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Hydroxyapatite
Hydroxyapatite IS what tooth enamel is primarily made of.
Aliases (7)
Overview
What is Hydroxyapatite?
Hydroxyapatite is the calcium-phosphate mineral that makes up tooth enamel and bone. Synthetic nano- and micro-hydroxyapatite is used in toothpastes, bone graft substitutes, and as an oral calcium supplement.
Key Benefits
Remineralizes tooth enamel and reduces caries (a fluoride-free alternative), reduces dentin hypersensitivity, supports bone graft and implant integration, and provides bioavailable calcium and phosphate for skeletal health.
Mechanism of Action
Provides calcium and phosphate ions that integrate into the apatite crystal lattice of enamel and bone, plugging microcavities and dentinal tubules. In bone repair it serves as an osteoconductive scaffold for osteoblast attachment and new bone deposition.
Research Indications
What it is
- Hydroxyapatite (HA): Ca₁₀(PO₄)₆(OH)₂ — calcium phosphate biomineral - The same compound that makes up 96% of tooth enamel (rest is orga…
How it remineralizes teeth
1. Saliva normally contains calcium + phosphate — supports continuous low-grade enamel maintenance 2. Acid attack (food, bacterial fermen…
Comparison to fluoride mechanism
| Aspect | Hydroxyapatite | Fluoride | |--------|----------------|----------| | Active ingredient | Synthetic HA (same as native enamel) …
Plain English
HA is the mineral your teeth are made of. Putting synthetic nano-HA particles in toothpaste means you're literally rebuilding tooth ename…
Research Protocols
Disclaimer: These are commonly discussed research protocols and not medical advice.
What to Expect
- Week 1Tolerability and dose-response.
- Week 2-4Early effect window.
- Week 4-8Peak benefit assessment.
- Week 8+Cycle decision point.
Side Effects & Safety 2
Side Effects
- 1Almost none — calcium phosphate is biocompatible
- 2Mild gritty sensation (formulation-dependent)
When to Stop
- Allergic reaction to other formulation excipients (mint, SLS-free surfactants)
- Mild gum irritation from formulation, not from n-HA itself
- Safe — n-HA is not absorbed systemically; calcium phosphate minerals are physiologically present already
- None typically; monitor for gum response with new product
How was your experience with this compound?
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