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Research Article
Satoshi Rokutanda
Department of Oral and Maxillofacial Surgery, Juko Memorial Nagasaki Hospital, 6-17 Maruo Town, Nagasaki city, Nagasaki 852-8004, Japan
Corresponding Author
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Intraoral vertical ramus osteotomy (IVRO) is a surgical procedure for the treatment of mandibular prognathism and temporomandibular disorders. However, the improvement of temporomandibular disorders after surgery is considered to be due to the anterior and downward movement of the mandibular condyle, which may lead to condylar sag, and in the worst case, condylar luxation. In this retrospective cohort study, we examined factors potentially associated with condylar luxation. Univariate analysis indicated that condylar luxation was significantly associated with the following factors: magnitude of setback (P = 0.001); presence of temporomandibular joint (TMJ) symptoms (P = 0.002); occlusal cant correction ≥ 2 mm (P = 0.018); and mandibular condyle deformation (P < 0.001). The magnitude of setback (P = 0.035) and the presence of TMJ symptoms (P = 0.008) remained significant in the multivariate analysis. In the receiver operating characteristic curve, the cut-off value of the magnitude of setback for condylar sag and condylar luxation after IVRO was 3.25 mm. Thus, the risk of condylar luxation after IVRO is increased with a smaller magnitude of setback (≤ 3.25 mm) and the presence of TMJ symptoms. These factors should be carefully evaluated by surgeons during treatment planning for IVRO.
Keywords
Intraoral vertical ramus osteotomy (IVRO), temporomandibular joint (TMJ) symptoms, Univariate analysis
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CURRENT STATUS: Under Review
Version 1
Posted 04 Jan, 2021
No community comments so far
Editorial decision: Major revision
On 19 Feb, 2021
Reviews received
Received 03 Feb, 2021
Reviewers agreed
On 01 Feb, 2021
Reviewers agreed
On 26 Jan, 2021
Reviewers invited
Invitations sent on 20 Jan, 2021
Editor assigned
On 11 Jan, 2021
Editor invited
On 29 Dec, 2020
Submission checks complete
On 29 Dec, 2020
First submitted
On 20 Dec, 2020
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Subject Areas
Head & Neck Surgery
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This preprint is under consideration at Scientific Reports. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
Satoshi Rokutanda
Department of Oral and Maxillofacial Surgery, Juko Memorial Nagasaki Hospital, 6-17 Maruo Town, Nagasaki city, Nagasaki 852-8004, Japan
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Under Review
Version 1
Posted 04 Jan, 2021
No community comments so far
Editorial decision: Major revision
On 19 Feb, 2021
Reviews received
Received 03 Feb, 2021
Reviewers agreed
On 01 Feb, 2021
Reviewers agreed
On 26 Jan, 2021
Reviewers invited
Invitations sent on 20 Jan, 2021
Editor assigned
On 11 Jan, 2021
Editor invited
On 29 Dec, 2020
Submission checks complete
On 29 Dec, 2020
First submitted
On 20 Dec, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Head & Neck Surgery
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Intraoral vertical ramus osteotomy (IVRO) is a surgical procedure for the treatment of mandibular prognathism and temporomandibular disorders. However, the improvement of temporomandibular disorders after surgery is considered to be due to the anterior and downward movement of the mandibular condyle, which may lead to condylar sag, and in the worst case, condylar luxation. In this retrospective cohort study, we examined factors potentially associated with condylar luxation. Univariate analysis indicated that condylar luxation was significantly associated with the following factors: magnitude of setback (P = 0.001); presence of temporomandibular joint (TMJ) symptoms (P = 0.002); occlusal cant correction ≥ 2 mm (P = 0.018); and mandibular condyle deformation (P < 0.001). The magnitude of setback (P = 0.035) and the presence of TMJ symptoms (P = 0.008) remained significant in the multivariate analysis. In the receiver operating characteristic curve, the cut-off value of the magnitude of setback for condylar sag and condylar luxation after IVRO was 3.25 mm. Thus, the risk of condylar luxation after IVRO is increased with a smaller magnitude of setback (≤ 3.25 mm) and the presence of TMJ symptoms. These factors should be carefully evaluated by surgeons during treatment planning for IVRO.
Figure 1
This is a list of supplementary files associated with this preprint. Click to download.
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