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Mandibular Advancement

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https://www.readbyqxmd.com/read/28633929/biomechanical-evaluation-of-different-osteosynthesis-methods-after-mandibular-sagittal-split-osteotomy-in-major-advancements
#1
G B G Klein, G C B Mendes, P D Ribeiro Junior, A Viswanath, M Papageorge
The aim of this study was to assess the biomechanical stability of six different osteosynthesis methods after sagittal split osteotomy. Sixty polyurethane hemimandibles were divided into two groups, with six subgroups in each. After 10-mm advancement of the distal segment (group 1) and 10-mm advancement combined with 20° counterclockwise rotation (group 2), the bone segments were fixed using 2.0-mm plates/screws as follows: subgroup A, one conventional straight plate; subgroup B, two conventional straight plates; subgroup C, one conventional sagittal plate; subgroup D, one locking straight plate; subgroup E, two locking straight plates; subgroup F, one locking sagittal plate...
June 17, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28631539/regional-nerve-blocks-for-equine-dentistry
#2
Molly K Rice
Regional nerve blocks are necessary to facilitate equine oral surgery in the standing sedated patient. Step-by-step instruction on how to perform common regional nerve blocks are discussed, including infraorbital, maxillary, middle mental, and inferior alveolar nerve blocks. Regional nerve blocks are critical when performing dental procedures in the standing horse.(1) The infraorbital and maxillary nerve blocks provide anesthesia of the infraorbital nerve, which is a branch of the maxillary nerve. Both nerve blocks provide adequate anesthesia for all maxillary dental procedures...
June 2017: Journal of Veterinary Dentistry
https://www.readbyqxmd.com/read/28628354/soft-tissue-enhancement-and-implant-placement-following-partial-mandibulectomy-due-to-squamous-cell-carcinoma
#3
Fabio Bernardello, Giampietro Bertasi, Ralph Mackey Powers, Sergio Spinato, Andrea Viaggi, Jimmie Bullock, Pietro Felice
Many dental procedures allow for implant placement in partially or totally edentulous patients. Despite the availability of various implant and abutment types on the market, it often becomes quite challenging to achieve the biological and esthetic goals in a patient who has ridge deficiencies. Where problems will arise is from the lack of adequate bone quality and quantity.1,2 Soft tissue form and maintenance is also a consideration to evaluate.3 Primary reconstructive techniques following segmental mandibulectomy is evolving and improves quality of life...
June 19, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28624835/cbct-location-of-the-fusion-between-the-buccal-and-lingual-cortical-in-the-mandibular-ramus-importance-to-sagittal-split-osteotomy
#4
L Scomparin, M-Q-S Soares, C-M-F Rubira, R-Y-F Yaedú, T-S-N Imada, B-S Centurion, E-S Tolentino, J-R-P Lauris, I-R-F Rubira-Bullen
BACKGROUND: Mandibular Sagittal Split Osteotomy (MSSO) is a popular technique in orthognathic surgery used both to advance and to retreat the mandible. However, MSSO may incur in important complications, such as bad splits and sensorineural injuries. Knowing the location of the fusion between the buccal and lingual cortical (FBLC) in the mandibular ramus and the bone thickness in the region where osteotomies will be performed is determinant in MSSO planning to avoid complications. The aim of this study was to document and evaluate possible differences between sexes regarding the location of the FBLC in relation to the superior cortical of mandibular foramen (MF) and bone thickness in the region of interest for MSSO in a Brazilian population...
June 18, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/28578984/comparison-of-dimensional-accuracy-of-conventionally-and-digitally-manufactured-intracoronal-restorations
#5
Reza Eftekhar Ashtiani, Leila Nasiri Khanlar, Minoo Mahshid, Alireza Moshaverinia
STATEMENT OF PROBLEM: Advances have been made in digital dentistry for the fabrication of dental prostheses, but evidence regarding the efficacy of digital techniques for the fabrication of intracoronal restorations is lacking. PURPOSE: The purpose of this in vitro study was to compare the dimensional accuracy of intracoronal restorations fabricated with digital and conventional techniques. MATERIAL AND METHODS: A sound mandibular molar tooth received a standard onlay preparation, and onlays were fabricated with 1 of 3 fabrication techniques...
