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Orthognathic surgery

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https://www.readbyqxmd.com/read/27893635/orthognathic-surgery-with-simultaneous-autologous-fat-transfer-for-correction-of-facial-asymmetry
#1
Yu-Ching Wang, Christopher Glenn Wallace, Betty Chien-Jung Pai, Hui-Ling Chen, Yueh-Tse Lee, Yen-Chang Hsiao, Chun-Shin Chang, Yu-Fang Liao, Philip Kuo-Ting Chen, Yu-Ray Chen
BACKGROUND: Most patients treated with orthognathic surgery for facial asymmetry would value improvement in residual soft tissue asymmetry. Autologous fat transfer is widely used to augment facial soft tissue. We assessed the effect of combining orthognathic surgery with autologous fat transfer for treating patients with facial asymmetry. METHODS: In this retrospective study, 15 consecutive adults underwent combined orthognathic surgery and autologous fat transfer between January 2013 and December 2015...
November 21, 2016: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27893557/changes-in-upper-airway-volume-following-orthognathic-surgery
#2
Lillian Marcussen, Kasper Stokbro, Esben Aagaard, Peter Torkov, Torben Thygesen
Reduced volume of the internal skeletal dimensions of the face is 1 of the main causes of obstructive sleep apnea, and attention to patients' airways is necessary when planning orthognathic treatment. This study aims to describe changes in upper airway volume following virtually planned orthognathic surgery.A retrospective pilot study was designed with 30 randomly selected patients (10 men and 20 women, aged 23.1 ± 6.8 years, molar-relations: 15 neutral, 8 distal, and 7 mesial). Cone-beam computed tomography scans were performed before surgery and 1 week following surgery...
November 23, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27893551/mid-face-degloving-an-alternate-approach-to-extended-osteotomies-of-the-midface
#3
Anantanarayanan Parameswaran, Naveen Kumar Jayakumar, Manikandhan Ramanathan, Hermann F Sailer
Extended osteotomies for mid-face advancement require generous exposure of the anterior maxilla, nasal bones, infraorbital rims, orbital floor, zygoma, and the anterior third of the zygomatic arches. This cannot be obtained with an exclusive transoral approach. Hence, the surgeon is usually compelled to utilize supplemental cutaneous incisions that are a compromise on the purpose behind a cosmetic surgery. In order to alleviate the need for such compromise, the authors advocate the mid face degloving approach for extended osteotomies at Lefort II and Lefort III levels...
November 23, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27892450/orthognathic-surgery-for-the-correction-of-severe-skeletal-class-iii-malocclusion
#4
D Kafle, C Upadhayaya, N Chaurasia, A Agarwal
Skeletal Malocclusions results from the abnormal position of maxilla and mandible in relation with cranial base. These types of malocclusion are commonly treated by orthodontic teeth movement known as camouflage orthodontics. However severe skeletal malocclusions cannot be treated by orthodontics alone. Such cases need surgical intervention to align the position of the jaw along with orthodontic correction. This procedure is commonly known as Orthognathic Surgery. Orthognathic Surgery dates back to early eighteenth century but became popular on mid twentieth century...
January 2016: Kathmandu University Medical Journal (KUMJ)
https://www.readbyqxmd.com/read/27889535/does-temporomandibular-joint-pathology-with-or-without-surgical-management-affect-the-stability-of-counterclockwise-rotation-of-the-maxillomandibular-complex-in-orthognathic-surgery-a-systematic-review-and-meta-analysis
#5
Essam Ahmed Al-Moraissi, Larry M Wolford
PURPOSE: This study was designed to determine the stability of counterclockwise rotation (CCWR) of the maxillomandibular complex (MMC) in orthognathic surgery with or without surgical correction of coexisting temporomandibular joint (TMJ) pathology. MATERIALS AND METHODS: The authors implemented a systematic review and meta-analysis. A search of major databases through PubMed, EMBASE, and Cochrane CENTRAL was performed. Inclusion criteria were studies that analyzed CCWR of the MMC in regard to skeletal stability after orthognathic surgery in patients with or without pre-existing TMJ pathology that was or was not surgically corrected concomitantly...
