» Articles » PMID: 33456700

Clinical Accuracy of 3D-Planned Maxillary Positioning Using CAD/CAM-Generated Splints in Combination With Temporary Mandibular Fixation in Bimaxillary Orthognathic Surgery

Overview
Publisher Sage Publications
Date 2021 Jan 18
PMID 33456700
Citations 4
Authors
Affiliations
Soon will be listed here.
Abstract

Study Design: The aim of this study was to evaluate the accuracy of 3-dimensional (3D)-planned maxillary positioning by using computer-assisted design (CAD)/computer-assisted manufacturing (CAM) splints combined with temporary mandibular fixation in bimaxillary orthognathic surgery. In orthognathic surgery, customized splints work sufficiently well to transfer preoperative planning into the operation site for transverse und sagittal positioning of the maxilla. The vertical positioning is more difficult due to the non-fixed mandibular reference. Therefore, the combined use of CAD/CAM splints and temporary mandibular fixation to the zygomatic region was applied for transferring the 3D-planned maxillary position into the operation site from 2012 until 2015 in our hospital.

Objective: In addition to the general accuracy, the precision should therefore be checked especially in the vertical plane compared to axial and sagittal plane.

Methods: In this retrospective study, we calculated the deviation of 5 occlusal landmarks of the maxilla in 35 consecutive patients by fusing preoperative 3D planning images and postoperative computed tomography scans after bimaxillary surgery.

Results: The overall median deviation of maxillary positioning between plan and surgical result was 0.99 mm. The accuracy of left-right positioning was median 0.96 mm. Anterior-posterior positioning of the maxilla showed a median accuracy of 0.94 mm. Just slightly higher values were determined for the upward-downward positioning (median 1.06 mm).

Conclusions: This demonstrates the predictability of maxillary positioning by using CAD/CAM splints in combination with temporary mandibular fixation in all 3 axes.

Citing Articles

Accuracy Analysis of Computer-Assisted and Guided Dental Implantology by Comparing 3D Planning Data and Actual Implant Placement in a Mandibular Training Model: A Monocentric Comparison between Dental Students and Trained Implantologists.

Ebeling M, Sakkas A, Schramm A, Wilde F, Scheurer M, Winter K J Pers Med. 2023; 13(7).

PMID: 37511650 PMC: 10381824. DOI: 10.3390/jpm13071037.


Accuracy of maxillary repositioning surgery in teaching hospitals using conventional model surgery.

Yari A, Hasheminasab M, Badri A, Tanbakuchi B, Fasih P Oral Maxillofac Surg. 2023; 28(2):935-943.

PMID: 37486423 DOI: 10.1007/s10006-023-01174-2.


Dental Root Injuries Caused by Osteosynthesis Screws in Orthognathic Surgery-Comparison of Conventional Osteosynthesis and Osteosynthesis by CAD/CAM Drill Guides and Patient-Specific Implants.

Pietzka S, Fink J, Winter K, Wilde F, Schramm A, Ebeling M J Pers Med. 2023; 13(5).

PMID: 37240877 PMC: 10221129. DOI: 10.3390/jpm13050706.


Steam-sterilized and degradable fused filament fabrication-printed polylactide/polyhydroxyalkanoate surgical guides for dental implants: Are they accurate enough for static navigation?.

Gielisch M, Heimes D, Thiem D, Boesing C, Krumpholtz M, Al-Nawas B Int J Bioprint. 2023; 9(2):655.

PMID: 37065653 PMC: 10090533. DOI: 10.18063/ijb.v9i2.655.

References
1.
Aboul-Hosn Centenero S, Hernandez-Alfaro F . 3D planning in orthognathic surgery: CAD/CAM surgical splints and prediction of the soft and hard tissues results - our experience in 16 cases. J Craniomaxillofac Surg. 2011; 40(2):162-8. DOI: 10.1016/j.jcms.2011.03.014. View

2.
Ellis 3rd E . Accuracy of model surgery: evaluation of an old technique and introduction of a new one. J Oral Maxillofac Surg. 1990; 48(11):1161-7. DOI: 10.1016/0278-2391(90)90532-7. View

3.
Hatamleh M, Turner C, Bhamrah G, Mack G, Osher J . Improved Virtual Planning for Bimaxillary Orthognathic Surgery. J Craniofac Surg. 2016; 27(6):e568-73. DOI: 10.1097/SCS.0000000000002877. View

4.
Mazzoni S, Badiali G, Lancellotti L, Babbi L, Bianchi A, Marchetti C . Simulation-guided navigation: a new approach to improve intraoperative three-dimensional reproducibility during orthognathic surgery. J Craniofac Surg. 2010; 21(6):1698-705. DOI: 10.1097/SCS.0b013e3181f3c6a8. View

5.
Hsu S, Gateno J, Bell R, Hirsch D, Markiewicz M, Teichgraeber J . Accuracy of a computer-aided surgical simulation protocol for orthognathic surgery: a prospective multicenter study. J Oral Maxillofac Surg. 2012; 71(1):128-42. PMC: 3443525. DOI: 10.1016/j.joms.2012.03.027. View