These stains could be from mild fluorosis to developmental stains when the tooth was forming under the gumline. Microabrasion is a conservative way to remove some of the stains embedded in the outer layers of the enamel of the tooth. All these could be signs that the crown of the tooth is not strong enough to support normal chewing and thus is a candidate for a crown. Crowns are also done to prevent further fracturing of already compromised or weakened teeth. A crown is a porcelain or gold restoration that fits around the outside of the tooth that restores the tooth as close as possible back to its' original form and function, and can provide a wonderful cosmetic result.
Bridges are one solution to replace missing teeth.
When the teeth on both sides of the missing tooth would require crowning, then a fixed cemented bridge is an excellent treatment option to replace the missing tooth. When teeth on both sides of the missing tooth are present and have had virtually no restorations, a bridge is one option, however implants should also be considered. Implants can offer a solution to replace one tooth or many. Often it is the best option to replace missing teeth. Implants can also be used to stabilize full dentures, allowing patients to eat, smile and talk with confidence again.