2D image segmentation 2D images 2d image segmentation 3D reconstruction 3D ultrasonography Adaptation, Psychological Adult Computer aided design Cross-Sectional Studies Dentists Female Freehand 3D ultrasound Freehand 3d ultrasound scanner prototype Health Behavior Humans Image reconstruction Image segmentation Images segmentations Job Satisfaction Male Pose sensor Professional work stress Quantitative 3d reconstruction evaluation Repair Romania Salaries and Fringe Benefits Scanning Socioeconomic Factors Stress, Psychological Three dimensional computer graphics