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Le fort 1 Osteotomy

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https://www.readbyqxmd.com/read/28570459/alar-pinning-in-rigid-external-distraction-for-midfacial-hypoplasia
#1
Jenny L Yu, Albert S Woo
BACKGROUND: Distraction osteogenesis with a rigid external distractor is a widely accepted treatment for midfacial hypoplasia. In this study, the authors introduce the utilization of alar pinning with the external halo distractor for maxillary advancement, in place of an oral splint. METHODS: A retrospective chart review was conducted of 7 patients who successfully underwent distraction osteogenesis using the alar pinning technique. Midfacial hypoplasia was secondary to Crouzon syndrome (n = 4), Apert syndrome (n = 1), Pfeiffer syndrome (n = 1), or bacterial meningitis (n = 1)...
May 31, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28570410/nasal-soft-tissue-change-following-bimaxillary-orthognathic-surgery
#2
Hye-In Jeong, Ho-Sung Lee, Young-Soo Jung, Hyung-Sik Park, Hwi-Dong Jung
OBJECTIVE: The purpose of this study is to identify the correlation between maxillary movement and nasal soft tissue changes on three-dimensional reconstructed cone beam computed tomography (CBCT) images after Le Fort I osteotomy. MATERIALS AND METHODS: The authors also investigate the long-term change of alar base width (ABW) to determine the effect of cinch suture. The authors retrospectively studied 52 subjects (14 males and 38 females) who were treated by bimaxillary orthognathic surgery including Le Fort I osteotomy and mandibular ramus surgery...
May 31, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28562535/the-structural-changes-of-upper-airway-and-newly-developed-sleep-breathing-disorders-after-surgical-treatment-in-class-iii-malocclusion-subjects
#3
Ui Lyong Lee, Hoon Oh, Sang Ki Min, Ji Ho Shin, Yong Seok Kang, Won Wook Lee, Young Eun Han, Young Jun Choi, Hyun Jik Kim
Bimaxillary surgery is the traditional treatment of choice for correcting class III malocclusion which is reported to cause an alteration of oropharyngeal structures and upper airway narrowing that might be a predisposing factor for obstructive sleep apnea (OSA). This study aimed to analyze sleep parameters in class III malocclusion subjects and ascertain the prevalence of snoring or OSA following bimaxillary surgery.A total of 22 patients with Le Fort I osteotomy and mandibular setback for class III malocclusion were prospectively enrolled...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28528359/anatomic-basis-of-le-fort-1-impaction-osteotomy-a-radiological-study
#4
Rivka Bendrihem, Christian Vacher, Audrey Fohlen, Jean-Pierre Pelage
PURPOSE: In Le Fort 1 osteotomy when a maxillary impaction is necessary, surgeons have to face different anatomical problems. (1) To determine the best bone resection route, they have to consider the situation of dental roots, infraorbital foramen and maxillary artery. (2) In case of Le Fort 1 osteotomy combined with a mandibular sagittal split osteotomy, the palate has to be replaced in horizontal position although there is no anatomical landmark. (3) In case of Gummy smiles, it can be due to either long face or short upper lip...
May 20, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28493922/comparison-of-the-long-term-clinical-performance-of-a-biodegradable-and-a-titanium-fixation-system-in-maxillofacial-surgery-a-multicenter-randomized-controlled-trial
#5
B Gareb, N B van Bakelen, G J Buijs, J Jansma, J G A M de Visscher, Th J M Hoppenreijs, J E Bergsma, B van Minnen, B Stegenga, R R M Bos
BACKGROUND: Biodegradable fixation systems could reduce or eliminate problems associated with titanium removal of implants in a second operation. AIM: The aim of this study was to compare the long-term (i.e. >5 years postoperatively) clinical performance of a titanium and a biodegradable system in oral and maxillofacial surgery. MATERIALS AND METHODS: The present multicenter Randomized Controlled Trial (RCT) was performed in four hospitals in the Netherlands...
