A new model of customized maxillary guide for orthognathic surgery: Precision analysis
| Autor: | Flavio Henrique Real, Ana Karla da Silva Tabosa, Douglas Voss de Oliveira, Nayara Cristina Monteiro Carneiro, José Thiers Carneiro Júnior |
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| Rok vydání: | 2019 |
| Předmět: |
Molar
medicine.medical_treatment Orthognathic surgery Osteotomy 03 medical and health sciences 0302 clinical medicine Imaging Three-Dimensional Double support Vertical direction medicine Maxilla Humans Maxillary central incisor Orthodontics business.industry Orthognathic Surgical Procedures Orthognathic Surgery 030206 dentistry Otorhinolaryngology Surgery Computer-Assisted 030220 oncology & carcinogenesis Inclusion and exclusion criteria Computer-Aided Design Surgery Oral Surgery business Tomography X-Ray Computed |
| Zdroj: | Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery. 48(12) |
| ISSN: | 1878-4119 |
| Popis: | Purpose To evaluate the surgical accuracy of a new Maxillary Bone-Dental-Supported guide (MBDS) for osteotomy and maxillary positioning in orthognathic surgeries. Materials and methods The customized MBDS were prototyped through CAD-CAM technology (computer-aided design and manufacturing). The planning image (CT0) was superimposed on the computed tomography scan post-treatment (CT1) and the mean of positional differences between them were obtained tridimensionally at the axes: mediolateral (X), anteroposterior (Y) and vertical (Z). Results Eleven patients were selected according to the inclusion and exclusion criteria. The mediolateral movement showed the best precision, with a greater mean difference of 0.34 mm at the CI point (central incisor) and less than 0.02 mm at the RM point (right molar). In the vertical direction, the largest mean discrepancy found was 0.50 mm and on the y-axis, anteroposterior, was 0.74 mm, as well as two at the CI point. The skeletal SNA point, on the other hand, showed the smallest average discrepancies: 0.10 mm (x-axis), 0.03 mm (y-axis) and 0 mm (z-axis). Overall, 99.24% of the discrepancies found were less than 2 mm. Conclusion Our results suggests that the double support, osseous and dental, present in that new guide, favored the positional stability of the maxilla and promoted better control of its vertical axis. Furthermore, the function of an osteotomy guide increases the predictability and security of the surgical procedure. |
| Databáze: | OpenAIRE |
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