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Mandibular Advancement

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https://www.readbyqxmd.com/read/28078129/osteonecrosis-of-the-jaw-associated-with-ziv-aflibercept
#1
Hani Mawardi, Peter Enzinger, Nadine McCleary, Reshma Manon, Alessandro Villa, Nathaniel Treister, Sook-Bin Woo
Medication-related osteonecrosis of the jaw (MRONJ) has been associated with medications that include bisphosphonates (BPs), denosumab, bevacizumab and sunitinib. Ziv-aflibercept is a recombinant human vascular endothelial growth factor (VEGF) receptor which has been used to treat patients with various advanced solid tumors. We report three patients without a history of the use of medications known to cause MRONJ presenting with jaw osteonecrosis typical for MRONJ following therapy with ziv-aflibercept. All patients had metastatic gastrointestinal cancer treated with ziv-aflibercept and were evaluated for MRONJ because of exposed bone in the oral cavity...
December 2016: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28071618/clinico-pathological-factors-affecting-lymph-node-yield-in-indian-patients-with-locally-advanced-squamous-cell-carcinoma-of-mandibular-gingivo-buccal-sulcus
#2
S S Muttagi, B R Patil, A S Godhi, D K Arora, S R Hallikerimath, A D Kale
AIM: Lymph node yield (LNY) is a valid marker of prognosis in oral cancer. Precise estimation of LNY in Indian patients with T3/T4 gingivobuccal sulcus squamous cell carcinoma (GBS-SCC) has not been well documented. Hence, the primary objective of the study was to determine the LNY in patients with T3/T4 SCC of mandibular GBS, and the secondary objective was to study the association of LNY with clinicopathological factors such as tumor thickness, histological differentiation, number of positive nodes, and extracapsular spread (ECS)...
April 2016: Indian Journal of Cancer
https://www.readbyqxmd.com/read/28065728/are-there-risk-factors-for-osseous-mandibular-inferior-border-defects-after-bilateral-sagittal-split-osteotomy
#3
J P Verweij, J G van Rijssel, M Fiocco, G Mensink, P J J Gooris, J P R van Merkesteyn
PURPOSE: Bone defects of the inferior mandibular border (osseous inferior border defects) can cause unesthetic postoperative outcomes after bilateral sagittal split osteotomy (BSSO). The aim of this study was to estimate the frequency of osseous inferior border defects after BSSO and to identify risk factors for this complication. MATERIALS AND METHODS: This retrospective study included consecutive patients who underwent BSSO for mandibular retrognathia. The primary outcome was the presence/absence of osseous inferior border defects...
December 21, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28060199/management-of-skeletal-class-ii-malocclusion-by-surgery-first-approach
#4
Gagan Deep Kochar, Ashish Chakranarayan, Sanjay M Londhe, Bensy Varghese, Balakrishna Jayan, Sukhbir S Chopra, Rajat Mitra, Munish Verma
Surgery-first approach (SFA) has been a paradigm shift in the field of orthognathic surgery. Majority of the published cases that have been managed by this approach are of skeletal class III. This communication describes a patient of 18-year-old male diagnosed with skeletal class II malocclusion due to mandibular retognathism. He was managed with SFA and was using skeletal anchorage system to prevent postsurgical relapse. Bilateral saggital split ramus osteotomy was carried out to achieve the mandibular advancement of 7 mm...
January 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28060088/maxillary-expansion-and-mandibular-setback-surgery-with-and-without-mandibular-anterior-segment-osteotomy-to-correct-mandibular-prognathism-with-obstructive-sleep-apnea
#5
Jeong Joon Han, Dong Hwan Hong, Soon Jung Hwang
Mandibular prognathism is usually treated with mandibular setback surgery. However, this approach reduces the pharyngeal airway space, and can aggravate obstructive phenomena in patients with obstructive sleep apnea (OSA). While maxillary expansion is known to lead to an increase in the pharyngeal airway volume (PAS), its effect on the PAS in mandibular setback surgery has not yet been reported. The authors report a surgical approach with maxillary expansion in 2 patients with mandibular prognathism that was accompanied by OSA: maxillary midsagittal expansion with minimum maxillary advancement and minor mandibular setback without mandibular anterior segmental osteotomy (ASO) or major mandibular setback with mandibular ASO...
