With a higher pH level and being unlikely to erode the tooth, bottled water has been considered a safe alternative to acidic beverages. However, recent studies have reported some bottled water products in different countries to be acidic. The present paper aimed to examine the pH values of 42 bottled waters commercially available in Australia, using a pH meter and probe, and classify their risks to cause erosive tooth wear in comparison with the critical pH of enamel and dentine. Of the 42 bottled water samples collected, 81.0 and 73.8% were considered erosive to tooth dentine and enamel, respectively. Flavoured waters were the most acidic, followed by sparkling waters, spring waters, artesian waters, mineral waters, and alkaline waters. All sparkling waters and flavoured waters showed an erosive risk to the enamel and dentine. A portion of spring waters and artesian waters was also acidic enough to erode tooth structures. The findings of this work were of concern given the risk of sustaining erosive tooth wear from consuming bottled waters. Health promotion strategies including public awareness and education on oral health consequences related to the consumption of bottled water are needed. Future epidemiological and in vivo investigations are also warranted.

由于 pH 值较高且不太可能腐蚀牙齿，瓶装水被认为是酸性饮料的安全替代品。然而，最近的研究报告称，不同国家的一些瓶装水产品呈酸性。本文旨在使用 pH 计和探头检查澳大利亚市售的 42 种瓶装水的 pH 值，并与牙釉质和牙质的临界 pH 值进行比较，对它们引起侵蚀性牙齿磨损的风险进行分类。在收集的 42 个瓶装水样本中，分别有 81.0% 和 73.8% 被认为对牙齿牙本质和牙釉质有侵蚀性。调味水的酸性最高，其次是苏打水、泉水、自流水、矿泉水和碱性水。所有苏打水和调味水都显示出侵蚀牙釉质和牙本质的风险。一部分泉水和自流水的酸性也足以腐蚀牙齿结构。考虑到饮用瓶装水会导致牙齿腐蚀磨损的风险，这项工作的结果令人担忧。需要制定健康促进战略，包括对与饮用瓶装水有关的口腔健康后果的公众意识和教育。未来的流行病学和体内研究也是必要的。