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Le fort 1 Osteotomy

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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
#1
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/27856148/evaluation-of-benign-paroxysmal-positional-vertigo-following-le-fort-i-osteotomy
#2
K Deniz, S S Akdeniz, A Ö Koç, S Uçkan, L N Ozluoğlu
The Le Fort I osteotomy is widely used to correct dentofacial deformities. Benign paroxysmal positional vertigo (BPPV) is a common vestibular end organ disorder characterized by short, often recurrent episodes of vertigo. Head trauma is one of the known causes of BPPV. During pterygoid osteotomy, the surgical trauma induced by percussion with the surgical mallet and osteotomes can displace otoliths into the semicircular canal, resulting in BPPV. The aim of this study was to evaluate the potential risk of occurrence of BPPV in individuals undergoing Le Fort I osteotomy...
November 14, 2016: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27825755/prevalence-of-infection-with-the-use-of-%C3%AE-tricalcium-phosphate-as-a-bone-graft-substitute-during-le-fort-i-osteotomy
#3
M Ragaey, J E Van Sickels
While grafting with bone substitutes has been shown to provide greater stability in maxillary advancements, infection remains a concern with any material that is placed in close proximity to the maxillary sinus. The purpose of this study was to evaluate the prevalence of infection in maxillary advancements in which a bone graft substitute (β-tricalcium phosphate; β-TCP) was placed at the time of surgery. This was a retrospective study of all maxillary osteotomies. Patients were divided into two groups: group 1 included maxillary osteotomies in which β-TCP was not used; group 2 included any maxillary osteotomy where β-TCP was used...
November 5, 2016: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27810549/technical-modifications-for-intraoral-quadrangular-le-fort-ii-osteotomy
#4
Clemens Klug, Julia Cede
PURPOSE: The intraoral quadrangular Le Fort II osteotomy (IQLFIIO) represents a reliable surgical method in cases of midfacial deficiency with good functional, esthetic, and stable long-term results. PATIENTS AND METHODS: In this technical note, we present 3 surgical modifications to previous reports: 1) inferior orbital rim osteotomy by angulated piezosurgical instruments, thereby avoiding the use of chisels in the orbital region; 2) osteosynthetic fixation only laterally at the zygomatic buttress with 2 L-shaped miniplates, thus avoiding paranasal osteosynthesis; and 3) advancement step camouflage in the lateral infraorbital region with a compound mass of autologous bone chips and fibrin glue with the intention to reduce bone block-associated side effects...
October 6, 2016: Journal of Oral and Maxillofacial Surgery
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
#5
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/27756554/removal-of-osteosynthesis-material-because-of-symptoms-after-le-fort-i-osteotomy-a-retrospective-study-of-158-patients
#6
Jop P Verweij, Gert J M Hassing, Marta Fiocco, Pascal N W J Houppermans, J P Richard van Merkesteyn
The aim of this study was to analyse the incidence of removal of MESH plates because of symptoms after Le Fort I osteotomy (LF1). The medical files of patients treated with LF1 were retrospectively reviewed. The occurrence of MESH plate removal, indication for removal and time between insertion and removal were noted. The medical literature was reviewed to quantify the reported incidences of removal of titanium osteosynthesis material after LF1. A total of 158 patients were included in this study. LF1 was performed and fixed with MESH plates in 150 patients...
September 23, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27746257/surgical-site-infections-following-bimaxillary-orthognathic-osseous-genioplasty-and-intranasal-surgery-a%C3%A2-retrospective-cohort-study
#7
Jeffrey C Posnick, Elbert Choi, Anish Chavda
PURPOSE: Frequency estimates of surgical site infection (SSI) after orthognathic surgery vary considerably. The purpose of this study was to determine the incidence and site of SSIs and associated risk factors after bimaxillary orthognathic, osseous genioplasty, and intranasal surgery. MATERIALS AND METHODS: The authors executed a retrospective cohort study of patients with a bimaxillary developmental dentofacial deformity (DFD) and symptomatic chronic obstructive nasal breathing...
September 20, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27689965/maxillary-distraction-osteogenesis-versus-orthognathic-surgery-for-cleft-lip-and-palate-patients
#8
Dimitrios Kloukos, Piotr Fudalej, Patrick Sequeira-Byron, Christos Katsaros
BACKGROUND: Cleft lip and palate is one of the most common birth defects and can cause difficulties with feeding, speech and hearing, as well as psychosocial problems. Treatment of orofacial clefts is prolonged; it typically commences after birth and lasts until the child reaches adulthood or even into adulthood. Residual deformities, functional disturbances, or both, are frequently seen in adults with a repaired cleft. Conventional orthognathic surgery, such as Le Fort I osteotomy, is often performed for the correction of maxillary hypoplasia...
