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Orthognathic

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https://www.readbyqxmd.com/read/29927839/-refining-post-orthognathic-surgery-facial-contour-with-computer-designed-computer-manufactured-cad-cam-alloplastic-implants
#1
Jeffrey H Lee, Leonard B Kaban, Michael J Yaremchuk
BACKGROUND: Le fort I maxillary osteotomies and sagittal split mandibular osteotomies are performed to correct significant dentofacial deformities. The multidimensional skeletal movements, particularly those of large magnitude may result in contour irregularities and facial imbalances. METHODS: Three dimensional images were reconstructed from computed tomographic (CT) scans in patients unhappy with their appearances after Le Fort I advancement and/or bilateral sagittal split osteotomies (BSSO)...
June 14, 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29927828/the-u-shaped-maxillary-osteotomy-a-novel-resource-for-the-treatment-of-the-middle-third-facial-hypoplasia
#2
Héctor O Malagón, Fernan-Alejandra Ayala-Ugalde, Eugenio García-Cano, Jorge-Eduardo Chang-Contreras
The purpose of orthognathic surgery procedures is to manipulate the elements of the facial skeleton to reestablish normal anatomy and function. These elements could be repositioned with the technique known as Le Fort I osteotomy. This technique can be modified to be adapted on each patient, depending on the anomaly presented and the planned objective. The versatility, offered by the modifications of the Le Fort I osteotomy, has taken us to design one that allows the capability to correct the malar region hypoplasia in the same surgical procedure...
June 20, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29926347/review-of-superelastic-differential-force-archwires-for-producing-ideal-orthodontic-forces-an-advanced-technology-potentially-applicable-to-orthognathic-surgery-and-orthopedics
#3
REVIEW
Michael L Kuntz, Ryan Vadori, M Ibraheem Khan
PURPOSE OF REVIEW: Gentle and continuous loads are preferred for optimum orthodontic tooth movement. Nitinol, an alloy of nickel and titanium developed for the aerospace industry, found its first clinical applications in orthodontics because it has ideal load-deflection behavior. The purpose of this review is to elucidate the criteria for effective orthodontic mechanics relative to emerging Nitinol technology. The specialized materials with variable stiffness that were originally developed for orthodontics are increasingly attractive for in the temporomandibular joint, orthognathic surgery, and orthopedics...
June 20, 2018: Current Osteoporosis Reports
https://www.readbyqxmd.com/read/29905544/-justification-of-choice-of-the-position-of-the-reinforcement-element-of-a-glass-fiber-adhesive-tire-based-on-the-study-of-diagnostic-models-in-the-articulator-and-the-following-parallelmetric-research
#4
R Levandovsky, N Belikova, A Belikov, O Godovanets, G Nakashidze
The aim of the study was to develop the most optimal variant for placing the reinforcing element of a fiberglass splint with the mobility of the anterior teeth on the basis of a parallelometric study of the diagnostic models of the jaws depending on the type of occlusion and the degree of bone resorption. For the most optimal variant of the placement of the reinforcing element of the adhesive splint with orthognathic bite and deep incisal overlap, the front slope of the model was selected with the transfer of the reinforcing element of the adhesive splint onto the lingual surface...
May 2018: Georgian Medical News
https://www.readbyqxmd.com/read/29903558/computer-assisted-surgery-applications-in-dentistry-and-oral-and-maxillofacial-surgery
#5
REVIEW
Carlos G Landaeta-Quinones, Nicole Hernandez, Najy K Zarroug
Computer-assisted surgery (CAS) has evolved over time from its earliest introduction with utility in the Neurosurgical field. Within the past twenty years, optical navigation systems have emerged and developed into a great tool for the fields of dentistry and craniomaxillofacial surgery (CMF). Currently, CAS is useful for orthognathic and temporomandibular joint surgery, facial trauma, maxillomandibular reconstruction, implantology, and restorative dentistry. This article describes the indications of CAS in dentistry, with large emphasis on CMF...
