Maintenance of biologic width is essential to preserve the periodontal health and to remove any irritation that may damage the periodontium. The relationship between periodontal health and restoration of teeth is intimate and inseparable. Maintenance of gingival health constitutes one of the keys for tooth and dental restoration longevity. Encroachment of biologic width becomes of particular concern when considering the restoration of tooth that has fractured or been caries near the alveolar crest. The biological width dimension represent anatomical and physiologic tissue where the host respond to physical and environmental challenges through the initiation of inflammation and under the pathological conditions, tissue change. Restorative dentist need to take into account that these are responsive biologic tissue and that are impinging on them has consequences. The aim of this dissertation is to assess violation of biologic width and use of best surgical and non-surgical treatment modalities for the management of violation of biologic width.