Conclusions: Lactobacillus could promote the progression of dentinal caries for its adhering to dentin and producing lactic acid and causing dentin demineralization.

• 结论：乳杆菌因其对牙本质具较强粘附作用，且产酸能力强，可引起牙本质脱矿，在牙本质龋进展中发挥重要作用。