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https://www.readbyqxmd.com/read/29771833/proptosis-correction-in-pre-adolescent-patients-with-syndromic-craniosynostosis-by-le-fort-iii-distraction-osteogenesis
#1
Travis L Gibson, Barry H Grayson, Joseph G McCarthy, Pradip R Shetye
Le Fort III distraction osteogenesis may be indicated in the treatment of syndromic craniosynostosis with severe midface retrusion and proptosis. This study assesses the stability of proptosis correction over 10-years.A retrospective review identified 15 patients with syndromic craniosynostosis treated by Le Fort III distraction prior to age 10 (9 males, 6 females; age 4.9 ± 1.5 years). Untreated, non-craniosynostotic age- and gender-matched controls were obtained from historical growth records. Lateral cephalometric tracings at pre-surgery (T1), immediate (T2), 1 year (T3), 5 years (T4), and 10 years (T5) (n = 11) post-distraction were superimposed using the best-fit of cranial base...
May 15, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29753777/surgically-assisted-rapid-palatal-expansion-in-class-iii-malocclusion-our-experience
#2
A Barrabé, C Meyer, H Bonomi, Weber Elise, N Sigaux, A Louvrier
INTRODUCTION: Maxillary transverse deficiency (MTD) is a common facial disharmony that may need surgical assisted rapid palatal expansion (SARPE). The aim of this study was to present our SARPE technique and to report about our experience. MATERIEL AND METHOD: Medical records of all class III patients who underwent SARPE in our department from 2010 to 2015 and for whom a follow-up of at least 1 year was available, were included in a retrospective study. The technic consisted, after short orthodontic preparation allowing for divergence of the upper central incisors, in a complete Le Fort I osteotomy without down fracture, and medial sagittal submucosal separation of the hard palate under general anesthesia in an inpatient procedure...
May 10, 2018: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29750570/orthognathic-correction-in-prader-willi-syndrome-occlusion-and-sleep-restored
#3
Keliang Kevin Xiao, Shikhar Tomur, Robert Beckerman, Kevin Cassidy, Michael Lypka
Children with Prader-Willi Syndrome (PWS) may present with a malocclusion and have a high propensity of developing obstructive sleep apnea (OSA). Obstructive sleep apnea is associated with short- and long-term adverse effects that negatively impact children with PWS. A case of a 15-year-old male with PWS, OSA, and a debilitating malocclusion is presented who underwent a combination of Le Fort 1 osteotomy, genioplasty, and tongue reduction to successfully treat his OSA and malocclusion. In select cases, orthognathic correction and other surgical therapies should be considered in patients with PWS...
January 1, 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29676256/-the-smile-a-challenge-in-the-treatment-of-class-iii
#4
Laure De Launay, Sarah Gebeile-Chauty
INTRODUCTION: The smile poses a challenge in the treatment of class III. Untreated, the class III patient presents excessive maxillary torque and a predominant display of the mandibular incisors, a sign that becomes more visible with age. Functional orthopedics restores the aesthetic appearance of the smile by maxillary protraction (sometimes temporarily because 20% of cases will still need surgery). Depending on the initial severity of the case (-4.5 mm AoBo would be the threshold value), the options are compensation or surgical correction...
March 2018: L' Orthodontie Française
https://www.readbyqxmd.com/read/29661509/distraction-osteogenesis-in-the-surgical-management-of-syndromic-craniosynostosis-a-comprehensive-review-of-published-papers
#5
REVIEW
N M N Al-Namnam, F Hariri, Z A A Rahman
Our aim was to summarise current published evidence about the prognosis of various techniques of craniofacial distraction osteogenesis, particularly its indications, protocols, and complications. Published papers were acquired from online sources using the keywords "distraction osteogenesis", "Le Fort III", "monobloc", and "syndromic craniosynostosis" in combination with other keywords, such as "craniofacial deformity" and "midface". The search was confined to publications in English, and we followed the guidelines of the PRISMA statement...
