回複：我媽媽72歲，牙齒很差了。請問洗牙是否還對牙齒保健有效？她的牙床經常發炎。

Regular cleaning or deep clean always helps. However, the more important one is how your Mom's teeth and gum respond to the procedures. The treatment plan will be based on the reponse: more frequent cleanings, fillings, extractions, etc.

Good luck.