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As you say about your gum condition and oral health, I think you have a gum infection. But do not worry. It is common and curable. You need a dental appointment as soon as possible. He or she will examine clinically and advice treatment (deep oral prophylaxis, gingival flap surgery). You can follow some instructions like brush twice a day, make sure all surface of teeth is covered properly. Use a soft brush and change it every two months. Use medicated mouthwash containing Chlorhexidine twice a day or you can use lukewarm water with a pinch of salt to rinse your mouth. And make sure to confirm an appointment with the dentist.
The Probable causes:
Poor oral hygiene.Investigations to be done:
Clinical examination and dental X-ray.Differential diagnosis:
Gingivitis, periodontitis.Probable diagnosis: