Hi
Thats gingival inflammation
Cause :-
1) As i can appreciate that there are deposits in and Around your teeth,these deposits are causing pain and inflammation around your teeth
Next Steps
Kindly visit nearby dental surgeon for physical examination and evaluation
Health Tips
At office:-
Advised oral prophylaxis/ cleaning and polishing that will remove the irritating factor.
At home/ self care:-
Advised warm salt water gargle
Advised to use soft bristles tooth brush
Advised to brush twice daily with proper brushing technique, interdental flossing and tongue cleaning
Hope your question is answered