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Mandibular distraction

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https://www.readbyqxmd.com/read/27876376/non-surgical-and-surgical-interventions-for-airway-obstruction-in-children-with-robin-sequence
#1
Manouk J S van Lieshout, Koen F M Joosten, Irene M J Mathijssen, Maarten J Koudstaal, Eppo B Wolvius, Marc P van der Schroeff
There is widespread lack of consensus regarding treatment of airway obstruction in children with Robin Sequence. This study aimed to systematically summarize outcomes of non-surgical and surgical options to treat airway obstruction in children with Robin Sequence. The authors searched the Medline, EMBASE and CENTRAL databases. Studies primarily on mandibular distraction were excluded. Study quality was appraised with the Methodological Index for Non-Randomized Studies (MINORS) score. Forty-eight studies were included, of which 45 studies had a retrospective non-comparative set up, two studies had a prospective design and one study was a clinical trial...
July 2, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27875515/reconstruction-of-congenital-mandibular-hypoplasia-with-microvascular-free-fibula-flaps-in-the-pediatric-population-a-paradigm-shift
#2
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/27875507/technical-variants-of-mandibular-median-distraction
#3
Sofiane Ghersallah, Namrata Anavekar, Joel Ferri
Distraction of the mandibular symphysis, initially described by Guerrero, is often indicated in instances of osseous deficiency in the anterior mandible with associated tooth-jaw discrepancy. The authors describe a technique, combined with orthodontic treatment, which offers a safe and reliable alternative to avulsions and coronoplasty. Three operative techniques are outlined in detail.
November 21, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27833343/distraction-osteogenesis-for-management-of-severe-osa-in-pierre-robin-sequence-an-approach-to-elude-tracheostomy-in-infants
#4
N K Sahoo, I D Roy, Shamsher Dalal, Amit Bhandari
BACKGROUND: Severe obstructive sleep apnoea (OSA) is a life threatening condition associated with Pierre Robin sequence (PRS) due to mandibular micrognathia and glossoptosis. Often these patients require tracheostomy at an early age which has high morbidity. Distraction osteogenesis (DO) is an accepted method of treatment for patients with hypoplastic mandible to achieve mandibular lengthening without need for a bone graft. It has also been used in respiratory distressed neonates and infants to avoid tracheostomy...
December 2016: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/27833342/hard-and-soft-tissue-changes-following-maxillary-distraction-osteogenesis-and-mandibular-setback-with-bilateral-sagittal-split-osteotomy
#5
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/27779806/role-of-parathyroid-hormone-in-regeneration-of-irradiated-bone-in-a-murine-model-of-mandibular-distraction-osteogenesis
#6
Stephen Y Kang, Sagar S Deshpande, Alexander R Zheutlin, Alexis Donneys, Jose J Rodriguez, Noah S Nelson, Peter A Felice, Douglas B Chepeha, Steven R Buchman
BACKGROUND: The purpose of this study was to measure the histologic and histomorphometric effects of parathyroid hormone (PTH) treatment on irradiated bone undergoing distraction osteogenesis (DO). METHODS: Thirty-four rats were divided into 3 groups. The control group underwent DO and the radiation control group underwent radiotherapy (RT) before DO. The PTH group underwent RT and received PTH during DO. Quantitative histology and histomorphometry were performed...
October 25, 2016: Head & Neck
https://www.readbyqxmd.com/read/27766028/targeting-p38-pathway-regulates-bony-formation-via-msc-recruitment-during-mandibular-distraction-osteogenesis-in-rats
#7
Zi-Hui Yang, Bao-Lei Wu, Chen Ye, Sen Jia, Xin-Jie Yang, Rui Hou, De-Lin Lei, Lei Wang
Distraction osteogenesis (DO) is a widely used self-tissue engineering. However, complications and discomfort due to the long treatment period are still the bottleneck of DO. Novel strategies to accelerate bone formation in DO are still needed. P38 is capable of regulating the osteogenic differentiation of both mesenchymal stem cells (MSCs) and osteoblasts, which are crucial to bone regeneration. However, it is not clear whether targeting p38 could regulate bony formation in DO. The purpose of the current work was to investigate the effects of local application of either p38 agonist anisomycin or p38 inhibitor SB203580 in a rat model of DO...
2016: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/27752211/early-mandibular-distraction-to-relieve-robin-severe-airway-obstruction-in-two-siblings-with-lymphedema-distichiasis-syndrome
#8
Paola Papoff, Marco Castori, Lucia Manganaro, Fabio Midulla, Corrado Moretti, Piero Cascone
Although micrognathia and cleft palate have been reported in patients with Lymphedema-distichiasis syndrome (LDS), the classic Robin sequence with glossoptosis and airway obstruction has not been previously described in patients with genetically confirmed LDS. Here we report on two female siblings with LDS confirmed by a FOXC2 mutation who presented at birth with severe airway obstruction related to Robin sequence. Respiratory obstruction was successfully managed by early distraction osteogenesis. Our report highlights the unusual occurrence of Robin sequence in LDS patients and advises distraction osteogenesis to resolve breathing problems in LDS patients who present with Robin related severe airway obstruction...