November 4, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27866699/recording-the-trajectory-of-mouth-opening-and-closing-for-the-fabrication-of-an-occlusal-splint
#6
Jong-Eun Kim, Joo Hyun Kwon, Jee-Hwan Kim, June-Sung Shim
Various attempts have been made to transfer the transverse hinge axis and mandibular movement pattern to the mechanical articulator and to fabricate dental prostheses with the fewest errors. However, the occlusal adjustment of a dental prosthesis is always necessary to ensure a precise intraoral fit even when the facebow transfer technique is used in the cast mounting procedure. This is because the true hinge axis is not obtained when the facebow is applied to a patient who exhibits a variable mandible movement pattern rather than a single rotational axis...
November 17, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27856149/accuracy-of-three-dimensional-soft-tissue-prediction-for-le-fort-i-osteotomy-using-dolphin-3d-software-a-pilot-study
#7
C M Resnick, R R Dang, S J Glick, B L Padwa
Three-dimensional (3D) soft tissue prediction is replacing two-dimensional analysis in planning for orthognathic surgery. The accuracy of different computational models to predict soft tissue changes in 3D, however, is unclear. A retrospective pilot study was implemented to assess the accuracy of Dolphin 3D software in making these predictions. Seven patients who had a single-segment Le Fort I osteotomy and had preoperative (T0) and >6-month postoperative (T1) cone beam computed tomography (CBCT) scans and 3D photographs were included...
November 14, 2016: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27847739/epinephrine-induced-lactic-acidosis-in-orthognathic-surgery-a-report-of-two-cases
#8
Hee-Won Son, Se-Hun Park, Hyun-Oh Cho, Yong-Joon Shin, Jang-Ho Son
Submucosal infiltration and the topical application of epinephrine as a vasoconstrictor produce excellent hemostasis during surgery. The hemodynamic effects of epinephrine have been documented in numerous studies. However, its metabolic effects (especially during surgery) have been seldom recognized clinically. We report two cases of significant metabolic effects (including lactic acidosis and hyperglycemia) as well as hemodynamic effects in healthy patients undergoing orthognathic surgery with general anesthesia...
October 2016: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/27833339/submental-cervical-angle-perceived-attractiveness-and-threshold-values-of-desire-for-surgery
#9
Farhad B Naini, Martyn T Cobourne, Fraser McDonald, David Wertheim
AIM: The submental-cervical angle may alter as a result of mandibular orthognathic surgery and/or the ageing process and is therefore an important facial aesthetic parameter for comparative diagnosis and treatment planning. The purpose of this study was to undertake a quantitative evaluation of the influence of the submental-cervical angle on perceived attractiveness and threshold values of desire for surgery. STUDY DESIGN: The submental-cervical angle of an idealized profile silhouette image was altered incrementally between 90° and 130°...
December 2016: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/27833338/intraoperative-computed-tomography-in-bilateral-sagittal-split-osteotomy
#10
Jimoh Olubanwo Agbaje, Ahmed Sobhy Salem, Ivo Lambrichts, Luc Daems, Paul Legrand, Constantinus Politis
OBJECTIVES: The objective of the study was to show the importance of intraoperative computed tomography as an aid for ensuring inferior alveolar nerve safety during bilateral sagittal split osteotomy. MATERIALS AND METHODS: This study included ten patients who underwent bilateral sagittal split osteotomy procedure. All patients were treated for orthognathic reasons. The unerupted lower third molars, if present, were removed at least 6 months prior to Sagittal Split Osteotomy...
