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Reconstruction of mandible

Jung-Won Cho, Jung-Hyun Park, Jin-Woo Kim, Sun-Jong Kim
BACKGROUND: Temporomandibular joint (TMJ) ankylosis in children often leads to facial deformity, functional deficit, and negative influence of the psychosocial development, which worsens with growth. The treatment of TMJ ankylosis in the pediatric patient is much more challenging than in adults because of a high incidence of recurrence and unfavorable growth of the mandible. CASE REPORT: This is a case report describing sequential management of the left TMJ ankylosis resulted from trauma in early childhood...
December 2016: Maxillofacial Plastic and Reconstructive Surgery
Jiabing Fan, Mian Guo, Choong Sung Im, Joan Pi-Anfruns, Zhong-Kai Cui, Soyon Kim, Benjamin Wu, Tara Aghaloo, Min Lee
Growth factor-based therapeutics using bone morphogenetic protein 2 (BMP-2) present a promising strategy to reconstruct craniofacial bone defects such as mandible. However, clinical applications require supraphysiological BMP doses that often increase inappropriate adipogenesis, resulting in well-documented cyst-like bone formation. Here we reported a novel complementary strategy to enhance osteogenesis and mandibular bone repair by employing small molecule phenamil that has been shown to be a strong activator of BMP signaling...
October 22, 2016: Tissue Engineering. Part A
C Li, Y C Cai, W Wang, Q L Li, Y Q Zhou, J F Liu, C Y Shui, L Huang, M Deng, G Q Zhu, K Liu, S X Wang, J Chen, R H Sun
No abstract text is available yet for this article.
October 7, 2016: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
Jianhua Wang, Yang Lu, Hong Xia, Qingshui Yin
PURPOSE: To investigate a unique procedure of joined transoral and retropharyngeal high cervical approach (JTRC) without mandibulectomy for treating upper cervical neoplasm involving both C2 and C3. METHOD: A 23-year-old male patient had neoplasma involving C2 and C3 that caused pathologic fracture of C2 and bony destruction of C3. The neoplasm excision and cervical spine reconstruction were performed through JTRC approach without splitting up the mandible. In this approach, there were two surgery windows that could be applied in turns by closing or opening the mouth to gain an ideal exposure...
October 18, 2016: European Spine Journal
Narges Shayesteh Moghaddam, Ahmadreza Jahadakbar, Amirhesam Amerinatanzi, Mohammad Elahinia, Michael Miller, David Dean
: The aim of this study is to investigate the behavior of the healthy mandible under maximum molar bite force to demonstrate the problems associated with the current standard of care procedures for mandibular segmental defect reconstruction (ie, use of Ti-6Al-4V hardware and either a single- or double-barrel fibular graft). With current Ti-6Al-4V mandibular reconstruction hardware, there is a significant stiffness mismatch among the hardware, graft, and the remaining host anatomy. How the distribution of mechanical forces through the mandible is altered after a segmental bone loss and reconstruction is incompletely understood...
September 2016: Plastic and Reconstructive Surgery. Global Open
Alastair Henry, James A McCaul
INTRODUCTION: Complex hard and soft tissue defects produced as a result of ablative resection of head and neck malignancy can represent a reconstructive challenge, especially when patients are medically compromised. PRESENTATION OF CASE: We present the case of 72-year-old women presenting with an oral squamous cell carcinoma of the right floor of mouth invading the right mandible. Surgical management of the disease required ablative surgery with complex free tissue transfer reconstruction to provide restoration of form and function...
October 12, 2016: International Journal of Surgery Case Reports
Mustafa Sancar Ataç, Yeliz Kilinç
The bony augmentation of severely atrophied mandible is generally required for the purposes of prosthetic rehabilitations. The treatment strategies have been well defined in the literature ranging from osteotomy techniques to distraction osteogenesis. Visor osteotomy is the milestone of the reconstructive surgery for the atrophied mandible which has received some modifications. In the present study, the authors describe a new modification of visor osteotomy in which a complete coronal split osteotomy down to the inferior border at the mental region has been performed...
