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Mandibular osteotomy

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https://www.readbyqxmd.com/read/28550832/-osteosynthesis-in-the-surgical-treatment-of-prognathism-state-of-the-art
#1
REVIEW
Nuno Durão, José Amarante
INTRODUCTION: Prognathism is a common skeletal facial abnormality, associated with class III malocclusion, often with repercussions in quality of life. In addition to orthodontic treatment, sagittal split ramus osteotomy is the most common technique for its correction, and segment osteosynthesis is an important element of the post-surgical outcome. MATERIALS AND METHODS: A search for relevant literature was conducted in the PubMed/MEDLINE database and in other relevant sources...
March 31, 2017: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/28541156/biomechanical-evaluation-of-two-plating-configurations-for-fixation-of-a-simple-transverse-caudal-mandibular-fracture-model-in-cats
#2
Christopher L Greiner, Frank J M Verstraete, Susan M Stover, Tanya C Garcia, Dustin Leale, Boaz Arzi
OBJECTIVE To evaluate biomechanical properties of intact feline mandibles, compared with those for mandibles with an experimentally created osteotomy that was stabilized with 1 of 2 internal fixation configurations. SAMPLE 20 mandibles from 10 adult feline cadavers. PROCEDURES An incomplete block study design was used to assign the mandibles of each cadaver to 2 of 3 groups (locking plate with locking screws [locking construct], locking plate with nonlocking screws [nonlocking construct], or intact). Within each cadaver, mandibles were randomly assigned to the assigned treatments...
June 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28528359/anatomic-basis-of-le-fort-1-impaction-osteotomy-a-radiological-study
#3
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/28502569/an-in%C3%A2-vitro-comparison-study-of-the-use-of-a-drill-or-a-saw-in-the-hunsuck-dal-pont-modification-of-the-obwegeser-sagittal-split-osteotomy-in-pig-mandibles
#4
Roland Böckmann, Klaus Neuking, Peter Kessler
PURPOSE: Fracture lines in unfavorable locations are referred to as "bad splits" in a mandibular sagittal split osteotomy (SSO). Several modifications of the technique by Obwegeser have been introduced to minimize this risk. This in vitro study was performed to determine whether the shape of the osteotomy cut affects the torque and the fracture pattern of an SSO in pig mandibles. MATERIALS AND METHODS: In a split-mouth model, 16 mandibles were split according to the Hunsuck-Dal Pont modification of the Obwegeser technique...
April 17, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28500875/upper-airway-changes-after-mandibular-setback-and-or-advancement-genioplasty-in-obese-patients
#5
Wen Du, Dongming He, Yiyao Wang, Hanghang Liu, Chuhang Liao, Wei Fei, En Luo
PURPOSE: Orthognathic surgeries, such as bilateral sagittal split ramus osteotomy (BSSO) and genioplasty, can influence the pharyngeal airway space (PAS) and this has been supported by previous studies. The purpose of this study was to assess changes of the PAS in patients with a high body mass index (BMI) likely to have narrow airways before and after setback BSSO with or without advancement genioplasty surgery by 3-dimensional computed tomography. MATERIALS AND METHODS: Thirty-five adults with a BMI of at least 24...
April 19, 2017: Journal of Oral and Maxillofacial Surgery
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
#6
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/28493179/where-to-position-osteotomies-in-genioglossal-advancement-surgery-based-on-locations-of-the-mental-foramen-canine-lateral-incisor-central-incisor-and-genial-tubercle
#7
Joshua S Park, Christopher Lee, Jason M Rogers, Ho-Hyun Sun, Yuan F Liu, Jeffrey A Elo, Jared C Inman
PURPOSE: The study aimed to provide precise measurements of anterior mandibular structural anatomy and to explore potential osteotomies for genioglossal advancement. METHODS: Cone beam computed tomography was used to analyze 33 randomly selected patients undergoing surgery for obstructive sleep apnea (OSA) between 2014 and 2016 at an academic surgical hospital. The locations of relevant mandibular structures were measured and statistical modeling was performed. RESULTS: Mean horizontal distances from midline to the mental foramina and the roots of the canine, lateral incisor, and central incisor were 22...
