The mucins subcategory of MG-1 (MUC5), highly associated with high-intensity dental caries cases, is usually tasked with increasing the salivary velocity, whereas the second category, MG-2 (MUC7), is mostly found in low-intensity cases of caries, triggering the agglutination of the microorganisms within the oral cavity, including the cariogenic bacteria [8,9]. The gene discussed is MUC5AC; the disease is dental caries.