December 2016: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/27816732/efficacy-of-gastric-aspiration-in-reducing-postoperative-nausea-and-vomiting-after-orthognathic-surgery-a-double-blind-prospective-study
#11
Alan Robert Moreira Schmitt, Fabio Gambôa Ritto, João Gabriel Rodrigues Luz de Azevedo, Paulo José D'Albuquerque Medeiros, Monique Cristine Mattos de Mesquita
PURPOSE: To determine whether gastric aspiration performed after orthognathic surgery, in conjunction with a prophylactic protocol, could prevent postoperative nausea and vomiting (PONV). PATIENTS AND METHODS: Twenty-four consecutive patients treated at a single academic institution were included in this double-blinded randomized control trial and were divided into control (n = 12) and study (n = 12) groups. Patients underwent orthognathic surgery, and the same anesthetic protocol was used for the 2 groups...
October 12, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27815012/three-dimensional-printed-final-occlusal-splint-for-orthognathic-surgery-design-and-validation
#12
E Shaheen, Y Sun, R Jacobs, C Politis
Orthognathic surgery is indicated for the treatment of significant skeletal malocclusion and is normally prepared using conventional face bows combined with two-dimensional cephalometric analysis and manually made splints. With recent developments in oral imaging, more orthognathic surgeries are being planned using three-dimensional computer-aided design and manufacturing (3D CAD/CAM) software. The purpose of this study was to present a protocol for the design and 3D printing of final digital occlusal splints based on 3D planning of orthognathic surgery and to validate the accuracy of these splints...
November 1, 2016: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27806756/-comparison-between-computer-aided-simulation-and-dental-model-orthognathic-surgery-for-the-treatment-of-patients-with-mandibular-excess-and-facial-asymmetries
#13
S Y Shen, T T Chen, C P Lu, T F Jiang, X D Wang, G F Shen
Objective: To evaluate the results of the orthognathic surgery with computer aided simulation-three-dimensional(3D) printed surgical guide and dental model surgery in the treatmemt of patients with mandibular excess and facial asymmetries. Methods: The coordinate system was built in ProPlan CMF 2.0 software, and the horizontal plane consisted of PoL, PoR, OrL, middle sagittal plane through nasion point and basion point and the plane perpendicular to the horizontal plane, coronoid plane through nasion point and the plane perpendicular to the horizontal plane and middle sagittal plane...
November 9, 2016: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/27796598/soft-tissue-changes-after-a-mandibular-osteotomy-for-symmetric-skeletal-class-iii-malocclusion
#14
Seigo Ohba, Haruka Kohara, Takamitsu Koga, Takako Kawasaki, Kei-Ichirou Miura, Noriaki Yoshida, Izumi Asahina
The soft tissue profile is crucial to esthetics after orthognathic surgery. The aim of this study was to assess the soft tissue changes of the subnasal and submental regions more than 1 year after a sagittal split ramus osteotomy (SSRO) in patients with skeletal class III malocclusion. A total of 22 patients with mandibular prognathism were included in this study. Patients had lateral cephalograms before and more than 1 year after they underwent an isolated SSRO. Soft and hard tissue changes were assessed using the lateral cephalograms...
October 31, 2016: Odontology
https://www.readbyqxmd.com/read/27790586/predictability-and-reliability-of-different-anterio-posterior-skeletal-discrepancy-indicators-in-different-age-groups-a-cephalometric-study
#15
Rana Tiwari, Tarulatha R Shyagali, Abhishek Gupta, Rishi Joshi, Anil Tiwari, Priyank Sen
INTRODUCTION: The lateral cephalometric skeletal discrepancy indicators play a major role in diagnosing and preparing a case for orthognathic surgeries and the dentofacial corrections. AIM: The study was aimed to check the reliability and the predictability of different anterio-posterior skeletal discrepancy indicators in different age groups and to derive the most reliable indicator for the orthodontic diagnosis. MATERIALS AND METHODS: A cross-sectional study was conducted on a sample of 100 subjects including 29 adolescent (15 males and 14 females) and 71 adult (41 males and 30 females) subjects with the mean age of 19...
