“…Since patients with elevated caries risk require receiving especial preventive regimen to reduce elevated incidence and severity of caries while those with low caries risk needs no additional preventive interventions and should have extended recall intervals. (Brad Rindal et al 2006). Caries risk assessment covers a variety of factors such as past caries experience, microbiological tests (salivary lactobacilli, mutans streptococci, and yeasts and salivary flow rate and buffer capacity), dietary habits, oral hygiene, and social factors (Hausen 2003).…”