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. 2022 May 30;27(11):3511. doi: 10.3390/molecules27113511

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Figure A12 — Scanning electron microscopy (SEM) micrograph of Arkon at 20,000× magnification after six aging protocols: (A) Protocol 1—24 h, 37 °C, distilled water, (B) Protocol 2—3 months, 37 °C, artificial saliva, (C) Protocol 3—500 cycles, 5 °C and 55 °C, water, (D) Protocol 4—7500 cycles, 5 °C and 55 °C, water, (E) Protocol 5—1 week, 60 °C, 0.1 M NaOH, (F) Protocol 6—5 days, 55 °C, water.

Figure A12 — Scanning electron microscopy (SEM) micrograph of Arkon at 20,000× magnification after six aging protocols: (A) Protocol 1—24 h, 37 °C, distilled water, (B) Protocol 2—3 months, 37 °C, artificial saliva, (C) Protocol 3—500 cycles, 5 °C and 55 °C, water, (D) Protocol 4—7500 cycles, 5 °C and 55 °C, water, (E) Protocol 5—1 week, 60 °C, 0.1 M NaOH, (F) Protocol 6—5 days, 55 °C, water.