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Mandibular osteotomy

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https://www.readbyqxmd.com/read/27931722/mandibular-stability-using-sliding-or-conventional-four-hole-plates-for-fixation-after-bilateral-sagittal-split-ramus-osteotomy-for-mandibular-setback
#1
H G Lee, K J Agpoon, A N Besana, H K Lim, H S Jang, E S Lee
Our aim was to compare the postoperative stability of the mandible when two different fixation methods had been used after bilateral sagittal split ramus osteotomy (BSSRO) for mandibular setback. The study included 23 patients who had two-jaw BSSRO mandibular setback at the Department of Oromaxillofacial Surgery, Korea University Guro Hospital, between January 2011 and June 2014. The first group (four-hole (control) group, n=13) comprised patients whose bony segments were fixed with conventional four-hole plates, and the second (sliding plate (experimental) group, n=10) included patients whose bone segments were fixed with sliding plates...
December 5, 2016: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/27923112/the-double-mandibular-osteotomy-for-vascular-and-tumor-surgery-of-the-parapharyngeal-space
#2
Thomas Schlieve, Eric R Carlson, Michael Freeman, Ryan Buckley, Josh Arnold
PURPOSE: The purposes of this study are to describe our experience using a double mandibular osteotomy for access to the parapharyngeal space in vascular and tumor surgery and to report on the outcomes and complications of this procedure. PATIENTS AND METHODS: We designed and implemented a case series to review the medical records of all patients treated with a double mandibular osteotomy for parapharyngeal space access from 1994 to 2016. Patient demographic characteristics, indications for the procedure, outcomes, and complications were recorded...
November 15, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27919597/axiographic-results-of-cad-cam-assisted-microvascular-fibular-free-flap-reconstruction-of-the-mandible-a-prospective-study-of-21-consecutive-cases
#3
Lucas M Ritschl, Thomas Mücke, Andreas M Fichter, Maximilian Roth, Clemens Kaltenhauser, Jean Marc Pho Duc, Marco R Kesting, Klaus-Dietrich Wolff, Denys J Loeffelbein
Virtual planning and guided reconstruction of the mandible following ablative surgery have become standard procedures in reconstructive surgery. Many advantages regarding operation time, morphology, bony fit, and consolidation have been described, but analyses of the functional outcome of virtually planned mandibular reconstructions are lacking. We prospectively analyzed 21 consecutive cases of mandibular reconstructions using CAD/CAM-assisted microvascular, fibular free flaps in operations between July 2014 and January 2016 at a single center...
November 12, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27896214/a-case-of-severe-mandibular-retrognathism-with-bilateral-condylar-deformities-treated-with-le-fort-i-osteotomy-and-two-advancement-genioplasty-procedures
#4
Masahiro Nakamura, Takeshi Yanagita, Tatsushi Matsumura, Takashi Yamashiro, Seiji Iida, Hiroshi Kamioka
We report a case involving a young female patient with severe mandibular retrognathism accompanied by mandibular condylar deformity that was effectively treated with Le Fort I osteotomy and two genioplasty procedures. At 9 years and 9 months of age, she was diagnosed with Angle Class III malocclusion, a skeletal Class II jaw relationship, an anterior crossbite, congenital absence of some teeth, and a left-sided cleft lip and palate. Although the anterior crossbite and narrow maxillary arch were corrected by interceptive orthodontic treatment, severe mandibular hypogrowth resulted in unexpectedly severe mandibular retrognathism after growth completion...
November 2016: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/27896211/comparison-of-postoperative-changes-in-the-distal-and-proximal-segments-between-conventional-and-sliding-mini-plate-fixation-following-mandibular-setback
#5
Seong-Sik Kim, Kyoung-Ho Kwak, Ching-Chang Ko, Soo-Byung Park, Woo-Sung Son, Yong-Il Kim
OBJECTIVE: The purpose of the present study was to evaluate the postoperative three-dimensional (3D) changes in the proximal segments after mandibular setback sagittal split ramus osteotomy and to compare the changes between the conventional mini-plate fixation and semi-rigid sliding plate fixation. METHODS: Cone-beam computed tomography (CBCT) images were used to evaluate the postoperative 3D changes in the proximal segments during the healing process. CBCT images were superimposed using the symphysis and the lower anterior mandible as references...
November 2016: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/27890226/tissue-engineering-for-vertical-ridge-reconstruction
#6
REVIEW
Neel Patel, Beomjune Kim, Waleed Zaid, Daniel Spagnoli
This article provides an overview of basic tissue engineering principles as they are applied to vertical ridge defects and reconstructive techniques for these types of deficiencies. Presented are multiple clinical cases ranging from office-based dentoalveolar procedures to the more complex reconstruction of postresection mandibular defects. Several different types of regenerative tissue constructs are presented; either used alone or in combination with traditional reconstructive techniques and procedures, such as maxillary sinus augmentation, Le Fort I osteotomy, and microvascular free tissue transfer...