September 30, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27677685/combined-use-of-facial-osteoplasty-and-orthognathic-surgery-for-treatment-of-dentofacial-deformities
#9
Yunfeng Li, Zhiai Hu, Bin Ye, Yao Liu, Xiaochun Ren, Songsong Zhu
PURPOSE: Orthognathic surgery is an efficient procedure for cosmetic and functional aims. However, when functional improvement is achieved by mandibular or maxillary operations, additional esthetic corrections may be imperative for some patients. This study aims to introduce our primary practice of simultaneous facial bone contouring and orthognathic surgery for esthetic reasons. PATIENTS AND METHODS: Ten patients with dentofacial deformities as well as a prominent angle, asymmetric deformities, or a high zygoma and zygomatic arch were recruited from West China Hospital of Stomatology, Sichuan University (Chengdu, China), between January 1, 2014, and July 31, 2015...
December 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27639153/hemimandibular-elongation-is-the-corrected-occlusion-maintained-long-term-does-the-mandible-continue-to%C3%A2-grow
#10
Jeffrey C Posnick, Jorge Perez, Anish Chavda
PURPOSE: The purpose of this study was to assess for the maintenance of a corrected occlusion and ongoing mandibular growth in a group of patients younger than 26 years with hemimandibular elongation (HME) who underwent bimaxillary orthognathic reconstruction. MATERIALS AND METHODS: We conducted a retrospective cohort study of HME patients operated on by a single surgeon at 1 institution between 1999 and 2013. At a minimum, all patients underwent Le Fort I and bilateral sagittal ramus osteotomies...
August 24, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27622116/three-dimensional-nasolabial-morphologic-alterations-following-le-fort-i
#11
Christopher R DeSesa, Philip Metzler, Rajendra Sawh-Martinez, Derek M Steinbacher
BACKGROUND: Le Fort I osteotomy imparts significant changes to the nasolabial region. Past studies have relied on 2-dimensional data and have not delineated differences among various Le Fort I subtypes. The purpose of this study is to 3-dimensionally analyze Le Fort I-induced nasal and lip changes comparing advancement alone versus widening alone [surgically assisted maxillary expansion (SAME)] versus advancement and widening. We hypothesize that the combination of maxillary advancement with widening will result in the most profound changes...
August 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/27582287/frontal-view-nasolabial-soft-tissue-alterations-after-bimaxillary-orthognathic-surgery-in-class-iii-patients
#12
Siamak Hemmatpour, Fatemeh Kadkhodaei Oliadarani, Ali Hasani, Vahid Rakhshan
INTRODUCTION: The aim of this before-after clinical trial was to evaluate nasolabial soft tissue changes in the frontal plane after bimaxillary surgery. METHODS: A total of 20 skeletal Class III Iranian patients needing bimaxillary Le Fort I osteotomy plus mandibular setback surgery were enrolled in this trial. Patients underwent 4.02 ± 1.02 mm of maxillary advancement (Le Fort I osteotomy, 4.33 ± 1.21 mm in men, 3.81 ± 0.86 mm in women) and 7.13 ± 1...
August 31, 2016: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/27531555/splintless-surgery-does-patient-specific-cad-cam-osteosynthesis-improve-accuracy-of-le-fort-i-osteotomy
#13
J Kraeima, J Jansma, R H Schepers
To analyse the accuracy of maxillary positioning after Le Fort I osteotomy, we retrospectively assessed the outcome in three patients (mean (range) age 40 (21 - 60) years) who had been treated with patient-specific CAD-CAM osteosynthesis plates as part of a bimaxillary osteotomy. Virtual surgical planning in each case was based on cone-beam computed tomography (CT) (Simplant® O&O, Dentsply Implants NV, Kessel-Lo, Belgium), and patient-specific CAD-CAM drilling guides and osteosynthesis plates were produced for maxillary positioning and fixation...
August 13, 2016: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/27525522/implant-rehabilitation-for-extremely-atrophic-maxillae-cawood-type-vi-with-le-fort-i-downgrafting-and-autogenous-iliac-block-grafts-a-4-year-follow-up-study
#14
Altan Varol, Onur Atali, Aysegul Sipahi, Selcuk Basa
PURPOSE: The aim of this 4-year retrospective follow-up study was to investigate treatment outcomes, including implant survival rate and marginal bone loss, in patients with maxillary Cawood type VI atrophy pattern who underwent Le Fort I downgrafting and iliac block augmentations for implant rehabilitation. MATERIALS AND METHODS: Retrognathic edentulous Class III patients with severe maxillary resorption (Cawood VI) were enrolled. Reconstructive procedures performed included Le Fort I maxillary osteotomy, iliac block grafting, labial sulcoplasties, and dental implant placement...
