Clinical Assessment of the Effect of Hypericum perforatum Chewing Gum on Salivary Streptococcus mutans Count, pH, Plaque Index, and Gingival Bleeding: A Randomized Clinical Trial.
Jamali A; Hamishehkar H; Memar MY; Mousavi Kalajahi SE; Kouhsoltani M; Kosari-Nasab M · 2026 · Clinical and experimental dental research
WASTE classifies this as Negative / Null Result Report · AI classification, approximate
The study found no significant effect — useful as a negative control or null benchmark for your own design.
Abstract (excerpt)
Objectives Hypericum perforatum L. offers several beneficial effects, for example antioxidant, antitumor, wound healing. Our aim was to ascertain the effect of H. perforatum extract gum on salivary Streptococcus mutans count, pH, plaque…
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Metadata source: Europe PMC · DOI 10.1002/cre2.70285