2017: PloS One
https://www.readbyqxmd.com/read/28489659/relationship-between-the-quantity-of-nerve-exposure-during-bilateral-sagittal-split-osteotomy-surgery-and-sensitive-recovery
#6
Paolo Gennaro, Maria Elisa Giovannoni, Niccolò Pini, Ikenna Valentine Aboh, Guido Gabriele, Giorgio Iannetti, Flavia Cascino
AIM AND OBJECTIVES: The purpose of this study was to evaluate how different exposures of the V3 nerves during orthognathic surgery impact neurosensory disturbances. METHODS: The study included 127 patients who underwent either bilateral sagittal split osteotomy (BSSO) or BSSO with maxillary le Fort 1. They were divided into 6 groups, identified by the quantity of V3 nerve exposure. All patients were examined in a pre-op period and again after 1, 3, 6 months post-op...
May 9, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28466191/operative-time-blood-loss-hemoglobin-drop-blood-transfusion-and-hospital-stay-in-orthognathic-surgery
#7
Ra'ed Ghaleb Salma, Fahad Mohammed Al-Shammari, Bishi Abdullah Al-Garni, Mohammed Abdullah Al-Qarzaee
PURPOSE: This study was conducted to evaluate the operative time, blood loss, hemoglobin drop, blood transfusion, and length of hospital stay in orthognathic surgery. METHODS: A 10-year retrospective analysis was performed on patients who underwent bilateral sagittal split osteotomy (with or without genioplasty), Le Fort I osteotomy (with or without genioplasty), or any combination of these procedures. A total of 271 patients were included. RESULTS: The age range was 17 to 49 years, with a mean age of 24...
June 2017: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28432875/one-step-surgical-correction-of-transverse-and-anteroposterior-maxillary-deficiencies-using-wire-fixation-a-new-approach-and-long-term-stability
#8
Max Domingues Pereira, Vivian Farfel, Gabriela Pereira Ribeiro Prado, Lydia Masako Ferreira
PURPOSE: To describe a retrospective assessment of the long-term stability of a new approach using wire fixation for 1-step surgical correction of transverse and anteroposterior maxillary deficiencies. PATIENTS AND METHODS: The authors implemented a case series of 5 adult patients (3 men and 2 women; mean age, 31.4 yr) needing maxillary advancement less than 5 mm and had transverse maxillary deficiency greater than 7 mm who underwent total Le Fort I and median palatal suture osteotomies and had their maxilla advanced and stabilized bilaterally with stainless steel wire...
March 22, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28365716/displacement-patterns-of-the-maxilla-during-parallel-and-rotational-setback-movements-a-finite-element-analysis
#9
Oğuz Buhara, Erkan Erkmen, Kaan Orhan
BACKGROUND The purpose of this analysis was to evaluate the displacement patterns of the maxilla under parallel and rotational setbacks using the finite element method (FEM). MATERIAL AND METHODS A three-dimensional (3D) finite element model of a hemimaxilla was constructed. Through a conventional Le Fort I osteotomy, 2 and 3 mm of posterior movement in a parallel and rotational manner were simulated and the displacement pattern of the maxilla in each movement type was evaluated. RESULTS Both parallel and rotational setbacks resulted in lateral and inferior displacement of the maxillary segment...
April 2, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28330569/mechanical-stability-of-2-plate-versus-4-plate-osteosynthesis-in-advancement-le-fort-i-osteotomy-an-in-vitro-study
#10
L Pozzer, S Olate, L Cavalieri-Pereira, P Navarro, J R de Albergaría Barbosa
INTRODUCTION: Stability in orthognathic surgery is nowadays considered as efficient and adequate. The objective of this study was to determine and to compare the mechanical resistance to vertical load of a Le Fort I advancement osteotomy stabilized by mean of two different osteosynthesis techniques, one using two 10-hole pre-bent T-shaped plates, the other using four manually bent 4-hole L- and J-shaped plates. MATERIEL AND METHODS: Standardized Le Fort I advancement osteotomies have been made on polyurethane models...
