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Mandibular Advancement

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https://www.readbyqxmd.com/read/29327733/orthopaedic-treatment-effects-of-functional-therapy-on-the-sagittal-pharyngeal-dimensions-in-subjects-with-sleep-disordered-breathing-and-class-ii-malocclusion
#1
C Pavoni, E Cretella Lombardo, R Lione, P Bollero, F Ottaviani, P Cozza
The purpose of this cephalometric study was to evaluate the craniofacial changes induced by functional treatment of mandibular advancement with special regard to pharyngeal sagittal airway dimensions, tongue and hyoid bone position in subjects with sleep-disordered breathing (SDB) and dentoskeletal Class II malocclusions compared with an untreated Class II control group. 51 subjects (24 female, 27 male; mean age 9.9 ± 1.3 years) with Class II malocclusion and SDB consecutively treated with a functional appliance (Modify Monobloc, MM) were compared with a control group of 31 subjects (15 males, 16 females; mean age 10...
December 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/29317142/volumetric-mandibular-change-after-angle-ostectomy-and-outer-cortex-grinding
#2
Jingyi Zhao, Guodong Song, Xianlei Zong, Xiaonan Yang, Le Du, Xiaoshuang Guo, Chenzhi Lai, Zuoliang Qi, Xiaolei Jin
BACKGROUND: Mandibular angle ostectomy is one of the most common surgical procedures for facial contouring in Asian women. However, some patients complain about mandibular angle hypertrophy recurrence after surgery. The present study evaluated volumetric change of the mandible after angle ostectomy and outer cortex grinding. METHODS: Twenty-four patients who underwent bilateral mandibular angle ostectomy and outer cortex grinding from 2013 to 2016 were enrolled...
December 29, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29287937/mandibular-advancement-devices-in-the-treatment-of-obstructive-sleep-apnea-a-necessary-and-effective-option
#3
Gabriel Sampol Rubio, Emilio Macías Escalada, Josep Maria Montserrat Canal, Joaquín Terán Santos
No abstract text is available yet for this article.
December 26, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/29283939/rabdomyosarcoma-of-the-mandible-an-uncommon-clinical-presentation
#4
Cleverton Roberto de Andrade, Guilherme Dos Santos Trento, Fabiano Jeremias, Elisa Maria Aparecida Giro, Marisa Aparecida Cabrini Gabrielli, Mario Francisco Real Gabrielli, Oslei Paes de Almeida, Valfrido Antonio Pereira-Filho
Rhabdomyosarcoma (RMS) is the most common soft tissue sarcoma in children and adolescents. Most patients present with a mass in the head and neck region, urogenital region, or with distal extremity involvement. The authors describe a challenging case of a 6-year-old male patient presenting with mandibular RMS. The clinical/radiographic/tomographic evaluations classified the tumor as an advanced stage (stage IV), with a mass of 6.0 cm involving the left side of the mandible and parotid region. The biopsy revealed round, spindled, and pleomorphic cells with hyperchromatic nuclei and rare larger rhabdomyoblasts with eosinophilic cytoplasm...
December 27, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29274155/oral-appliance-therapy-in-obstructive-sleep-apnea-long-term-adherence-and-patients-experiences
#5
B Saglam-Aydinatay, T Taner
BACKGROUND: Despite the advances in the treatment of obstructive sleep apnea (OSA) with mandibular advancement appliances (MAA), their effectiveness is dependent on the patients compliance. Our aims were to evaluate the long-term adherence to MAA therapy and patients experiences of the treatment in OSA. MATERIAL AND METHODS: Sixty-nine patients (52 males, 17 females; Mean age: 54.4±10.8 years) were included in the study. The subjects were mild (56%) and moderate (44%) OSA patients who had been treated using MAA at least 4 years prior to the study...
December 23, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/29259367/cone-beam-computed-tomography-as-advanced-diagnostic-aid-in-endodontic-treatment-of-molars-with-multiple-canals-two-case-reports
#6
Amit Pralhad Kamble, Rohini Rangarao Pawar, Sudha Mattigatti, T M Mangala, Saleem Makandar
The purpose of these case reports is to emphasize the importance of knowledge regarding the root canal morphology and current diagnostic aids one should have as both of these important factors going to affect the prognosis of the endodontic treatment. These two case reports describe the maxillary and mandibular first molars with multiple canals. After clinical and radiographic diagnosis, additional help of cone-beam computed tomography (CBCT) of mandibular molar has been taken to evaluate the morphology and canal pattern; while maxillary molar was evaluated using CBCT scan to evaluate the canal configuration and obturation...
July 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29249874/a-systematic-review-on-the-effectiveness-of-titratable-over-nontitratable-mandibular-advancement-appliances-for-sleep-apnea
#7
REVIEW
Gowri Sivaramakrishnan, Kannan Sridharan
Background: Mandibular advancement appliances are being tested for use in patients with obstructive sleep apnea (OSA). However, the effectiveness of titration of these appliances does not have conclusive evidence. Systematic reviews help us to compile all available clinical evidence using statistical principles. Hence, the aim of this systematic review is to identify the effectiveness of titratable over nontitratable mandibular advancement appliances in patients with mild to moderate OSA...
October 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/29249412/comprehensive-analysis-of-soft-tissue-changes-in-response-to-orthognathic-surgery-mandibular-versus-bimaxillary-advancement
#8
A Almukhtar, B Khambay, X Ju, A Ayoub
This study was performed to compare soft tissue changes in response to mandibular and bimaxillary advancement osteotomy. Preoperative and postoperative cone beam computed tomography scans of 24 cases were analysed: 12 underwent bimaxillary advancement and 12 underwent mandibular advancement. The skeletal surgical movements were measured and soft tissue changes were displayed on a three-dimensional colour map. The intensity and shade of the colour indicated the magnitude and direction of the changes. In the bimaxillary advancement group, maxillary advancement was 5...