June 2, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28578891/autotransplantation-of-mandibular-third-molar-with-buccal-cortical-plate-to-replace-vertically-fractured-mandibular-second%C3%A2-molar-a-novel-technique
#6
Juan Zufía, Francesc Abella, Ivan Trebol, Ramón Gómez-Meda
Tooth replacement often leads to inadequate vertical volume in the recipient site bone when a tooth has been extracted because of a vertical root fracture (VRF). This case report presents the autotransplantation of a mandibular third molar (tooth #32) with the attached buccal cortical plate to replace a mandibular second molar (tooth #31) diagnosed with a VRF. After extraction of tooth #31, the recipient socket was prepared based on the size measured in advance with cone-beam computed tomographic imaging. The precise and calculated osteotomy of the cortical bone of tooth #32 allowed for the exact placement of the donor tooth in the position of tooth #31...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28578372/mandibular-advancement-devices-vs-nasal-continuous-positive-airway-pressure-in-the-treatment-of-obstructive-sleep-apnoea-systematic-review-and-meta-analysis
#7
G Cammaroto, C Galletti, F Galletti, B Galletti, C Galletti, C Gay-Escoda
BACKGROUND: Obstructive sleep apnoea (OSA) is a common disorder that may affect at least 2 to 4% of the adult population. Nasal-Continuous Positive Airway Pressure (N-CPAP) is today considered the gold standard for the treatment of OSA. The development of oral appliances (OAs) represents a new approach for the management of this pathology. The aim of this systematic review is to compare the efficacy of OAs and N-CPAP in the treatment of patients with mild to severe OSA. MATERIAL AND METHODS: A PubMed-MEDLINE and Cochrane databases search of articles published between 1982 and 2016 comparing the effect of N-CPAP and OAs in OSA patients was conducted during July 2016...
June 4, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/28576543/pycnodysostosis-at-otorhinolaryngology
#8
Tekin Baglam, Adem Binnetoglu, Muhammet Fatih Topuz, Nilay Baş Ikizoglu, Refika Ersu, Serap Turan, Murat Sarı
AIM: Pycnodysostosis is a rare autosomal, recessive, skeletal dysplasia caused by a mutation in the cathepsin k gene. Pycnodysostosis is characterized by short stature, characteristic facial appearance (delayed closure of fontanelles and cranial sutures, mandibular hypoplasia and angle disorder, blue sclera), and acroosteolysis of the distal phalanges. Our aim was to describe the otorhinolaryngologic findings, differential diagnoses, various treatment options, and followup in eight cases of pycnodysostosis...
April 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28554462/treatment-of-class-ii-malocclusion-with-mandibular-skeletal-anchorage
#9
Ezgi Cakir, Siddik Malkoç, Mustafa Kirtay
INTRODUCTION: The aim of this case report was to present the dentofacial changes obtained with bone anchorage in a Class II patient with moderate to severe crowding. METHODS: A boy, aged 14.5 years, with a dolichofacial type, convex profile, and skeletal and dental Class II relationships was examined. After evaluation, functional treatment with bone anchorage and 4 first premolar extractions was decided as the treatment approach. Miniplates were placed on the buccal shelves of the mandibular third molars...
June 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28554455/dentoalveolar-and-arch-dimension-changes-in-patients-treated-with-miniplate-anchored-maxillary-protraction
#10
Mohammed H Elnagar, Eman Elshourbagy, Safaa Ghobashy, Mohamed Khedr, Carla A Evans
INTRODUCTION: The aim of this study was to evaluate dentoalveolar and arch dimension changes in 2 miniplate-anchored maxillary protraction protocols in relation to an untreated control group using 3-dimensional digital models. METHODS: Thirty growing Class III subjects with maxillary deficiency in the late mixed or early permanent dentition phase were randomly divided into 3 groups. In group 1 (n = 10), patients were treated with skeletally anchored facemasks anchored with miniplates placed at the zygomatic buttress...
