* A single bilateral edentulous area crossing the midline.
* Class I :Bilateral edentulous area most posteriorly . Mod 2 : two extra edentulous areas
* Class III- Edentulous area present between anterior and posterior natural teeth posteriorly. Mod I : one extra edentulous space
* Unilateral Edentulous area
* Bilateral Edentulous area
* Edentulous area between anterior and posterior natural teeth
* Class II : unilateral edentulous area present from most posteriorly. Mod 2: Extra 2 edentulous space
* Class III- Edentulous area present between anterior and posterior natural teeth. Mod 1 – one extra edentulous space present.
Reference : Google pictures
Dentowesome 