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Orthognathic surgery

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https://www.readbyqxmd.com/read/29784599/unilateral-hemimandibular-hyperactivity-clinical-features-of-a-population-of-128-patients
#1
Roberto Antonio Vernucci, Valentina Mazzoli, Gabriella Galluccio, Alessandro Silvestri, Ersilia Barbato
PURPOSE: Facial asymmetries due to unilateral condylar hyperactivity are often a challenge both for maxillo-facial surgeons and for orthodontists; the current literature shows different opinions about aetiology, classification, treatment approach and timing. We made a retrospective study on patients suffering from unilateral condylar hyperactivity between 1997 and 2015 in our Department; clinical features and treatment options were grouped and compared with literature. METHODS: The descriptive analysis investigated variables like sex, age, side and direction of the asymmetry, condylar activity and type of intervention...
May 7, 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29778439/does-orthognathic-surgery-improve-myofacial-pain-in-individuals-with-skeletal-class-iii-one-year-follow-up
#2
Aline Monise Sebastiani, Paola Fernanda Cotait de Lucas Corso, Daniel Bonotto, Juliana Feltrin de Souza, Delson João da Costa, Rafaela Scariot, Nelson Luis Barbosa Rebellato
OBJECTIVE: The objective of the study was to evaluate the effect of orthognathic surgery on temporomandibular disorder (TMD) in patients with skeletal class III malocclusion. STUDY DESIGN: Forty-seven patients undergoing surgery were evaluated by a trained examiner using Axis I of the Research Diagnostic Criteria/TMD index, consecutively, at 3 different periods: 1 week before operation (T0), 6 months after operation (T1), and 1 year after operation (T2). Bivariate analyses were performed to compare the evaluation periods (P < ...
April 16, 2018: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29776719/three-dimensional-changes-of-proximal-segments-in-facial-asymmetry-patients-after-bilateral-vertical-ramus-osteotomy
#3
J W Huh, S Y Kim, Y-B Lee, J H Park, H-D Jung, Y-S Jung
The intraoral vertical ramus osteotomy (IVRO) is a useful technique for mandibular setback surgery. However, there is a tendency for lateral flaring of the proximal segments on the non-deviation side after the correction of mandibular asymmetry with this technique. The purpose of this retrospective study was to evaluate the positional changes of the proximal segments after IVRO setback in skeletal class III patients with asymmetry, using preoperative and postoperative computed tomography scan data, and to apply the results in clinical practice...
May 15, 2018: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29775466/perception-of-aesthetics-and-personality-traits-in-orthognathic-surgery-patients-a-comparison-of-still-and-moving-images
#4
Klaus Sinko, Ulrich S Tran, Arno Wutzl, Rudolf Seemann, Gabriele Millesi, Reinhold Jagsch
It is common in practicing orthognathic surgery to evaluate faces with retruded or protruded chins (dysgnathic faces) using photographs. Because motion may alter how the face is perceived, we investigated the perception of faces presented via photographs and videos. Two hundred naïve raters (lay persons, without maxillo facial surgery background) evaluated 12 subjects with varying chin anatomy [so-called skeletal Class I (normal chin), Class II (retruded chin), and Class III (protruded chin)]. Starting from eight traits, with Factor analysis we found a two-Factor solution, i...
2018: PloS One
https://www.readbyqxmd.com/read/29773499/study-of-condylar-positional-changes-after-sagittal-split-osteotomy-for-mandibular-advancement-a-prospective-cohort-study
#5
Alberto Costas, Jacinto F Sanromán, Pilar Castro, Martín F Ferro, Annahys Lopez, Bogdan Stavaru
PURPOSE: To analyse the possible morphologic and positional changes of the mandibular condyles after orthognathic surgery. MATERIAL AND METHODS: A prospective cohort study was performed. Patients with mandibular retrognathism were surgically treated to advance the mandible. The study group included seventeen patients (34 condyles) treated with sagittal split osteotomies alone (4 patients) or in combination with maxillary osteotomies (13 patients). Only condyles located on the mandibular side that advance during surgery were studied, therefore only 25 condyles entered this prospective study...
