Neuromuscular Mandibular Position and Function following Orthognathic Surgery

2015 ◽  
pp. 132-135
Author(s):  
Norman S. Stern
Keyword(s):  
Orthognathic Surgery ◽  
Mandibular Position ◽  
And Function

scholarly journals Two-Stage Treatment of Facial Asymmetry Caused by Unilateral Condylar Hyperplasia

2014 ◽  
Vol 25 (3) ◽  
pp. 257-260 ◽  
Author(s):  
Samuel Porfírio Xavier ◽  
Thiago de Santana Santos ◽  
Erick Ricardo Silva ◽  
Ana Célia Faria ◽  
Francisco Verissimo de Mello Filho
Keyword(s):  
Orthognathic Surgery ◽  
Orthodontic Treatment ◽  
Facial Asymmetry ◽  
Two Stage ◽  
Condylar Head ◽  
Condylar Hyperplasia ◽  
And Function ◽  
Spontaneous Onset

Condylar hyperplasia (CH) is a rare, self-limiting process manifesting between the first and third decades of life. CH causes facial asymmetry and derangement of the occlusion. Management involves resection of the condylar head and orthognathic surgery. This paper describes the case of a 37-year-old woman with spontaneous onset of CH over a span of approximately 25 years. The condition was managed with resection of the condyle alone, which dramatically improved facial asymmetry and altered the occlusion within a few months of follow up. Orthodontic treatment was then carried out and the patient underwent orthognathic surgery after 3 years. The patient is currently satisfied with her appearance and function and there are no signs of recurrence.

scholarly journals Ankylosed joint replacement with custom total joint prosthesis and custom miniplates.

2020 ◽  
Vol 9 (6) ◽  
pp. e15963095
Author(s):  
Douglas Voss de Oliveira ◽  
José Thiers Carneiro Junior ◽  
Eber Coelho Paraguassu ◽  
Luis Raimundo Serra Rabelo
Keyword(s):  
Joint Replacement ◽  
Orthognathic Surgery ◽  
Total Joint Replacement ◽  
Joint Prosthesis ◽  
Accuracy And Precision ◽  
Custom Made ◽  
History Of ◽  
Suitable Treatment ◽  
Cutting Guides ◽  
And Function

When managing a severely ankylosed joint in a patient with a history of multiple previous operations since the development phase, it is necessary besides the total joint replacement also the orthognathic surgery. Miniplates and total joint custom-made prosthesis are the state of arts in accuracy and precision; therefore use them concurrently in a complex surgery, such this, is a suitable treatment option. A 44-year-old male patient with bilateral  temporomandibular joint ankylosis where the TMJ architecture was completely replaced by a large bone mass was treated through orthognathic surgery with customized cutting guides and customized material for maxilla, jaw and chin fixation, in addition to the installation of two complete custom-made joint-prosthesis in one-stage surgery. This is the first report in the literature using custom Miniplates and Joint-Prosthesis for treatment of Ankylosis. The treatment was successful and the patient benefited from adequate aesthetics and function.

Effects of Orthognathic Surgery on Nasal Form and Function in the Cleft Patient

1992 ◽  
Vol 29 (6) ◽  
pp. 546-555 ◽  
Author(s):  
Larry M., Wolford
Keyword(s):  
Orthognathic Surgery ◽  
Treatment Approach ◽  
Nasal Reconstruction ◽  
Le Fort I Osteotomy ◽  
Patient Case ◽  
Form And Function ◽  
Common Problems ◽  
Case Presentations ◽  
And Function ◽  
Le Fort I

Management of common problems of nasal airway obstruction in cleft and noncleft patients by the subnasal approach through the maxillary Le Fort I osteotomy are discussed. The effects of maxillary surgical repositioning on the esthetics of the nose and upper lip are presented, as well as the sequencing and timing of orthognathic surgery and nasal reconstruction in the cleft patient. Case presentations illustrate the results of this treatment approach.

scholarly journals PSI-Guided Mandible-First Orthognathic Surgery: Maxillo-Mandibular Position Accuracy and Vertical Dimension Adjustability.

2021 ◽  
Author(s):  
Giovanni Badiali ◽  
Mirko Bevini ◽  
Ottavia Lunari ◽  
Elisa Lovero ◽  
Federica Ruggiero ◽  
...  
Keyword(s):  
Orthognathic Surgery ◽  
Surgical Planning ◽  
Three Dimensional ◽  
Patient Specific ◽  
Pitch Range ◽  
Surgery Patient ◽  
Novel Approach ◽  
Mandibular Position ◽  
3D Printed

