Claudia Brizuela, Alejandra Chaparro, María Ignacia Valencia, María José Bendek, Henry F. Duncan, Juan J. Segura-Egea, Camila Alhucema, Valeria Ramírez
First published: 15 August 2025 https://doi.org/10.1111/iej.70017
Pulp friction: the diagnostic dilemma
This paper is an impressive display of scientific sophistication. The proteomic analysis, statistical modelling and bioinformatics are executed with a high degree of rigour, and the authors are to be congratulated for producing a complex, data-rich exploration of dentinal fluid in pulpitis. The sheer depth of analysis—down to hub proteins, pathways, and functional enrichment—demonstrates a mastery of modern biomedical research tools and is a reminder of how far dental science has advanced in technical capability.
Yet, for all the complexity, the study inevitably falls down on the very issue it seeks to resolve: the subjective nature of pulpitis diagnosis. The authors acknowledge that clinical signs and sensibility tests are poor surrogates for histology, but then rely on exactly those same criteria to classify their “control,” “mild,” “moderate” and “severe” pulpitis groups. This creates a circular logic: proteomic differences are being matched against categories that themselves lack objective gold standard validation. In truth, the only way to truly confirm the diagnostic accuracy of these protein markers would be to extract both healthy and diseased teeth and compare findings histologically—an approach that is no longer ethically feasible. Fancy diagrams and statistical cleverness cannot escape this fundamental limitation.
And so, the paper sits in a curious place: dazzling in its methodology but unable to deliver the definitive answers it aspires to. The ghosts of past histological studies—when teeth were harvested from less-than-willing sources, such as prisoners—still haunt modern endodontic research. Without that level of direct tissue confirmation, we are left wiser in technology but no closer to certainty in diagnosis. This study is valuable as an exploration of potential biomarkers, but the dream of an objective, chairside test for pulpitis remains, for now, tantalisingly out of reach.