April 13, 2018: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29628302/separation-patterns-of-orbital-wall-and-risk-of-optic-canal-injury-in-le-fort-3-osteotomy
#6
Niyazi Aizezi, Tomohisa Nagasao, Tadaaki Morotomi, Motoki Tamai, Koji Imajo
PURPOSE: The authors hypothesized that the risks of optic canal injury in down-fracturing after Le Fort 3 osteotomy vary depending on the separation patterns of the orbital walls. This study verifies this hypothesis using biomechanical simulation. METHODS: Ten finite-element skull models were produced using computer tomography data from ten persons. These models were modified to simulate Le Fort 3 osteotomy models by removing junctions between the neurocranium and facial cranium...
May 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29618890/modified-le-fort-iii-osteotomy-different-applications
#7
J M García Y Sánchez, C L Gómez Rodríguez, G Pacheco Rubio
Summary: Based on the new concepts of the modified Le Fort III osteotomy (MLFIIIO), Three variations of this technique are implemented: (A) the modified osteotomy Le Fort III Champy (1980) technique to be described with the use of surgical guides, and subciliary approach or an transconjunctival approach. Excellent technique for horizontal advancement no further to 6 mm, without requiring any type of graft.. (B) The modified Le Fort III osteotomy in "Z": to solve horizontal (posterior anterior) problems of more than 6 mm without bone grafting...
June 2018: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/29618888/strain-distribution-and-amount-of-force-required-during-pterygomaxillary-dysjunction-a-comparison-of-pterygoid-versus-shark-fin-osteotome
#8
Shoaib Parkar, Mueedul Islam, Ramakrishna Tangaturi, Hari Keerthy Panthala, Azhar Khan, Mohammed Imran, Jayesh Anand
Objective: This study was conducted to compare the efficacy of Obwegeser's pterygoid osteotome and Laster shark-fin osteotome by measurement of strain adjacent to the pterygomaxillary suture and the amount of force required for dysjunction. Materials and Methods: Two popular instruments Obwegesser's pterygoid and shark-fin osteotome were tested on dry human skulls. The external force required for separation of the pterygomaxillary suture with these osteotomes was generated by an electronically controlled 'Instron' tester Bi-06-108...
June 2018: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/29589980/le-fort-iii-distraction-with-internal-vs-external-distractors-a-cephalometric-analysis
#9
Kevin J Robertson, Bernardino M Mendez, William J Bruce, Brendan D McDonnell, Michael V Chiodo, Parit A Patel
OBJECTIVE: This study compares the change in midface position following Le Fort III advancement using either rigid external distraction (group 1) or internal distraction (group 2). We hypothesized that, with reference to right-facing cephalometry, internal distraction would result in increased clockwise rotation and inferior displacement of the midface. DESIGN: Le Fort III osteotomies and standardized distraction protocols were performed on 10 cadaveric specimens per group...
January 1, 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29580844/primary-maxillary-deficiency-dentofacial-deformities-occlusion-and-facial-esthetic-surgical-outcomes
#10
Jeffrey C Posnick, Sirish Makan, Daniel Bostock, Timothy J Tremont
PURPOSE: The purpose of this study was to document the malocclusion and facial dysmorphology in patients with primary maxillary deficiency (PMD) and chronic obstructive nasal breathing before treatment and the outcomes after bimaxillary orthognathic, genioplasty, and intranasal surgery. MATERIALS AND METHODS: A retrospective cohort study of patients with PMD undergoing bimaxillary orthognathic, chin, and intranasal surgery was implemented. The predictor variables were grouped into demographic, anatomic, operative, and longitudinal follow-up categories...
March 1, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29561482/improving-postoperative-nasal-airway-patency-in-le-fort-based-maxillofacial-trauma-patients-via-a-modified-nasal-packing-technique
#11
Amir Wolff, Gabriel F Santiago, Micah Belzberg, Omri Emodi, Chad R Gordon
INTRODUCTION: Combined mid-face and nasal apparatus trauma injuries pose a significant challenge to airway patency (AW), in the immediate postoperative setting following fracture reduction. As such, the authors describe a modified technique with the goal of maintaining a patent nasal AW, while at the same time, minimizing nasopharyngeal bleeding and nasal AW edema-which can complicate patients requiring intermaxillary fixation (IMF) in the setting of pan-facial trauma. METHODS: A modified technique was devised to assist the reconstruction surgeon in avoiding the risks associated with tracheostomy placement...
