Predicted versus executed surgical orthognathic treatment

Falter, Bart; Schepers, Serge; Vrielinck, Luc; Lambrichts, Ivo; Politis, Constantinus

doi:10.1016/j.jcms.2012.11.026

Cited by 8 publications

(5 citation statements)

References 12 publications

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“…In contrast to a previous study (Falter et al, 2013), no additional or adjustment of pre-planned secondary corrective surgery due to asymmetrical expansion was necessary in our population, probably because follow-up orthognathic surgery was already part of the initial treatment plans.…”

Section: Strengths Limitations and Future Researchmentioning

confidence: 58%

Bone-borne surgically assisted rapid maxillary expansion: A retrospective three-dimensional evaluation of the asymmetry in expansion

Huizinga

Meulstee

Dijkstra

et al. 2018

Journal of Cranio-Maxillofacial Surgery

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Section: Strengths Limitations and Future Researchmentioning

confidence: 58%

Bone-borne surgically assisted rapid maxillary expansion: A retrospective three-dimensional evaluation of the asymmetry in expansion

Huizinga

Meulstee

Dijkstra

et al. 2018

Journal of Cranio-Maxillofacial Surgery

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“…With the introduction of 3D virtual setups, it is possible to integrate the orthodontic setup with the virtual orthognathic planning. Falter et al [18] revealed that 13.5% of the orthognathic patients underwent a different surgical operation than was originally planned at the start of the treatment. Planning ahead of the orthodontic treatment should theoretically lead to less ad hoc treatment plan changes and a more predictable treatment outcome.…”

Section: Introductionmentioning

confidence: 99%

Virtual setup in orthodontics: planning and evaluation

et al. 2019

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Objectives The purpose of this study was to evaluate the clinical accuracy of virtual orthodontic setups by using a new CBCTbased approach. Materials and methods Ten patients who underwent pre-surgical orthodontics were included in this study. Pre-treatment and presurgical cone-beam CT (CBCT) scans and digital dental models were available. The pre-treatment digital dental model was used to create an orthodontic virtual setup. The digital dental models were fused with the corresponding CBCT scans, and the two CBCT scans were aligned using voxel-based matching. Moving each individual tooth from the virtual setup to the final outcome allows the calculation of the accuracy of the virtual setup by using an iterative closest point algorithm. Differences between virtual setup and final outcome were recorded as well as the ICC between two observers. Results The inter-observer variability showed a high level of agreement between the observers. The largest mean difference between observers was found in the cranial/caudal direction (0.36 ± 0.30 mm) and the roll rotation (1.54 ± 0.98°). Differences between the virtual setup and final outcome were small in the translational direction (0.45 ± 0.48 mm). Rotational mean differences were larger with the pitch of the incisors (0.00 ± 7.97°) and molars (0.01 ± 10.26°) as largest difference. Excessive extrusion of all upper teeth and more anterior movement than planned were seen for both upper and lower arch. Lower molars showed less extrusion. Clinical relevance The data of this study can be used to obtain more insight in the accuracy and achievability of orthodontic virtual setup. Tooth movement can now be studied in more details which can lead to new insights.

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“…Instead of being fabricated just before the surgery, all of the planning can now be mapped out ahead of orthodontic treatment initiation [ 12 ]. A study by Falter et al [ 13 ] revealed that one in seven orthognathic patients (13.5%) underwent a different surgical procedure from that originally planned mainly because of facial aesthetic considerations or a negative overjet that did not change as expected in Class III patients. Other reasons for changing a treatment plan included not gaining sufficient width in the maxilla or having an open bite closure after surgically assisted rapid maxillary expansion (SARME) [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

“…A study by Falter et al [ 13 ] revealed that one in seven orthognathic patients (13.5%) underwent a different surgical procedure from that originally planned mainly because of facial aesthetic considerations or a negative overjet that did not change as expected in Class III patients. Other reasons for changing a treatment plan included not gaining sufficient width in the maxilla or having an open bite closure after surgically assisted rapid maxillary expansion (SARME) [ 13 ]. Pre-treatment virtual planning of the presurgical orthodontic treatment could lead to fewer treatment plan changes and a more predictable treatment outcome.…”

Section: Introductionmentioning

confidence: 99%

Operator Performance of the Digital Setup Fabrication for Orthodontic–Orthognathic Treatment: An Explorative Study

Waard

Bruggink

Baan

et al. 2021

JCM

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The purpose of this study was to explore the operator performance of the fabrication of digital orthodontic setups integrated into cone beam computed tomography (CBCT) scans. Fifteen patients who underwent a combined orthodontic–orthognathic surgical treatment were included. The pre-treatment digital dental models and CBCT scans were fused, and four operators made virtual setups twice for all patients. Differences between the virtual setups were calculated by recording tooth crown movement from the pre-treatment model to the virtual setup. To examine performance, Pearson’s correlation coefficients, duplicate measurement errors, and inter-operator differences were calculated. For intra-operator performance, correlation values varied among tooth types, with mean correlation values from 0.66 to 0.83 for the maxilla and 0.70 to 0.83 for the mandible. For inter-operator performance, mean correlation values varied from 0.40 to 0.87 for the maxilla and from 0.44 to 0.80 for the mandible. Rotational mean differences exceeded the range of clinical acceptance (>2 degrees) at 18% for the maxilla and 20.8% for the mandible, and translational mean differences exceeded the range of clinical acceptance (0.6 mm) at 9.7% and 26% for the maxilla and mandible, respectively. The intra- and inter-operator performance of digital orthodontic setup construction for virtual three-dimensional orthognathic planning shows significant errors.

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Predicted versus executed surgical orthognathic treatment

Cited by 8 publications

References 12 publications

Bone-borne surgically assisted rapid maxillary expansion: A retrospective three-dimensional evaluation of the asymmetry in expansion

Bone-borne surgically assisted rapid maxillary expansion: A retrospective three-dimensional evaluation of the asymmetry in expansion

Virtual setup in orthodontics: planning and evaluation

Operator Performance of the Digital Setup Fabrication for Orthodontic–Orthognathic Treatment: An Explorative Study

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