Antibiotics cannot cure a root canal infection because the source of the infection is inside the tooth where there is no blood supply; without blood supply there is no mechanism to deliver antibiotics. The cure is the complete shaping, cleaning and obturation (sealing) of the contaminated root canal space.
Thanks for the A2A, Joseph Boyle. You've already gotten plenty of answers, but since they differ a bit, I may as well cast my vote. According to http://Space.com The minimum distance from the Earth to Mars is about 54.6 million kilometers. The farthest apart they can be is about 401 million km.
When at its the nearest, it is approximately 206,669,000 km / 128.4 million miles or 1.381497 AU* from the Sun. This makes the mean distance of Mars from the Sun in the course of one complete revolution 227,939,100 km / 141.6 million miles or 1.523679 AU. * 1 AU (Astronomical Unit) is equivalent to the Earth's mean distance from the Sun. 227,936,640 km.