Beyond Measuring Wear: Are We Measuring What Really Matters?

Dental wear research remains methodologically heterogeneous, limiting comparison among studies and the correlation of laboratory findings and clinical performance.

This Short Communication draws on landmark publications, recent methodological studies, international guidance, and clinical evidence to examine laboratory wear protocols, analytical workflows, and the challenges on interpreting the outcomes.

Different wear protocols reproduce distinct degradation mechanisms and may impact the wear patterns and materials performance. Digital measurement workflows introduce variability through wear outcomes acquisition, alignment, reference-area selection, and data processing. Research outcomes, such as vertical loss, volumetric loss, antagonist wear, and structural damage represent distinct dimensions of the wear process and should be interpreted carefully. International standards addresses specific wear mechanisms and testing approaches but does not provide a contemporary framework linking the research question, experimental model, measurement workflow, and intended practical inference. A single universal wear-testing protocol is therefore unlikely to be appropriate for all research questions.

Experimental design should be aligned with the research question, ensuring that the selected degradation model, testing conditions, measurement methods, and outcomes appropriately support the intended interpretation. Studies should provide a clear rationale for the selected testing protocols and support the progressive validation of laboratory models through comparison with clinical evidence.

Advancing wear research requires greater methodological consistency and a clear understanding of what laboratory models can represent. The clinical relevance of laboratory findings depends on clearly defining the phenomenon under investigation, selecting appropriate outcomes, and recognizing the limits of extrapolating experimental results to clinical conditions.