January 5, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28056334/immediate-microsurgical-bone-and-nerve-reconstruction-in-the-irradiation-treated-patient-a-case-report
#6
Ramzey Tursun, J Marshall Green
Microsurgical reconstructive techniques have revolutionized the treatment of large head and neck defects. These defects were once forever life altering because of the considerable morbidity to both the form and function of the patient. As time has progressed, microsurgical technique has improved dramatically and has become institutionalized in our training programs. Free flap outcomes in head and neck reconstruction have improved dramatically, and optimization of these outcomes is now key. One overlooked area has been neurosensory reconstruction...
December 11, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28053912/management-of-obstructive-sleep-apnea-in-a-treacher-collins-syndrome-patient-using-distraction-osteogenesis-of-the-mandible
#7
İbrahim Damlar, Ahmet Altan, Berk Turgay, Soydan Kiliç
In this study, we present the surgical treatment of obstructive sleep apnea in a child with Treacher Collins syndrome. A 10-year-old girl with a past history of Treacher Collins syndrome presented to our clinic with her parents for respiratory distress and insomnia. The patient was referred to a sleep laboratory where she was diagnosed with obstructive sleep apnea, which was a consequence of her Treacher Collins syndrome. The patient underwent mandibular distraction osteogenesis under general anesthesia. The mandible was expanded by 15 mm using internal bilateral distractors...
December 2016: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/28050515/endodontic-management-of-a-mandibular-first-molar-with-radix-entomolaris-and-conservative-post-endodontic-restoration-with-cad-cam-onlay-a-novel-clinical-technique
#8
Kanika Yadav, Ida De Noronha De Ataide, Marina Fernandes, Rajan Lambor, Dalip Alreja
This case report describes a novel technique of restoring endodontically treated teeth. Hidden caries causing irreversible pulpitis in a mandibular molar with Radix Entomolaris (RE) was evident. The intact occlusal surface anatomy was duplicated before preparing an access cavity to replicate the original occlusal surface in the post endodontic restoration using (Computer-Aided Design and Computer-Aided Manufacturing) CAD/CAM technique. This report highlights uniquely designed onlay utilizing the benefits of contemporary materials and advanced technology...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28049241/predictive-value-of-dental-maturity-for-a-positive-gonadotropin-releasing-hormone-stimulation-test-result-in-girls-with-precocious-puberty
#9
Jee Seon Baik, Jin Woo Choi, Su Jin Kim, Ji Hyun Kim, Sollip Kim, Jae Hyun Kim
Dental maturity is associated with skeletal maturity, which is advanced in girls with central precocious puberty (CPP). We investigated the performance of dental maturity as a screening method for CPP using mandibular second premolar and molar calcification stages, assessed the associated anthropometric and laboratory factors, and evaluated pubertal response predictors using the gonadotropin-releasing hormone stimulation test (GnRHST) in prepubertal and pubertal girls. A prospective case-control study was conducted in girls, aged 7...
February 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28045634/an-accurate-method-of-designing-and-performing-individual-specific-genioglossus-advancement
#10
Stanley Yung-Chuan Liu, Leh-Kiong Huon, Soroush Zaghi, Robert Riley, Carlos Torre
There is too much individual patient variation in mandibular anatomy for any single described genioglossus advancement technique to be used consistently. Virtual surgical planning allows surgeons to design genioglossus osteotomy that captures the structures of interest. Intraoperative osteotomy and positioning guides mitigate known risks of the procedure while maximizing the reproducibility and efficacy of the procedure. In this report, we demonstrate the protocol step by step as it had been used on 10 patients, and we highlight 3 clinical scenarios that exemplify its utility...
