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Pregled bibliografske jedinice broj: 321782

Časopis

Autori: Brajdić, Davor; Krznarić Ozren Mika; Azinović, Zoran; Macan, Darko; Baranović, Marijan
Naslov: Influence of different etching times on dentin surface morphology
Izvornik: Collegium Antropologicum (0350-6134) 32 (2008), 3; 893-900
Vrsta rada: članak
Ključne riječi: dentin morphology; hybridization; etching
Sažetak:
The aim of this study is to investigate the influence of different etching times on demineralized dentin surface morphology using scanning electron microscopy and qualitative line microanalysis of chemical structure. Two sample groups, consisting of 30 first premolar teeth in each group, were established. Teeth were cut at the half-distance between the enamel-dentin junction and the pulp. The first group of specimens was etched for 10 seconds and the second group for 30 seconds. 37% ortophosphoric acid was used. SEM (scanning electron microscopy) was utilized to observe the following parameters: number and diameter of dentinal tubules, dentinal and intertubular dentinal surface percentage, appearance of the dentin surface porous zone containing smear layer and demineralized residual collagen particles with dentin demineralization products in acid globules, and dissolved peritubular dentin cuff. After calculating measurements of central tendency (X , C, Mo, SD), Kolmogorov-Smirnov and Student t-test were performed to confirm the quantitative results, and the χ ² ; ; - test was run to produce qualitative data. In contrast to the 10-second etching time, the increased etching time of 30 seconds resulted in the following findings: (1) an increased number of dentinal tubules (p<0, 05), (2) an increase in dentinal tubule diameter (p<0, 05), (3) an increase in dentinal tubule surface percentage (p<0, 001), (4) a decrease in intertubular dentinal surface percentage (p<0, 001), (5) appearance of dentin surface porous zone containing smear layer and demineralized residual collagen particles with dentin demineralization products in acid globules (p<0, 001), and (6) completely dissolved peritubular dentin cuff (p<0, 001). Therefore, different etching times using the same phosphoric acid concentration result in different morphological changes in demineralized dentin surface. Moreover, based on a comparison with current studies, prolonged etching time causes morphological changes to dentin surface. Such changes, have, in turn, negative effects on the dentin hybridization process.
Projekt / tema: 065-1080057-0429
Izvorni jezik: ENG
Current Contents: DA
Citation Index: DA
Ostale indexne publikacije: Abstracts in Anthropology;Anthropological Literature;Arts and Humanities Search;International Bibliography of the Social Sciences (IBSS);MEDLINE;Sociological Abstracts
Kategorija: Znanstveni
Znanstvena područja:
Kliničke medicinske znanosti,Stomatologija
Tiskani medij: da
Google Scholar: Influence of different etching times on dentin surface morphology
Upisao u CROSBI: Darko Macan (darkom@zagreb.kbd.hr), 13. Vel. 2008. u 13:31 sati



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