June 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28540613/oral-capnography-is-more-effective-than-nasal-capnography-during-sedative-upper-gastrointestinal-endoscopy
#11
Wei-Nung Teng, Chien-Kun Ting, Yu-Tzu Wang, Ming-Chih Hou, Mei-Yung Tsou, Huihua Chiang, Chun-Li Lin
The role of capnography in esophagogastroduodenoscopy (EGD) is controversial. Simultaneous supplemental oxygen, position of patient, open mouth breathing pattern, and anatomy of the oral and nasal cavity can influence capnography accuracy. This study first measured capnographic data via the nasal or oral cavity during sedated EGD. Secondly, we investigated the influence of supplementary oxygen through the oral cavity on the capnographic reading. Patients with ASA class I or II status admitted for routine EGD exams were enrolled...
May 24, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28526078/the-efficacy-of-chlorhexidine-gel-in-the-prevention-of-alveolar-osteitis-after-mandibular-third-molar-extraction-a-systematic-review-and-meta-analysis
#12
Amare Teshome
BACKGROUND: Alveolar osteitis is a very painful and distressing condition for a patient who has recently undergone a tooth extraction and has led dental professionals to search for preventive measures. The aim of this meta-analysis to determine the effect of chlorhexidine (CHX) gel on the incidence of alveolar osteitis after mandibular third molar extraction. METHODS: Studies were searched for on electronic search engines using Medline (PubMed), Cochrane central, Scopus and advanced Google Scholar from May 2015 to December 2015...
May 19, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28509506/anti-inflammatory-and-regenerative-effects-of-albanian-propolis-in-experimental-vital-amputations
#13
Aida Meto, Agron Meto, Bora Bimbari, Kastriot Shytaj, Mutlu Özcan
This study evaluated the effects of Albanian propolis on the inflamed pulpal tissue after pulpotomy in piglets. In five piglets, two teeth each were infected using special pathogenic microbial flora that was prepared in advance in order to cause inflammation of the pulp. Pulpotomy was performed in the maxillary and mandibular central and lateral incisors. Microbial flora pathogenesis prepared from the section of infected teeth, containing Staphylococcus aureus, Streptococcus viridans, Enterococcus faecalis, Staphylococcus albus and mixed flora were used to cause artificial pulpitis...
September 2016: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28500875/upper-airway-changes-after-mandibular-setback-and-or-advancement-genioplasty-in-obese-patients
#14
Wen Du, Dongming He, Yiyao Wang, Hanghang Liu, Chuhang Liao, Wei Fei, En Luo
PURPOSE: Orthognathic surgeries, such as bilateral sagittal split ramus osteotomy (BSSO) and genioplasty, can influence the pharyngeal airway space (PAS) and this has been supported by previous studies. The purpose of this study was to assess changes of the PAS in patients with a high body mass index (BMI) likely to have narrow airways before and after setback BSSO with or without advancement genioplasty surgery by 3-dimensional computed tomography. MATERIALS AND METHODS: Thirty-five adults with a BMI of at least 24...
April 19, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28493179/where-to-position-osteotomies-in-genioglossal-advancement-surgery-based-on-locations-of-the-mental-foramen-canine-lateral-incisor-central-incisor-and-genial-tubercle
#15
Joshua S Park, Christopher Lee, Jason M Rogers, Ho-Hyun Sun, Yuan F Liu, Jeffrey A Elo, Jared C Inman
PURPOSE: The study aimed to provide precise measurements of anterior mandibular structural anatomy and to explore potential osteotomies for genioglossal advancement. METHODS: Cone beam computed tomography was used to analyze 33 randomly selected patients undergoing surgery for obstructive sleep apnea (OSA) between 2014 and 2016 at an academic surgical hospital. The locations of relevant mandibular structures were measured and statistical modeling was performed. RESULTS: Mean horizontal distances from midline to the mental foramina and the roots of the canine, lateral incisor, and central incisor were 22...
