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Mandibular distraction

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https://www.readbyqxmd.com/read/29627422/predictors-of-failure-in-infant-mandibular-distraction-osteogenesis
#1
Jeffrey A Hammoudeh, Artur Fahradyan, Colin Brady, Michaela Tsuha, Beina Azadgoli, Sally Ward, Mark M Urata
PURPOSE: Mandibular distraction osteogenesis (MDO) has been shown to be successful in treating upper airway obstruction caused by micrognathia in pediatric patients. The purpose of this study was to assess the success rate of MDO and possible predictors of failure. PATIENTS AND METHODS: The records of all neonates and infants who underwent MDO from 2008 to 2015 were retrospectively reviewed. Procedural failure was defined as patient death or the need for tracheostomy postoperatively...
March 15, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29590711/position-of-mandibular-condyles-during-stabilization-splint-wearing
#2
Anja Profozić, Antonia Plazibat, Antonia Polašek, Manuela Pliško, Samir Čimić
The purpose of this study was to determine the position of mandibular condyles during wearing of stabilization splints with different thickness. Two stabilization splints were made for 10 completely dentate participants. First splint was made with minimal 1 mm distance at molar area between the upper and lower teeth, while the second splint was made 3 mm higher than the first splint. Condylar position measurements during splint wearing were done using ultrasound jaw tracking device with six degrees of freedom at the antero-posterior (x), vertical (y) and lateral (z) axes...
December 2017: Acta Clinica Croatica
https://www.readbyqxmd.com/read/29564221/orthodontic-and-orthopedic-treatment-for-a-growing-patient-with-tessier-number-0-cleft
#3
Seung-Hak Baek, Yoon-Hee Park, Jee Hyeok Chung, Sukwha Kim, Jin-Young Choi
The purpose of this case report was to introduce the concept of orthodontic and orthopedic treatment for a growing patient with Tessier number 0 cleft. A 5-year-old boy patient with Tessier number 0 cleft presented congenitally missing maxillary central incisors (MXCI), a bony defect at the premaxilla, a constricted maxillary arch, an anterior openbite, and maxillary hypoplasia. His treatment was divided into three stages: management of the bony defect at the premaxilla and the congenitally missing MXCIs using a fan-type expansion plate, iliac bone grafting, and eruption guidance of the maxillary lateral incisors into the graft area for substitution of MXCIs; management of the maxillary hypoplasia using sequential facemask therapy with conventional and skeletal anchorage; and management of the remaining occlusal problems using fixed orthodontic treatment...
March 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/29557389/relationship-of-distraction-rate-with-inferior-alveolar-nerve-degeneration-regeneration-shift
#4
Ying-Hua Zhao, Shi-Jian Zhang, Zi-Hui Yang, Xiao-Chang Liu, De-Lin Lei, Jing Li, Lei Wang
Distraction osteogenesis is an important technique for the treatment of maxillofacial abnormities and defects. However, distraction osteogenesis may cause the injury of the inferior alveolar nerve. The relationship between distraction rate and nerve degeneration-regeneration shift remains poorly understood. In this study, 24 rabbits were randomly divided into four groups. To establish the rabbit mandibular distraction osteogenesis model, the mandibles of rabbits in distraction osteogenesis groups were subjected to continuous osteogenesis distraction at a rate of 1...
February 2018: Neural Regeneration Research
https://www.readbyqxmd.com/read/29554066/an-algorithm-for-airway-management-in-patients-with-pierre-robin-sequence
#5
Katherine E Hicks, Kathleen R Billings, Chad A Purnell, John M Carter, Bharat Bhushan, Arun K Gosain, Dana M Thompson, Jeffrey C Rastatter
PURPOSE: Airway management in neonates with Pierre Robin sequence (PRS) can be challenging. The goal was to describe the algorithm developed by the authors over the past 8 years. METHODS: A retrospective case series analyzing airway management in neonates with PRS admitted to the neonatal intensive care unit at a tertiary care pediatric hospital was performed. The utility of the proposed algorithm for airway management incorporating more consistent use of polysomnography (PSG), and airway assessment was assessed...