April 22, 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29772190/serum-metal-levels-in-maxillofacial-reconstructive-surgery-patients-a-pilot-study
#6
Louis G Mercuri, Michael Miloro, Anastasia K Skipor, Divya Bijukumar, Cortino Sukotjo, Mathew T Mathew
PURPOSE: The aim of this pilot study was to assay metal concentrations in the serum of patients who had undergone dental implant placement, orthognathic surgery using rigid metal fixation plates and screws, and total temporomandibular joint replacement (TMJ TJR). MATERIALS AND METHODS: Thirty patients were identified and included in this pilot study. Sixteen patients (9 men and 8 women), with an average age of 44 years (range, 19 to 79 yr), provided informed consent to participate and were divided into 3 study groups with 4 patients in each (group 1, orthognathic surgery; group 2, TMJ TJR; and group 3, dental implant placement)...
April 21, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29765914/nonsurgical-treatment-and-stability-of-an-adult-with-a-severe-anterior-open-bite-malocclusion
#7
Aldo Otazú Cambiano, Guilherme Janson, Diego Coelho Lorenzoni, Daniela Gamba Garib, Dino Torres Dávalos
OBJECTIVES: A skeletal anterior open-bite is a challenging malocclusion for the orthodontist due to the difficulty and instability of correction. Treatment options for the adult patient include extractions, anterior extrusion with intermaxillary elastics, posterior intrusion using skeletal anchorage, occlusal adjustment, and orthognathic surgery. Patient compliance plays a key role in posttreatment stability. The present case report demonstrates the orthodontic treatment of an adult patient who presented with a complex open-bite malocclusion...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29750668/management-of-obstructive-sleep-apnoea-an-update-on-the-role-of-distraction-osteogenesis
#8
Yiu Yan Leung, Karen Kar Yan Lai
PURPOSE OF REVIEW: This article reviews the current literature on the use of distraction osteogenesis as a treatment for patients with obstructive sleep apnoea (OSA). We reviewed the indications, surgical protocols and outcomes for distraction osteogenesis in paediatric and adult OSA cases described in the literature. RECENT FINDINGS: There is evidence that distraction osteogenesis is effective in treating children with OSA as a result of underdevelopment of jaws such as those with craniofacial syndromes...
May 9, 2018: Current Opinion in Otolaryngology & Head and Neck Surgery
https://www.readbyqxmd.com/read/29750105/lip-repositioning-technique-a-simple-surgical-procedure-to-improve-the-smile-harmony
#9
Vicente Faus-Matoses, Ignacio Faus-Matoses, Ana Jorques-Zafrilla, Vicente J Faus-Llácer
Excessive gingival display is an esthetic concern for patients. It is a condition in which an overexposure of the maxillary gingiva (>3mm) is present during smiling. There are different etiologies of a gummy smile, such as vertical maxillary excess, short and hyperactive upper lip, altered passive eruption, anterior dentoalveolar extrusion, or a combination of these causes. The correct diagnosis of all etiologic factors is imperative for its appropriate management. Many techniques have been used to restore the dentogingival relation for the management of gummy smile...
April 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29746304/update-on-complications-in-cleft-orthognathic-surgery
#10
Dörte Ohrmann, Paa Ekow Hoyte-Williams, Philip Kuo-Ting Chen
PURPOSE OF REVIEW: To give an update on recent publications and tendencies concerning complications in cleft orthognathic surgery. RECENT FINDINGS: Cleft-specific changes after orthognathic surgery and their impact on surgical outcomes are discussed. Focus lays on the causes and mechanisms of cleft-related surgical complications and strategies to prevent or minimize these complications. Bimaxillary surgery is seen as a safe procedure for cleft patients. Maxillary distraction, total or segmental, is pointed out as an alternative method to improve outcomes...
