Why is fluorapatite better than hydroxyapatite?
Fluorapatite is less soluble than hydroxyapatite which means that in acidic conditions, fluorapatite is stronger and more resistant to demineralization. However, this does not mean that fluorapatite toothpaste is better than hydroxyapatite toothpaste.
There is no doubt that fluoride works to fight cavities, just as multiple gold-standard studies have shown than hydroxyapatite works just as well or better than fluoride as an anti-caries agent.
Here's why: The amount of fluoroapatite, another mineral present in enamel, reduces the critical pH because fluoroapatite (Ca5(PO4)3F) is free of hydroxide. It is less soluble than calcium hydroxyapatite in acidic conditions.
Fluorapatite is inherently less soluble than hydroxyapatite, even under acidic conditions. When hydroxyapatite dissolves under cariogenic (acidic) conditions, if fluoride is present, then fluorapatite will form.
The resulting fluorapatite (Ca10(PO4)6F2) or the partially substituted fluorhydroxyapatite (Ca10(PO4)6(OH)2−xFx) are characterized by a lower solubility than HA at a given pH, thus protecting enamel against acidic dissolution.
Unlike fluoride, which carries a small risk of dental fluorosis when children ingest large amounts, hydroxyapatite has not been found to have similar negative effects. But while hydroxyapatite helps to protect and strengthen teeth at a deeper level, it is more vulnerable to acidity.
Is Fluoride stronger than Hydroxyapatite? Fluorapatite is less soluble than hydroxyapatite which means that in acidic conditions, fluorapatite is stronger and more resistant to demineralization. However, this does not mean that fluorapatite toothpaste is better than hydroxyapatite toothpaste.
Fluorapatite makes the outer tooth harder, tougher and more resistant to tooth decay. Whenever acid starts to eat away at the enamel, saliva bathes the teeth in a solution of fluoride, calcium and phosphorous.
But there's a new ingredient in town proven to be just as effective as fluoride and completely non-toxic. It's called hydroxyapatite. Hydroxyapatite toothpaste has replaced fluoride toothpaste as what I recommend to all of my patients.
The key difference between fluorapatite and hydroxyapatite is that fluorapatite contains calcium phosphate in association with fluoride groups, whereas hydroxyapatite contains calcium phosphate in association with hydroxide groups. Both fluorapatite and hydroxyapatite are phosphate-containing minerals.
Why is the chemistry of fluorapatite different than the chemistry of hydroxyapatite?
FAp has the same crystal structure as HAp except that the hydroxyl groups of HAp are replaced by fluoride ions in FAp.
... Therefore, it has more penetration into greater depths of the enamel and is suggested for prevention of caries [35]. This laser increases fluoride uptake [36] and in the presence of fluoride can convert hydroxyapatite into fluorapatite [37] .
Conclusion: Fluoride + nano-hydroxyapatite can be an alternative preventive procedure for demineralization of the enamel adjacent to orthodontic brackets.
Fluoride enhances tooth remineralization by accelerating the growth of fluorapatite crystals on the partially demineralized sub-surface crystals in the carious lesion. Fluoride adsorbs into this surface and attracts calcium ions.
Products featuring Nano-HAp focus on restoring and remineralizes teeth, compared to fluoride working on remineralizing teeth via our salvia. In regard to protecting teeth prevent tooth decay, Nano-HAp is less resistant to acid than fluoride.
Introduction: Fluoride plays a major role in inhibiting enamel dissolution and promoting fluorapatite formation. Porous hydroxyapatite (HAP) discs can be used as an enamel analogue in artificial demineralisation/remineralisation studies.
The ingredients should have low abrasivity, but at the same time, significantly whiten teeth. One of these ingredients is hydroxyapatite. Biomimetic hydroxyapatite particles are white opaque particles providing immediate repair of surface enamel defects.
Hydroxyapatite is a mineral form of calcium apatite (calcium phosphate), and is a key component of both teeth and bones. The exact composition can vary, but in general, hydroxyapatite crystals make up about 70% of the weight of our bones and 96% of the enamel on our teeth.
Yes, because it's so effective in remineralizing your enamel, hydroxyapatite can help reverse cavities and prevent new ones from forming! Check out this article with studies compiled by Mark Burhenne, DDS (of Ask the Dentist) & Jacqueline Carcaramo, RDH.
Fluoride is another naturally occurring mineral that can help remineralize your teeth. It forms a stronger building block called fluorapatite, which makes your teeth more resistant to mineral loss.
Is nano hydroxyapatite better than hydroxyapatite?
Compared to HA, n-Ha is found to have superior properties such as increased solubility, high surface energy, and better biocompatibility.
Some studies have found that it can cause inflammation and damage DNA, while others have found no adverse effects. The lack of definitive data has led to a continued debate among scientists, regulators, and industry representatives.
Fluorapatite is by far the most common species in the apatite group. It occurs in almost all igneous rocks, during initial phases of paragenesis, as an accessory mineral, commonly in microscopic crystals, and may occur as very large bodies as late-magmatic segregations in alkaline igneous rocks.
fluorapatite, common phosphate mineral, a calcium fluoride phosphate, Ca5(PO4)3F. It occurs as minute, often green, glassy crystals in many igneous rocks, and also in magnetite deposits, high-temperature hydrothermal veins, and metamorphic rocks; it also occurs as collophane in marine deposits.
Contact of the fluoride present in fluorapatite phosphate rocks with a strong mineral acid mobilizes much of the fluoride to hydrofluoric acid (HF: boiling point, 19°C; Eq.
