Dental Biofilm Growth & Acid-Challenge Simulator (2D)

This 2D companion runs the actual biology behind the 3D staged tour as a continuous simulation rather than a slideshow: biofilm density follows logistic growth (dB/dt = rB(1−B)) reset by a slider-controlled brushing interval, sugar exposures fire scheduled acid impulses that decay exponentially through saliva buffering — the classic Stephan curve — and a demineralization index integrates dissolution below the fluoride-adjusted critical pH against remineralization above it, so brushing frequency, sugar habits, fluoride exposure and salivary flow all measurably change whether the tooth trends toward a healthy balance or an active lesion.