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Abstract
Summary
Aim of the study:
In the present study, the marginal quality of various fissure sealants was investigated. Different materials with varying cavity preparations were compared. In two of the six experimental groups, the whole procedure follows the recommendation based on the current guidelines. The aim of the study is to evaluate whether alternative methods for fissure sealings can achieve similarly good results.
Material and methods:
To establish standardized conditions, which are necessary for this in vitro study, 48 caries- and restoration-free human molars were randomly divided into six experimental groups (n=8). Each group differed in terms of the cavity preparation and the materials used. Following the approach of a prophylactic sealing, no preparation was done in the groups 1, 2 and 4. On the contrary, the groups 3, 5 and 6 were prepared with a fissure burr. The fissures of the molars were carefully expanded. The material used in the groups 1-3 is a glass ionomer cement. Additionally the molars of the group 1 and 3 received a conditioning using 37% phosphoric acid. In groups 4-6 a composite resin was used. For groups 4 and 5 a standardized resin fissure sealant was used. The cavities in group 4 were additionally pretreated with 37% phosphoric acid. Group 4 corresponds to the current guideline recommendation. In group 6 a low-viscosity composite resin with a cavity conditioned with 37% phosphoric acid and an adhesive system was used, also in accordance with current recommendation of the guidelines for pit and fissure sealants. All groups were subjected in a thermal cylcer (10.000 cycles at 5°C and 55°C) to simulate artificial aging. Impressions were made bevor and after the thermal loading to enable analysis of marginal quality under a scanning electron microscope.
Results:
The results showed that group 4 (Helioseal®, H3PO4, prophylactic fissure sealing) and group 6 (Venus® Diamond Flow, Syntac® Classic, H3PO4, extended fissure sealing) performed best in terms of marginal quality after thermal loading (p>0,05). Before thermal loading, group 1-3 (filled with the glass ionomer cement Ketac®) showed an adhesion quality of 100%. After thermal loading the quality decreased and the glass ionomer cement showed poorer outcomes in comparison with group 4 and 6. Group 5 (Helioseals®, preparation with fissure burr, no conditioning with phosphoric acid) had the worst performance overall. This refers to the marginal quality before (p<0,05) and after thermal loading (p<0,05).
Conclusion:
Based on this in vitro study, excellent marginal quality can be ensured with the use of the prophylactic fissure sealant Helioseal® in combination with prior enamel etching using 37% phosphoric acid. For extended fissure sealings that also function as a minimally invasive filling therapy, the low-viscosity composite resin Venus® Diamond Flow in combination with the Syntac® Classic adhesive system, also including phosphoric etching, delivered very good results and can also be recommended based on this study.
The groups treated with the glass ionomer cement Ketac®, showed inferior performance in comparison. However, since the initial marginal quality was good, the material can still be considered for temporary restorations or treatments in the meaning of the ART technique in developing countrys with limited options.
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Dates
Issued: 2025-11-20
Faculty
FB20:Medizin
Language
de
Keywords
FissurenversiegelungRandqualitätKompositGlasionomerzementminimal invasive FüllungstherapieKariesProphylaxeProphylaxemaßnahmenKariespräventionKonservierende ZahnheilkundeKinderzahnheilkundeAdhäsivsystemHeliosealVenus Diamond FlowSyntac ClassikKetac
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Magid, Yara: Randqualität verschiedener Fissurenversiegelungen in vitro. : 2025-11-20.
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Except where otherwised noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International