Trauma, dental decay and root canal treatment may weaken the structural integrity of a tooth and may lead to the eventual loss of the tooth.
A dental crown is a restoration that covers the entire tooth, ultimately embracing and protecting the tooth. The crown can reduce the risk of crack propagation and therefore reduce the potential of tooth loss due to tooth fracture.
A bridge looks like your normal teeth and is used to replace one or more missing teeth. Bridges are support by the teeth on either side of the space.