[The resistence of conditioned enamel to the effect of cariogenic solution].

Abstract:

INTRODUCTION:Enamel surface around restoration is very sensitive to the effect of cariogenic solution. It is the consequence of the manner the cavity is prepared before restoration, the existence of marginal cracks around restoration, that is, irregular polishing of filling. OBJECTIVE:The aim of this study is to analyze the morphology of the marginal enamel surface around composite fifth class restoration after the application of cariogenic solution. METHOD:In this study 28 extracted molars were used. After the V class preparation of the buccal crown surface, teeth samples were divided into two groups. The first group was restored with the composite system Single Bond +Z250, applying the total etching technique. The second group was restorated with Prompt L-pop +Z250 and by applying self-etching primers. After the cavity restoration, teeth samples were kept in demineralising solution (lactic acid, pH 4.5, 0.1 M) at the temperature of 37 degrees C during 7 and 28 days. Control group samples were kept in distilled water during the experiment. The marginal enamel surface analysis was done by a scanning electron microscope. RESULTS:The achieved results showed that there was a denivelation and severe demineralization of the perimarginal enamel zone after 7 and 28 days, while on the remaining enamel there were some minor changes. Along the marginal composite/enamel joint there was the central type of demineralization of enamel prisms and preserved inter prismatic enamel.The existence of pores of different sizes and scattered enamel fractures was established. The marginal joint was mostly without any gaps in the first group samples, while in the second group samples there were narrow or wider edge gaps. CONCLUSION:After the application ofcariogenic solution, perimarrginal enamel showed conspicuous morphological damage in comparison to the remaining enamel surface.

journal_name

Srp Arh Celok Lek

authors

Dacić S,Dacić-Simonović D,Radicević G

doi

10.2298/sarh0808361d

subject

Has Abstract

pub_date

2008-07-01 00:00:00

pages

361-6

issue

7-8

eissn

0370-8179

issn

2406-0895

journal_volume

136

pub_type

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