1. But there's no evidence of advanced tooth decay or periodontitis.
但没有证据表明 他有严重蛀牙或牙周炎
2. Gingivitis can progress to periodontitis which can lead to bone resorption and eventually, tooth loss.
齿龈炎可以发展成牙周炎 然后发展成骨吸收 最后牙齿脱落
