ArticleClinical oral investigations2026
Impact of soy- and milk-based yogurts on enamel preservation: erosion and abrasion under simulated conditions.
Article in Clinical oral investigations, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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7 authors.
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Abstract
objectivesThis study evaluated the effect of soy-based and milk-based yogurts against enamel erosive-abrasive surface loss. MATERIALS AND
methodsNinety-eight bovine enamel specimens were randomly allocated to seven experimental groups (n = 14). Over seven days, specimens underwent six daily erosive cycles (0.05 M citric acid, pH 2.3, 2 min), interspersed with remineralizing solution (pH 6.5). Post-acid preventive measures consisted of immersion in milk-based yogurt (pH 4.4), soy-based yogurt (pH 4.7), or tap water for 3 min twice daily. Under erosion-abrasion conditions, specimens underwent simulated toothbrushing using stannous ions-containing fluoride toothpaste. Fluoride-free toothpaste served as abrasion control. Enamel surface loss was measured after 7 days using three-dimensional laser scanning microscopy. Calcium and phosphorus contents were quantified by optical emission spectrometry.
resultsAbrasion with a stannous ions-containing fluoride toothpaste combined with soy-based yogurt resulted in significantly lower enamel surface loss (7.9±3.3 μm) compared with the fluoride toothpaste only (12.2 ± 2.7 μm; p<0.05). Under erosion-only conditions, no significant differences were detected among preventive measures. Milk-based yogurt presented significantly higher calcium and phosphorus contents (Ca: 1434.1±190.3 µg/g; P: 1033.8±128.1 µg/g) than soy-based yogurt (Ca: 168.4±15.5 µg/g; P: 623.2±47.7 µg/g).
conclusionsThe tested soy yogurt may offer adjunctive protection in patients exposed to erosive and abrasive challenges. CLINICAL RELEVANCE: The tested soy yogurt significantly enhances anti-erosive efficacy of fluoride-stannous formulations, providing clinicians with an evidence-based dietary intervention to optimize preventive strategies against erosive enamel loss.
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