July 2018: Dental Clinics of North America
https://www.readbyqxmd.com/read/29902418/propofol-versus-remifentanil-which-one-is-more-effective-in-reducing-blood-loss-during-orthognathic-surgery-a-randomized-clinical-trial
#6
Majid Eshghpour, Sahand Samieirad, Alireza Sharifian Attar, Hamed Kermani, Sadaf Seddigh
PURPOSE: Propofol and remifentanil are 2 useful drugs used in induced hypotensive anesthesia. The purpose of this study was to compare the effects of these drugs on intraoperative blood loss, transfusion requirements, and hemodynamic status during standardized orthognathic surgical procedures. MATERIALS AND METHODS: In this double-blind randomized clinical trial, 50 consecutive healthy patients with Class III skeletal deformity were candidates for bimaxillary orthognathic surgery at Qaem Hospital, Mashhad University of Medical Sciences (Mashhad, Iran), from November 2016 until December 2017...
May 21, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29895393/digital-cutting-guide-and-endoscopically-assisted-vertical-ramus-osteotomy-to-treat-condylar-osteochondroma-a-long-term-study
#7
L Huo, M-J Chen, C Yang, S-Y Zhang, J-S Zheng, Y Chen
We have introduced an effective treatment for mandibular condylar osteochondroma with a digital cutting guide and endoscopically-assisted vertical ramus osteotomy (VRO). Eleven patients with unilateral condylar osteochondroma, who did not require orthognathic surgery or had less than 3mm deviation of the chin and a stable occlusion, were treated during the period April 2013-January 2017 with a digital cutting guide and endoscopically-assisted VRO. Clinical data collected included the occlusion, facial contour, and maximum mouth opening (MMO)...
June 9, 2018: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29894467/one-year-relapse-of-mandibular-distraction-for-hemifacial-microsomia-using-masseteric-botulinum-toxin-type-a-injections
#8
Hong-Yu Yin, Chuan Wang, Zhi-Yong Zhang, Lei Shi, Lin Yin, Wei Liu, Shi Feng, Yi-Lin Cao, Xiao-Jun Tang
BACKGROUND: The relapse of hemifacial microsomia was thought to be highly related to the soft tissue envelope around the mandible angle mainly composed by masseter and medial pterygoid. According to the reason, we tried to apply masseter injection of type A botulinum toxin to weaken the soft envelope tension on the early stage post mandible distraction in adult HFM patients. METHODS: Eight patients diagnosed with HFM were studied and randomly assigned to an experimental or control group...
June 11, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29887198/comprehensive-consideration-and-design-with-the-virtual-surgical-planning-assisted-treatment-for-hemifacial-microsomia-in-adult-patients
#9
Peng Wang, Yu Wang, Zhen Zhang, Xiang Li, Bin Ye, Jihua Li
PURPOSE: Hemifacial microsomia (HFM) is a frequently encountered congenital malformation syndrome involving both hard and soft tissue. Various surgical methods have been described to correct the deformities of HFM in the literature. This study aims to evaluate the therapeutic efficacy for HFM with the assistance of virtual surgical planning (VSP) and 3-dimensionally printed surgical templates. MATERIALS AND METHODS: From January 2010 to January 2016, a total of 46 patients were referred to the study...
May 9, 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29887197/corrigendum-to-automatic-repositioning-of-jaw-segments-for-three-dimensional-virtual-treatment-planning-of-orthognathic-surgery-journal-of-cranio-maxillofacial-surgery-45-9-2017-1399-1407
#10
Rodrigo Mologni Gonçalves Dos Santos, José Mario De Martino, Luis Augusto Passeri, Romis Ribeiro de Faissol Attux, Francisco Haiter Neto
No abstract text is available yet for this article.
