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Marginal Integrity of Simplified Adhesive Strategies in Primary Teeth

OBJECTIVE: The aim of this research was to investigate the effect of simplified adhesive strategies (self-etch vs selective enamel etch and 10- vs 20-second adhesive application time) on the marginal integrity in primary molars. METHODS: Forty deep class-II cavities were prepared in 40 extracted pri...

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Autores principales: de Boer, Mia, Zimmermann, Marcus, Attin, Thomas, Tauböck, Tobias T., Hamza, Blend
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10658436/
https://www.ncbi.nlm.nih.gov/pubmed/37385864
http://dx.doi.org/10.1016/j.identj.2023.06.002
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author de Boer, Mia
Zimmermann, Marcus
Attin, Thomas
Tauböck, Tobias T.
Hamza, Blend
author_facet de Boer, Mia
Zimmermann, Marcus
Attin, Thomas
Tauböck, Tobias T.
Hamza, Blend
author_sort de Boer, Mia
collection PubMed
description OBJECTIVE: The aim of this research was to investigate the effect of simplified adhesive strategies (self-etch vs selective enamel etch and 10- vs 20-second adhesive application time) on the marginal integrity in primary molars. METHODS: Forty deep class-II cavities were prepared in 40 extracted primary molars. The molars were divided into 4 groups based on the applied universal adhesive strategy as follows: groups 1 and 2: selective enamel etch with 20- or 10-second application time and groups 3 and 4: self-etch with 20- or 10-second application time. All cavities were restored with a sculptable bulk-fill composite restoration. The restorations underwent a thermomechanical loading (TML, 5–50 °C, 2-minute dwelling time, ×1000; 400,000 loading cycles, 1.7 Hz, 49 N). Marginal analysis before and after TML was conducted with scanning electron microscopy and the marginal integrity of each restoration was calculated as a percentage of continuous margins. A beta regression model was adopted to statistically analyse the data with a consequent pairwise comparison. RESULTS: The mean marginal integrity (% ± SD) of the restorations for each tested adhesive strategy after TML was as follows: selective enamel etch/20 seconds = 85.4 ± 3.9, self-etch/20 seconds = 85.3 ± 5.2, self-etch/10 seconds = 80.1 ± 8.2, and selective enamel etch/10 seconds = 80.0 ± 8.5. The difference between both adhesive strategies was not statistically significant at the same application time. The difference between both application times within the same adhesive strategy was statistically significant (P ≤ .01). CONCLUSIONS: Universal adhesives applied either in selective enamel etch or in self-etch mode result in comparable marginal integrities when restoring class-II cavities in primary molars. Shortened adhesive application time (10 seconds) could lead to a reduction in the marginal integrity in comparison to the recommended application time of 20 seconds.
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spelling pubmed-106584362023-06-28 Marginal Integrity of Simplified Adhesive Strategies in Primary Teeth de Boer, Mia Zimmermann, Marcus Attin, Thomas Tauböck, Tobias T. Hamza, Blend Int Dent J Scientific Research Report OBJECTIVE: The aim of this research was to investigate the effect of simplified adhesive strategies (self-etch vs selective enamel etch and 10- vs 20-second adhesive application time) on the marginal integrity in primary molars. METHODS: Forty deep class-II cavities were prepared in 40 extracted primary molars. The molars were divided into 4 groups based on the applied universal adhesive strategy as follows: groups 1 and 2: selective enamel etch with 20- or 10-second application time and groups 3 and 4: self-etch with 20- or 10-second application time. All cavities were restored with a sculptable bulk-fill composite restoration. The restorations underwent a thermomechanical loading (TML, 5–50 °C, 2-minute dwelling time, ×1000; 400,000 loading cycles, 1.7 Hz, 49 N). Marginal analysis before and after TML was conducted with scanning electron microscopy and the marginal integrity of each restoration was calculated as a percentage of continuous margins. A beta regression model was adopted to statistically analyse the data with a consequent pairwise comparison. RESULTS: The mean marginal integrity (% ± SD) of the restorations for each tested adhesive strategy after TML was as follows: selective enamel etch/20 seconds = 85.4 ± 3.9, self-etch/20 seconds = 85.3 ± 5.2, self-etch/10 seconds = 80.1 ± 8.2, and selective enamel etch/10 seconds = 80.0 ± 8.5. The difference between both adhesive strategies was not statistically significant at the same application time. The difference between both application times within the same adhesive strategy was statistically significant (P ≤ .01). CONCLUSIONS: Universal adhesives applied either in selective enamel etch or in self-etch mode result in comparable marginal integrities when restoring class-II cavities in primary molars. Shortened adhesive application time (10 seconds) could lead to a reduction in the marginal integrity in comparison to the recommended application time of 20 seconds. Elsevier 2023-06-28 /pmc/articles/PMC10658436/ /pubmed/37385864 http://dx.doi.org/10.1016/j.identj.2023.06.002 Text en © 2023 The Authors https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Scientific Research Report
de Boer, Mia
Zimmermann, Marcus
Attin, Thomas
Tauböck, Tobias T.
Hamza, Blend
Marginal Integrity of Simplified Adhesive Strategies in Primary Teeth
title Marginal Integrity of Simplified Adhesive Strategies in Primary Teeth
title_full Marginal Integrity of Simplified Adhesive Strategies in Primary Teeth
title_fullStr Marginal Integrity of Simplified Adhesive Strategies in Primary Teeth
title_full_unstemmed Marginal Integrity of Simplified Adhesive Strategies in Primary Teeth
title_short Marginal Integrity of Simplified Adhesive Strategies in Primary Teeth
title_sort marginal integrity of simplified adhesive strategies in primary teeth
topic Scientific Research Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10658436/
https://www.ncbi.nlm.nih.gov/pubmed/37385864
http://dx.doi.org/10.1016/j.identj.2023.06.002
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