Import CBCT image volume from DICOM

Hello, i am starting in Slicer and i have some trouble.
I have done a cbct for implant surgery. I want to add de dcm data to slicer but when i load the 600 dcm imagins only let me see the last dcm loaded…
The problem is about dcm dicom? or because is very large ?
Tank you very much

Try the suggestions here: