Due to the presence of a rigid cell wall, bacteria maintain a definite shape, though they vary as shape, size and structure. When viewed under light microscope, most bacteria appear in variations of three major shapes: the rod (bacillus), the sphere (coccus) and the spiral type (vibrio). They measure about 0.25 Âµ and are the smallest cells known so far. 2  They were formerly known as pleuropneumonia-like organisms (PPLO). 3  Mycoplasma gallicepticum, with a size of approximately 200 to 300 nm are thought to be the world smallest bacteria.
Replacing 1 front tooth would cost about $50 so about $100 for 2 front teeth but the cost will vary depending upon your dentist and his experience level. To know the exact cost you must consult your dentist.
1 A permanently fixed replacement for one or more teeth is known as a dental bridge. 2  A Maryland or resin-bonded bridge (with a false tooth and metal side wings that are bonded to the back of the adjacent/anchor teeth) can cost $1,000-$1,200 for one false tooth with two metal wings or $1,700-$3,500 with two false teeth. It can cost $500-$1,500 or more per tooth for porcelain-fused-to-metal crowns; $600-$2,500 or more per tooth for gold or other metal alloys; and $800-$3,000 or more per tooth for all-porcelain.