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Maxillary osteotomy

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https://www.readbyqxmd.com/read/29773499/study-of-condylar-positional-changes-after-sagittal-split-osteotomy-for-mandibular-advancement-a-prospective-cohort-study
#1
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/29770891/crestal-endoscopic-approach-for-evaluating-sinus-membrane-elevation-technique
#2
Samy Elian, Khaled Barakat
Closed sinus lifting is a unique technique in being simple and less invasive (Summers, Compendium 15(6):698, 1994). However, it is blind to assess the safety of sinus lining during lifting without perforation. Previously, sinus membrane was assessed endoscopically in an invasive way. We aimed to judge clinically the sinus membrane integrity after crestal elevation by a direct simple less invasive endoscopic visual assessment through the crestal osteotomy site. To confirm undetected perforation, the sinus membrane was monitored dynamically by introducing the endoscope through a trephined opening in the lateral wall of the sinus (Nkenke et al...
May 17, 2018: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/29763501/influence-of-lateral-windows-with-decreased-vertical-height-following-maxillary-sinus-floor-augmentation-a-1-year-clinical-and-radiographic-study
#3
Wei Lu, Jin Xu, Hui-Ming Wang, Fu-Ming He
PURPOSE: To verify whether lateral sinus floor elevation (LSFE) with the vertical height of the osteotomy decreased to 3 to 5 mm can achieve improvement compared with a conventional lateral window in terms of implant survival, graft stability, and related complications. MATERIALS AND METHODS: Of the 49 patients who were selected for inclusion in this retrospective study, 25 patients were in the test group and 24 were in the control group based on the vertical height of the lateral window...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29757361/effects-of-rhinoplasty-on-labyrinthine-function
#4
Ahmet Mahmut Tekin, Erkan Soylu, Handan Turan Dizdar, Fahrettin Yilmaz, Yildirim Ahmet Bayazit
Background: Rhinoplasty is a common surgical procedure that is requested and accepted by patients for cosmetic and functional reasons. Osteotomies are performed on nasal bone, maxillary crest, or vomer to fix the deviations of the nasal dorsum or septum. During the percussion of the osteotomes with the surgical mallet, the vibration energy diffuses to the cranium. Auditory and vestibular systems may be affected by these vibrations. Objectives: To assess the effects of rhinoplasty, in which osteotomies were performed using a hammer, on the audiovestibular system...
May 11, 2018: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29753777/surgically-assisted-rapid-palatal-expansion-in-class-iii-malocclusion-our-experience
#5
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/29746304/update-on-complications-in-cleft-orthognathic-surgery
#6
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/29732952/clinical-comparison-of-scapular-fibular-and-iliac-crest-osseal-free-flaps-in-maxillofacial-reconstructions
#7
T Wilkman, A Husso, P Lassus
BACKGROUND AND AIMS: This study compared the three most used composite flaps in maxillofacial reconstructions in our institute. PATIENTS AND METHODS: Between 2000 and 2012, a total of 163 patients with mandibular, maxillary, and orbital defects received either scapular, fibular, or iliac crest osseal reconstructions in Helsinki University Hospital, Departments of Plastic Surgery and Maxillofacial Surgery. Data regarding the patient demographics, complications, and outcomes were analyzed...
May 1, 2018: Scandinavian Journal of Surgery: SJS
https://www.readbyqxmd.com/read/29732665/novel-electrical-conductivity-device-for-osteotomy-preparation-for-dental-implants-placement-a-cadaver-study
#8
Adi Lorean, Noa Barer, Horia Barbu, Liran Levin
OBJECTIVES: To evaluate the accuracy, safety, and anticipation effect of a novel electrical conductivity device (SG) in maxillary osteotomy preparation for placement of dental implants. MATERIALS AND METHODS: Thirty-seven osteotomies were prepared by three operators with different levels of expertise, using the SG protocol in the maxilla of six fresh frozen cadavers. A pre-op CT measurement of the length of bone in the desired implant location was taken and compared with the final length of the osteotomy created using SG during surgery...
May 6, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29660062/minimally-invasive-exposure-of-the-maxillary-artery-at-the-anteromedial-infratemporal-fossa
#9
Roberto Rodriguez Rubio, Olivia Kola, Ali Tayebi Meybodi, Halima Tabani, Xuequan Feng, Jan-Karl Burkhardt, Sonia Yousef, Michael T Lawton, Arnau Benet
BACKGROUND: The maxillary artery (MA) has been described as a reliable donor for extracranial-intracranial high-flow bypass. Existing techniques to harvest MA require brain retraction and drilling of the middle fossa (with or without a zygomatic osteotomy), carrying the potential risks of venous bleeding, injury to the branches of the maxillary or mandibular nerves, muscular transection, or temporomandibular junction disorders. OBJECTIVE: To describe a novel technique to expose the MA without bony drilling and with minimal impact to surrounding structures...
