Abstract
Sodium trimetaphosphate (TMP) has a high enamel adsorption capacity, reducing its solubility, and it also exhibits a strong tendency to form complexes with cations due to the presence of a phosphate group in the TMP molecular structure. Through "acquired pellicle engineering" proteins such as hemoglobin is incorporated into acquired enamel pellicle (AEP) to enhance its acid-resistant capa…