March 16, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29554059/a-quantitative-analysis-of-weight-gain-following-mandibular-distraction-osteogenesis-in-robin-sequence
#6
Cyril S Gary, Sharon Marczewski, Patricia M Vitagliano, Rajendra Sawh-Martinez, Robin Wu, Derek M Steinbacher
Mandibular distraction osteogenesis (MDO) is an effective treatment modality for children suffering from upper airway obstruction from Robin Sequence (RS). Mandibular distraction osteogenesis has been shown to have positive effects on oral feeding and for relieving respiratory obstruction, but its effects on postoperative weight gain are poorly understood. This study quantitatively analyzes weight gain following MDO. A retrospective chart review identified 22 RS children who underwent MDO. Patient weight data, feeding methods pre- and postoperatively, and polysomnography data pre- and postoperatively were collected...
March 16, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29521769/determining-the-patient-specific-optimum-osteotomy-line-for-severe-mandibular-retrognathia-patients
#7
Abdullah Tahir Şensoy, Irfan Kaymaz, Ümit Ertaş, Ali Kiki
PURPOSE: The purpose of this study is to suggest a patient-specific osteotomy line to optimize the distractor position and thus to minimize the disadvantages of conventional mandibular distraction osteogenesis (MDO) protocols. In addition, this study also aims to compare the conventional MDO protocols with the new MDO protocol proposed in this study in terms of both orthodontic outcomes and mechanical effects of osteotomy level on callus stabilization by means of the finite element method...
March 8, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29509170/temporomandibular-joint-ankylosis-algorithm-of-treatment
#8
Rodrigo Fariña, Loreto Canto, Renato Gunckel, Juan Pablo Alister, Francisca Uribe
: Temporomandibular joint ankylosis, according to age of onset, causes severe functional and morphological disorders, as well as stunted craniofacial growth and development.The primary goal of treatment is to resolve the functional and morphological disorders. METHOD: Pre- and posttreatment clinical and cephalometric registries were conducted in 15 patients with temporomandibular joint ankylosis over a 10-year period (2002-2012). All the patients underwent complete removal of the ankylotic block, gap arthroplasty, and ipsilateral coronoidectomy...
March 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29436942/short-vs-longer-implants-in-mandibular-alveolar-ridge-augmentated-using-osteogenic-distraction-one-year-follow-up-of-a-randomized-split-mouth-trial
#9
Sara Bernardi, Roberto Gatto, Marco Severino, Gianluca Botticelli, Silvia Caruso, Claudio Rastelli, Ettore Lupi, Adolfo Quiroz Rojas, Enzo Iacomino, Giovanni Falisi
Aim of the study was to evaluate the reliability of 6 mm long implants compared to normal length implants placed in vertical augmented atrophic posterior mandible, supporting cemented single crowns. Thirty-six patients with bilateral posterior edentulous mandible and presented a bone availability height less than 9 mm from the mandibular canal were enrolled for the participation to this study. Patient hemi-arches were randomized to receive both 6 mm-long and normal length implants (10 mm). The technique used for the vertical bone augmentation was the "sandwich" technique, using a bone substitute block as graft...
February 13, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29431348/new-technique-for-large-mandibular-and-surrounding-soft-tissue-reconstruction-that-uses-an-intraoral-three-dimensional-distractor-for-one-step-transport-disc-distraction-osteogenesis
#10
Antonio Cortese, Mario Caggiano, Giuseppe Pantaleo, Massimo Amato, Pier P Claudio
BACKGROUND: Mandibular reconstruction after ablative surgery is challenging not only for the amount of bone tissue needed following bone loss after benign or malignant tumor surgical removal, but mainly to reconstruct bone shape and structure necessary for subsequent implant insertion to preserve the function (speech, swallowing and chewing) and aesthetic of the lower face. Several different techniques for maxillary bone defects reconstruction have been described. The aim of our work is to describe a new technique for mandibular reconstruction that uses an intramural distractor, which is placed in one surgical step and without the need for a skin incision...
