Dave Ferguson demonstrates the need for a new dental clinic at the Roseburg Veterans Affairs Medical Center with a quick tour of the current one. The hospital’s chief of dentistry circles through the cramped clinic squeezed into a series of small rooms. Several times he pauses to yield the right of way to another clinic employee weaving through a maze of supplies and equipment. Space limitations and outdated equipment are the main reasons why Ferguson said he’s thrilled a much larger dental clinic is under construction to the west of the hospital’s emergency department. The $3.5 million clinic is scheduled …