October 14, 2016: Journal of Craniofacial Surgery
Erick Silva, Emanuela Prado Ferraz, Evandro Carneiro Martins Neto, Liat Chaushu, Gavriel Chaushu, Samuel Porfirio Xavier
The aim of this prospective controlled study present study is to evaluate volumetric changes of newly created bone following reconstruction of the atrophic posterior mandible using FFB. Twenty consecutive patients presenting for reconstruction of posterior mandibular alveolar bone ridge width ≤ 6.0 mm and/or height≤ 6.0 who met all inclusion and exlusion criteria were included. FFB blocks were used. The main outcome variable investigated was bone volume dynamics. Vertical, horizontal and three-dimensional bone gain data was measured from computerized tomography scans...
October 18, 2016: Journal of Oral Implantology
Soung Min Kim, Emmanuel K Amponsah, Hui Young Kim, Ik Jae Kwon, Hoon Myoung, Jong Ho Lee
: Ameloblastoma is the most common benign odontogenic tumor of the jaw, and expansional growth of a huge untreated ameloblastoma can result in disturbances in facial aesthetics and function, such as difficulty with mouth opening, swallowing, chewing, breathing, neurologic deficits, and pathologic fractures. Radical wide resection with safety margins and subsequent reconstruction is generally recommended. A fibular free flap (FFF) is commonly used to reconstruct the mandible in order to adequately restore both aesthetic appearance and function...
September 2016: Ghana Medical Journal
Sharad Gupta, Akshay Bhargava, Praful Mehra
Rehabilitation of mandibular resection poses functional, esthetic, and psychological challenges. The deviation and rotation of the mandible toward the resected side leaves the patient with almost no option of chewing. This is aggravated if the patient is edentulous. The case report discussed in this article was an edentulous patient taken up with the primary goal to limit deviation toward resected side and provide a stable and retentive prosthesis to the patient. Two implants were placed anteriorly, splinted with bar and clip supported superstructure...
October 2016: Journal of Indian Prosthodontic Society
Sowmya Velekkatt Surendran, Sharmila Hussain, S Bhoominthan, Sanjna Nayar, Ragavendra Jayesh
STATEMENT OF PROBLEM: When reconstructing the occlusal curvatures dentists often use a 4-inch radii arc as a rough standard based on Monson spherical theory. The use of an identical radius for the curve of Spee for all patients may not be appropriate because each patient is individually different. The validity of application of this theory in the Indian population and the present study has been undertaken. AIMS AND OBJECTIVES: This study is an attempt to evaluate the curve of Spee and curve of Wilson in young Indian population using three dimensional analysis...
October 2016: Journal of Indian Prosthodontic Society
Loreto Castellon, Daniel Jerez, Jaime Mayorga, Carlos Fuenzalida
Mandibular tumors are rare in children. Most mandibular tumors in children are benign and locally aggressive, and some might require resection to prevent recurrence. Mandibular reconstruction after tumor resection in children has been less documented in published studies than mandibular reconstruction in adults. In children, age, the growth potential of the mandible, and the donor site are important factors that must be considered. The costochondral graft is an option for reconstruction of the resected portion of the mandible in children, especially when the resection involves the condyle, owing to its biologic and anatomic similarity to the temporomandibular joint and its regenerative and growth potential...
September 17, 2016: Journal of Oral and Maxillofacial Surgery
M Pedrazzoli, L Autelitano, F Biglioli
Mandibular fracture is usually the clinical end of bisphosphonate-related osteonecrosis of the jaw. This is a painful complication and patients cannot feed as usual, with a worsening of their quality of life. The goal of treatment in bisphosphonate related osteonecrosis of jaw (BRONJ) patients is to slow progression of bone necrosis. We present a novel technique for treatment of severe mandibular BRONJ in stage 3 patients that present with a high risk to develop fracture, since they have a residual unaffected mandibular bone height less than 6 mm...
August 2016: Acta Otorhinolaryngologica Italica
Jeffrey Y Tsai, Barry C Boyd, Ted C Ondracek, Etern S Park
We present a case of a parapharyngeal schwannoma of the mandibular nerve with intraosseous extension into the mandible. The initial symptoms included decreased auditory acuity, with subsequent magnetic resonance imaging findings suggestive of Eustachian tube obstruction. This represents a rare symptom of schwannomas of the mandibular nerve. Owing to the degree of bony expansion and cortical thinning of the adjacent mandibular ramus, concern existed for a pathologic fracture. Treatment involved complete excision of the lesion using hemimandibulectomy with second stage reconstruction...