March 20, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29560545/simultaneous-rhinoseptoplasty-and-orthognathic-surgery-outcome-analysis-of-250-consecutive-patients-using-a-modified-le-fort-i-osteotomy
#12
M Raffaini, R Cocconi, G Spinelli, T Agostini
BACKGROUND: The purpose of the present study was to assess the safety and efficacy of both functional intranasal procedures and cosmetic rhinoplasty combined with bimaxillary surgery. METHODS: The author executed a retrospective cohort study derived from patients who underwent combined rhinoseptoplasty and bimaxillary surgery at a private practice setting (Face Surgery Center, Parma, Italy) between April 2006 and 2015 by a single surgeon. The minimum follow-up was 12 months...
March 20, 2018: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/29554455/impact-of-the-distance-of-maxillary-advancement-on-horizontal-relapse-after-orthognathic-surgery
#13
Artur Fahradyan, Erik M Wolfswinkel, Noreen Clarke, Stephen Park, Michaela Tsuha, Mark M Urata, Jeffrey A Hammoudeh, Dennis-Duke R Yamashita
BACKGROUND: The maxillary horizontal relapse following Le Fort I advancement has been estimated to be 10% to 50%. This retrospective review examines the direct association between the amounts of maxillary advancement and relapse. We hypothesize that the greater the advancement, the greater the relapse amount. METHOD: Patients with class III skeletal malocclusion underwent maxillary advancement with either a Le Fort I or a Le Fort I with simultaneous mandibular setback (bimaxillary surgery) from 2008 to 2015...
April 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29549017/long-term-stability-of-pre-orthodontic-orthognathic-bimaxillary-surgery-using-intraoral-vertical-ramus-osteotomy-versus-conventional-surgery
#14
Jeong-Hwa Jeong, Sung-Hwan Choi, Kee-Deog Kim, Chung-Ju Hwang, Sang-Hwy Lee, Hyung-Seog Yu
PURPOSE: The aim of the present study was to compare the long-term stability of bimaxillary surgery using an intraoral vertical ramus osteotomy (IVRO) with and without presurgical orthodontic treatment. MATERIALS AND METHODS: The present retrospective study included 31 consecutive patients with skeletal Class III malocclusions who had undergone bimaxillary surgery (Le Fort I osteotomy and bilateral IVRO). Patients were divided into 2 groups based on treatment type: pre-orthodontic orthognathic surgery (POGS; n = 17) and conventional surgery with presurgical orthodontic treatment (CS; n = 14)...
February 20, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29545032/time-course-change-in-temporomandibular-joint-space-after-advancement-and-setback-mandibular-osteotomy-with-le-fort-i-osteotomy
#15
Koichiro Ueki, Akinori Moroi, Takamitsu Tsutsui, Ryota Hiraide, Akihiro Takayama, Yuki Saito, Momoko Sato, Nana Baba, Tatsuya Tsunoda, Asami Hotta, Kunio Yoshizawa
PURPOSE: The purpose of this study was to compare time-course changes in temporomandibular joint (TMJ) space between mandibular advancement surgery and setback surgery after sagittal split ramus osteotomy (SSRO) and Le Fort I osteotomy. SUBJECTS AND METHODS: The subjects were 46 patients (92 joints) who underwent bi-maxillary surgery. The TMJ disc position was assessed by magnetic resonance imaging (MRI) and the anterior, superior, posterior, medial and lateral joint spaces were assessed by computed tomography (CT), preoperatively and at 1 week and 1 year postoperative...
April 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29544755/maxillary-interdental-osteotomies-have-low-morbidity-for-alveolar-crestal-bone-and-adjacent-teeth-a-cone-beam-computed-tomography-based-study
#16
Daniel B Rodrigues, Paulo S F Campos, Larry M Wolford, Jaqueline Ignácio, João R Gonçalves
PURPOSE: Maxillary segmentation involving interdental osteotomies can have an adverse effect on the interdental crestal bone and adjacent teeth. The purpose of the present study was to evaluate the effect of interdental osteotomies on surrounding osseous and dental structures, including adjacent teeth, using cone beam computed tomography (CBCT), in patients who underwent segmental maxillary osteotomies. PATIENTS AND METHODS: The present retrospective cohort study evaluated interdental osteotomy (IDO) sites between the lateral incisors and canines in patients treated with 3-piece Le Fort I osteotomies...