April 12, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29651386/tissue-engineering-in-maxillary-bone-defects
#10
Azizollah Khodakaram-Tafti, Davood Mehrabani, Hanieh Shaterzadeh-Yazdi, Barbad Zamiri, Mahsa Omidi
BACKGROUND: Restoration of craniofacial bone defects has been a concern for oral and maxillofacial surgeons. In this study, the healing effect of fibrin glue scaffold was compared with autologous bone graft in mandibular defects of rabbit. METHODS: Bilateral unicortical osteotomy was performed in the diastema region of 10 male Dutch rabbits. The subjects were randomly divided into 2 equal groups. The mandibular defect on the right side was treated with fibrin glue scaffold and the defect on the left side with autologous bone graft provided from iliac crest...
January 2018: World Journal of Plastic Surgery
https://www.readbyqxmd.com/read/29621077/modified-rotational-anterior-segmental-osteotomy-for-prevention-of-common-complication-aged-appearance
#11
Bong-Kyoon Choi, Won Lee, Lun-Jou Lo, Eun-Jung Yang
Although anterior segmental osteotomy (ASO) is powerful procedures in treating the patient who has bimaxillary dentoalveolar protrusion, there is significant change in all soft and hard tissue parameters. Soft tissue changes in response to ASO can have a deleterious effect of an aged appearance. To prevent this aged appearance, the authors tried to rotate the maxillary anterior segment rather than simply posteriorly translating the segments. The application of a clockwise pivot rotation method during ASO can prevent overcorrection by controlling the degree of setback of the piriform aperture, and it can also affect convexity of the facial profile...
April 4, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29594998/-application-of-bone-support-guide-by-three-dimensional-printing-technique-in-maxillary-lefort%C3%A2-osteotomy
#12
Qu Zhenyu, Wang Qian, Zhao Yan, Sheng Lanlan, Ma Weidong, Qu Weiguo
OBJECTIVE: This study aimed to investigate the application of an osteotomy template and a repositioning template manufactured by three-dimensional (3D) printing technique in maxillary LeFortⅠosteotomy. METHODS: The patient group consisted of eight patients with maxillary hypoplasia who underwent LeFortⅠosteotomy. The mean age at the time of surgery was 25.6 years old. All patients were scanned using cone beam computed tomography (CBCT) to create a 3D model of the maxillary...
February 1, 2018: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
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/29545032/time-course-change-in-temporomandibular-joint-space-after-advancement-and-setback-mandibular-osteotomy-with-le-fort-i-osteotomy
#14
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
#15
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/29531936/novel-condylar-repositioning-method-for-3d-printed-models
#16
Keisuke Sugahara, Yoshiharu Katsumi, Masahide Koyachi, Yu Koyama, Satoru Matsunaga, Kento Odaka, Shinichi Abe, Masayuki Takano, Akira Katakura
Background: Along with the advances in technology of three-dimensional (3D) printer, it became a possible to make more precise patient-specific 3D model in the various fields including oral and maxillofacial surgery. When creating 3D models of the mandible and maxilla, it is easier to make a single unit with a fused temporomandibular joint, though this results in poor operability of the model. However, while models created with a separate mandible and maxilla have operability, it can be difficult to fully restore the position of the condylar after simulation...
December 2018: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29517401/revision-edcr-using-a-superior-pedicled-mucosal-flap
#17
Sarina K Mueller, Suzanne K Freitag, Daniel R Lefebvre, Nahyoung G Lee, Benjamin S Bleier
BACKGROUND: Endoscopic dacryocystorhinostomies (eDCRs) show patency rates between 81% and 94%. However, dacryocystorhinostomy (DCR) failure and the need for revision remain a significant challenge. One of the principal challenges in revision eDCR is the need to surgically identify the correct osteotomy site and maintain long-term patency in the setting of previously instrumented and potentially scarred tissue. At the same time, the surgeon must assume that the blood supply to the commonly described anterior and posteriorly pedicled flaps has been compromised...
March 8, 2018: Orbit
https://www.readbyqxmd.com/read/29500899/novel-variations-in-spatial-relations-between-the-facial-nerve-and-superficial-temporal-and-maxillary-veins
#18
Walid El Kininy, Shane Davy, Leo Stassen, Denis Stephen Barry
Variations in the relationship of the retromandibular vein to the facial nerve have been widely reported due to their relevance for surgical approaches in parotid, osteotomy and mandibular condyle surgery. In the context of the retromandibular retroparotid approach, remaining deep to the retromandibular vein is advised to decrease the likelihood of encountering the facial nerve during mandibular condyle surgery. In the present report, an unusual variant of the superficial temporal vein lying superficial to the facial nerve is described...
March 3, 2018: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/29498976/ruptured-pseudoaneurysm-of-the-maxillary-artery-and-its-branches-following-le-fort-i-osteotomy-evidence-based-guidelines
#19
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
#20
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
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