Cylinder geometry with full inside and altered tetha start/end

Hello, I’m looking forward into dynamically adding “pizza slice”-like shapes into the scene. The cylinder geometry with altered tetha length is a great solution, however it is holo on the inside, which is not a wanted feature. I was wondering, is there any geometry in threejs, which does fit the criteria, if so, which would it be? (Only asking for the name in threejs)

Hi!
For some ideas, have a look at this: End Caps of TubeGeometry - #16 by prisoner849