RT Journal Article T1 Root canal preparation of a commercial artificial tooth versus natural tooth—a microCT study A1 Reis, Tiago Filipe dos Santos Sousa A1 Barbosa, Claudia A1 Franco, Margarida Rosa Cabrita A1 Batista, Catarina Duarte A1 Alves, Nuno Manuel Fernandes A1 Castelo Baz, Pablo A1 Martín Cruces, José A1 Martín Biedma, Benjamín K1 Endodontics K1 MicroCT K1 TrueTooth® K1 3D printing K1 3D analysis K1 Endodontic training AB This study aimed to evaluate by microCT the preparation of the artificial teeth (ATs), TrueTooth®, versus natural teeth (NTs): (1) the time and number of pecking movements needed for preparation; (2) the root canal volume increase; (3) if the pulp-colored medium has any effect on the 3D analysis. Material and Methods: Artificial and natural maxillary molars were used. Fourteen AT distobuccal canals and fourteen NT buccal canals were used for the first and second aim and fourteen AT mesiobuccal canals for the third aim. Results: No statistically significant differences were observed regarding the time and number of pecking movements (p > 0.05); for the root canal volume increase, a statistically significant difference was observed (p < 0.05) with a higher mean value for NTs; however, in the group of ATs, there was a volume decrease in three cases. The AT mesiobuccal root canal mean volume increase was also negative. Conclusions: There are no differences between the time and number of pecking movements between NTs and ATs, so TrueTooth® can potentially be used in endodontic training. The volume increase between ATs and NTs was higher in NTs. However, some samples showed negative values, also seen in the AT mesiobuccal canal, confirming that the pulp-colored medium has an effect on the 3D analysis PB Multidisciplinary Digital Publishing Institute MDPI SN 2076-3417 YR 2023 FD 2023-08-18 LK https://hdl.handle.net/10347/44478 UL https://hdl.handle.net/10347/44478 LA eng NO Reis, T., Barbosa, C., Franco, M., Batista, C., Alves, N., Castelo-Baz, P., Martin-Cruces, J., & Martin-Biedma, B. (2023). Root Canal Preparation of a Commercial Artificial Tooth versus Natural Tooth—A MicroCT Study. Applied Sciences, 13(16), 9400. https://doi.org/10.3390/app13169400 NO Fundação para a Ciência e a Tecnologia. Lisboa, Portugal NO Programa Operacional da Região Centro ( CENTRO 2020 ). Portugal DS Minerva RD 9 jun 2026