Horizontal brushing at right angles to the vertical axis of the teeth result in the severest loss of tooth substance.

已知水平刷法（垂直牙齿）会造成最严重的牙齿表面磨耗。

youdao

Oral disease. Cigar smoking increases the risk of oral and dental disease, such as gum disease and tooth loss.

口腔疾病。抽雪茄会增加患有口腔疾病和牙病的风险，如牙龈疾病和牙齿脱落。

youdao

Cigar smoking increases the risk of oral and dental disease, such as gum disease and tooth loss.

抽雪茄会增加患有口腔疾病和牙病的风险，如牙龈疾病和牙齿脱落。

youdao

Prompt treatment can usually reverse symptoms of gingivitis and prevent its progression to more serious gum disease and tooth loss.

CNN: Gingivitis