Gaboutchian Armen V, Knyaz Vladimir A, Korost Dmitry V
Institute of Medicine, Peoples' Friendship University (RUDN), 117198 Moscow, Russia.
Phystech School of Applied Mathematics and Informatics, Moscow Institute of Physics and Technology (MIPT), 141701 Dolgoprudny, Russia.
J Imaging. 2021 Sep 12;7(9):184. doi: 10.3390/jimaging7090184.
Recent progress in imaging and image processing techniques has provided for improvements in odontological research in a variety of aspects. Thus, the presented method has been developed precisely in order to assess metrically 3D reconstructions of teeth. Rapidly and accurately obtained data of a wide range and appropriate density are sufficient enough for morphometric studies rather than tooth size assessments which are inherent to conventional techniques. The main contributions providing for holistic and objective morphometric analysis of teeth are the following: (1) interpretation of basic dental morphological features; (2) automated of orientational coordinate system setup based on tooth surface analysis; (3) new tooth morphometric parameters which could not be obtained through application of conventional odontometric techniques; (4) methodological novelty for automated odontomorphometric analysis pipeline. Application of tomographic imaging, which has been used for obtaining 3D models, expands the proposed method potential further through providing detailed and comprehensive reconstructions of teeth. The current study was conducted on unique material from the archaeological site of Sunghir related to the Upper Palaeolithic period. Metric assessments of external and internal morphological layers of teeth were performed in common orientation and sectioning. The proposed technique allowed more profound analysis of Sunghirian teeth which date back to the times of modern human morphology formation.
成像和图像处理技术的最新进展在多个方面推动了牙科学研究的进步。因此，所提出的方法正是为了对牙齿的三维重建进行测量而开发的。快速准确地获取大范围且密度合适的数据，对于形态计量学研究而言已足够，而不是像传统技术那样仅用于牙齿大小评估。为牙齿的整体和客观形态计量分析做出主要贡献的有以下几点：（1）对基本牙齿形态特征的解读；（2）基于牙齿表面分析自动设置定向坐标系；（3）通过传统牙测量技术无法获得的新的牙齿形态计量参数；（4）自动牙形态计量分析流程的方法新颖性。用于获取三维模型的断层成像技术的应用，通过提供牙齿的详细和全面重建，进一步拓展了所提出方法的潜力。本研究使用了与旧石器时代晚期相关的 Sungir 考古遗址的独特材料。对牙齿的外部和内部形态层进行了共同取向和切片的测量评估。所提出的技术使得对可追溯到现代人类形态形成时期的 Sungirian 牙齿进行更深入的分析成为可能。