September 2016: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/27750176/computer-assisted-preoperative-simulation-for-positioning-and-fixation-of-plate-in-2-stage-procedure-combining-maxillary-advancement-by-distraction-technique-and-mandibular-setback-surgery
#9
Hideyuki Suenaga, Asako Taniguchi, Kazumichi Yonenaga, Kazuto Hoshi, Tsuyoshi Takato
INTRODUCTION: Computer-assisted preoperative simulation surgery is employed to plan and interact with the 3D images during the orthognathic procedure. It is useful for positioning and fixation of maxilla by a plate. We report a case of maxillary retrusion by a bilateral cleft lip and palate, in which a 2-stage orthognathic procedure (maxillary advancement by distraction technique and mandibular setback surgery) was performed following a computer-assisted preoperative simulation planning to achieve the positioning and fixation of the plate...
October 4, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27727105/ckip-1-silencing-promotes-new-bone-formation-in-rat-mandibular-distraction-osteogenesis
#10
Zi-Chao Zhou, Lei Che, Liang Kong, De-Lin Lei, Rui Liu, Xin-Jie Yang
OBJECTIVE: This study investigated the effects and possible molecular mechanism of casein kinase-2 interacting protein-1 (CKIP-1) silencing on bone regeneration during rat mandibular distraction osteogenesis (DO). STUDY DESIGN: CKIP-1 silencing by chitosan/si-CKIP-1 was employed and analyzed both in rat mandibular DO models in vivo and in cultured rat mandible bone marrow stromal cells (BMSCs) in vitro. RESULTS: Gross observation, micro-computed tomography analysis, and hematoxylin and eosin (H&E) staining revealed that new bone formation in the distraction gap of the chitosan/si-CKIP-treated group was better compared with the chitosan/si-NC and phosphate buffered saline-treated groups in both quantity and quality...
July 30, 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/27718360/does-mandibular-distraction-vector-influence-airway-volumes-and-outcome
#11
Elizabeth G Zellner, Julie M Mhlaba, Russell R Reid, Derek Steinbacher
PURPOSE: The goal of mandibular distraction in the Pierre-Robin sequence is to maximally expand the oropharyngeal airway. It has been hypothesized that a steep oblique distraction vector might allow greater airway enlargement compared with horizontal distraction. This study compared vector orientation in relation to airway volume and overall clinical outcome. MATERIALS AND METHODS: Micrognathic infants who underwent mandibular distraction with sufficient computed tomographic data were retrospectively reviewed...
September 13, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27650061/norepinephrine-inhibits-mesenchymal-stem-cell-chemotaxis-migration-by-increasing-stromal-cell-derived-factor-1-secretion-by-vascular-endothelial-cells-via-ne-abrd3-jnk-pathway
#12
Baolei Wu, Lei Wang, Xi Yang, Ming Mao, Chen Ye, Peng Liu, Zihui Yang, Xinjie Yang, Delin Lei, Chenping Zhang
Mesenchymal stem cells (MSCs), which are physiologically maintained in vascular endothelial cell (VEC)-based niches, play a critical role in tissue regeneration. Our previous studies demonstrated that sympathetic denervation could promote MSC mobilization, thereby enhancing bone formation in distraction osteogenesis (DO), a self-tissue engineering for craniofacial and orthopeadic surgeries. However, the mechanisms on how sympathetic neurotransmitter norepinephrine (NE) regulates MSC migration are not well understood...
September 17, 2016: Experimental Cell Research
https://www.readbyqxmd.com/read/27649059/health-related-quality-of-life-in-children-with-robin-sequence
#13
Hanneke Basart, Hedy A van Oers, Emma C Paes, Corstiaan C Breugem, J Peter W Don Griot, Chantal M A M van der Horst, Lotte Haverman, Raoul C Hennekam
This patient-reported outcome (PRO) study reports on 102 children with Robin sequence (RS) and their parents. There has been differentiated between those with isolated RS and those with RS as part of a syndrome, and take various treatments into account. All RS families from an earlier described cohort were invited to participate. Parents and RS children completed online questionnaires regarding health-related quality of life (HRQoL), satisfaction with appearance, parental distress, and RS specific topics. Results were compared with the Dutch norm population if available...
