Romeo Giuseppe
Int J Esthet Dent. 2021 May 10;16(2):202-215.
The patient's facial characteristics play an essential role in achieving a customized smile restoration with appropriate individualized tooth shapes. By initially studying the patient's face, an approach can be determined to plan new individual tooth shapes to achieve a satisfactory outcome. The dental esthetic rehabilitation taking the facial proportion into account involves a complex planning process. To successfully realize such a project, several factors must be evaluated when designing the restoration, including dental alignment, crown dimension, color, occlusion, and facial proportions. Understanding all the anatomical parameters is essential to creating a harmonious esthetic restoration. The facial type of a patient is not only defined by facial symmetry, asymmetry or anthropology but also by an awareness of things through the physical senses (perception); the way things seem, look or feel (impression); and the perceiver's personal interpretation of esthetic excellence and attractiveness (beauty). Other aspects of the face that can be defined for the purposes of the restoration project include strong, dynamic, delicate, and calm.1,2 Nowadays, many patients seek a more attractive appearance. There are several techniques available to perform esthetically pleasing restorations. Ongoing research is being conducted in this area, for instance, the concept known as oral facial harmony.3,4 Dentists have been conducting orofacial analyses for decades, a process that involves applying mathematical rules and geometry principles to create parallel or perpendicular lines on a patient's face. The aim is to achieve harmony rather than symmetry in the redefinition of the smile, because people's faces are naturally asymmetric. The idea, then, is to create a balanced harmonious smile in relation to the patient's face, which is more important than trying to create a mathematically perfect symmetrical smile.5.
患者的面部特征对于实现具有合适个性化牙齿形状的定制化微笑修复起着至关重要的作用。通过最初研究患者的面部，可以确定一种方法来规划新的个性化牙齿形状，以获得令人满意的效果。考虑面部比例的牙齿美学修复涉及一个复杂的规划过程。为了成功实现这样一个项目，在设计修复体时必须评估几个因素，包括牙齿排列、牙冠尺寸、颜色、咬合和面部比例。了解所有解剖学参数对于创建和谐的美学修复体至关重要。患者的面部类型不仅由面部对称性、不对称性或人类学定义，还由通过身体感官（感知）对事物的认知、事物看起来、呈现或感觉的方式（印象）以及感知者对美学卓越和吸引力（美）的个人诠释来定义。为了修复项目的目的，可以定义的面部其他方面包括强壮、有活力、精致和平静。如今，许多患者寻求更具吸引力的外表。有几种技术可用于进行美观的修复。该领域正在进行持续的研究，例如，被称为口腔面部和谐的概念。几十年来，牙医一直在进行口面部分析，这个过程涉及应用数学规则和几何原理在患者面部创建平行线或垂直线。目的是在重新定义微笑时实现和谐而非对称，因为人们的面部天生不对称。那么，想法就是相对于患者的面部创造一个平衡和谐的微笑，这比试图创造一个数学上完美的对称微笑更重要。