January 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28041886/maxillary-advancement-versus-mandibular-setback-in-class-iii-dentofacial-deformity-are-there-any-differences-in-aesthetic-outcomes
#11
M Ghassemi, R-D Hilgers, U Fritz, A Modabber, A Ghassemi
A retrospective evaluation of maxillary advancement and mandibular setback in class III patients was performed and their aesthetic outcomes compared. Patients with a sella-nasion-A-point angle (SNA) of 80-84° were selected. Pre- and postoperative lateral cephalograms were obtained for 34 class III patients; these were divided into two groups according to the surgical procedure performed: mandibular setback group (n=17) and maxillary advancement group (n=17). The pre- and postoperative cervical length, lip-chin-throat angle, lower/upper lip thickness, distance from the lower/upper lip to the aesthetic line, soft tissue angle, facial contour angle, and nasolabial angle of the two groups were compared...
December 29, 2016: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28027997/impact-on-the-upper-airway-space-of-different-types-of-orthognathic-surgery-for-the-correction-of-skeletal-class-iii-malocclusion-a-systematic-review-and-meta-analysis
#12
REVIEW
Jinlong He, Yunji Wang, Hongtao Hu, Qian Liao, Weiyi Zhang, Xuerong Xiang, Xiaoping Fan
OBJECTIVE: This study is aimed at assembling, through a systematic review and meta-analysis, scientific evidence related to the effects of mandibular setback (MdS) surgery and bimaxillary surgery for the correction of Class III malocclusion on the cross-sectional area (CSA) and volume of the upper airway as assessed using CT. METHODS: An electronic search was conducted on Cochrane Library, EMBASE, PubMed, Scopus and Web of Science up to June 20, 2016. The inclusion criteria were prospective or retrospective studies, with the aim of comparing the impact on the upper airway space of orthognathic surgery for the treatment of the skeletal class III malocclusion...
December 24, 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/28024784/assessing-the-feasibility-of-yttria-stabilized-zirconia-in-novel-designs-as-mandibular-anterior-fixed-lingual-retention-after-orthodontic-treatment
#13
Matthew M Stout, Brian K Cook, Dwayne D Arola, Hanson Fong, Ariel J Raigrodski, Anne-Marie Bollen
INTRODUCTION: The purpose of this study is to explore the feasibility of yttria-stabilized zirconia (Y-TZP) in fixed lingual retention as an alternative to stainless steel. METHODS: Exploratory Y-TZP specimens were milled to establish design parameters. Next, the specimens were milled according to ASTM standard C1161-13 and subjected to 4-point flexural tests to determine material properties. Finite element analysis was used to evaluate 9 novel cross-sectional designs, which were compared with stainless steel wire...
January 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28005762/jaw-in-a-day-state-of-the-art-in-maxillary-reconstruction
#14
Christopher M Runyan, Vishal Sharma, David A Staffenberg, Jamie P Levine, Lawrence E Brecht, Leonard H Wexler, David L Hirsch
BACKGROUND: Reconstruction of maxillary defects following tumor extirpation is challenging because of combined aesthetic and functional roles of the maxilla. One-stage reconstruction combining osseous free flaps with immediate osseointegrated implants are becoming the standard for mandibular defects, and have similar potential for maxillary reconstruction. METHODS: A woman with maxillary Ewing sarcoma successfully treated at age 9 with neoadjuvant chemotherapy, right hemimaxillectomy, and obturator prosthetic reconstruction presented for definitive reconstruction, complaining of poor obturator fit, and hypernasality...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27995120/tonsillectomy-as-prevention-and-treatment-of-sleep-disordered-breathing-a-report-of-23-cases
#15
Jae-Man Woo, Jin-Young Choi
BACKGROUND: The paradigm of tonsillectomy has shifted from a treatment of recurrent throat infection to one of multi-discipline management modalities of sleep-disordered breathing (SDB). While tonsillectomy as a treatment for throat problems has been performed almost exclusively by otorhinolaryngologists, tonsillectomy as a part of the armamentarium for the multifactorial, multidisciplinary therapy of sleep-disordered breathing needs a new introduction to those involved in treating SDB patients...