August 15, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27475115/management-of-facial-asymmetry-due-to-overgrowing-costochondral-graft-a-case-report
#15
Arif Razzak, Nabeela Ahmed, Andrew Sidebottom
Costochondral grafts are used to replace the mandibular condyle in cases of TMJ ankylosis, and are generally viewed as a gold standard for autogenous reconstruction of the mandibular condyle (Güven, 2000; Posnick and Goldstein, 1993 [1,2]). We report a case where overgrowth of costochondral grafts is seen, resulting in asymmetric mandibular growth and dentofacial asymmetry (Posnick and Goldstein, 1993 [2]). A 17 year old male patient presented with an existing costochondral graft performed due to TMJ ankylosis during childhood...
2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27425883/computational-fluid-dynamic-study-of-nasal-respiratory-function-before-and-after-bimaxillary-orthognathic-surgery-with-bone-trimming-at-the-inferior-edge-of-the-pyriform-aperture
#16
Soma Kita, Marie Oshima, Kazuo Shimazaki, Toshinori Iwai, Susumu Omura, Takashi Ono
PURPOSE: This study aimed to evaluate the influence of maxillary impaction orthognathic surgery on nasal respiratory function and the efficacy of bone trimming at the inferior edge of the pyriform aperture. MATERIALS AND METHODS: The participants were 10 patients (3 male and 7 female patients) with mandibular prognathism who underwent bimaxillary orthognathic surgery with maxillary impaction. The surgical procedures performed were Le Fort I osteotomy with bone trimming at the inferior edge of the pyriform aperture and bilateral sagittal split osteotomy...
June 21, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27397093/assessment-of-nasal-septum-after-le-fort-i-osteotomy-with-computer-tomography
#17
Akinori Moroi, Kunio Yoshizawa, Takamitsu Tsutsui, Yuriko Saida, Asami Hotta, Kenichi Fukaya, Ryota Hiraide, Akihiro Takayama, Tatsuya Tunoda, Yuuki Saito, Koichiro Ueki
The purpose of this study was to evaluate the effects of Le Fort I osteotomy on nasal septum deviation and differences in left and right airway sizes, and to determine whether the nasal septum was affected by differences in the direction of movement. Forty patients underwent conventional Le Fort I osteotomy, and computed tomography (CT) was performed preoperatively, and 1 week and 1 year postoperatively. The nasal septum angle and airway area were measured at the anterior, middle, and posterior positions on the CT images Patients were divided into 2 groups depending on each difference in movement (impaction ≥5 mm or other; anterior movement or other; and impaction asymmetry or other)...
September 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27364371/modified-alar-base-cinch-suture-fixation-at-the-bilateral-lower-border-of-the-piriform-rim-after-a-maxillary-le-fort-i-osteotomy
#18
C Y Yen, C L Kuo, I H Liu, W C Su, H R Jiang, I G Huang, S Y Liu, S Y Lee
Classic cinch suture narrowing of the nasal alar base by medially suturing the bilateral nasolabial soft tissue with one long suture has a limited effect. The modified cinch method described in the present study anchors non-absorbable sutures to the bilateral lower border of the piriform rim and provides optimal direction, position, and stability. The sutures can be shortened and the strength kept stable while the surgical wounds heal. Separate bilateral sutures can also reduce interference and distortion from nasotracheal intubation and make the nasolabial profile more symmetrical...
June 27, 2016: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27349538/short-term-effects-of-orthognathic-surgery-on-somatosensory-function-and-recovery-pattern-in-the-early-postoperative-period
#19
Ko Dezawa, Noboru Noma, Kosuke Watanabe, Yuka Sato, Ryutaro Kohashi, Morio Tonogi, Gary Heir, Eli Eliav, Yoshiki Imamura
We examined the short-term surgical effects of orthognathic surgery on somatosensory function. Observations were made over a short period: 3 months postoperatively. In total, 14 patients and 32 healthy controls participated. Among the 14 patients, one underwent bilateral sagittal split osteotomy alone and 13 underwent bilateral sagittal split osteotomy in combination with a Le Fort I osteotomy. A modified quantitative sensory testing (QST) protocol (the German Research Network on Neuropathic Pain, DFNS) was used to evaluate clinically the skin of the chin for sensory disturbances before surgery and at 1 week, 1 month, and 3 months postoperatively...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/27341469/influence-of-the-orthognathic-surgical-procedure-le-fort-i-osteotomy-on-the-vascularity-and-neurosensory-response-of-the-dental-pulp-a-systematic-review
#20
Vinisha Ranna, Sergio Varela Kellesarian, Changyong Feng, Fawad Javed, Alexis Ghanem
OBJECTIVE: Abnormalities of the midface and maxilla are frequently corrected using Le Fort I surgery. This osteotomy passes near the apices of the maxillary teeth, severing the blood vessels and nerves supplying the teeth. The aim of this review was to determine the effect of Le Fort I osteotomy on pulpal vascularity and neurosensory response. DATA SOURCES: A systematic search of the literature was performed in PubMed/ Medline, Google Scholar, EMBASE, and ISI Web of Knowledge from 1969 up to and including December 2015 using the following key words: Le Fort 1, tooth vitality, maxillary osteotomy, pulp, orthognathic...
2016: Quintessence International
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