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Maxillary osteotomy

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https://www.readbyqxmd.com/read/28223015/surgical-management-of-ankyloses-of-the-temporomandibular-joint-by-a-piezoelectric-device
#1
Giuseppe Spinelli, Domenico Valente, Giuditta Mannelli, Mirco Raffaini, Francesco Arcuri
INTRODUCTION: Piezosurgery is commonly used in different field of craniomaxillofacial surgery; since its introduction it has become one of the widely adopted technique for performing osteotomies in orthognathic surgery, distraction osteogenesis and dentoalveolar surgery. Little has been written regarding ultrasonic system for temporomandibular joint surgery (TMJ). In this prospective study we describe the use of piezoelectric device for ankylosis of the TMJ. MATERIALS AND METHODS: We enrolled in this study 19 patients, 10 males and 9 females, mean (SD) age 24...
December 18, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28169263/comparison-of-soft-tissue-changes-in-simultaneous-maxillomandibular-distraction-with-mandibular-distraction-with-second-stage-maxillary-osteotomy
#2
S M Balaji, Preetha Balaji
BACKGROUND: The purpose of this study was to compare the frontal lip cant changes in common facial asymmetry (FA) cases after simultaneous maxillomandibular distraction osteogenesis (DO) and mandibular DO with maxillary orthognathic surgery. MATERIALS AND METHODS: Retrospective analysis of FA cases at tertiary craniofacial referral was performed. Patients of either gender with all medical imaging records and pre- and post-operative (1 year) facial photographs in natural head position were included in the study...
November 2016: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
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
#3
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
#4
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...
December 7, 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28142007/surgical-splint-design-influences-transverse-expansion-in-segmental-maxillary-osteotomies
#5
Kasper Stokbro, Esben Aagaard, Peter Torkov, Lillian Marcussen, R Bryan Bell, Torben Thygesen
PURPOSE: In segmental maxillary procedures, it is imperative to obtain as much of the planned expansion as possible. Lack of obtained expansion, in addition to late relapse after splint removal, can result in relapse of the posterior crossbite. This study investigated the influence of 2 surgical splint designs on achieving the planned transverse expansion in bimaxillary surgery with segmental maxillary procedures. MATERIALS AND METHODS: Forty-two participants were included in a retrospective observational study...
January 4, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28141644/midfacial-changes-through-anterior-maxillary-distraction-osteogenesis-in-patients-with-cleft-lip-and-palate
#6
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...
January 30, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28122898/post-operative-avascular-necrosis-of-the-maxilla-a-rare-complication-following-orthognathic-surgery
#7
Trevor A Teemul, Jean Perfettini, David O Morris, John L Russell
We present a patient with sickle cell trait who suffered avascular necrosis of the maxilla as a complication of maxillary osteotomy. Understanding the blood supply of the maxilla and how possible patient related, anaesthetic and operative factors affect it, is important in understanding how the vascularity of the maxilla can become compromised in a surgical procedure. The perioperative parameters were analysed to identify any prognostic elements. Avascular necrosis of the maxilla is a rare complication of orthognathic surgery with few cases reported in the literature...
January 24, 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28114219/physical-therapy-for-smile-improvement-after-orthognathic-surgery
#8
Sung Ok Hong, Seung-Hak Baek, Jin-Young Choi
The purpose of this study was to investigate the effect of physical therapy for smile improvement on the smile esthetics-related properties after orthognathic surgery. The samples consisted of 44 adult patients (13 males and 31 females; mean age of 22.6 years old), who had undergone LeFort I osteotomy and BSSRO by a single surgeon. After a video clip of smile education was shown to patients (see Supplemental Digital Content, Video, http://links.lww.com/SCS/A238), smile training of 5 minutes per day was started 1-month after surgery for 3 months...
January 20, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28111283/morphological-impact-on-patients-of-maxillomandibular-advancement-surgery-for-the-treatment-of-obstructive-sleep-apnea-hypopnea-syndrome
#9
Thibaut Beranger, Emilie Garreau, Joël Ferri, Gwenael Raoul
INTRODUCTION: The aim of this study is to evaluate the experience of patients who have benefited from maxillomandibular advancement surgery for the treatment of obstructive sleep apnea-hypopnea syndrome (OSAHS), and also the morphological modifications measured on pre- and postoperative lateral headfilms. PATIENTS AND METHODS: Twenty-three patients aged 24 to 64 (M=46.8) who had undergone bimaxillary advancement osteotomy for the treatment of OSAHS filled in a questionnaire concerning their overall satisfaction following surgery, the modification of their facial appearance as perceived by themselves and their family and friends, the change in their smile, and the slimmer and more youthful appearance of their face...
