A new method to orient a 3-dimensional facial model to natural head position: A preliminary report on accuracy and reproducibility, AA Yin, Y Dong, X Zhang, BQ Song, SZ Bai.

3dMD Customer Research, Dental, Normative Study, Oral and Maxillofacial, Orthodontics, Orthognathic

To establish and validate a novel method to orient a 3-dimensional (3D) facial model to natural head position (NHP) in a stereophotogrammetric system using a 2-dimensional frontal full-face photograph of NHP.

Network analysis of three-dimensional hard-soft tissue relationships in the lower 1/3 of the face: Skeletal Class I-normodivergent malocclusion versus Class II-hyperdivergent malocclusion. T Wang, K Nie, Y Fan, G Chen, K Xu, G Song, B Han, Y Pei, T Xu.

3dMD Customer Research, Dental, Multimodal (CT/CBCT), Oral and Maxillofacial, Orthognathic, Plastics

The aim of this study was to clarify the hard-soft tissue relationships of the lower 1/3 of the face in skeletal Class II-hyperdivergent patients compared with those in Class I-normodivergent patients using network analysis.

Fully automated landmarking and facial segmentation on 3D photographs. B Berends, F Bielevelt, R Schreurs, et al.

3dMD Customer Research, Computer Science | Computer Vision, Genetics, Medical, Computer Science, Craniofacial/Cleft, Oral and Maxillofacial, Orthodontics, Orthognathic, Plastics

A deep learning-based approach for automated landmark extraction from 3dMD facial photographs was developed and its precision was evaluated. The results showed high precision and consistency in landmark annotation, comparable to manual and semi-automatic annotation methods.

Effect of alar base cinch suture based on anatomic landmarks on the morphology of nasolabial region in patients after orthognathic surgery. W Zhang W, XJ Liu, ZL Li, Y Zhang.

3dMD Customer Research, Dental, Medical, 3dMDface, Oral and Maxillofacial, Orthognathic

This modified alar base cinch suture is more favorable for the postoperative nasal coordination and nasolabial morphology in patients who need mild to moderate maxillary advancement, and it has certain advantages in operability and objective accuracy.