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European Archives of Paediatric Dentistry

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29.09.2021 | Original Scientific Article

Evaluation of developmentally hypomineralised enamel after surface pretreatment with Papacarie Duo gel and different etching modes: an in vitro SEM and AFM study

verfasst von: Y.-L. Lee, K. C. Li, C. K. Y. Yiu, D. H. Boyd, M. Ekambaram

Erschienen in: European Archives of Paediatric Dentistry | Ausgabe 1/2022

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Abstract

Purpose

This study aimed at investigating the surface morphology and nanotopography of normal enamel (NE) and developmentally hypomineralised enamel (HE) when subjected to various pretreatment protocols under scanning electron microscopy (SEM) and atomic force microscopy (AFM).

Methods

Sixteen NE, 16 creamy/white (CW) HE and 16 yellow/brown (YB) HE specimens sectioned from extracted hypomineralised first permanent molars (FPMs) were included in this study. They were randomly distributed into 12 experimental groups (n = 4). Each group involved the following: (1) deproteinisation with Papacarie Duo^® gel or no deproteinisation, and (2) the use of Scotchbond™ Universal Adhesive (Scotchbond) in self-etch (SE) mode or 37% phosphoric acid etchant. Subsequently, the surface morphology and nanotopography of pretreated enamel specimens were evaluated under SEM and AFM, respectively.

Results

SEM observation showed that deproteinisation with Papacarie Duo^® gel before phosphoric acid etching led to favourable etching patterns. This was consistent across all groups irrespective of the type of enamel specimen and the severity of hypomineralisation. In contrast, AFM results identified three factors that influenced surface parameters: (1) type of enamel specimen, (2) severity of hypomineralisation and (3) etching mode. YB HE recorded higher surface roughness values than CW HE and NE when subjected to the same pretreatment protocol. Deproteinisation and the application of Scotchbond in SE mode led to minimal topographic changes; however, acid etching was associated with an increase in surface roughness.

Conclusion

Deproteinisation with Papacarie Duo^® gel followed by acid etching contributed to improved etching patterns on HE.

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Titel: Evaluation of developmentally hypomineralised enamel after surface pretreatment with Papacarie Duo gel and different etching modes: an in vitro SEM and AFM study
verfasst von: Y.-L. Lee
K. C. Li
C. K. Y. Yiu
D. H. Boyd
M. Ekambaram
Publikationsdatum: 29.09.2021
Verlag: Springer Berlin Heidelberg
Erschienen in: European Archives of Paediatric Dentistry / Ausgabe 1/2022
Print ISSN: 1818-6300
Elektronische ISSN: 1996-9805
DOI: https://doi.org/10.1007/s40368-021-00671-w

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Evaluation of developmentally hypomineralised enamel after surface pretreatment with Papacarie Duo gel and different etching modes: an in vitro SEM and AFM study