September 20, 2016: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/27619032/sleep-architecture-in-pierre-robin-sequence-the-effect-of-mandibular-distraction-osteogenesis
#14
J N Bangiyev, H Traboulsi, I Abdulhamid, A Rozzelle, P J Thottam
INTRODUCTION: Pierre-Robin Sequence (PRS), a triad of micro/retrognathia, glossoptosis, and upper airway obstruction, usually in conjunction with a cleft palate is frequently associated with significant morbidity. Mandibular distraction osteogenesis (MDO) is an effective treatment modality to address retroglossal upper airway obstruction by increasing the anterior-posterior diameter of the infant airway. Although MDO has been shown to improve the apnea-hypopnea index (AHI) in children with PRS, the consequences of MDO on other aspects of infant sleep, including hypercapnea, hypoxia, the REM to Non-REM ratio, as well as its effect on central and mixed apneas has not been investigated with an adequate sample size...
October 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27617809/efficacy-of-standard-costochondral-grafting-in-patients-with-bilateral-craniofacial-microsomia
#15
Arman T Serebrakian, Michael S Golinko, Michael Alperovich, Christopher M Runyan, David A Staffenberg
Craniofacial microsomia remains the second most common craniofacial deformity after cleft lip and palate. Mandibular pathology has been classically scored from type I to type III by the modified Pruzansky-Kaban classification. The authors report a case of a 5-year-old patient with Goldenhar syndrome and bilateral type III craniofacial macrosomia. The patient had absence of bilateral glenoid fossas, condyles, coronoids, and rami as well as hypoplasia of the symphysis, parasymphysis, and mandibular body. Reconstruction was performed using 2 costochondral rib autografts to reconstruct a ramus and assist in the development of a neo-glenoid fossa at the cranial base...
October 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27614544/long-term-6-5-years-follow-up-of-mandibular-midline-distraction
#16
J P de Gijt, A Gül, H Sutedja, E B Wolvius, K G H van der Wal, M J Koudstaal
To assess the long-term stability and biomechanical effects of mandibular midline distraction (MMD), a prospective observational study was conducted with a retrospective cohort. Included were 17 MMD patients, of whom 9 completed the long-term follow-up with a mean of 6.5 years. In all patients, a bone-borne distractor was used. Dental casts and postero-anterior (PA) cephalograms were taken at fixed time points: pre-operative (T1), directly post-distraction (T2), 1-year post-operative (T3) and long-term follow-up (T4)...
July 14, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27609710/mandibular-distraction-osteogenesis-a-systematic-review-of-stability-and-the-effects-on-hard-and-soft-tissues
#17
G Rossini, B Vinci, R Rizzo, T M DaC Pinho, A Deregibus
Mandibular distraction osteogenesis (MDO) has been widely adopted in modern maxillofacial surgery due to its less invasive approach and the consistent aesthetic and functional improvements obtained. The aim of the present systematic review was to analyze the available evidence on the skeletal and soft tissue effects of MDO. The medical literature was searched to identify all peer-reviewed papers meeting the selection criteria for the final review process. A three-point grading system was used to rate the methodological quality of the selected papers...
November 2016: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27607116/new-technique-for-mandibular-symphyseal-distraction-by-a-double-level-anchorage-and-fixation-system-advantages-and-results
#18
Franco Carlino, Giuseppe Pantaleo, Fabio Ciuffolo, Pier Paolo Claudio, Antonio Cortese
INTRODUCTION: A surgical technique to widen the mandible is the mandibular midline distraction: the most common indications for mandibular midline distraction are severe mandibular anterior crowding, severe mandibular transverse deficiency, uni- or bilateral crossbite, impacted anterior teeth with inadequate space, and tipped teeth. Commonly used distraction devices can be divided into 2 systems: bone-borne distraction system appliance, dental-borne distraction systems. Each system has peculiar advantages, disadvantages, and different indications...
September 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27603361/distraction-osteogenesis-as-a-treatment-of-obstructive-sleep-apnea-syndrome-a-systematic-review
#19
Wai Kin Tsui, Yanqi Yang, Lim Kwong Cheung, Yiu Yan Leung
BACKGROUND: To conduct a systematic review to answer the clinical question "What are the effectiveness of mandibular distraction osteogenesis (MDO) and its complications to treat patients with obstructive sleep apnea syndrome (OSAS)?". METHODS: A systematic search including a computer search with specific keywords, reference list search, and manual search were done. Relevant articles on MDO were assessed and selected in 3 rounds for final review based on 5 predefined inclusion criteria and followed by a round of critical appraisal...
September 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27564073/changes-in-soft-tissue-measurements-after-mandibular-distraction-osteogenesis
#20
Akmam H Al-Mahdi, Sarah N Al-Hasnawi, Hassanien A Al-Jumaily
BACKGROUND: Mandibular distraction osteogenesis is the process of generating new bone in a gap between 2 bone segments in response to the application of graduated tensile stress across the bone gap. These distraction forces applied to bone also create tension in the surrounding soft tissues resulting in simultaneous expansion of the functional soft tissue matrix. AIM: To investigate and evaluate the changes in facial soft tissue following mandibular distraction osteogenesis and their relationship with the changes in bone movements...
October 2016: Journal of Craniofacial Surgery
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