Table 1.

Questionnaire on conditions that might be linked to MBS

Question item
Q1 Do you get tired easily?	Q23 Do you have an anterior open bite?
Q2 Are you good riser?	Q24 Can you talk clearly?
Q3 Are you good at exercising?	Q25 Are your lips often chapped?
Q4 Are you a restless sleeper?	Q26 Are your lips thick?
Q5 Do you have round shoulders?	Q27 Is your upper lip turned upward?
Q6 Does your nose become stuffed easily during the day?	Q28 Are your teeth visible between your upper and lower lips?
Q7 Does your nose become stuffed easily while sleeping?	Q29 Are your lips droopy?
Q8 Do you sneeze often?	Q30 Are your lips often cracked?
Q9 Do you often have a runny nose?	Q31 Are your gums often swollen?
Q10 Do you often have a nosebleed?	Q32 Are your gums easily stained?
Q11 Do you often have a sore throat?	Q33 Are your teeth easily stained?
Q12 Do you have swollen tonsils?	Q34 Do you often have canker sores?
Q13 Do you often fail to listen?	Q35 Do you have tartar build‐up?
Q14 Are you a habitual snorer?	Q36 Do your meals consist of small servings?
Q15 Is your mouth often dry?	Q37 Do you prefer soft food?
Q16 Do people tell you that you have bad breath in the morning?	Q38 Do you drink water during meals?
Q17 Do people tell you that you have bad breath during day?	Q39 Do you eat fast?
Q18 Is your mouth often open during the day?	Q40 Are you a picky eater?
Q19 Do you sleep with your mouth open?	Q41 Do you chew food well?
Q20 Can you keep your mouth closed for about 1 min?	Q42 Are you a noisy eater?
Q21 Do you have an over bite?	Q43 Do you keep your mouth closed when you eat?
Q22 Do you have an under bite?	Q44 Do you have food left in your mouth for a long time?

Abbreviation: MBS, mouth breathing syndrome.