**5. Conclusions**

Because of the great heterogeneity in terms of the image database and the type, results and architectures of neural networks, a standardized methodology is needed in order to increase the compatibility and robustness between studies.

**Author Contributions:** All of the authors have read and agreed to the published version of the manuscript. Conceptualization, M.P.-P.; methodology, M.P.-P. and J.G.V.; data curation, M.P.-P. and J.G.V.; writing—original draft preparation, M.P.-P.; writing—review and editing, C.H.M.-M.; visualization, M.P.-P., J.G.V., C.H.M.-M. and C.I.; supervision, C.I.; funding acquisition, C.H.M.-M. and C.I. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was funded by Asisa Dental S.A.U.

**Conflicts of Interest:** The authors declare no conflict of interest.

#### **References**


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