Making quality dentures is a blend of science and art. First, an accurate impression (mold) is made of the alveolar ridges on the top and bottom of your mouth. The base of the denture is made from this mold in a dental laboratory. Working together, the dentist and lab technician choose from among many different sizes and shapes of prosthetic teeth to re-create a natural-looking smile. When everyone is satisfied with the result, the temporary dentures are made in permanent form.
Throughout your lifetime, dentures will need to be replaced and adjusted which can become time consuming and expensive. It is a simple fact that dentures start to become loose and can break through normal activities such as talking, eating, etc. If a denture arch breaks, it may be possible to repair but in some cases it will need to be replaced entirely.
It was our impression from viewing the video that this technique is very dependent on the dentist's skill in performing the needed steps (more so than with conventional construction, primarily due to time constraints needed to accomplish certain steps, and accomplish them the first time, properly, before the denture materials set). So in that regard, likely the dentist who fabricated your mother's denture is due as much credit as the system itself.
An overdenture is a removable dental prosthesis that covers and rests on one or more remaining tooth roots. A removable partial denture is a dental prosthesis that replaces some teeth and is built around existing natural teeth. Both the overdenture and the removable partial denture may be connected to the remaining tooth roots or remaining natural teeth with anchors made of metal or plastic. These connections improve stability and the retention of both prostheses.