May 8, 2018: Current Opinion in Otolaryngology & Head and Neck Surgery
https://www.readbyqxmd.com/read/29742139/a-novel-soft-tissue-prediction-methodology-for-orthognathic-surgery-based-on-probabilistic-finite-element-modelling
#11
Paul G M Knoops, Alessandro Borghi, Federica Ruggiero, Giovanni Badiali, Alberto Bianchi, Claudio Marchetti, Naiara Rodriguez-Florez, Richard W F Breakey, Owase Jeelani, David J Dunaway, Silvia Schievano
Repositioning of the maxilla in orthognathic surgery is carried out for functional and aesthetic purposes. Pre-surgical planning tools can predict 3D facial appearance by computing the response of the soft tissue to the changes to the underlying skeleton. The clinical use of commercial prediction software remains controversial, likely due to the deterministic nature of these computational predictions. A novel probabilistic finite element model (FEM) for the prediction of postoperative facial soft tissues is proposed in this paper...
2018: PloS One
https://www.readbyqxmd.com/read/29738290/mean-goslon-yardstick-scores-after-3-different-treatment-protocols-a-long-term-study-of-patients-with-unilateral-cleft-lip-and-palate
#12
Petra Peterson, Michael Mars, Alan Gowans, Ola Larson, Erik Neovius, Gunilla Henningsson, Anna Andlin-Sobocki, Marie Pegelow, Mathias Lemberger, Liisi M Raud-Westberg, Agneta L-A Karsten
OBJECTIVES: (1) To evaluate dental arch relationships, with the Great Ormond Street, London and Oslo (GOSLON) Yardstick, of participants with Unilateral cleft lip and palate (UCLP) and treated with 1-stage palatal closure with 3 different surgical protocols (2) to compare the mean GOSLON ratings with other CLP centers. DESIGN: Retrospective study of medical charts and dental models. SETTING: Karolinska University Hospital, Stockholm, Sweden...
January 1, 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29736288/reconstruction-of-the-adult-hemifacial-microsomia-patient-with-temporomandibular-joint-total-joint-prosthesis-and-orthognathic-surgery
#13
Piero Cascone, Valentino Vellone, Valerio Ramieri, Emanuela Basile, Achille Tarsitano, Claudio Marchetti
Background: HFM patients' reconstruction has always been a challenge for maxillofacial surgeons, and numerous reconstructive techniques have been described. Surgical treatment depends on the patient's age and contemplates Temporomandibular Joint (TMJ) reconstruction in conjunction with orthognathic surgery, usually necessary following completion of growth to maximize the functional and esthetic results. Distraction osteogenesis had gained popularity as valid alternative in growing patients, but the two primary methods to reconstruct the TMJs involve the use of autogenous, using free or microvascular bone grafts, or alloplastic graft, but there is no widely accepted method...
2018: Case Reports in Surgery
https://www.readbyqxmd.com/read/29732300/hard-and-soft-tissue-profiles-of-the-midface-region-in-patients-with-skeletal-class-iii-malocclusion-using-cone-beam-computed-tomography-multiplanar-reconstructed-image-analysis
#14
Bomi Kim, Hyung-Chul Lee, Seong-Hun Kim, Yongil Kim, Woosung Son, Seong Sik Kim
Objective: This study examined cone-beam computed tomography (CBCT)-derived multiplanar-reconstructed (MPR) cross-sections to clarify the salient characteristics of patients with skeletal class III malocclusion with midface deficiency (MD). Methods: The horizontal and sagittal plane intersection points were identified for middle-third facial analysis in 40 patients in the MD or normal (N) groups. MPR images acquired parallel to each horizontal plane were used for length and angular measurements...
May 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/29731193/thirty-years-of-submental-intubation-a-review
#15
REVIEW
D Lim, B C Ma, R Parumo, P Shanmuhasuntharam
Submental intubation has been used as an alternative to conventional intubation in the field of oral and maxillofacial surgery since its introduction by Francisco Hernández Altemir in 1986. A review of submental intubation was performed using data from all case reports, case-series, and prospective and retrospective studies published between 1986 and 2016. The indications, variations in incision length, incision sites, types of endotracheal tube used, methods of exteriorization, and complications were recorded and analyzed...