June 7, 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29886112/postoperative-pain-and-opioid-analgesic-requirements-after-orthognathic-surgery
#11
Ashkan Mobini, Pushkar Mehra, Radhika Chigurupati
PURPOSE: The purpose of this study was to determine the effect of individual characteristics, such as age, gender, and type of surgery, on postoperative pain intensity and opioid analgesic consumption after orthognathic surgery. PATIENTS AND METHODS: This prospective observational study was conducted at a single academic medical center during a 12-month period from 2015 to 2016. Thirty of 125 patients 18 to 65 years of age who had American Society of Anesthesiologists status I and II and were admitted to the hospital after orthognathic surgery were recruited...
May 19, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29880431/using-three-dimensional-average-facial-meshes-to-determine-nasolabial-soft-tissue-deformity-in-adult-uclp-patients
#12
Ka Wai Frank Wong, Andrew Keeling, Kulraj Achal, Balvinder Khambay
BACKGROUND AND PURPOSE: There is limited literature discussing the residual nasolabial deformity of adult patients prior to undergoing orthognathic surgery. The purpose of this study is to determine the site and severity of the residual nasolabial soft tissue deformity between adult unilateral cleft lip and palate (UCLP) patients and a non-cleft reference group, prior to orthognathic surgery. MATERIAL AND METHODS: Sixteen adult male UCLP patients, who all received primary lip and palate surgery according to a standardised Hong Kong protocol were recruited for this study...
June 4, 2018: Surgeon: Journal of the Royal Colleges of Surgeons of Edinburgh and Ireland
https://www.readbyqxmd.com/read/29877984/therapeutic-protocol-for-orthosurgical-management-of-class-iii-malocclusion-in-patients-with-cleidocranial-dysostosis
#13
Fernando André Barth, Angelo Menuci Melo, Renata Rodrigues Almeida-Pedrin, Victor de Miranda Ladewig, Ana Cláudia de Castro Ferreira Conti
Cleidocranial dysostosis (CCD) is a congenital skeletal disorder with significant manifestations in facial and dental development. Patients are affected with CCD present maxillary deficiency, late dental eruption, and supernumerary teeth. Early and multidisciplinary approach is necessary to treat CCD patients, especially to manage dental eruption and Class III malocclusion with maxillary deficiency. Several orthodontic and surgical interventions are performed to enable traction and extraction of teeth. Yet the maxillary deficiency may be protracted followed by orthodontic dental compensation...
June 5, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29877980/changes-in-cervical-lordosis-after-orthognathic-surgery-in-skeletal-class-iii-patients
#14
Fernando de Oliveira Andriola, Fernando Zugno Kulczynski, Pedro Henrique Deon, Denizar Alberto da Silva Melo, Leonardo Matos Santolim Zanettini, Rogério Miranda Pagnoncelli
The purpose of this study was to evaluate cervical lordosis and head posture changes using lateral cephalographs after bimaxillary orthognathic surgery for mandibular prognatism by null hypothesis. Twenty-five patients with skeletal class III dentofacial deformities (10 men, 15 women; mean age, 29.28 ± 8.23 years; range 18-48 years) were included in this prospective clinical study. Lateral cephalographs were taken in natural head position (NHP) 2 weeks before and 6 months after orthognathic surgery. The reproducibility of the radiographer's technique of taking radiographs in NHP was investigated using a photographic method and found to be acceptable...
June 5, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29875889/a-perioral-soft-tissue-evaluation-after-orthognathic-surgery-using-three-dimensional-computed-tomography-scan
#15
Rahul Tiwari, P Srinivas Chakravarthi, Vivekanand S Kattimani, Krishna Prasad Lingamaneni
Background: Facial appearance is an important factor, affects social and psychological well-being. The ideal positioning of jaws and soft tissues is crucial during orthognathic surgery for a better outcome, but the response of facial soft tissues does not always reflect the exact movements of the underlying jaws in 1:1 ratio. So, soft tissue changes following orthognathic surgery require utmost attention during surgical correction to make successful treatment. Aims and Objectives: Evaluation of perioral soft tissue changes after orthognathic surgical procedures...
