Usages of shiseki
歯石 が 多い です。shiseki ga ooi desu.
There is a lot of tartar.
歯科衛生士 が 歯垢 と 歯石 を 確認します。shikaeiseishi ga shikou to shiseki o kakuninshimasu.
The dental hygienist checks for plaque and tartar.
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