Anterior guidance is of crucial importance for maintaining the health of oral and maxillofacial system. Inadequate anterior guidance has been demonstrated to result in tooth wear, mechanical complications of restorations, and temporomandibular joint disorders. At present, no consensus exists on quantitative standards for ideal anterior guidance due to considerable inter-individual variability. Nevertheless, it can be considered that ideal anterior guidance must adhere to five qualitative standards: (1) Anterior guidance must not disturb mandibular movement. (2) The inclination of incisal guidance must be steeper than that of the condylar guidance. (3) Symmetrical guidance of the anterior teeth and disocclusion of the posterior teeth during protrusion. (4) Lateral movement facilitated with canine protection or group function, with no interference on the balanced side. (5) Positive subjective experiences of patients in terms of aesthetics, pronunciation, and mastication. It is incumbent upon clinical dentists to prioritize the rationality of the anterior guide when designing and implementing anterior aesthetic restorations. In the event of a rational anterior guidance, there is a strong recommendation for digital occlusal function design and fully anatomical all-ceramic restorations. In cases where the anterior guidance is either irrational or ineffective, reconstruction is strongly advised during the aesthetic restoration.