When a tooth is impacted, it is stuck. It is trying to grow, but another tooth — or bone — is in the way, so it cannot come through properly. This happens most often with wisdom teeth at the back of the mouth. The tooth may grow at an angle, press on the tooth beside it, or stay buried in the gum, and a dentist may need to take it out.

When a tooth is impacted當一顆牙齒impacted，it它 is stuck是卡住的。It它 is trying to grow正試著長出來，but但 another tooth — or bone另一顆牙齒——或骨頭 is in the way擋在路上，so所以 it它 cannot come through properly沒辦法順利長出來。This這 happens most often最常發生 with wisdom teeth智齒 at the back of the mouth在嘴巴後方的。The tooth這顆牙齒 may grow at an angle可能會斜著長，press on the tooth beside it壓迫旁邊的牙齒，or stay buried in the gum或一直埋在牙齦裡，and而 a dentist牙醫 may need to take it out可能需要把它拔出來。

The idea underneath is 'pressed in tightly', not 'had a big effect'. Though actually, doctors also use impacted for other things jammed in the body, but this entry is the tooth meaning. In news English, impact often means 'effect'; that is a different road, and it will mislead you here.

The idea underneath這個字底下的概念 is是 'pressed in tightly'「被緊緊卡住」，not不是 'had a big effect'「產生很大的影響」。Though actually不過事實上，doctors醫生 also use impacted也會用impacted for other things jammed in the body來形容身體裡其他卡住的東西，but但 this entry這個詞條 is the tooth meaning講的是牙齒的意思。In news English在新聞英語裡，impact這個字 often means常常是 'effect'「影響」的意思；that那 is是 a different road不同的方向，and而 it它 will mislead you here在這裡會誤導你。