February 2017: Oral and Maxillofacial Surgery Clinics of North America
https://www.readbyqxmd.com/read/27875515/reconstruction-of-congenital-mandibular-hypoplasia-with-microvascular-free-fibula-flaps-in-the-pediatric-population-a-paradigm-shift
#7
Emily C Cleveland, Jamie Zampell, Tomer Avraham, Z-Hye Lee, David Hirsch, Jamie P Levine
BACKGROUND: The microvascular free fibula flap has become the gold standard for reconstruction of complex mandibular defects since its description by Hidalgo in 1989. Prior studies have demonstrated its safety and efficacy in the pediatric population. However, this reconstructive method is often used only as a last resort for correction of congenital mandibular hypoplasia, after failure of bone grafting and distraction osteogenesis. The authors describe our experience using this technique, facilitated by virtual planning and prefabricated cutting jigs, for children with severe congenital mandibular hypoplasia...
November 21, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27875512/single-tooth-osteotomy-combined-wide-linear-corticotomy-under-local-anesthesia-for-correcting-anterior-protrusion-with-ectopically-erupted-canine
#8
Nur Serife Iskenderoglu, Byung-Joon Choi, Kyung Won Seo, Yeon-Ji Lee, Baek-Soo Lee, Seong-Hun Kim
BACKGROUNDS: This article presents the alternative surgical treatments of both anterior protrusion by carrying out retraction on mandibular anterior fragment, meanwhile applying retraction force on maxilla anterior teeth and ectopically erupted canine with using platelet-rich fibrin (PRF). METHODS: Anterior segmental osteotomy was combined with linear corticotomy under local anesthesia. The correction of right ectopic canine was achieved through 2 stages. First, dento-osseous osteotomy on palatal side was performed...
November 21, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27858077/-cone-beam-computed-tomography-evaluation-of-short-and-long-term-airway-changes-in-patients-with-skeletal-class-%C3%A2-malocclusion-treated-by-orthodontic-therapy-and-bimaxillary-surgery-with-or-without-mandibular-setback-surgery
#9
Hong-Wei Wang, Li-Yan Li, Su-Qing Qi, Ming Yan
PURPOSE: To evaluate the short-term and long-term effects of pharyngeal airway in skeletal Class Ⅲ malocclusion patients who underwent bimaxillary surgery or isolated mandibular setback-orthodontic treatment. METHODS: The sample included 54 patients (28 males, 26 females) who were diagnosed with skeletal Class Ⅲ malocclusion. Patents in group A (n=28) underwent mandibular setback surgery and orthodontic treatment. Cone-beam CT (CBCT) was taken at one week before treatment (T0), 6 months (T1) and 3 years after surgery (T2)...
August 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/27833342/hard-and-soft-tissue-changes-following-maxillary-distraction-osteogenesis-and-mandibular-setback-with-bilateral-sagittal-split-osteotomy
#10
Shilpa S Bawane, Neelam N Andrade
AIMS OF THIS STUDY: (1) To highlight the role of intraoral submerged device in distraction osteogenesis (DO) of patients requiring two jaw surgeries for the correction of severe developmental maxillary hypoplasia (MH) and mandibular prognathism (MP) (2) To analyse the hard and soft tissue changes following maxillary DO and mandibular setback with bilateral sagittal split osteotomy (BSSO) in patients with severe MH and MP requiring two jaw surgeries. MATERIALS AND METHODS: During the period Jan 2004 to Dec 2006, five patients with severe developmental MH along with MP were treated...
December 2016: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/27833341/minimizing-relapse-in-mandibular-asymmetry-correction-by-bssro-with-intentional-osteotomy-of-distal-segment-a-prospective-study
#11
R Vimalraj, N Jayakumar, K George Varghese, S Mohan, Bobby John, Somil Chhag
INTRODUCTION: Surgical correction of the patients with mandibular asymmetry by bilateral sagittal split ramus osteotomy (BSSRO) creats remarkable results in the immediate post operative period, but it carries a high risk of relapse by powerful muscle forces and the osteotomized segments. To minimize this risk, literatures highlight the procedure of an intentional osteotomy and stripping of muscles. A prospective study was conducted in Government Dental College, Kottayam, Kerala, to assess the effect of intentional osteotomy of posterior part of distal segment and stripping of medial pterygoid muscle on the proximal segment on affected side in mandibular asymmetry patients treated with BSSRO...