Abstract In orthognathic surgery, patient-specific osteosynthesis implants (PSIs) represent a novel approach for the reproduction of the virtual surgical planning on the patient. The aim of this study is to analyse the quality of maxillo-mandibular positioning using a hybrid mandible-first mandibular-PSI guided procedure on twenty-two patients while the upper maxilla was fixed using manually-bent stock titanium miniplates. The virtual surgical plan was used to guide the design of PSIs and positioning guides, which were then 3D printed using biocompatible materials. A CBCT scan was performed one month after surgery and postoperative facial skeletal models were segmented for comparison against the surgical plan. A three-dimensional cephalometric analysis was carried out on both planned and obtained anatomies. A Spearman correlation matrix was computed on the calculated discrepancies, in order to achieve a more comprehensive description of maxillo-mandibular displacement. Intraoperatively, all PSIs were successfully applied. The procedure was found to be accurate in planned maxillo-mandibular positioning reproduction, while maintaining a degree of flexibility to allow for aesthetics-based verticality correction in a pitch range between-5.31 and +1.79 mm. Such correction did not significantly affect the achievement of planned frontal symmetry.

scholarly journals Orthognathic Surgery with anterior segmental osteotomy as alternative of treatment in patients with dento-skeletal deformity Class III AP maxillary deficiency with dental compensation. Case report.

2020 ◽  
Vol 9 (5) ◽  
pp. 423-429
Author(s):  
Carlos Millán-Golindano ◽  
◽  
Josmar García ◽  
Julio Tebres ◽  
Hans Cordsen ◽  
...  
Keyword(s):  
Orthognathic Surgery ◽  
Class Iii ◽  
Skeletal Deformity ◽  
Dental Compensation ◽  
Facial Changes ◽  
And Function ◽  
Le Fort I ◽  
Maxillary Deficiency ◽  
Skeletal Deformations ◽  
Anterior Posterior

Introduction: Orthognathic surgery is a routine procedure carried out by maxillofacial surgeons in patients with dento-skeletal deformations (DSD) with the objective of achieving functional and esthetical satisfactory results. However, some in cases, due to the decision of the patient or the orthodontic team, the occlusion is tried to be compensated with the intention of avoiding surgery, without optimal results. As a consequence, some extra procedures are required in the surgery to correct and obtain better results. Objective: The aim of this case is to propose the anterior segmental osteotomy (ASO) as alternative of treatment in patients with dento-skeletal deformity class III with maxillary and para-nasal deficiency which have been orthodontically compensated. Material and methods: A 18 years old female with DED Class III due anterior-posterior (AP) maxillary and paranasal deficiency and AP mandibular excess. The surgery was carried out through Le Fort I osteotomy in combination with a segmentary osteotomy at the expense of first premolars and bilateral setback sagittal split osteotomy (BSSO). Clinical and imageology post operatory controls were made during the first 6 months and at two years. Results: Through the realization of the anterior segmental osteotomy the correction of occlusal and transversal alterations of the patient maxilla were performed and additionally favorable facial changes were obtained. Conclusion: The initial orthodontic management of patients with DSD will influence the surgical procedures and the achievement of a balance between esthetics and function. This illustrates why the treatment of these patients must be multidisciplinary; the treatment that was chosen in this case was innovative and could be an alternative for the treatments of patients with DED Class III.

scholarly journals PSI-Guided Mandible-First Orthognathic Surgery: Maxillo-Mandibular Position Accuracy and Vertical Dimension Adjustability

2021 ◽  
Vol 11 (11) ◽  
pp. 1237
Author(s):  
Giovanni Badiali ◽  
Mirko Bevini ◽  
Ottavia Lunari ◽  
Elisa Lovero ◽  
Federica Ruggiero ◽  
...  
Keyword(s):  
Orthognathic Surgery ◽  
Surgical Planning ◽  
Three Dimensional ◽  
Patient Specific ◽  
Pitch Range ◽  
Surgery Patient ◽  
Novel Approach ◽  
Mandibular Position ◽  
3D Printed

In orthognathic surgery, patient-specific osteosynthesis implants (PSIs) represent a novel approach for the reproduction of the virtual surgical planning on the patient. The aim of this study is to analyse the quality of maxillo-mandibular positioning using a hybrid mandible-first mandibular-PSI-guided procedure on twenty-two patients while the upper maxilla was fixed using manually bent stock titanium miniplates. The virtual surgical plan was used to design PSIs and positioning guides, which were then 3D printed using biocompatible materials. A Cone Beam Computed Tomography (CBCT) scan was performed one month after surgery and postoperative facial skeletal models were segmented for comparison against the surgical plan. A three-dimensional cephalometric analysis was carried out on both planned and obtained anatomies. A Spearman correlation matrix was computed on the calculated discrepancies in order to achieve a more comprehensive description of maxillo-mandibular displacement. Intraoperatively, all PSIs were successfully applied. The procedure was found to be accurate in planned maxillo-mandibular positioning reproduction, while maintaining a degree of flexibility to allow for aesthetics-based verticality correction in a pitch range between −5.31 and +1.79 mm. Such a correction did not significantly affect the achievement of planned frontal symmetry.

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