What exactly is "vertical occlusions" and "no 2 malocclusions"?

Malocclusion: Malocclusion, bad bite, may be due to dental and/or skeletal malrelationships in all 3 planes of space, transverse (side to side), sagittal (front to back--Class II falls into this category, and vertical (top to bottom, as in open bite or deep overbite). See a specialist Orthodontist (initial exam usually free) for a discussion of your problems ad a description of possible treatment options.

VDO, malocclusion: VDO--- Vertical dimension of occlusion , refers to the superior-inferior relationship of the maxilla(upper arch) to the mandible(lower arch) , when the teeth come together. ClassII malocclusion is an orthodontic terminology used to describe the type of occlusion(bite) a patient presents with. It usually involves an overjet of upper incisors, deep overbite, deficient lower arch, and so on