The document discusses different types of esthetic failures that can occur with bridge restorations. Acute failures at the time of cementation include color mismatch, poor tooth contours, rough margins, metal display, improper pontic placement, and porcelain fractures. Delayed esthetic failures include gingival recession, subpontic tissue shrinkage, periodontal issues, tooth movement, and wear over time. Communication with the patient and managing expectations are also important to avoid esthetic complaints.