Authors : Akanksha Shukla, Gurkeerat Singh, Raj Kumar Singh, Varun Goyal, Nishant Gupta, Gaurav Saluja, Ritu Gupta
DOI : 10.18231/j.jco.2020.035
Volume : 4
Issue : 4
Year : 2020
Page No : 21-28
Introduction – This prospective clinical study was undertaken to analyze the three-dimensional facial soft tissue changes in bimaxillary protrusion extraction treatment cases using 3D structured light based scanner and facial photographs and to compare the two modalities.
Materials and Methods– 25 Indian adult patients of 18 - 23 years of age with dentoalveolar bimaxillary protrusion malocclusion and all four premolar extraction with maximum anchorage as treatment plan were taken. A pre-operative and post- operative extra oral 3D scan and 2D photographs were obtained for each subject. A prospective comparative evaluation of 12 lateral and 10 frontal soft tissue parameters was done.
Results – Significant changes were seen in distance of Sn, Pog, Ls, and Li from TVL, Ls and Li from E line and S line, Inf sulcus to H line, Naso- labial angle, H angle, and Merrifield Z angle (p<0>
Conclusion–Significant soft tissue profile changes are obtained from pre-treatment to post- treatment in all first four premolar extraction bimaxillary protrusion cases mainly in antero-posterior direction. The changes observed through evaluation of scans were similar to the ones obtained through photographs.
Keywords: Soft tissue profile changes, Extraction treatment, structured light based Scanner, Photographs, 3D versus 2D.