If you have a root canal done, most likely you'll need a crown. But if it was done through a bridge, there is already a crown on that tooth. A bride is just three or more crowns fused into one piece to replace a missing tooth. It is possible that doing a root canal through the brige will damage the bridge and the whole until may need to be replaced if that happens. But that's not common.
Yes, especially if it's a lower molar. Reason being, root canal teeth are "dead teeth:, as they have no nerve left, leaving them brittle and more susceptible to breakage.
A red crown
Yes, a lock does allow a canal boat, or any boat light enough in the matter, to raise and lower on a canal.
Lower Trenton Bridge was created in 1928.
Lower Shavertown Bridge was created in 1877.
The lower barriers of a canal lock are called ground paddles. These paddles help to let water in or out of the canal.
The red crown
Gate is the name given to the lower barrier of a canal lock. A Canal lock is used to lower and raise the water to move boats along a waterway.
one way is king Menes. he combined the upper Egypt crown with the lower Egypt crown to create the double crown.
Lower Humbert Covered Bridge was created in 1891.
The two kingdoms were unified and a new crown was made, the fusion of upper Egypt's crown and lower Egypt's crown.
the crown of upper egypt is white the crown of lower egypt is red