February 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28248616/precision-of-le-fort-i-osteotomy-planning-versus-outcome-a-multi-centre-retrospective-study
#11
Stefan Abela, David Tewson, Sharon Prince, Martyn Sherriff, Dirk Bister
INTRODUCTION: The purpose of this study was to evaluate the accuracy of Le Fort I surgery by comparing planned surgical movements with actual outcomes. MATERIALS AND METHODS: A minimum number of seven consecutive cases that had undergone a Le Fort I osteotomy procedure alone or in combination with a mandibular osteotomy from six different hospital units in the East of England between 2009 and 2010 were identified. A total of 56 cases met the inclusion criteria where surgical splints were used and model surgery had been performed...
March 2017: Journal of Orthodontics
https://www.readbyqxmd.com/read/28238562/evaluation-of-maxillary-sinus-after-le-fort-i-osteotomy-using-various-fixation-materials
#12
Koichiro Ueki, Kunio Yoshizawa, Akinori Moroi, Asami Hotta, Takamitsu Tsutsui, Kenichi Fukaya, Ryota Hiraide, Akihiro Takayama, Tatsuya Tsunoda, Yuki Saito, Ran Iguchi, Akihiko Kosaka, Hiroumi Ikawa
PURPOSE: The purpose of this study was to evaluate maxillary sinus and predict the factors affecting the postoperative sinus condition after Le Fort I osteotomy using various fixation materials. MATERIALS AND METHODS: The study subjects consisted of 71 patients (21 male and 50 female, 142 sides) who underwent Le Fort I osteotomy with sagittal split ramus osteotomy. The maxillary sinus bony area and the inside air area were measured in the coronal plane across the mesial aspect of the first molar perpendicular to the Frankfurt horizontal plane of a computed tomography (CT) image preoperatively and at 1 week and 1 year after surgery...
January 31, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28154745/transverse-expansion-and-stability-after-segmental-le-fort-i-osteotomy-versus-surgically-assisted-rapid-maxillary-expansion-a-systematic-review
#13
REVIEW
Thomas Starch-Jensen, Tue Lindberg Blæhr
OBJECTIVES: The objective of the present systematic review was to test the hypothesis of no difference in transverse skeletal and dental arch expansion and relapse after segmental Le Fort I osteotomy versus surgically assisted rapid maxillary expansion. MATERIAL AND METHODS: A MEDLINE (PubMed), Embase and Cochrane library search in combination with a hand-search of relevant journals was conducted by including human studies published in English from January 1, 2000 to June 1, 2016...
October 2016: Journal of Oral & Maxillofacial Research
https://www.readbyqxmd.com/read/28153564/computer-assisted-surgical-planning-and-simulation-for-unilateral-condylar-benign-lesions-causing-facial-asymmetry
#14
Chuan Lu, Dongmei He, Chi Yang, Dong Huang, Edward Ellis
OBJECTIVE: The purpose of this study was to investigate the best surgical sequence for the treatment of unilateral condylar benign lesions causing facial asymmetry by applying computer-assisted surgical planning and simulation. STUDY DESIGN: Computed tomography (CT) data from 12 patients whose maxillary cant was corrected by maintaining the vertical position of the central incisors and equally intruding the long side of the maxilla and extruding the short side were analyzed by ProPlan CMF 1...
April 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28141644/midfacial-changes-through-anterior-maxillary-distraction-osteogenesis-in-patients-with-cleft-lip-and-palate
#15
Hiroyuki Kanzaki, Yoshimichi Imai, Tetsu Nakajo, Takayoshi Daimaruya, Akimitsu Sato, Masahiro Tachi, Youhei Nunomura, Yusuke Itagaki, Kazuaki Nishimura, Shoko Kochi, Kaoru Igarashi
Maxillary hypoplasia is a major issue in cleft lip and palate patients, and predictable surgical maxillary advancement is required. In the present study, the changes and stability of the maxilla and soft tissue profile achieved after the application of anterior maxillary distraction osteogenesis (AMDO) using intraoral expander in unilateral cleft lip and palate and isolated cleft palate patients were investigated by comparing to the Le Fort I osteotomy (LFI) and maxillary distraction osteogenesis (DO) with rigid external distraction (RED) system...
