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)

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