May 11, 2017: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28483229/use-of-three-dimensional-cad-cam-assisted-virtual-surgical-simulation-and-planning-in-the-pediatric-craniofacial-population
#8
Rachel Gray, Alexander Gougoutas, Vinh Nguyen, Jesse Taylor, Nicholas Bastidas
OBJECTIVE: Virtual Surgical Planning (VSP) and computer-aided design/computer-aided manufacturing (CAD/CAM) have recently helped improve efficiency and accuracy in many different craniofacial surgeries. Research has mainly focused on the use in the adult population with the exception of the use for mandibular distractions and cranial vault remodeling in the pediatric population. This study aims to elucidate the role of VSP and CAD/CAM in complex pediatric craniofacial cases by exploring its use in the correction of midface hypoplasia, orbital dystopia, mandibular reconstruction, and posterior cranial vault expansion...
June 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28468173/double-anterior-segmental-osteotomy-under-local-anesthesia-for-correcting-adult-protrusion-with-thin-alveolus-and-ankylosed-tooth
#9
Byung-Joon Choi, Baek-Soo Lee, Hee-Jung Lee, Ki-Ho Park, Seong-Hun Kim
BACKGROUNDS: This paper describes an additional benefit in double anterior segmental osteotomy to correct severe anterior protrusion in adult patients with extremely thin mandibular alveolus and ankylosed tooth. For the optimal anterior segmental retraction, an ankylosed posterior tooth needed surgical inclination reposition. During anterior segmental osteotomy surgery under local anesthesia, additional single tooth osteotomy was performed without challenge. METHODS: For anterior segment retraction, osteotomy cuts were made by the surgeon to define a block of bone embedding 6 mandibular anterior teeth...
May 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28468161/novel-treatment-planning-of-hemimandibular-hyperplasia-by-the-use-of-three-dimensional-computer-aided-design-and-computer-aided-manufacturing-technologies
#10
Muhanad M Hatamleh, Elizabeth Yeung, Jonas Osher, Chrisopher Huppa
RATIONALE AND AIM: Hemimandibular hyperplasia is characterized by an obvious overgrowth in the size of the mandible on one side, which can extend up to the midline causing facial asymmetry. Surgical resection of the overgrowth depends heavily on the skill and experience of the surgeon. This report describes a novel methodology of applying three-dimensional computer-aided-design and computer-aided-manufacturing principles in improving the outcome of surgery in 2 mandibular hyperplasia patients...
May 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28462475/use-positional-screws-for-le-fort-i-osteotomy-fixation-technical-note
#11
Rafael Linard Avelar, Maykel Sullyvan Marinho de Souza, Eduardo Costa Studart Soares, Rodrygo Nunes Tavares
In recent years, several studies related to fixation systems have been published, but few suggest any variations of the Le Fort I osteotomy technique, and the use of plates and screws placed along the canine and zygomatic pillar are common. The 20-year-old patient with Crouzon syndrome presented with severe hypoplasia of the maxillary, mandibular prognathism, and class III facial pattern. The patient underwent orthognathic surgery and high Le Fort I osteotomy with the fixation of eight positional screws. The aim of this paper is to describe a different technique for the fixation in high maxillary osteotomies, which can be used in specific cases...
May 1, 2017: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28459123/segmental-sandwich-osteotomy-and-tunnel-technique-for-three-dimensional-reconstruction-of-the-jaw-atrophy-a-case-report
#12
Mario Santagata, Nicola Sgaramella, Ivo Ferrieri, Giovanni Corvo, Gianpaolo Tartaro, Salvatore D'Amato
BACKGROUND: A three-dimensionally favourable mandibular bone crest is desirable to be able to successfully implant placement to meet the aesthetic and functional criteria in the implant-prosthetic rehabilitation. Several surgical procedures have been advocated for bone augmentation of the atrophic mandible, and the sandwich osteotomy is one of these techniques. The aim of the present case report was to assess the suitability of segmental mandibular sandwich osteotomy combined with a tunnel technique of soft tissue...
December 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/28457824/surgical-correction-of-mandibular-hypoplasia-in-hemifacial-microsomia-a-retrospective-study-in-39-patients
#13
H Bertin, J Mercier, A Cohen, J Giordanetto, N Cohen, S H Lee, J P Perrin, P Corre
PURPOSE: Repair of the mandibular deformity in hemifacial microsomia (HFM) remains controversial, and there is scant information in the literature regarding the late outcomes. The aim of this study was to evaluate architectural and aesthetic long-term outcomes for primary mandibular surgery in patients with HFM. MATERIALS AND METHODS: Thirty-nine patients with types II and type III HFM were included in this retrospective study. Depending on the nature of the mandibular deformity, patients were treated using a costochondral graft (CCG) or a vertical ramus osteotomy (VRO)...
