During various tooth restorative procedures, maintaining healthy periodontium is an important condition for obtaining regular functioning and aesthetics. Thus, thorough knowledge of the correct anatomy of periodontium is essential. Crown lengthening procedures can be carried out for aesthetic enhancement as well as for prosthetic and restorative purposes. For teeth with sub-gingival caries, fractures or both, this treatment can establish biologic width and if needed, a ferrule length facilitating prosthetic management. This procedure involves various techniques including Gingivectomy or apically positioned flaps, which may include osseous resection. Some important factors needs to be evaluated before carrying out the procedure namely, biologic width, ferrule effect, amount of keratinized gingiva present and crown to root ratio. A series of five clinical cases have been presented in this article illustrating crown lengthening with ostectomy. Key words: Gingivectomy, biologic width, ferrule effect, crown lengthening.