People who have a “gummy” smile are afflicted by an appearance that has too little teeth and too much gums. A procedure called crown lengthening is performed to reshape gums and bone tissue. This is done to expose more of the teeth underneath.
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In some cases, dentists perform crown lengthening as part of more complex procedure that entails bridge and crown work. For example, a tooth may need to be “lengthened” to make bridge or crown procedure more effective.