Table A1 MHISS scale.

		Never	Rarely	Occasionally	Often	Always
1	I have difficulties opening my mouth	0	1	2	3	4
2	I have to avoid certain drinks (sparkling, alcohol, acidic)	0	1	2	3	4
3	I have difficulties chewing	0	1	2	3	4
4	My dentist has difficulties taking care of my teeth	0	1	2	3	4
5	My dentition has become altered	0	1	2	3	4
6	My lips are retracted and/or my cheeks are sunken	0	1	2	3	4
7	My mouth is dry	0	1	2	3	4
8	I must drink often	0	1	2	3	4
9	My meals consist of what I can eat and not what I would like to eat	0	1	2	3	4
10	I have difficulties speaking clearly	0	1	2	3	4
11	The appearance of my face is modified	0	1	2	3	4
12	I have trouble with the way my face looks	0	1	2	3	4

As you are probably aware, your systemic sclerosis might involve your face and your mouth. This questionnaire is aimed at assessing how much your face and mouth involvement affects your daily life.