2018: Open Dentistry Journal
https://www.readbyqxmd.com/read/29870506/-counterclockwise-craniofacial-distraction-osteogenesis-c3do-for-tracheostomy-dependent-children-with-treacher-collins-syndrome
#16
Richard A Hopper, Hitesh Kapadia, Srinivas Susarla, Randall Bly, Kaalan Johnson
BACKGROUND: The craniofacial rotation deformity in Treacher Collins syndrome (TCS) results in airway compression that is not adequately addressed by isolated mandibular distraction osteogenesis (MDO). The purpose of this work is to present a novel surgical technique, counterclockwise craniofacial distraction osteogenesis (C3DO), to improve the airway morphology and occlusion in tracheostomy-dependent patients with TCS. METHODS: This is a prospective study of tracheostomy-dependent children with TCS who underwent C3DO...
May 19, 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29866455/combined-or-staged-temporomandibular-joint-and-orthognathic-surgery-for-patients-with-internal-derangement-and-dentofacial-deformities
#17
REVIEW
Somi Kim, David A Keith
Patients with internal derangement of the temporomandibular joint and dentofacial deformities need appropriate evaluation for both conditions. Correct diagnosis of internal derangement is vital in determining the correct orthognathic surgery plan, and it is particularly important to differentiate between myofascial dysfunction and intra-articular joint problems. Depending on the stage of internal derangement, patients may need treatment for temporomandibular dysfunction symptomatically, staged, or concurrently with orthognathic surgery...
June 1, 2018: Oral and Maxillofacial Surgery Clinics of North America
https://www.readbyqxmd.com/read/29866451/orthognathic-surgery-as-a-treatment-for-temporomandibular-disorders
#18
REVIEW
M Franklin Dolwick, Charles G Widmer
Well-controlled clinical trials supporting orthognathic surgery as the primary management for temporomandibular disorders (TMDs) are lacking. Most published studies lack an adequate experimental design to minimize biases. Studies that did minimize some biases do support an overall reduction in the frequency of TMD signs and symptoms in some Class III and Class II patients who had orthognathic surgery. However, Class II correction with counter-clockwise rotation of the mandible increased TMD. Individual variability precludes the ability to predict TMD outcome after surgery...
June 1, 2018: Oral and Maxillofacial Surgery Clinics of North America
https://www.readbyqxmd.com/read/29863564/virtual-surgical-planning-assisted-management-for-three-dimensional-dentomaxillofacial-deformities
#19
Hussein Helal, Yu Wang, Zhifan Qin, Peng Wang, Zichao Xiang, Jihua Li
OBJECTIVE: Treatment of 3-dimensional dentomaxillofacial deformities remains a significant clinical challenge. This retrospective study aims to present the modalities of management for complex 3-dimensional dentomaxillofacial deformities with the assistance of virtual surgical planning (VSP) and 3-dimensional printed navigation templates. STUDY DESIGN: Ten patients diagnosed with complex 3-dimensional dentomaxillofacial deformities received treatment of combined orthodontics and orthognathic surgery...
May 31, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29863560/effects-of-craniofacial-morphology-on-nasal-respiratory-function-and-upper-airway-morphology
#20
Xu Gong, Weiran Li, Xuemei Gao
BACKGROUND: Craniofacial skeletal patterns change after orthognathic surgery. The present study aimed to investigate the effects of different craniofacial patterns on nasal respiratory function and the upper airway. METHODS: Forty-seven healthy subjects were selected and divided into 3 groups according to their mandibular position. Sixteen were in the skeletal Class I group, 15 were in the skeletal Class II group, and 16 were in the skeletal Class III group. Cone beam computed tomography was performed, and nasal airflow and nasal resistance were measured...
May 31, 2018: Journal of Craniofacial Surgery
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