June 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28128659/remifentanil-reduces-blood-loss-during-orthognathic-surgery
#16
Nobuyuki Matsuura, Taiki Okamura, Satoko Ide, Tatsuya Ichinohe
Remifentanil is reported to reduce oral tissue blood flow. We performed a retrospective investigation using logistic regression analysis of anesthesia records to investigate whether the use of remifentanil infusion in a balanced anesthesia technique was useful as a primary technique to reduce blood loss during orthognathic surgery. Subjects were 80 patients who underwent Le Fort I osteotomy and sagittal split ramus osteotomy of the mandible. The variables included gender, age, weight, type of maintenance anesthetic, type and dose or infusion rate of opioid, mean systolic blood pressure (SBP-mean), coefficient of variation of systolic blood pressure (CVSBP) during surgery, mean heart rate (HR-mean), duration of surgery, total blood loss, volume of infusion used, amount of local anesthetic used, body temperature, and urine output...
2017: Anesthesia Progress
https://www.readbyqxmd.com/read/28060091/midface-distraction-osteogenesis-using-a-modified-external-device-with-elastic-distraction-for-crouzon-syndrome
#17
Haizhou Tong, Lei Liu, Xiaojun Tang, Tao Song, Ningbei Yin, Zhiyong Zhang, Zhenmin Zhao
PURPOSE: Midface distraction osteogenesis has been popularized for the correction of midface hypoplasia associated with exophthalmos and obstructive sleep apnea in patients with Crouzon syndrome. The purpose of this study was to present the method of utilizing the modified external device with elastic distraction for the midface advancement in Crouzon syndrome, and the clinical outcomes and skeletal changes were analyzed. METHODS: Five consecutive patients with Crouzon syndrome underwent Le Fort III osteotomy with midface advancement using a modified external device with elastic distraction...
January 5, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27997450/acellular-dermal-matrix-as-an-adjunct-material-in-cleft-le-fort-i-osteotomies
#18
Srinivas M Susarla, Zoe M MacIsaac, Edward Swanson, Edward Davidson, Anand Kumar
PURPOSE: To evaluate the use of acellular dermal matrix in the management of nasal lining deficiency at the time of Le Fort I osteotomy. METHODS: This was a retrospective cohort study of patients with residual/recurrent oronasal fistulae who underwent Le Fort I osteotomy. In instances where there was an inadequate volume of nasal mucosa for tension-free closure or for defects >1 cm in width, the acellular dermal matrix was used for augmentation. Demographic and cleft-related factors were recorded...
January 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27942547/evaluation-of-condylar-position-after-orthognathic-surgery-for-treatment-of-class-ii-vertical-maxillary-excess-and-mandibular-deficiency-by-using-cone-beam-computed-tomography
#19
Reza Tabrizi, Shoaleh Shahidi, Emad Bahramnejad, Hamidreza Arabion
STATEMENT OF THE PROBLEM: In orthognathic surgeries, proper condylar position is one of the most important factors in postoperative stability. Knowing the condylar movement after orthognathic surgery can help preventing postoperative instabilities. PURPOSE: The aim of this study was to evaluate the condylar positional changes after Le Fort I maxillary superior repositioning along with mandibular advancement by using cone beam computed tomography (CBCT). MATERIALS AND METHOD: This cross-sectional study was conducted on 22 subjects who had class II skeletal malocclusion along with vertical maxillary excess...
December 2016: Journal of Dentistry
https://www.readbyqxmd.com/read/27922954/midface-advancement-in-a-simple-approach
#20
Herman Jr Vercruysse, Ramon Sieira-Gil, Alfons Navarro, Eloy Garcia-Diez
BACKGROUND: Midface advancement is a keystone intervention in the treatment plan of syndromic hypoplasia of the midface. Although earlier authors had been using a combination of smaller incisions to acquire enough access to perform the different osteotomies, Tessier popularized the bicoronal incision. This approach can be time-consuming however and leaves an ear-to-ear scar. The authors describe an endoscopically assisted piezo-electric Le Fort III osteotomy performed through minimal invasive access...
January 2017: Journal of Craniofacial Surgery
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