Fluoride is widely present in the natural environment and plays a crucial role in dental health. The fluoride content in drinking water contributes to the promotion of dental health, but excessive intake can have adverse effects on overall health. This article starts with the fundamental properties of fluoride and focuses on fluoride in drinking water, providing a detailed explanation, particularly regarding Japan’s fluoride standards and the impact on children.
- 1 Presence and Origin of Fluoride Fluoride in drinking water primarily comes from the following sources:
- 2 Artificial addition:
- 3 Role of Fluoride in Dental Health Appropriate fluoride levels in drinking water contribute to dental health with the following main roles:
- 4 Fluoride Concentration Standards in Drinking Water
- 5 Caution Regarding Fluorosis and Excessive Intake
- 6 Impact on Children and Management
- 7 Sources of Fluoride Intake Beyond Tap Water
- 8 Comprehensive Approach to Fluoride Intake and Dental Health in Japan
- 9 The fluoride content in ONSENSUI 99 is 0.8 milligrams or less, making it safe for children to drink.
- 10 Laws related to fluoride contents:
Presence and Origin of Fluoride Fluoride in drinking water primarily comes from the following sources:
Natural leaching from ore deposits and strata:
When groundwater passes through ore deposits or strata, naturally occurring fluoride dissolves into the water.
Artificial addition:
In some regions, fluoride is intentionally added to tap water for dental health purposes.
Role of Fluoride in Dental Health Appropriate fluoride levels in drinking water contribute to dental health with the following main roles:
Prevention of cavities: Adequate fluoride intake strengthens tooth enamel, inhibiting the occurrence of cavities. Re-mineralization: Fluoride adheres to the tooth’s surface, promoting the re-mineralization of enamel.
Fluoride Concentration Standards in Drinking Water
Various countries have standards for fluoride concentration in drinking water, guiding water management. For example, in Japan, the Water Supply Law sets water quality standards, with fluoride concentration in tap water typically required to be 0.8 milligrams per liter or less.
Caution Regarding Fluorosis and Excessive Intake
While appropriate fluoride intake contributes to dental health, excessive intake can have adverse effects, leading to a condition known as fluorosis. Prolonged consumption of high-concentration fluoride can result in changes in the appearance of teeth, and in severe cases, abnormalities in bones.
Impact on Children and Management
Children, in particular, require careful management of fluoride intake as their teeth are still developing. In Japan, if the fluoride concentration in tap water exceeds 0.8 milligrams per liter, consumption by children is restricted. It is crucial to follow the guidance of dental professionals and manage fluoride intake in children cautiously.
Sources of Fluoride Intake Beyond Tap Water
Apart from drinking water, fluoride can be obtained from sources like toothpaste, mouthwash, food, and supplements. Proper management of these sources is essential to consider the overall fluoride intake.
Comprehensive Approach to Fluoride Intake and Dental Health in Japan
Fluoride is widely present in the natural environment and plays a vital role in dental health. While fluoride in drinking water contributes to dental health promotion, excessive intake can have adverse health effects. Japan has established standards based on fluoride concentration in tap water, with specific restrictions on intake for children.
Fluorosis can occur due to excessive intake, leading to changes in tooth appearance and bone abnormalities. Therefore, careful management of fluoride intake is necessary. In dental health, while fluoride is effective in preventing cavities, controlling the intake amount is a crucial element for maintaining overall health. A comprehensive approach is required, considering not only the fluoride concentration in drinking water but also intake from toothpaste, food, and other sources.
The fluoride content in ONSENSUI 99 is 0.8 milligrams or less, making it safe for children to drink.
The fluoride content in ONSENSUI 99 is maintained at 0.8 milligrams or less, ensuring that it is safe for children to consume. This concentration level aligns with established safety standards, mitigating any potential adverse effects associated with excessive fluoride intake. As a result, ONSENSUI 99 is a suitable and safe drinking option for children.
Laws related to fluoride contents:
Under the Water Supply Law in Japan:
Mineral water produced using raw water containing fluoride exceeding 0.8 mg/l: It is required to carry a label stating, “Children under seven years old should refrain from drinking this mineral water.”
Under the Japanese Food Sanitation Law:
If the fluoride concentration exceeds 1 mg/l: The label should indicate “Contains fluoride compounds.”
According to Codex:
If the fluoride concentration exceeds 2 mg/l: The label should state, “This product is not suitable for infants and children under seven years old.”