September 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27789268/prevalence-of-surgical-site-infections-following-orthognathic-surgery-a-double-blind-randomized-controlled-trial-on-a-3-day-versus-1-day-postoperative-antibiotic-regimen
#16
Clayton M Davis, Curtis E Gregoire, Ian Davis, Thomas W Steeves
PURPOSE: The purpose of this study was to determine the effect of a 3- versus 1-day antibiotic regimen on the rate of surgical site infection (SSI) in patients undergoing orthognathic surgery at a department of oral and maxillofacial surgery in Halifax, Nova Scotia, Canada. MATERIALS AND METHODS: A prospective, randomized controlled trial was conducted. All patients received 1 day of intravenous antibiotics after surgery. Then, patients were randomly distributed into groups that received 2 days of additional antibiotics (group A) or placebo (group B)...
October 3, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27780642/inferior-subapical-osteotomy-for-dentoalveolar-decompensation-of-class-iii-malocclusion-in-surgery-first-and-surgery-early-orthognathic-treatment
#17
F Hernández-Alfaro, M J Nieto, V Ruiz-Magaz, A Valls-Ontañón, I Méndez-Manjón, R Guijarro-Martínez
Increasing experience with alternative timing protocols in orthognathic surgery has given way to new surgical and orthodontic techniques to shorten treatment times, reduce biological costs, and improve the final outcome. A prospective evaluation of class III patients who received an inferior segmental osteotomy (ISO) for decompensation of significantly retroclined lower incisors in the context of 'surgery-first' (SF) or 'surgery-early' (SE) timing protocols was performed. Treatment was planned virtually. A thorough periodontal assessment was performed at baseline and periodically until debonding...
October 22, 2016: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27774441/changes-of-lip-morphology-following-mandibular-setback-surgery-using-3d-cone-beam-computed-tomography-images
#18
Seung Jae Paek, Ji Yong Yoo, Jang Won Lee, Won-Jong Park, Young Deok Chee, Moon Gi Choi, Eun Joo Choi, Kyung-Hwan Kwon
BACKGROUND: The aims of this study are to evaluate the lip morphology and change of lip commissure after mandibular setback surgery (MSS) for class III patients and analyze association between the amount of mandibular setback and change of lip morphology. METHODS: The samples consisted of 14 class III patients treated with MSS using bilateral sagittal split ramus osteotomy. Lateral cephalogram and cone-beam CT were taken before and about 6 months after MSS. Changes in landmarks and variables were measured with 3D software program Ondemand™...
December 2016: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27774440/frontal-augmentation-as-an-adjunct-to-orthognathic-or-facial-contouring-surgery
#19
Young-Wook Park
BACKGROUND: The dimensions and shape of the forehead determine the esthetics of the upper third of the face. Korean young people consider a broad and smooth, rounded forehead more attractive. As a result, frontal augmentation becomes more popular in patients with dentofacial deformities. Various surgical procedures and materials have been used in frontal augmentation surgery, with associated advantages and disadvantages. Silicone is a good candidate for frontal augmentation. The author presents two cases of esthetic frontal augmentation with a prefabricated silicone implant in female patients with dentofacial deformities...
December 2016: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27769722/the-use-of-patient-specific-implants-in-orthognathic-surgery-a-series-of-32-maxillary-osteotomy-patients
#20
Juho Suojanen, Junnu Leikola, Patricia Stoor
The use of virtual surgery, patient-specific saw and drill guides, and custom-made osteosynthesis plates is rapidly spreading from deformity surgery to orthognathic surgery. Most of the commercially available systems are using computer-aided design/computer-aided manufacture (CAD/CAM) wafers to produce patient-specific saw guides. However, most plate systems provided are still the conventional "in stock" mini plates that can be individually designed by pre-bending according to the stereolithographic model of the patient...
September 23, 2016: Journal of Cranio-maxillo-facial Surgery
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