Table 1.

The fourteen characteristics of the ideal “biofilm in situ device” classified in three main dimensions: technical, volunteer's comfort and economic.

TECHNICAL DIMENSION
1	Teeth pre-treatment is not necessary
2	Specific teeth are not necessary
3	No accidental unsticking
4	Allows eating
5	Easy withdrawal by the volunteer
6	Easy withdrawal of the sample
7	No contact with cheek /tongue
8	Allows salivary flow through the splint
VOLUNTEER'S COMFORT DIMENSION
9	Allows good oral hygiene
10	Good aesthetic
11	Little bulky
ECONOMIC DIMENSION
12	Adaptable on the 1st appointment
13	Easy placement at 1st time
14	Inexpensive material