September 15, 2016: Journal of Oral and Maxillofacial Surgery
Wen-Bo Zhang, Yao Yu, Yang Wang, Chi Mao, Xiao-Jing Liu, Chuan-Bin Guo, Guang-Yan Yu, Xin Peng
While vascularized iliac crest flap is widely used for mandibular reconstruction, it is often challenging to predict the clinical outcome in a conventional operation based solely on the surgeon's experience. Herein, we aimed to improve this procedure by using computer-assisted techniques. We retrospectively reviewed records of 45 patients with mandibular tumor who underwent mandibulectomy and reconstruction with vascularized iliac crest flap from January 2008 to June 2015. Computer-assisted techniques including virtual plan, stereomodel, pre-bending individual reconstruction plate, and surgical navigation were used in 15 patients...
August 25, 2016: Journal of Cranio-maxillo-facial Surgery
Willem L J Weijs, Casper Coppen, Ruud Schreurs, Rinaldo D Vreeken, Arico C Verhulst, Matthias A W Merkx, Stefaan J Bergé, Thomas J J Maal
OBJECTIVE: Since reconstruction of composite defects in the head and neck region is a challenging and demanding problem for head and neck surgeons, surgical aids have been sought for decades. The purpose of this study was to evaluate the accuracy of prefabricated surgical resection templates used in mandibular segmental resections in comparison to the virtual surgical plan. MATERIALS AND METHODS: A prospective study was performed in 11 consecutive patients, with a primary T4 oral squamous cell carcinoma or osteoradionecrosis of the mandible...
September 9, 2016: Journal of Cranio-maxillo-facial Surgery
Thomas Frisch
BACKGROUND: The facial artery myomucosal (FAMM) island flap is a cheek flap, pedicled on the facial artery and suitable for small to medium-sized reconstructions of the oral cavity and neighboring areas. A novel transposition of the flap to the hypopharynx after laryngectomy is presented in this report. METHODS: A 58-year-old man, previously irradiated, was laryngopharyngectomized because of a new supraglottic carcinoma. An unexpected need for a flap was solved by tunneling a FAMM island flap lateral to the mandible...
October 5, 2016: Head & Neck
Eduardo Pinheiro Domingues, Rafael Fernandes Ribeiro, Martinho Campolina Rebello Horta, Flávio Ricardo Manzi, Maurício Greco Côsso, Elton Gonçalves Zenóbio
OBJECTIVE: Using computed tomography, to compare vertical and volumetric bone augmentation after interposition grafting with bovine bone mineral matrix (GEISTLICH BIO-OSS(®) ) or hydroxyapatite/tricalcium phosphate (STRAUMANN(®) BONECERAMIC) for atrophic posterior mandible reconstruction through segmental osteotomy. MATERIAL AND METHODS: Seven patients received interposition grafts in the posterior mandible for implant rehabilitation. The computed tomography cone beam images were analysed with OsiriX Imaging Software 6...
October 4, 2016: Clinical Oral Implants Research
Vinay V Kumar, Supriya Ebenezer, Peer W Kämmerer, P C Jacob, Moni A Kuriakose, Naveen Hedne, Wilfried Wagner, Bilal Al-Nawas
OBJECTIVES: The objective of this study was to assess the difference in success rates of implants when using two or four implant-supported-overdentures following segmental mandibular reconstruction with fibula free flap. METHODS AND DESIGNS: This prospective, parallel designed, randomized clinical study was conducted with 1:1 ratio. At baseline, all participants already had segmental reconstruction of mandible with free fibula flap. The participants were randomized into two groups: Group-I received implant-supported-overdentures on two tissue-level implants and Group-II received implant-supported-overdentures on four tissue-level implants...
September 9, 2016: Journal of Cranio-maxillo-facial Surgery
Erik Jarefors, Thomas Hansson
OBJECTIVE: The vascularised free fibular flap is considered to be a reliable choice for reconstruction of oromandibular defects, especially after resection of malignant tumours in the area. This study evaluates the functional outcome of this method. METHOD: From January 2001 - May 2014, 37 patients were treated at the University Hospital of Linköping using the free fibular flap. The authors present the results from 17. This study reviewed their records and used the University of Washington Quality-of-Life questionnaire (UW-QoL), the Head and Neck Performance Status Scale (PSS), and interviews to assess their outcome...
August 15, 2016: Journal of Plastic Surgery and Hand Surgery
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