February 9, 2018: Minerva Stomatologica
https://www.readbyqxmd.com/read/29425758/long-term-effects-of-distraction-osteogenesis-of-the-mandible
#11
Zachary S Peacock, Alfonso Salcines, Maria J Troulis, Leonard B Kaban
PURPOSE: 1) To assess the fate of the permanent teeth in and adjacent to the regenerate in pediatric patients who underwent mandibular distraction osteogenesis (DO) and 2) to compare the postoperative growth of the distracted mandible with age- and gender-matched controls. PATIENTS AND METHODS: This was a retrospective cohort study of children who underwent mandibular DO during the primary or mixed dentition period and before completion of somatic growth (boys aged ≤14 years and girls aged ≤12 years) at Massachusetts General Hospital from 1996 to 2014...
January 31, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29425753/effects-of-rhbmp-2-7-heterodimer-and-rada16-hydrogel-scaffold-on-bone-formation-during-rabbit-mandibular-distraction
#12
Ling-Fei Ren, Geng-Sheng Shi, Yong-Qing Tong, Song-Yao Jiang, Feng Zhang
PURPOSE: The effects of a recombinant human bone morphogenetic protein-2/7 (rhBMP-2/7) heterodimer and a RADA16 (Ac-RADARADARADARADA-CONH2) hydrogel scaffold on bone formation during distraction osteogenesis were evaluated. MATERIALS AND METHODS: Forty New Zealand white rabbits, which underwent mandibular lengthening, were randomly divided into 5 groups. One group served as the control group. The others received 2 μg of rhBMP-2 homodimer, 2 μg of rhBMP-2/7 heterodimer, 100 μL of RADA16, or 100 μL of RADA16 plus 2 μg of rhBMP-2/7 heterodimer in the mandibular distraction gap at the beginning of distraction...
January 31, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29381611/decannulation-and-airway-outcomes-with-maxillomandibular-distraction-in-treacher-collins-and-nager-syndrome
#13
Nataliya I Biskup, Brian S Pan, Haithem Elhadi-Babiker, Ronald R Hathaway, John van Aalst, Christopher B Gordon
BACKGROUND: Treacher Collins syndrome is a rare disorder (1/50,000 live births) with features that include hypoplastic orbitozygomatic complex with downward slanting eyes, and maxillary/mandibular retrusion. Obstructive sleep apnea and tracheostomy-dependence are common. This study presents the outcomes of skeletal distraction on avoidance of tracheostomy and decannulation in this patient population. METHODS: The authors reviewed charts of all patients with Treacher Collins syndrome who underwent craniofacial reconstruction from 2003 to 2016...
January 29, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29314144/bone-augmentation-followed-by-implant-surgery-in-the-edentulous-mandible-a-systematic-review
#14
REVIEW
R J de Groot, M A E M Oomens, T Forouzanfar, E A J M Schulten
Long-standing loss of natural teeth in the mandible can lead to severe jaw atrophy and even mandibular fracture. There is no consensus on the best pre-prosthetic surgical treatment to reconstruct the atrophic edentulous mandible. The purpose of this review was to provide an overview of the existing literature and to give an evidence-based recommendation for bone grafting and future research. This systematic review was conducted according to the PRISMA statement. A literature search was performed in online databases Pubmed and Cochrane library for articles published between January 1980 and September 2017...
April 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29303852/interpositional-arthroplasty-by-temporalis-fascia-flap-and-galea-aponeurotica-combined-with-distraction-osteogenesis-a-modified-method-in-treatment-of-adult-patients-with-temporomandibular-joint-ankylosis-and-mandibular-dysplasia
#15
Jia Qiao, Bing Yu, Lai Gui, Xi Fu, Chung-Kwan Yen, Feng Niu, Huijun Zhang, Cai Wang, Ying Chen, Meng Wang, Jianfeng Liu
BACKGROUND: Interpositional arthroplasty (IPA) with temporalis fascia flap has been one of the most frequently performed procedures to treat temporomandibular joint (TMJ) ankylosis. However, recurrence often occurs when the flap lacks bulk or atrophies. Whether to perform IPA or distraction osteogenesis (DO) first has long been a controversial issue when patients presented mandibular dysplasia (MD). This study provided IPA a new graft material sufficient to prevent recurrence, combined the modified protocol of performing DO 6 months after IPA, and evaluated its efficacy in treating TMJ ankylosis patients with MD...
