High-Resolution Laser Digitizing of Early Hominid Molars

早期原始人类臼齿的高分辨率激光数字化

• 批准号: 9013378
• 负责人: Steven Ward
• 金额: --
• 依托单位: Kent State University Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-06-15 至 1991-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9013378&HistoricalAwards=false
• 关键词: Resolution; Laser; Digitizing; Early; Hominid

Isolated teeth, and jaw fragments containing teeth, represent a significant proportion of early hominid fossils. These specimens are the focus of continuing interest and study, and will contribute to future debates on hominid phylogeny. Current methods of analysis of differences between teeth of purportedly different species are limited by current methodologies. This project will implement new three dimensional laser scanning technologies to record and analyze differences between postcanine dental crowns of known hominoid species and apply the same technology to the assessment of fossil molars. The data for each crown surface, which generally exceeds 33,000 discreet 3D surface points per crown, will be stored and analyzed in a modified computer assisted design system. Superimposition and simple finite element scaling techniques will be used to analyze surface data from the teeth. These data should prove instrumental in revealing new and useful phylogenetic as well as functional patterns in hominoid molars.

孤立的牙齿和含有牙齿的颌骨碎片代表了早期原始人类化石的很大一部分。这些标本是人们持续关注和研究的焦点，并将有助于未来关于原始人类系统发育的争论。目前分析据称不同物种的牙齿之间差异的方法受到当前方法的限制。该项目将采用新的三维激光扫描技术来记录和分析已知类人猿物种的犬后牙冠之间的差异，并将相同的技术应用于化石臼齿的评估。每个牙冠表面的数据通常超过 33,000 个离散的 3D 表面点，将在改进的计算机辅助设计系统中存储和分析。叠加和简单的有限元缩放技术将用于分析牙齿的表面数据。这些数据应该有助于揭示新的和有用的系统发育以及人科动物臼齿的功能模式。