Dear authors, Congratulations on your outstanding work. Please find some suggestions and doubts I believe can lead you to improve your manuscript.

Abstract
1) Is not clear in the abstract the number of subjects in each group and sex distribution, neither selection criteria for patients.

Methods
2) There is no sample size calculation.
3) Sex distribution between groups is not paired.
4) Authors should present in more detail the clinical oral condition of patients in the control group (number of teeth, maybe DMFT index)
5) Authors should describe in more detail the characteristics of the test food used in the comminution test. Hard foods may compromise reproducibility and the detection of subtle differences in masticatory performance tests. The use of only 10 cycles for performance test may also contributes to the difficulty in detecting subtle differences between participants.

Results
6) I miss control group composed of conventional prosthesis, since presenting worse masticatory performance than a group with natural dentition was expected. However, it would be interesting to assess the degree of improvement in relation to a group with conventional rehabilitation.
7) It seems surprising that 28% of the participants in the control group reported some degree of limitation on JFLS-20, considering the assumption that “none of the participants in the control group had complaints regarding mastication”.

Discussion
8) Authors should discuss the importance of the present findings regarding impact on nutrition, body weight, food choices, etc.