March 30, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28457588/mandibular-wing-osteotomy-technical-modification
#14
R Coopman, T Aerden, G De Temmerman, C Politis
No abstract text is available yet for this article.
April 27, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28456427/-how-to-make-your-own-custom-cutting-guides-for-both-mandibular-and-fibular-stair-step-osteotomies
#15
K Rem, R Bosc, H De Kermadec, B Hersant, J-P Meningaud
INTRODUCTION: Using tailored cutting guides for osteocutaneous free fibula flap in complex mandibular reconstruction after cancer resection surgery constitutes a substantial improvement. Autonomously conceiving and manufacturing the cutting guides within a plastic surgery department with computer-aided design (CAD) and three-dimensional (3D) printing allows planning more complex osteotomies, such as stair-step osteotomies, in order to achieve more stable internal fixations. METHODS: For the past three years, we have been producing by ourselves patient-tailored cutting guides using CAD and 3D printing...
April 26, 2017: Annales de Chirurgie Plastique et Esthétique
https://www.readbyqxmd.com/read/28442179/ipsilateral-sagittal-split-ramus-osteotomy-to-facilitate-reconstruction-of-the-temporomandibular-joint-after-resection-of-condylar-osteochondroma
#16
X Luo, X Ren, T Li, Y Li, B Ye, S Zhu
We report the outcomes of 12 patients with osteochondroma of the mandibular condyle who were treated by condylectomy with sagittal split ramus osteotomy (SSRO) between January 2011 and October 2015. Variables assessed before and after operation were imaging, appearance, maximum mouth opening, maximum mandibular protrusion, lateral excursion, and function of the temporomandibular joint (TMJ). Patients were followed up for a mean (range) of 21 (13 - 30) months. Outcomes were satisfactory with no complications or recurrence...
April 22, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28439173/surgical-correction-of-brodie-bite-in-adults-a-novel-surgical-splint
#17
P Ratna, B Srinivasan, R Devaki Vijayalakshmi, C Ravanth Kumar
INTRODUCTION: The incidence of telescopic bite is a rare occurrence. Brodie bite malocclusions manifest with severe skeletal and dental transverse, sagittal and vertical problems. MATERIALS AND METHODS: A patient presenting with a telescopic bite and mandibular retrognathism was treated by orthognathic approach. A unique surgical splint was used as an aid in performing the maxillary constriction and segmental osteotomy. CONCLUSION: The telescopic bite was corrected successfully and occlusal rehabilitation was achieved...
June 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28436308/the-different-effects-of-intraoral-vertical-ramus-osteotomy-ivro-and-sagittal-split-ramus-osteotomy-ssro-on-mandibular-border-movement
#18
Hiroki Komori, Noriaki Kawanabe, Tomoki Kataoka, Yui Kato, Atsuro Fujisawa, Takashi Yamashiro, Hiroshi Kamioka
OBJECTIVES: This study investigated the different effects of intraoral vertical ramus osteotomy (IVRO) and sagittal split ramus osteotomy (SSRO) on mandibular border movement. METHODS: The participants included 22 patients receiving IVRO and 22 patients receiving SSRO who were treated at Okayama University Hospital. Their mandibular border movement was evaluated in three dimensions with 6° of freedom using an optical recording system. RESULTS: A strong correlation between condylar and lower incisor movement was observed during maximum jaw protrusion and laterotrusion...
April 23, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28420488/mandibular-step-osteotomy-using-cad-cam-derived-surgical-splint-case-report
#19
J W Huh, Y B Lee, Y S Jung, H D Jung
Mandibular step osteotomy is a useful technique for large mandibular setbacks. We report a case of a patient who had a mandibular step osteotomy using a CAD/CAM-derived wafer for mandibular setback with reduction of the arch.
April 15, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28419843/a-review-of-in-office-dynamic-image-navigation-for-extraction-of-complex-mandibular-third-molars
#20
Robert W Emery, Oxana Korj, Ravi Agarwal
PURPOSE: We performed a retrospective review of in-office removal of complex mandibular third molars with a dynamic image navigation system (DINS). MATERIALS AND METHODS: A retrospective review was conducted of cases completed from 2010 to 2014 by a single oral and maxillofacial surgeon. The average age of the patients was 47 years (range, 27 to 72 years). Extraction complexity was classified with Juodzbalys and Daugela's classification system. The included study cases had complexity scores of 9 or greater...
March 25, 2017: Journal of Oral and Maxillofacial Surgery
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