Periodontal crown lengthening can be used for esthetic enhancement in the presence of delayed passive eruption. Moreover, for teeth with subgingival caries, fractures or both, this treatment can establish a biological width and, if needed, a ferrule length facilitating prosthetic management. Crown-lengthening surgery involves various techniques, including gingivectomy or gingivoplasty or apically positioned flaps, which may include osseous resection. Authors of wound healing investigations have reported that an average of 3 millimeters of supragingival soft tissue will rebound coronal to the alveolar crest and can take a minimum of three months to complete vertical growth.
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