Theobromine appears to help with repairing enamel and protecting teeth from further erosion by acids.

可可碱似乎能修复牙釉质并保护牙齿免收酸性物质的进一步腐蚀。

youdao

Due to the sea breeze erosion on the rocks year in year out, there is a row of steep precipices and cliffs forming like teeth.

因为岩石长年累月受海风腐蚀，形成了排牙山如牙齿般的险要绝壁地貌。

youdao

It might sound like the ideal formula for perfect teeth, but, actually, it's not. In fact, any one of those habits could increase your risk of dental erosion or decay.

听上去，这些都是让你拥有一口完美牙齿的理想方案，可事实并非如此。

youdao

Dental erosion involves demineralisation where teeth are attacked by acids and tooth enamel is consequently worn away.

BBC: Tea 'good for teeth'

The teeth, exposed by erosion and tides, can be as big as a human hand.

NEWYORKER: Bones of Contention

Erosion occurs when chemicals strip the mineral off the teeth.

CNN: Juices, tea and energy drinks erode teeth