Fluoride is an excellent example of the importance of balance. Overall, the mineral is safe and effective against cavities, but you should be aware of the minor risks of too much fluoride consumption. Most of these concerns stem from taking in too much of the mineral, particularly at a ...
Fluoridation of drinking water was identified in the 1940s as a cost-effective method of prevention. In the mid-1970s, fluoride toothpastes became widely available. Since then, in high-income countries the prevalence of tooth decay in children has reduced whilst natural tooth retention in older ...
Since the primary effect of fluoride (F) on caries control is post-eruptive, any method of fluoride use, to be effective, should be able to maintain a constant fluoride concentration in the oral environment. Fluoridated water and F dentifrice are still regarded, respectively, as systemic and to...
It is also know as the tridax daisy or coat buttons and looks a lot like this plant. MARTIN GERTEN/AFP/Getty Images In the U.S., water companies add a small amount of fluoride -- between 0.8 and 1.2 milligrams per liter -- to drinking water as a way to protect teeth from decay...
Know-how,意思是“知识和技能”。 India is trying to use its buying power to get more technologicalknow-howfrom its foreign arms suppliers. 印度希望利用自己的购买力,从外国武器供应商那里得到更多的技术转移。 一项对18个国家里15岁中学生的测试发现, ...
The hair of the toothbrush should not be too hard because the one with soft hair is more effective(有效的). You can also think about something else, like a tongue cleaner, if you are more likely to use it. 相关知识点: 试题来源: 解析 D A D 反馈 收藏 ...
11) How cost-effective is dental sealant placement? This is a very difficult question to answer and one for which we don’t have a precise answer. But we can say: On the surface, a comparison of the cost of a sealant vs. a filling (around $50 vs. $120 or so, possibly more) is...
A simple change to get you started is to stop drinking tap water. Tap water contains fluoride, among other chemicals that interfere with the natural processes of the body. In this case, fluoride is added to prevent the growth of bacteria, keeping the water ‘clean’ and it has also shown...
s some fascinating studies that show that this is really effective at helping keep teeth strong and healthy. And this is also why I chose not to use fluoride in my products. Hydroxyapatite has many of the same upsides without the potential downsides that come with fluoride and is certainly ...
That has scared me but at least we now know what it is and we're moving forward. I'm trying to get the family to drink filtered water; to avoid metals, fluoride and chlorine, as well as things for the bath water. It's a learning experience. Thanks again for your suggestion. ...