Firefighters late Monday afternoon battle a blaze that caused extensive damage to the dental office of Dr. Gary R. Schoene at 1265 Center Road in West Seneca. The cause remains under investigation. Vigilant Fire Chief David Koehler said the fire started outside, near a rear entrance to the 1 1/2 -story building. A gas meter at that location became involved in the fire, Koehler said, and flames worked through the wall and into the roof. Employees and patients of the dental practice fled safely.