Common errors in dental material testing
Most testing problems are not exotic. They are ordinary decisions made without recording why.
Specimen preparation is the usual source. Inconsistent curing distance, uncontrolled ambient light, and variation in finishing all move results more than the variable under study, and none of it appears in the final report.
Storage is the second. Time and medium between fabrication and testing change the answer, and studies that omit them cannot be compared with studies that do not.
The third is reporting. A result without its measurement conditions is not reusable. Anyone trying to reproduce or cite the work has to guess, and reviewers increasingly decline to.
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