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. 2022 Jan 4;26(4):3651–3662. doi: 10.1007/s00784-021-04335-3

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© The Author(s) 2021, corrected publication 2022

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Fig. 1 — Polyurethane models with metal bar. Model A with missing teeth 46, 45, 44. Model B with missing teeth 45, 44, 34, 35. Model C with missing teeth 42, 41, 31, 32. Model D fully dentate