March 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29215444/mandibular-reconstruction-by-osteogenic-distraction-due-to-two-different-injuries
#16
Guilherme Dos Santos Trento, José Maurício Dos Santos Nunes Reis, Eduardo Hochuli-Vieira, Valfrido Antônio Pereira-Filho
Varied factors, whether intrinsic or extrinsic, may lead to a decrease in the bone volume of the jaws. Trauma and pathology can be listed as examples of such factors. The aim of this study is to present the osteogenic distraction technique as alternative to augmentation of low mandibular bone volume caused by different etiologies. The first case reports a mandibular marginal resection of ameloblastoma and the second one reports a male patient presenting mandibular fracture sequelae. Both cases were treated according to the osteogenic distraction technique...
March 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29194258/management-of-nonsyndromic-skeletal-dysgnathia-by-distraction-osteogenesis-long-term-follow-up
#17
Gagan Deep Kochar, Ashish Chakranarayan, Bensy Varghese, Sanjay Manohar Londhe, Sanjay Kumar Roy Chowdhury, Shreehari Ambika Krishnawarrier
Distraction osteogenesis has been a paradigm shift in the field of orthognathic surgery. Majority of the published cases are those of syndromic patients that have been managed using varying treatment protocols. This communication describes a patient of 18-year-old male diagnosed with skeletal Class II malocclusion due to mandibular retognathism. The patient was taken up for mandibular corpus distraction of 10 mm. By this approach the patient was benefitted with good esthetic result and functional occlusion...
March 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29150379/changes-in-maxillofacial-morphology-and-velopharyngeal-function-with-two-stage-maxillary-distraction-mandibular-setback-surgery-in-patients-with-cleft-lip-and-palate
#18
T Susami, Y Mori, K Ohkubo, M Takahashi, Y Hirano, H Saijo, T Takato
Maxillary distraction is increasingly used for the correction of severe maxillary retrusion in patients with cleft lip and palate. However, control of the maxillary movement is difficult, and the need to wear visible distractors for a long period of time causes psychosocial problems. A two-stage surgical approach consisting of maxillary distraction and mandibular setback was developed to overcome these problems. In this study, changes in maxillofacial morphology and velopharyngeal function were examined in 22 patients with cleft lip and palate who underwent this two-stage approach...
November 14, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29142868/protrusive-maxillomandibular-fixation-for-intracapsular-condylar-fracture-a-report-of-two-cases
#19
Yeong Kon Jeong, Won-Jong Park, Il Kyung Park, Gi Tae Kim, Eun Joo Choi
Clinical limitations following closed reduction of an intracapsular condylar fracture include a decrease in maximum mouth opening, reduced range of mandibular movements such as protrusion/lateral excursion, and reduced occlusal stability. Anteromedial and inferior displacement of the medial condyle fragment by traction of the lateral pterygoid muscle can induce bone overgrowth due to distraction osteogenesis between the medial and lateral condylar fragments, causing structural changes in the condyle. In addition, when conventional maxillomandibular fixation (MMF) is performed, persistent interdental contact sustains masticatory muscle hyperactivity, leading to a decreased vertical dimension and premature contact of the posterior teeth...
October 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/29126770/effects-of-unilateral-vertical-mandibular-distraction-osteogenesis-on-airway-anatomy-in-children-with-hemifacial-microsomia
#20
Navid Pourtaheri, Derek Z Wang, Srinivas M Susarla, Gerhard S Mundinger, Anand R Kumar
PURPOSE: To assess the two- and three-dimensional airway changes following unilateral vertical mandibular distraction osteogenesis (vMDO) in patients with hemifacial microsomia (HFM). METHODS: A retrospective evaluation was performed for consecutive patients over an 18-month period with HFM and with Kaban-Pruzansky Type-II mandibular deformities who underwent unilateral vMDO for correction of vertical mandibular asymmetry. Patients with complete records and a minimum of 12 months of clinical follow-up post-consolidation were included...
December 2017: Journal of Cranio-maxillo-facial Surgery
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