Oral thrush is a fungal infection which occurs due to dry mouth, uncontrolled diabetes, weak immune system or patient on corticosteroids. Kindly consult a dentist in person for further suggestion. We need more investigations to decide upon treatment. You may need candid ointment until then. Rinse your mouth thoroughly with a mouth wash. You may consult me in person. Dental tips: - visit a dentist every six months. Scrub gently to clean your tongue with a tongue cleaner. Floss all your teeth inter dentally & brush twice daily, morning & night, up & down short vertical. Strokes, with ultra-soft bristles, indicator brush.