February 19, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29534912/evaluation-of-condylar-resorption-rates-after-orthognathic-surgery-in-class-ii-and-iii-dentofacial-deformities-a-systematic-review
#17
REVIEW
Valthierre Nunes de Lima, Leonardo Perez Faverani, Joel Ferreira Santiago, Celso Palmieri, Osvaldo Magro Filho, Eduardo Piza Pellizzer
The purpose of this study was to perform a systematic review of morphological alterations in the condyles after orthographic surgery involving a sagittal split ramus osteotomy (SSRO), with or without surgery on the maxilla. Searches were performed on three databases and registered in the PROSPERO. The selected studies fulfilled the criteria established by the following PICO model: (1) population: individuals with skeletal dentofacial deformities (class II or III facial patterns), without asymmetry; (2) intervention: orthognathic surgery for mandibular setback using an SSRO, with or without a Le Fort I osteotomy, and fixed with bicortical screws or plates and screws; (3) comparison: orthognathic surgery for mandibular advancement using an SSRO, with or without a Le Fort I osteotomy, and fixed with plates and screws or bicortical screws; and (4) outcome: condylar resorption rate and relapse...
February 21, 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29498976/ruptured-pseudoaneurysm-of-the-maxillary-artery-and-its-branches-following-le-fort-i-osteotomy-evidence-based-guidelines
#18
Michael R Bykowski, Amber Hill, Catherine Garland, William Tobler, Joseph E Losee, Jesse A Goldstein
BACKGROUND: Although rare, pseudoaneurysms (PA) can develop following Le Fort I osteotomy and lead to life-threatening hemorrhage. However, the typical presentation of a PA following a Le Fort I osteotomy is not well characterized. Evidence-based guidelines are not currently available for evaluation of PA following Le Fort I osteotomy. METHODS: A case report is presented of a 27-year-old man who underwent Le Fort I advancement and subsequently developed a bleeding PA...
March 1, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29497867/relapse-after-le-fort-i-surgery-in-oral-cleft-patients-a-2-year-follow-up-using-digitized-and-3d-models
#19
Willian Saranholi da Silva, Ana Lúcia Pompéia Fraga de Almeida, Maria Giulia Rezende Pucciarelli, Karin Hermana Neppelenbroek, Juliana Dreyer da Silva de Menezes, Renato Yassutaka Faria Yaedú, Thais Marchini Oliveira, Flavia M R N Cintra, Simone Soares
This retrospective observational study aimed to evaluate and identify the relapse rate after orthognathic surgery for maxillary advancement (Le Fort I maxillary osteotomy) in oral cleft patients through digitized cephalograms and 3D dental models, following 2 years. Lateral cephalograms and dental casts of 17 individuals, enrolled in Orthodontics Department in Hospital of Rehabilitation of Craniofacial Anomalies, were carried out. The digital cephalometric tracings were evaluated in: T1-before surgery, T2-immediate after surgery, T3-6-month to 1-year after surgery...
March 1, 2018: Odontology
https://www.readbyqxmd.com/read/29496371/effects-of-bimaxillary-orthognathic-surgery-on-pharyngeal-airway-and-respiratory-function-at-sleep-in-patients-with-class-iii-skeletal-relationship
#20
Tahsin Tepecik, Ümit Ertaş, Metin Akgün
PURPOSE: The aim of this study was to examine the effects of bimaxillary orthognathic surgery on pharyngeal airway space (PAS) and respiratory function during sleep. MATERIALS AND METHODS: The subjects were 21 patients with class III skeletal relationship, and all of the patients underwent bimaxillary surgery (Le Fort I advancement and bilateral sagittal split ramus setback osteotomies simultaneously). Pharyngeal volumes of nasopharyngeal (V-NPA), retropalatal (V-RPA), retrolingual (V-RLA), oropharyngeal (V-ORO) and total pharyngeal airways (V-TOT); minimum axial areas of retropalatal (MA-RPA), retrolingual (MA-RLA) and oropharyngeal airways (MA-ORO); and position of the hyoid were studied in order to detect dimensional PAS changes using cone-beam computed tomography (CBCT) with Dolphin 11...
April 2018: Journal of Cranio-maxillo-facial Surgery
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