December 2016: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/27832920/piezoelectric-compared-with-conventional-rotary-osteotomy-for-the-prevention-of-postoperative-sequelae-and-complications-after-surgical-extraction-of-mandibular-third-molars-a-systematic-review-and-meta-analysis
#12
REVIEW
E K Badenoch-Jones, M David, T Lincoln
The purpose of this review was to determine if postoperative sequelae (facial swelling, trismus, pain) and neurological complications are reduced when mandibular third molars are surgically extracted using a piezoelectric device for osteotomy compared with conventional rotary burs, and to determine if there is a difference in operating time between the two techniques. Clinical trials were identified through a search (April 2015) on the PubMed, EMBASE, Cochrane Central Register of Controlled Trials (CENTRAL) and Google Scholar databases...
November 7, 2016: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/27832719/changes-in-posterior-airway-space-and-hyoid-bone-position-after-surgical-mandibular-advancement
#13
Anni Riepponen, Riitta Myllykangas, Jarno Savolainen, Pauli Kilpeläinen, Jari Kellokoski, Riitta Pahkala
OBJECTIVE: To evaluate cephalometric changes in posterior airway space (PAS) and in hyoid bone distance to mandibular plane (MP) 1-3 years after bilateral sagittal split osteotomy (BSSO). MATERIAL AND METHODS: The sample consisted of 36 females and 16 males who underwent mandibular advancement by BSSO. To observe sagittal changes in PAS and in hyoid bone distance to MP both pre- and postoperative cephalograms were analyzed using WinCeph(®) 8.0 software. For the statistical analyses paired T-test and multivariate logistic regression models were used...
November 10, 2016: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/27810549/technical-modifications-for-intraoral-quadrangular-le-fort-ii-osteotomy
#14
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/27796598/soft-tissue-changes-after-a-mandibular-osteotomy-for-symmetric-skeletal-class-iii-malocclusion
#15
Seigo Ohba, Haruka Kohara, Takamitsu Koga, Takako Kawasaki, Kei-Ichirou Miura, Noriaki Yoshida, Izumi Asahina
The soft tissue profile is crucial to esthetics after orthognathic surgery. The aim of this study was to assess the soft tissue changes of the subnasal and submental regions more than 1 year after a sagittal split ramus osteotomy (SSRO) in patients with skeletal class III malocclusion. A total of 22 patients with mandibular prognathism were included in this study. Patients had lateral cephalograms before and more than 1 year after they underwent an isolated SSRO. Soft and hard tissue changes were assessed using the lateral cephalograms...
October 31, 2016: Odontology
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
#16
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/27774457/relationship-between-frontal-gap-and-postoperative-stability-in-the-treatment-of-mandibular-prognathism
#17
Yu-Chuan Tseng, Kun-Jung Hsu, Ker-Kong Chen, Ju-Hui Wu, Chun-Ming Chen
Objectives. To investigate the correlation between frontal gaps and skeletal stability after intraoral vertical ramus osteotomy (IVRO) for correction of mandibular prognathism. Materials and Methods. Thirty-three patients with frontal gaps after IVRO-based mandibular prognathism correction were included. Three lateral and frontal cephalometric radiographs were obtained: preoperatively (T1), immediately postoperatively (T2), and 2 years postoperatively (T3). Two linear measurements (menton [Me] and frontal gap) were compared from T1 to T3 (T21: immediate surgical changes; T32: postoperative stability; T31: 2-year surgical change)...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27774441/changes-of-lip-morphology-following-mandibular-setback-surgery-using-3d-cone-beam-computed-tomography-images
#18
Seung Jae Paek, Ji Yong Yoo, Jang Won Lee, Won-Jong Park, Young Deok Chee, Moon Gi Choi, Eun Joo Choi, Kyung-Hwan Kwon
BACKGROUND: The aims of this study are to evaluate the lip morphology and change of lip commissure after mandibular setback surgery (MSS) for class III patients and analyze association between the amount of mandibular setback and change of lip morphology. METHODS: The samples consisted of 14 class III patients treated with MSS using bilateral sagittal split ramus osteotomy. Lateral cephalogram and cone-beam CT were taken before and about 6 months after MSS. Changes in landmarks and variables were measured with 3D software program Ondemand™...
December 2016: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27755422/the-effect-of-local-rosuvastatin-on-mandibular-fracture-healing
#19
Akif Türer, Mustafa Cenk Durmuşlar, Ismail Şener, Ahmet Ferhat Misir, Mehmet Emin Önger
Mandibular fracture is the most common injury seen in facial fractures and plays an important role for oral and maxillofacial surgery department. The purpose of this study is to investigate the potential of the local administration of rosuvastatin (RSV) on mandibular fracture healing in rats. Thirty-two rats were divided into 4 groups: group C-14 (control), group R-14, group C-28 (control), and group R-28. A unilateral standard vertical osteotomy was performed right side of the mandibula extending from the tooth to the mandibular basis for each animal...
October 14, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27746257/surgical-site-infections-following-bimaxillary-orthognathic-osseous-genioplasty-and-intranasal-surgery-a%C3%A2-retrospective-cohort-study
#20
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
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