja: 198* citiraj
APA 6th Edition
Staničić, T. i Tudja, M. (1988). Scanning elektronsko mikroskopsko istraživanje bakterijske penetracije kod početnog karijesa humane cakline. Acta stomatologica Croatica, 22 (3), 169-175. Preuzeto s https://hrcak.srce.hr/105065
MLA 8th Edition
Staničić, Tonči i Marjan Tudja. "Scanning elektronsko mikroskopsko istraživanje bakterijske penetracije kod početnog karijesa humane cakline." Acta stomatologica Croatica, vol. 22, br. 3, 1988, str. 169-175. https://hrcak.srce.hr/105065. Citirano 05.12.2020.
Chicago 17th Edition
Staničić, Tonči i Marjan Tudja. "Scanning elektronsko mikroskopsko istraživanje bakterijske penetracije kod početnog karijesa humane cakline." Acta stomatologica Croatica 22, br. 3 (1988): 169-175. https://hrcak.srce.hr/105065
Harvard
Staničić, T., i Tudja, M. (1988). 'Scanning elektronsko mikroskopsko istraživanje bakterijske penetracije kod početnog karijesa humane cakline', Acta stomatologica Croatica, 22(3), str. 169-175. Preuzeto s: https://hrcak.srce.hr/105065 (Datum pristupa: 05.12.2020.)
Vancouver
Staničić T, Tudja M. Scanning elektronsko mikroskopsko istraživanje bakterijske penetracije kod početnog karijesa humane cakline. Acta stomatologica Croatica [Internet]. 1988 [pristupljeno 05.12.2020.];22(3):169-175. Dostupno na: https://hrcak.srce.hr/105065
IEEE
T. Staničić i M. Tudja, "Scanning elektronsko mikroskopsko istraživanje bakterijske penetracije kod početnog karijesa humane cakline", Acta stomatologica Croatica, vol.22, br. 3, str. 169-175, 1988. [Online]. Dostupno na: https://hrcak.srce.hr/105065. [Citirano: 05.12.2020.]

Sažetak
Bacterial penetration of enamel during initial manifestations of the carious process was studied in intact buccal enamel of 8 impacted third permanent molars. After cleaning them from organic plaque, each buccal plane was cut into five segments, one of them serving as a control specimen and the other four being fixed into slots on partial prostheses of our volunteers. The specimens were left in oral cavity for 7, 14, 21 and 28 days, where they were exposed to the action of cariogenic factors. After removal of the organic plaque, the specimens were broken in two and the bacterial penetration into enamel was observed on the fractured cross-section using scanning electron microscope. In 4 specimens from the group orally exposed during a 7-day period, individual coccoid or bacilliform bacteria were found to have penetrated 5 -1 0 µm deep. The number of bacteria and the depth of their penetration into enamel increased with the duration of oral exposition. Among the specimens oraly exposed during 28 days, bacteria were observed to be present both individually and in colonies, penetrating to the depth of 6 0 -9 0 µm. These bacteria could quite easily communicate with saliva and plaque via the pore system, which allowed them to produce metabolites, including lactic acids. This, in turn, allowed them to penetrate through the enamel, thus altering both the course and rate of the carious process progression.

Ključne riječi
caries; bacteria

Hrčak ID: 105065

URI
https://hrcak.srce.hr/105065

[hrvatski]

Posjeta: 329 *