Krishnakumar, MG (2013) 3D Soft Tissue Laser Scanning Technology to Evaluate Soft Tissue Changes after Orthognatic Surgery. Masters thesis, Ragas Dental College and Hospital, Chennai.
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Abstract
INTRODUCTION: Different technologies can be used to evaluate soft tissue changes after orthognathic surgery. Each technology comes with its own limitations, advantages, and costs. We compared 2D and 3D Soft tissue evaluation techniques. AIM: The purpose of this study is to evaluate the limitations, advantages and cost factor of two different techniques for evaluation of soft tissue changes after orthognathic surgery. METHODS: Pre surgical lateral cephalogram and laser soft tissue scan taken. Postsurgical cephalogram and laser scan taken 6 months after orthognathic surgery. Soft issue evaluation was done using Arnett and Bergman analysis. Both presurgical and postsurgical values compared to asses soft tissue changes. 2D and 3D soft tissue evaluation techniques evaluated to asses advantages and disadvantage of each technique. RESULT: Laser soft tissue scanner is an effective, more accurate, and convenient tool for soft tissue change evaluation. CONCLUSION: Advanced 3D laser scanner gives exact 3D information of a 3D object. Technique is easy, and needs less processing time. All measuring tools are incorporated in data reading software. Measurements show accuracy in micron level. Lateral cephalogram is cost effective, but it represents 2D aspect of a 3D object. Examiner level error in measurement is common in 2D soft tissue evaluation technique.
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | 3D Laser soft tissue scan ; Lateral cephalogram ; soft issue change assessment ; Orthognathic surgery. |
| Subjects: | DENTAL > Oral and Maxillofacial Surgery |
| Depositing User: | Subramani R |
| Date Deposited: | 13 Nov 2017 16:36 |
| Last Modified: | 13 Nov 2017 16:36 |
| URI: | http://repository-tnmgrmu.ac.in/id/eprint/3928 |
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