Hy
Yellow deposits are called the calculas that may be due to food particles and microbial contamination ..these can be removed by professional
Visit the dentist for scaling (tooth cleaning)
For bad odour pls do warm saline rinses 2-3 times daily for atleast 2-3 weeks
Or u can use chlorohexiediene mouthwash (1:1) twice daily
And brush properly after meal
Answered2020-06-24 11:54:16
Let others know if this answer was helpful