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. 2020 Jun 9;109(1):139–148. doi: 10.1007/s10266-020-00531-x

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© The Author(s) 2020, corrected publication 2021

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Fig. 1 — Extent of standardized class II cavity. a Cross sectional view (vestibular or lingual), b occlusal view. The dotted line indicates the enamel-dentin-junction/cemento-enamel junction