December 2016: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27994433/management-of-severe-skeletal-class-iii-malocclusion-with-bimaxillary-orthognathic-surgery
#16
Jitesh Haryani, Amit Nagar, Divya Mehrotra, Rani Ranabhatt
Orthognathic surgery in conjunction with fixed orthodontics is a common indication for interdisciplinary management of severe skeletal Class III malocclusion. A thorough analysis of pretreatment investigations and development of a surgical visual treatment objective is essential to plan the type of surgical technique required. Bimaxillary orthognathic surgery is the most common type of surgical procedure for severe skeletal discrepancies. The present case report is a combined ortho-surgical team management of a skeletally Class III patient...
October 2016: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/27966544/a-synonymous-splicing-mutation-in-the-sf3b4-gene-segregates-in-a-family-with-highly-variable-nager-syndrome
#17
Matteo Cassina, Cristina Cerqua, Silvia Rossi, Leonardo Salviati, Alessandro Martini, Maurizio Clementi, Eva Trevisson
Nager syndrome is a rare preaxial acrofacial dysostosis that is caused by heterozygous loss-of-function variants in SF3B4. This gene encodes for a protein required for the assembly of spliceosomal complexes, being a master gene for splicing regulation. The main clinical features of Nager syndrome include facial-mandibular and preaxial limb malformations, with normal cognitive functioning. Most Nager patients are sporadic, but few familial cases with a highly variable phenotype have been reported. In this work, we report a novel synonymous variant within exon 3 of the SF3B4 gene in a family with three members affected by Nager syndrome...
December 14, 2016: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/27964849/can-nocturnal-use-of-implant-retained-overdenture-improve-cardiorespiratory-stability-of-a-patient-with-obstructive-sleep-apnea-a-clinical-report
#18
Bulent Piskin, Alper Uyar, Bugra Senel, Hakan Avsever, Omer Karakoc, Canturk Tasci, Gurkan Rasit Bayar
Few studies have evaluated the interaction between conventional complete dentures (CCD) and the respiratory system and the authors are unaware of any that evaluated the interaction between implant-retained overdentures (IROs) and the respiratory system. This clinical report documented the effects of wearing an IRO on the cardiorespiratory stability of an edentulous patient with obstructive sleep apnea (OSA). A 64-year-old woman was referred to the department of otolaryngology because of daytime sleepiness and morning headaches...
December 10, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27942547/evaluation-of-condylar-position-after-orthognathic-surgery-for-treatment-of-class-ii-vertical-maxillary-excess-and-mandibular-deficiency-by-using-cone-beam-computed-tomography
#19
Reza Tabrizi, Shoaleh Shahidi, Emad Bahramnejad, Hamidreza Arabion
STATEMENT OF THE PROBLEM: In orthognathic surgeries, proper condylar position is one of the most important factors in postoperative stability. Knowing the condylar movement after orthognathic surgery can help preventing postoperative instabilities. PURPOSE: The aim of this study was to evaluate the condylar positional changes after Le Fort I maxillary superior repositioning along with mandibular advancement by using cone beam computed tomography (CBCT). MATERIALS AND METHOD: This cross-sectional study was conducted on 22 subjects who had class II skeletal malocclusion along with vertical maxillary excess...
December 2016: Journal of Dentistry
https://www.readbyqxmd.com/read/27932405/dentoskeletal-effects-of-oral-appliance-wear-in-obstructive-sleep-apnoea-and-snoring-patients
#20
Giulio Alessandri-Bonetti, Vincenzo D'Antò, Chiara Stipa, Roberto Rongo, Serena Incerti-Parenti, Ambrosina Michelotti
OBJECTIVES: To evaluate the dentoskeletal changes associated with long-term and continuous mandibular advancement device (MAD) use in sleep-related breathing disorder patients. METHODS: Cephalometric measurements and three-dimensional model analysis were performed at baseline and after 3.5 ± 1.1 years in 20 snoring and obstructive sleep apnoea patients treated with the Silensor® appliance. Intra-group differences were compared using paired t-test or Wilcoxon signed-rank test...
December 8, 2016: European Journal of Orthodontics
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