January 19, 2017: International Orthodontics
https://www.readbyqxmd.com/read/28106695/velopharyngeal-insufficiency-after-le-fort-i-osteotomy-in-a-patient-with-undiagnosed-occult-submucous-cleft-palate
#10
Rushil R Dang, Bonnie L Padwa, Cory M Resnick
The authors present a 16-year-old patient with no known history of cleft palate who developed velopharyngeal insufficiency after a Le Fort I osteotomy performed for the correction of maxillary hypoplasia and a Class III malocclusion. Postoperative evaluation revealed the presence of velopharyngeal insufficiency and subtle findings of an occult submucous cleft palate. She had a pharyngeal flap 6 months later with successful correction of the velopharyngeal insufficiency. This case illustrates the need to screen for submucous cleft palate prior to orthognathic surgery...
January 18, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28089839/maxillary-artery-to-middle-cerebral-artery-bypass-a-novel-technique-for-exposure-of-the-maxillary-artery
#11
Kaan Yagmurlu, M Yashar S Kalani, Nikolay L Martirosyan, Sam Safavi-Abbasi, Evgenii Belykh, Avra S Laarakker, Peter Nakaji, Joseph M Zabramski, Mark C Preul, Robert F Spetzler
OBJECTIVES: Define the maxillary artery (MaxA) anatomy and present a novel technique for exposing and preparing this vessel as a bypass donor. METHODS: Cadaveric and radiological studies were used to define the MaxA anatomy and illustrate a novel method for harvesting and preparing it for extracranial-to-intracranial bypass. RESULTS: The MaxA runs parallel to the frontal branch of the superficial temporal artery (STA) and is located on average 24...
January 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28060088/maxillary-expansion-and-mandibular-setback-surgery-with-and-without-mandibular-anterior-segment-osteotomy-to-correct-mandibular-prognathism-with-obstructive-sleep-apnea
#12
Jeong Joon Han, Dong Hwan Hong, Soon Jung Hwang
Mandibular prognathism is usually treated with mandibular setback surgery. However, this approach reduces the pharyngeal airway space, and can aggravate obstructive phenomena in patients with obstructive sleep apnea (OSA). While maxillary expansion is known to lead to an increase in the pharyngeal airway volume (PAS), its effect on the PAS in mandibular setback surgery has not yet been reported. The authors report a surgical approach with maxillary expansion in 2 patients with mandibular prognathism that was accompanied by OSA: maxillary midsagittal expansion with minimum maxillary advancement and minor mandibular setback without mandibular anterior segmental osteotomy (ASO) or major mandibular setback with mandibular ASO...
January 5, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28049608/electromagnetic-navigated-positioning-of-the-maxilla-after-le-fort-i-osteotomy-in-preclinical-orthognathic-surgery-cases
#13
Moritz Berger, Igor Nova, Sebastian Kallus, Oliver Ristow, Urs Eisenmann, Christian Freudlsperger, Robin Seeberger, Jürgen Hoffmann, Hartmut Dickhaus
OBJECTIVES: Inaccuracies in orthognathic surgery can be caused during face-bow registration, model surgery on plaster models, and intermaxillary splint manufacturing. Electromagnetic (EM) navigation is a promising method for splintless digitized maxillary positioning. STUDY DESIGN: After performing Le Fort I osteotomy on 10 plastic skulls, the target position of the maxilla was guided by an EM navigation system. Specially implemented software illustrated the target position by real-time multistage colored three-dimensional imaging...
March 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28048963/effects-of-condensation-on-peri-implant-bone-density-and-remodeling
#14
L Wang, Y Wu, K C Perez, S Hyman, J B Brunski, U Tulu, C Bao, B Salmon, J A Helms
Bone condensation is thought to densify interfacial bone and thus improve implant primary stability, but scant data substantiate either claim. We developed a murine oral implant model to test these hypotheses. Osteotomies were created in healed maxillary extraction sites 1) by drilling or 2) by drilling followed by stepwise condensation with tapered osteotomes. Condensation increased interfacial bone density, as measured by a significant change in bone volume/total volume and trabecular spacing, but it simultaneously damaged the bone...
December 1, 2016: Journal of Dental Research
https://www.readbyqxmd.com/read/28045827/bone-substitutes-in-le-fort-i-osteotomy-to-promote-bone-union-and-skeletal-stability
#15
Leonardo Matos Santolim Zanettini, Guilherme Genehr Fritscher, Ricardo Giacomini De Marco, Fernando de Oliveira Andriola, Rogério Miranda Pagnoncelli
Maxillary advancement by Le Fort I osteotomy has become the standard procedure to restore function and facial esthetics, correct skeletal and occlusal discrepancies, and treat obstructive sleep apnea in patients with facial deformities. Incomplete ossification between the bone segments at the jaw osteotomy site has proven to be a major problem in these patients. There are several studies in the literature that address orthognathic surgery, but only a limited number that discuss the use of graft materials in maxillary osteotomy...
