Advantage of Dental 37% Phosphate Acid Etchant

Dental 37% Phosphate Acid Etchant is a key pre-treatment material in dental adhesive repair, mainly used for acid etching treatment of enamel and dentin. Its advantages can be summarized as follows:
1. Efficient etching capability
Rapid demineralization: A concentration of 37% can effectively dissolve hydroxyapatite in dental enamel within 15-30 seconds, forming a microporous structure (5-50 μ m deep) and significantly increasing the bonding surface area.
Uniform etching: forms a standard "honeycomb like" rough surface (especially for dental enamel), enhancing the micro mechanical retention of the resin adhesive.
2. Maximizing adhesive strength
The ideal choice for enamel bonding: After acid etching, the resin protrudes deep into the enamel micropores, and the bonding strength can reach 20-30 MPa, which is much higher than untreated enamel.
Good compatibility with composite resins: providing optimal wetting and permeability for light cured resins, reducing edge micro leakage.
3. Precise controllability

Enamel: Recommended 15-30 seconds (permanent tooth enamel usually takes 30 seconds, while deciduous or fluorosis teeth can shorten it).
Dentin: Recommended <= 15 seconds (to avoid excessive demineralization causing collagen fiber collapse).
Advantages of gel dosage form: most products are in the form of gel, which is easy to be confined to the target area to avoid accidental acid etching caused by liquid flow.
4. Easy to operate
Instant flushing can terminate the reaction: water flushing for 5-10 seconds can completely remove the acid corrosion agent, terminate the demineralization process, and ensure safe and controllable operation.
Compatible with multiple bonding systems: suitable for all acid etching bonding techniques (such as "acid etching rinse" technology), used in conjunction with most dental adhesives (such as fifth and sixth generation).
5. Stable clinical efficacy
Long term durability: The resin tooth interface after acid corrosion has high long-term stability, reducing the risk of restoration detachment
Reduce postoperative sensitivity (when used reasonably): Accurately controlling the time of dentin erosion can avoid excessive opening of dentinal tubules and reduce the incidence of postoperative sensitivity.
6. High security
Short term exposure is harmless: when used correctly, it has minimal irritation to the dental pulp (safe when the remaining thickness of the dentin is greater than 0.5mm).
Low residual risk: After thorough rinsing, there is no residual acidic substance, which does not affect subsequent bonding.