May 11, 2017: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28482446/-effect-of-mandibular-advancement-device-upon-nuclear-factor-%C3%AE%C2%BAb-and-tumor-necrosis-factor-%C3%AE-interleukin-6-in-genioglossus-of-rabbit-with-obstructive-sleep-apnea-hypopnea-syndrome
#16
S L Zhang, C Y Liu, W Wang, X Qiao, H Y Lu
Objective: To investigate the effects of mandibular advancement device (MAD) upon nuclear factor κB (NF-κB), tumor necrosis factor α (TNF-α) and interleukin 6 (IL-6) in the genioglossus. Methods: Eighteen New Zealand white rabbits (male, six months old), in accordance with the random number table, were equally divided into three groups, the control group, obstructive sleep apnea hypopnea syndrome (OSAHS) group and MAD group. All animals were induced to sleep in supine position for 2 hours every morning in the next 8 weeks...
May 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28475092/technological-advances-in-endodontics-treatment-of-a-mandibular-molar-with-internal-root-resorption-using-a-reciprocating-single-file-system
#17
Samir Noronha de Souza, André Augusto Franco Marques, EmÍlio Carlos Sponchiado-Júnior, Lucas da Fonseca Roberti Garcia, Matheus Franco da Frota, Fredson Márcio Acris de Carvalho
The field of endodontics has become increasingly successful due to technological advances that allow clinicians to solve clinical cases that would have been problematic a few years ago. Despite such advances, endodontic treatment of teeth with internal root resorption remains challenging. This article presents a clinical case in which a reciprocating single-file system was used for endodontic treatment of a mandibular molar with internal root resorption. Radiographic examination revealed the presence of internal root resorption in the distobuccal root canal of the mandibular right first molar...
May 2017: General Dentistry
https://www.readbyqxmd.com/read/28473927/influence-of-oral-appliances-for-mandibular-advancement-on-dentitions-using-a-strain-gauge-analysis-a-pilot-study
#18
Hiroshi Ueda, Yu Matsumura, Atsushi Horihata, Cynthia Concepcion, Koji Iwai, Kotaro Tanimoto
Introduction. This study aimed to evaluate the influence of oral appliances (OAs) on dentition using a strain gauge analysis. Materials/Methods. Eight volunteers, who were mild snorers, participated in this study. OAs were individually constructed, and advancement was defined as two-thirds of the maximum mandibular advancement. Strain gauges were mounted on the right first molar and central incisor of both the upper and lower arches. After OA use, two measurement sessions (short- and long-term) were performed...
2017: Sleep Disorders
https://www.readbyqxmd.com/read/28468174/the-strategy-of-delayed-reconstruction-of-the-mandible-in-war-injuries
#19
Firas Taha Ahmed, Marwa Turkey Aljeuary
The most common causes of mandibular defects are ablative surgery of benign or malignant tumors, severe trauma, inflammatory diseases, and osteoradionecrosis. War injuries are another cause for mandibular defect. Reconstruction of the mandible is considered a challenge to the maxillofacial surgeon due to the accompanying functional and cosmetic importance. The object of this article was to show the role of nonvascularized bone graft in the reconstruction of segmental defect of the mandible resulted from projectiles and its snags...
May 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28468153/long-term-evaluation-of-mandibular-growth-in-children-with-fgfr2-mutations
#20
John C Kolar, Kanlaya Ditthakasem, Jeffrey A Fearon
BACKGROUND: Understanding mandibular growth in children with fibroblast growth factor receptor 2 (FGFR2) mutations is important for planning the degree of midface advancement, and for determining the best treatment for obstructive sleep apnea. Yet, relatively little is known about growth of the unoperated mandible in affected children. The purpose of this study was to evaluate mandibular growth through skeletal maturity in Apert, Crouzon, and Pfeiffer syndromes. METHODS: A retrospective chart review was performed...
May 2017: Journal of Craniofacial Surgery
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