December 30, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28042432/upper-full-arch-rehabilitation-with-sinus-by-pass-with-tilted-implants-via-tapered-threaded-expanders-in-low-density-bone-a-clinical-trial
#16
M Andreasi Bassi, C Andrisani, S Lico, Z Ormanier, C Arcuri
PURPOSE: In the present paper the use of tapered-screw bone expanders (TSBEs) is proposed, in combination with the placement of tilted implants, in close proximity to the anterior sinus wall, solving the problem of the reduced height of the alveolar bone in the sub-antral area. The Authors present a case series of full-arch rehabilitations performed with this procedure named: Tilted Implant Expansion Osteotomy (TIEO). MATERIALS AND METHODS: 12 patients (5 males and 7 females, average age 58...
April 2016: Oral & Implantology
https://www.readbyqxmd.com/read/28024774/three-dimensional-virtual-surgery-simulation-assisted-asymmetric-bilateral-mandibular-distraction-osteogenesis-for-a-patient-with-bilateral-condylar-fractures
#17
Myung-Jin Kim, Jihee Seo, Do-Keun Kim, Seung-Hak Baek
INTRODUCTION: Our objective was to report a patient treated with 3-dimensional virtual-surgery simulation-assisted asymmetric bilateral mandibular distraction osteogenesis. METHODS: A boy (age, 9.5 years) had mandibular hypoplasia and facial asymmetry, induced by bilateral condylar fractures at 4 years of age. The asymmetric bilateral mandibular distraction osteogenesis was planned to correct facial asymmetry and mandibular hypoplasia. The 3-dimensional virtual-surgery simulation results were 11 mm of horizontal distraction on the right side and 4...
January 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28024773/comprehensive-treatment-approach-for-condylar-hyperplasia-and-mandibular-crowding-with-custom-lingual-braces-and-2-jaw-surgery
#18
Panagiotis G Kyteas, W Stuart McKenzie, Peter D Waite, Chung H Kau
We report on the successful treatment of a 32-year-old woman with condylar hyperplasia and severe mandibular crowding. In addition, her maxilla was canted to the right, her mandibular midline and chin point deviated to the left, and her maxillary canines were missing. The treatment plan included (1) aligning and leveling the teeth in both arches, (2) correcting overbite and overjet, (3) performing LeFort I osteotomy and bilateral split osteotomies, and (4) correcting the malocclusion postsurgically. The orthodontic treatment was performed with custom lingual braces and clear brackets, and virtual surgical planning techniques were used to plan the orthognathic surgery...
January 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28011183/comparison-of-skeletal-stability-after-sagittal-split-ramus-osteotomy-among-mono-cortical-plate-fixation-bi-cortical-plate-fixation-and-hybrid-fixation-using-absorbable-plates-and-screws
#19
Koichiro Ueki, Akinori Moroi, Kunio Yoshizawa, Asami Hotta, Takamitsu Tsutsui, Kenichi Fukaya, Ryota Hiraide, Akihiro Takayama, Tatsuta Tsunoda, Yuki Saito
PURPOSE: The purpose of this study was to examine skeletal stability and plate breakage after sagittal split ramus osteotomy (SSRO) with the mono-cortical plate fixation, bi-cortical plate fixation, and hybrid fixation techniques using absorbable plates and screws. MATERIALS AND METHODS: A total of 76 Japanese patients diagnosed with mandibular prognathism with and without maxillary deformity were divided into 3 groups randomly. A total of 28 patients underwent SSRO with mono-cortical plate fixation, 23 underwent SSRO with bi-cortical plate fixation, and 25 underwent SSRO with hybrid fixation...
November 19, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28005730/correction-of-a-long-face-simultaneous-reduction-of-the-upper-lip-using-a-modified-endonasal-technique-and-le-fort-i-osteotomy-superior-impaction
#20
Seungil Chung, Sanghoon Park
BACKGROUND: Although Le Fort I osteotomy superior impaction during bimaxillary surgery is beneficial for patients with a long face, achieving satisfactory results can be challenging due to the redundant upper lip. However, upper-lip reduction has rarely been performed during or following bimaxillary surgery because of the difficulty in estimating the required amount of cutaneous resection needed and the apparent horizontal scars left behind. Therefore, no simultaneous cutaneous upper-lip reduction with orthognathic surgery has been reported...
November 2016: Journal of Craniofacial Surgery
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