Result: Before the irrigation: 100% patients had sputum; 87.5% had sore throat; 65.5% had difficulty in swallowing and 12.5% had bad breath.
Kết quả: Trước rửa, triệu chứng khạc đờm chiếm 100%; đau họng 87,5%; nuốt khó 65,5%; hơi thở hôi 100%.