Computer-assisted orthognathic surgery for correction of facial asymmetry: results of a randomised controlled clinical trial

Riu, Giacomo De; Meloni, Silvio Mario; Baj, A.; Corda, Andrea; Soma, Damiano; Tullio, Antonio

doi:10.1016/j.bjoms.2013.12.010

Cited by 66 publications

(61 citation statements)

References 22 publications

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“…The NiTi archwires were fabricated using Sur-eSmile technology according to the predicted surgical results. They showed favorable stability at the 11month follow-up and confirmed the results of previous studies, such as the study by De Riu et al, 58 regarding 3D virtual planning.…”

Section: Three-dimensional Technology For the Diagnosis Treatment Plsupporting

confidence: 88%

Facial asymmetry correction: From conventional orthognathic treatment to surgery-first approach

Nik

Gholamrezaei

Keshvad

2019

J Dent Res Dent Clin Dent Prospects

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The surgery-first approach (SFA), which proceeds without presurgical orthodontic treatment, is assumed to shorten the treatment course because the direction of post-surgical orthodontic tooth movement conforms to the normal muscular forces. Moreover, the regional acceleratory phenomenon (RAP), evoked by surgery, helps in tooth alignment and compensation in a faster way. Although SFA has definite advantages, especially in class III individuals, there is a lack of data about its indications in patients with facial asymmetry. In this article, we reviewed recently published articles on the treatment of asymmetric patients using the SFA. Different aspects, including the three-dimensional assessment of stability in different planes, approaches for fabrication of a surgical splint, predictability of the results, skills needed for bimaxillary surgery, indications as the treatment of choice for condylar hyperplasia, and combination with distraction osteogenesis in candidates with severe asymmetries were found to be the main topics discussed for patients presenting with facial asymmetry

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Section: Three-dimensional Technology For the Diagnosis Treatment Plsupporting

confidence: 88%

Facial asymmetry correction: From conventional orthognathic treatment to surgery-first approach

Nik

Gholamrezaei

Keshvad

2019

J Dent Res Dent Clin Dent Prospects

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“…In order to obtain a favorable surgical outcome, an accurate translation of the 3D planning to the patients was required. To asses skeletal changes in the course of the orthognathic treatment, three distinct approaches were used in previous studies: the calculation of linear and angular differences between reference points [ 5 , 18 – 23 ], the use of distance maps to evaluate the differences between the surface of the planned and postoperative jaw segments [ 24 – 27 ], and finally the computation of intra-class coefficients of reference points and reference angles [ 2 ].…”

Section: Discussionmentioning

confidence: 99%

A New 3D Tool for Assessing the Accuracy of Bimaxillary Surgery: The OrthoGnathicAnalyser

et al. 2016

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AimThe purpose of this study was to present and validate an innovative semi-automatic approach to quantify the accuracy of the surgical outcome in relation to 3D virtual orthognathic planning among patients who underwent bimaxillary surgery.Material and MethodFor the validation of this new semi-automatic approach, CBCT scans of ten patients who underwent bimaxillary surgery were acquired pre-operatively. Individualized 3D virtual operation plans were made for all patients prior to surgery. During surgery, the maxillary and mandibular segments were positioned as planned by using 3D milled interocclusal wafers. Consequently, post-operative CBCT scan were acquired. The 3D rendered pre- and postoperative virtual head models were aligned by voxel-based registration upon the anterior cranial base. To calculate the discrepancies between the 3D planning and the actual surgical outcome, the 3D planned maxillary and mandibular segments were segmented and superimposed upon the postoperative maxillary and mandibular segments. The translation matrices obtained from this registration process were translated into translational and rotational discrepancies between the 3D planning and the surgical outcome, by using the newly developed tool, the OrthoGnathicAnalyser. To evaluate the reproducibility of this method, the process was performed by two independent observers multiple times.ResultsLow intra-observer and inter-observer variations in measurement error (mean error < 0.25 mm) and high intraclass correlation coefficients (> 0.97) were found, supportive of the observer independent character of the OrthoGnathicAnalyser. The pitch of the maxilla and mandible showed the highest discrepancy between the 3D planning and the postoperative results, 2.72° and 2.75° respectively.ConclusionThis novel method provides a reproducible tool for the evaluation of bimaxillary surgery, making it possible to compare larger patient groups in an objective and time-efficient manner in order to optimize the current workflow in orthognathic surgery.

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“…In addition, the CAD/CAM repositioning guides can provide reliable approach that is an alternative to the use of arbitrary surgical splint for transferring the virtual plan into the operating room. 31 Finally, the maxilla and mandible are repositioned according to the surgical splints or repositioning guides and fixed by miniplates and screws. Recently, the navigation system has been used to accurately translate the virtual plan to actual operation.…”

Section: Surgical Splints and Repositioning Guidesmentioning

confidence: 99%

Three-dimensional computer-assisted surgical simulation and intraoperative navigation in orthognathic surgery: A literature review

Lin

2015

Journal of the Formosan Medical Association

110

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By incorporating three-dimensional (3D) imaging and computer-aided design and manufacturing techniques, 3D computer-assisted technology has been applied widely to provide accurate guidance for assessment and treatment planning in clinical practice. This technology has recently been used in orthognathic surgery to improve surgical planning and outcome. The modality will gradually become popular. This study reviewed the literature concerning the use of computer-assisted techniques in orthognathic surgery including surgical planning, simulation, intraoperative translation of the virtual surgery, and postoperative evaluation. A Medline, PubMed, ProQuest, and ScienceDirect search was performed to find relevant articles with regard to 3D computer-assisted orthognathic surgery in the past 10 years. A total of 460 articles were revealed, out of which 174 were publications addressed the topic of this study. The purpose of this article is to present an overview of the state-of-art methods for 3D computer-assisted technology in orthognathic surgery. From the review we can conclude that the use of computer-assisted technique in orthognathic surgery provides the benefit of optimal functional and aesthetic results, patient satisfaction, precise translation of the treatment plan, and facilitating intraoperative manipulation.

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Computer-assisted orthognathic surgery for correction of facial asymmetry: results of a randomised controlled clinical trial

Cited by 66 publications

References 22 publications

Facial asymmetry correction: From conventional orthognathic treatment to surgery-first approach

Facial asymmetry correction: From conventional orthognathic treatment to surgery-first approach

A New 3D Tool for Assessing the Accuracy of Bimaxillary Surgery: The OrthoGnathicAnalyser

Three-dimensional computer-assisted surgical simulation and intraoperative navigation in orthognathic surgery: A literature review

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