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Mandibular distraction

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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
REVIEW
R J de Groot, M A E M Oomens, T Forouzanfar, E A J M Schulten
INTRODUCTION: 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 preprosthetic surgical treatment to reconstruct the atrophic edentulous mandible. The purpose of this review is to provide an overview of the existing literature and to give an evidence-based recommendation for bone grafting and future research. MATERIALS AND METHODS: This systematic review was conducted according to the PRISMA statement...
January 4, 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
#7
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...
January 4, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29215444/mandibular-reconstruction-by-osteogenic-distraction-due-to-two-different-injuries
#8
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...
December 6, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29194258/management-of-nonsyndromic-skeletal-dysgnathia-by-distraction-osteogenesis-long-term-follow-up
#9
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...
November 29, 2017: 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
#10
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
#11
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
#12
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...
October 13, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29126455/micrognathia-with-temporomandibular-joint-ankylosis-and-obstructive-sleep-apnea-treated-with-mandibular-distraction-osteogenesis-using-skeletal-anchorage-a-case-report
#13
Hiroshi Tomonari, Hiroko Takada, Tomofumi Hamada, Sangho Kwon, Tsuyoshi Sugiura, Shouichi Miyawaki
BACKGROUND: We describe the case of a 16-year-old female patient with micrognathia, temporomandibular joint (TMJ) ankylosis, and obstructive sleep apnea, who was treated with mandibular distraction osteogenesis (DO) combined with sliding genioplasty, using skeletal anchorage. CASE PRESENTATION: We first performed interpositional arthroplasty, in which an interposition of fascia temporalis and surrounding fat tissue was inserted into the defect after bilateral condylectomy, increasing the maximum mouth opening from 5...
November 10, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/29072225/bilateral-pediatric-mandibular-distraction-for-micrognathia-with-temporomandibular-joint-ankylosis-and-sleep-apnea
#14
S M Balaji
Mandibular retrognathism is one of the important contributing anatomical factors to the obstructive sleep apnea (OSA). Such patients suffer from number of apneic or hypopneic events during sleep such as snoring, daytime sleepiness, fatigue, inability to concentrate, and irritability. Distraction osteogenesis is a less invasive surgical technique in the management of OSA by correcting the reduced airway space. Apart from correcting functional disturbances due to OSA, it also corrects the facial profile resulting in the substantial improvement in cosmetic appearance...
September 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/29068938/pediatric-obstructive-sleep-apnea-consensus-controversy-and-craniofacial-considerations
#15
REVIEW
Ravi K Garg, Ahmed M Afifi, Catharine B Garland, Ruston Sanchez, Delora L Mount
Pediatric obstructive sleep apnea, characterized by partial or complete obstruction of the upper airway during sleep, is associated with multiple adverse neurodevelopmental and cardiometabolic consequences. It is common in healthy children and occurs with a higher incidence among infants and children with craniofacial anomalies. Although soft-tissue hypertrophy is the most common cause, interplay between soft tissue and bone structure in children with craniofacial differences may also contribute to upper airway obstruction...
November 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29040144/surgical-treatment-of-dentofacial-deformities-caused-by-juvenile-idiopathic-arthritis
#16
Patricia Stoor, Zlatan Hodzic, Sirpa Arte
The purpose of our retrospective study was to evaluate the results of orthognathic treatment, distraction osteogenesis, and/or prosthetic reconstruction of the temporomandibular joints in patients with juvenile idiopathic arthritis (JIA).Twelve patients with severely affected temporomandibular joints (TMJs) and reduced ramus height were treated with mandibular advancement with orthognathic surgery (11) and additional bilateral or unilateral mandibular ramus distraction (3) or additional bilateral or unilateral prosthetic reconstruction of the TMJ (3)...
October 16, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29026807/airway-management-in-pierre-robin-sequence-the-vancouver-classification
#17
Wai-Yee Li, Alana Poon, Douglas Courtemanche, Cynthia Verchere, Sandra Robertson, Marija Bucevska, Claudia Malic, Jugpal S Arneja
BACKGROUND: Pierre Robin sequence (PRS) is a triad of micrognathia, glossoptosis, and respiratory distress. There is no standard clinical classification used in the management of neonatal airway in patients with PRS. The goal of our study was to review the presentation and management of patients with PRS and formulate a clinical grading system and treatment algorithm. METHODS: A 10-year retrospective review of all neonates diagnosed with PRS was performed after obtaining institutional ethics approval...
February 2017: Plastic Surgery
https://www.readbyqxmd.com/read/28968331/reconstruction-of-mandibular-segmental-detects-using-transport-disk-distraction-osteogenesis
#18
Tao Li, Yi Man, Ruiye Bi, Nan Jiang, Yunfeng Li, Songsong Zhu
BACKGROUND: Distraction osteogenesis (DO) has become an important alternative for bone defect reconstruction. The study aims to investigate the clinical feasibility and efficiency of transport disc DO (TDDO) for reconstruction of segmental defect of mandible and further dental implant treatment. METHODS: A serial of 6 patients diagnosed with ameloblastoma or keratocystic odontogenic tumor were included in this study. Computed tomography (CT) scanning and panoramic radiograph were performed for preoperative evaluation and surgery planning...
November 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28962738/facial-improvement-after-mandibular-midline-distraction-and-surgically-assisted-rapid-maxillary-expansion
#19
C Maarten Suttorp, Dries J S Desmedt, Thomas J J Maal, K Hero Breuning
This case report describes the retreatment of a 49-year-old woman with severe crowding in the mandibular incisor region and tapered maxillary and mandibular arches. Treatment consisted of mandibular midline distraction and surgically assisted rapid maxillary expansion to increase arch length. The need for proper presurgical orthodontics is described, and the complications during treatment are discussed. The results of treatment, including the superimposition of 3-dimensional facial scans, are presented. The treatment approach we used is typically indicated for patients with previous extractions of all first premolars who develop significant crowding after treatment...
October 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28946726/management-of-a-dentigerous-cyst-in-a-child-with-robin-sequence
#20
Shayda Mirhaidari, Ananth Murthy
This is a brief clinical report describing an 18-month-old female with Robin sequence found to have an incidental mandibular cystic lesion on a head computed tomography scan in the preoperative workup before performing mandibular distraction. She underwent enucleation of the tumor, which was found to be a dentigerous cyst. One year following cyst enucleation, mandibular distraction was performed in order to alleviate her tongue-based obstruction. This case demonstrates the ability of the mandibular bone to successfully regenerate after undergoing cyst enucleation...
September 2017: Archives of Plastic Surgery
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