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Biologic shaping is an adjunct to conventional crown lengthening. Conventional crown lengthening uses the existing margins of an old restoration or the cementoenamel junction (CEJ) of a non-restored tooth to determine the amount of bone removal necessary to establish adequate space for the biologic width. Creating proper space for the biologic width ensures that a new margin will not impinge upon the periodontal complex and reduces the likelihood of future inflammation. At times, a significant amount of bone must be removed, which can weaken the stability of the tooth or create weakened and vulnerable furcation areas. As more bone is removed from the furcation, the likelihood of future maintenance problems increases. As a result, it is critical to preserve as much bone as possible to support the tooth, especially in the furcation area. Biologic shaping moves the restorative margin away from the bone, minimizing the amount by which the crown must be lengthened to move the bone away from the restorative margin. This lecture examines the requirements for successful treatment using a team approach, based on a series of comprehensive periodontal and restorative cases. It will be apparent when doing combined periodontal and restorative treatment that the restorative dentist’s knowledge of materials and biology is paramount to the long-term success of these cases.