Abstract: With the widespread application of digital technologies in dentistry，the measurement and analysis of three-dimensional data have become fundamental and critical aspects of digital diagnosis and treatment. Dental professionals need to correctly understand the specialized terminologies and concepts of digital oral medicine to effectively comprehend and apply the relevant digital technologies. This paper focuses on various common and trending professional terminologies used in three-dimensional data analysis in oral medicine in recent years，including terms related to three-dimensional data in oral medicine，terms associated with three-dimensional data overlapping，and terms pertaining to comparative analysis of three-dimensional data. This paper elaborately explains the meanings of these concepts and introduces the underlying technical principles，aiming to provide references for clinical applications in dentistry and related scientific research.

Key words: digital dental technology, three-dimensional data, registration, alignment, comparative analysis

摘要： 随着口腔数字化技术的广泛应用，三维数据的测量和分析成为数字化诊疗的基础和关键环节，口腔医生需要正确认识数字口腔医学的专业术语和概念，才能正确理解和应用相关数字化技术。文章针对近年来口腔医学三维数据分析中常用、热点的若干专业术语，包括口腔医学三维数据相关术语、三维数据重叠相关术语和三维数据对比分析相关术语等，详细阐述其概念涵义，介绍技术原理，以期为口腔临床工作和相关科研工作提供参考。

关键词: 口腔医学数字化技术, 三维数据, 配准, 对齐, 对比分析