May 3, 2018: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29730061/computed-tomographic-angiographic-perforator-localization-for-virtual-surgical-planning-of-osteocutaneous-fibular-free-flaps-in-head-and-neck-reconstruction
#16
Kyle S Ettinger, Amy E Alexander, Kevin Arce
Virtual surgical planning (VSP), computer-aided design and computer-aided modeling, and 3-dimensional printing are 3 distinct technologies that have become increasingly used in head and neck oncology and microvascular reconstruction. Although each of these technologies has long been used for treatment planning in other surgical disciplines, such as craniofacial surgery, trauma surgery, temporomandibular joint surgery, and orthognathic surgery, its widespread use in head and neck reconstructive surgery remains a much more recent event...
April 10, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29728860/treatment-outcome-of-bimaxillary-surgery-for-asymmetric-skeletal-class-ii-deformity
#17
Yun-Fang Chen, Yu-Fang Liao, Yin-An Chen, Yu-Ray Chen
OBJECTIVES: Facial asymmetry is one of the main concerns in patients with a dentofacial deformity. The aims of the study were to (1) evaluate the changes in facial asymmetry after bimaxillary surgery for asymmetric skeletal class II deformity and (2) compare preoperative and postoperative facial asymmetry of class II patients with normal controls. MATERIALS AND METHODS: The facial asymmetry was assessed for 30 adults (21 women and 9 men, mean age: 29.3 years) who consecutively underwent bimaxillary surgery for asymmetric skeletal class II deformity using cone-beam computed tomography before and at least 6 months after surgery...
May 4, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29720332/standard-and-low-dose-cone-beam-computer-tomography-protocol-for-orthognatodontic-diagnosis-a-comparative-evaluation
#18
M Portelli, A Militi, A Lo Giudice, R Lo Giudice, R Fastuca, I Ielo, V Mongelli, G Lo Giudice, A Martintoni, M Manuelli, A Lucchese, R Nucera
Considering the diagnostic capability offered by cone-beam computed tomography (CBCT), nowadays orthodontists often use this exam for treatment planning, especially in cases of impacted teeth, maxillary ipoplasia, orthognathic surgery etc. The aim of this study was to compare the radiation doses related to a conventional CBCT setting and that of a low dose protocol, usable in orthodontic practice. The absorbed organ doses were measured using an anthropomorphic phantom loaded with thermo-luminescent dosimeters related to sensitive organs (brain, bone marrow, salivary glands, thyroid, esophagus, oral mucosa, extrathoracic airways, lymph nodes)...
March 2018: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/29720326/piezoelectric-surgery-inserts-vs-conventional-burst-a-clinical-investigation
#19
D Bertossi, R Nocini, U Luciano, P Galzignato, G Ricciardi, A Lucchese, U Tacchino, D Donadello, L Lanaro, A Gualdi, D De Santis, G Giampaoli, P F Nocini
Piezosurgery is a new technique that can be used to cut mineralized structures without damaging adjacent soft tissues. This device has a lot of advantages: reduced surgical time, blood loss, and inferior alveolar nerve injury in bimaxillary osteotomy. Fifty patients underwent different surgical operations (orthognathic surgery, traumatic surgery, reconstructive surgery, aesthetic procedures) with 7 different kind of piezosurgery inserts in a period of 8 months. The same two surgeons performed all the procedures...
March 2018: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/29709382/numbness-of-the-lower-lip-does-not-adversely-affect-quality-of-life-or-patients-satisfaction-after-mandibular-orthognathic-surgery
#20
Z Ahmad, J Breeze, R Williams
Measures of patient-reported quality of life (QoL) are increasingly being used to tailor services that are funded by Clinical Commissioning Groups (CCG) in England. Mandibular osteotomies may result in altered sensation of the lower lip, but we know of limited evidence about the resulting effect on QoL. The modified Bristol orthognathic patient outcomes questionnaire was given to patients who had mandibular osteotomies at the Queen Elizabeth Hospital, Birmingham, between March 2006 and April 2016. Questionnaires were collected at the final orthognathic postoperative appointment...
April 27, 2018: British Journal of Oral & Maxillofacial Surgery
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