Accuracy of maxillary positioning using computer-designed and manufactured occlusal splints or patient-specific implants in orthognathic surgery

Malenova, Yoana; Ortner, Florian; Liokatis, Paris; Haidari, Selgai; Tröltzsch, Matthias; Fegg, Florian; Obermeier, Katharina Theresa; Hartung, J.; Kakoschke, Tamara Katharina; Burian, Egon; Otto, Sven; Sabbagh, Hisham; Probst, Florian

doi:10.1007/s00784-023-05125-9

Cited by 3 publications

(1 citation statement)

References 34 publications

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“…Malenova et al use five points to describe the position of the maxilla. Quantification of the individual or cumulative error was not elaborated, nor was the methodology scrutinized [ 29 ].…”

Section: Discussionmentioning

confidence: 99%

Accuracy of Patient-Specific Implants in Virtually Planned Segmental Le Fort I Osteotomies

Kuehle,

Scheurer,

Bouffleur

et al. 2023

JCM

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(1) Background: In orthognathic surgery, segmental Le Fort I osteotomies are a valuable method to correct maxillary deformities or transversal discrepancies. However, these procedures are technically challenging, and osteosynthesis can be prone to error. (2) Methods: In this retrospective, monocentric cohort study, patients were enrolled who underwent a virtually planned segmental maxillary osteotomy during their combined treatment. Positioning and osteosynthesis were achieved by either a 3D-printed splint and conventional miniplates or patient-specific implants (PSI). The preoperative CT data, virtual planning data, and postoperative CBCT data were segmented. The deviation of all the segments from the desired virtually planned position was measured using the analysis function of IPS CaseDesigner. (3) Results: 28 Patients in the PSI Group and 22 in the conventional groups were included. The PSI group showed significantly lower deviation from the planned position anteroposteriorly (−0.63 ± 1.62 mm vs. −1.3 ± 2.54 mm) and craniocaudally (−1.39 ± 1.59 mm vs. −2.7 ± 3.1 mm). For rotational deviations, the pitch (0.64 ± 2.59° vs. 2.91 ± 4.08°), as well as the inward rotation of the lateral segments, was positively influenced by PSI. (4). Conclusions: The presented data show that patient-specific osteosynthesis significantly reduces deviations from the preoperative plan in virtually planned cases. Transversal expansions and vertical positioning can be addressed better.

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Section: Discussionmentioning

confidence: 99%

Accuracy of Patient-Specific Implants in Virtually Planned Segmental Le Fort I Osteotomies

Kuehle,

Scheurer,

Bouffleur

et al. 2023

JCM

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Outpatient orthognathic surgery: a prospective study of predictive factors for the length of hospital stays

Prevost,

Lauwers,

Varazzani

et al. 2023

Clin Oral Invest

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ObjectivesTransitioning from non-outpatient orthognathic surgery to outpatient surgery is a new challenge, and it is essential to target the eligible population as precisely as possible. Several authors describe series of outpatient orthognathic surgery but do not include the reasons for their success or failure.The main aim of this study was to identify the factors signi cantly associated with "successful" outpatient orthognathic treatment.The secondary objective was to determine the factors signi cantly associated with prolonged hospital stays (≥ 2 nights). Materials & Methods:A prospective cohort study including patients undergoing orthognathic surgery was conducted over a period of 1 year. We recorded the prognostic factors that contributed to successful outpatient treatment and prolonged hospital stays. These factors were evaluated by bivariate and multivariate analysis. Results:102 patients were included and the success rate of treatment was 65%. The variables that were isolated by multivariate analysis were: patients over the age of 22, procedures ending before 1 pm, brief operations, the absence of both postoperative vomiting and the administration of morphine. Conclusion:Patient selection, organisation of outpatient facilities and anaesthetic protocols contribute to the development of outpatient orthognathic surgery. These initial considerations provide a framework for our practice, but the considerations that predict the failure of outpatient surgery will need to be clari ed. Clinical Relevance:Orthognathic surgery can be performed on outpatient basis in selected cases. Age, the operative time, procedure end time, postoperative vomiting and the administration of morphine are associated with the success of outpatient care.

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OrthoCalc: The six degrees of freedom measurement workflow of rotational and displacement changes for maxilla positioning evaluation

Gao,

Gu,

Dessel

et al. 2024

Computer Methods and Programs in Biomedicine

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Accuracy of maxillary positioning using computer-designed and manufactured occlusal splints or patient-specific implants in orthognathic surgery

Cited by 3 publications

References 34 publications

Accuracy of Patient-Specific Implants in Virtually Planned Segmental Le Fort I Osteotomies

Accuracy of Patient-Specific Implants in Virtually Planned Segmental Le Fort I Osteotomies

Outpatient orthognathic surgery: a prospective study of predictive factors for the length of hospital stays

OrthoCalc: The six degrees of freedom measurement workflow of rotational and displacement changes for maxilla positioning evaluation

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