December 14, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29240202/effectiveness-of-two-different-lingual-flap-advancing-techniques-for-vertical-bone-augmentation-in-the-posterior-mandible-a-comparative-split-mouth-cadaver-study
#9
Istvan Urban, Hannes Traxler, Miguel Romero-Bustillos, Sandor Farkasdi, Barry Bartee, Gabor Baksa, Gustavo Avila-Ortiz
Vertical ridge augmentation in the posterior mandible is a technique-sensitive procedure that requires adequate anatomical knowledge and precise surgical skills to minimize the risk of complications. One of the most important but also challenging aspects of the surgical technique is proper flap management to allow for passive flap closure and reduce the chances of postoperative complications affecting deep anatomical spaces. This article presents a detailed description of a novel lingual flap advancement technique and its validation via a split-mouth, comparative study using a cadaver model...
January 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29236278/head-and-neck-surgical-reconstruction-in-operation-iraqi-freedom-and-operation-enduring-freedom-afghanistan-a-systematic-review
#10
Samantha J Mikals, Joshua M Jabaut, Art A Ambrosio
Historically, head and neck injuries constituted 16 to 20% of all nonfatal combat injuries. However, advances in body and vehicle armor in the context of the use of ambushes and improvised explosive devices by enemy combatants have resulted in fewer fatalities from head and neck wounds, and thus the incidence of nonfatal head and neck injuries has risen to as high as 52%. Despite this increase, data regarding specific injury distributions, surgical cases, and approaches to repair are lacking in the current literature...
December 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/29229071/branching-of-mandibular-canal-on-cone-beam-computed-tomography-images
#11
Masoomeh Afsa, Hamid Rahmati
BACKGROUND: Mandibular neurovascular canal contents may be vulnerable to damage during mandibular surgical procedures. Greater knowledge of the location and configuration of the mandibular canal can help in the safe performance of these procedures in the dental clinic. Cross-sectional CBCT imaging is a good modality for studying the course, location, configuration and accessory branches of the mandibular canal. The aim of this study was to observe the branching of the mandibular canal at different segments of the mandible and mandibular tooth groups...
December 2017: Singapore Dental Journal
https://www.readbyqxmd.com/read/29224971/biomechanical-effects-of-a-mandibular-advancement-device-on-the-temporomandibular-joint
#12
David S P Heidsieck, Jan Harm Koolstra, Maurits H T de Ruiter, Aarnoud Hoekema, Jan de Lange
PURPOSE: Mandibular advancement devices are commonly used in the treatment of patients with mild to moderate obstructive sleep apnea (OSA). Designed to maintain the mandible in forced protrusion while being worn, mandibular advancement devices (MADs) are intended to increase the upper airway during sleep, thereby reducing OSA symptoms. Depending on the extent of mandibular protrusion, side effects including temporomandibular joint dysfunction are frequently reported. These are likely to reduce overall treatment success by affecting therapeutic adherence...
November 22, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29215439/age-related-volumetric-changes-in-mandibular-condyles
#13
Ali-Farid Safi, Martin Kauke, Andrea Grandoch, Hans-Joachim Nickenig, Joachim E Zöller, Matthias Kreppel
A precise knowledge of the condylar changes with advancing age may improve understanding of pathophysiological alterations of the mandibular condyles. However, the majority of studies focusses on morphological changes, although volumetric analysis based upon cone beam computerized tomography may provide important additional data to characterize mandibular condyles. Therefore, we aimed to provide and compare volumetric data of mandibular condyles of a young and old patient group. This is a retrospective chart review of 195 patients with cone beam computerized tomography between 2007 and 2016...
December 6, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29215195/temporomandibular-joint-positional-change-accompanies-post-surgical-mandibular-relapse-a-long-term-retrospective-study-among-patients-who-underwent-mandibular-advancement
#14
M Z Miao, B Wang, D Wu, S Zhang, S Wong, O Shi, A Hu, L Mao, B Fang
OBJECTIVE: This study evaluated the relationship between follow-up temporomandibular joint positional change and mandibular stability among patients who had orthognathic and orthodontic treatment for a skeletal Class II malocclusion. METHODS: Thirty-seven patients who underwent 2-jaw surgery (Le Fort I osteotomy, bilateral sagittal split ramus osteotomy and genioplasty with rigid internal fixation) were included with an average follow-up length of 8.10 ± 2.06 years...
December 7, 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/29214378/the-effectiveness-of-two-types-of-mads-for-osa-therapy
#15
Francis Emma Verburg, Klara Hilda Alphonsine Bollen, Henk-Jan Donker, Gerbrand Johannes Cornelis Kramer
OBJECTIVES: The purpose of this study was to determine differences in effectiveness between two types of mandibular advancement device (MAD). MATERIAL AND METHODS: In this retrospective, cohort study, the two devices used were MAD type "Somnodent-Flex" (MAD 1) and MAD type "Herbst" (MAD 2). One hundred thirty-seven patients participated in this study, 67 patients were treated with MAD 1, and 70 patients with MAD 2. The indication MAD with obstructive sleep apnea (OSA) is based on a polysomnography test, in accordance with the CBO guidelines...
December 6, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29207804/an-evaluation-of-dental-crowding-in-relation-to-the-mesiodistal-crown-widths-and-arch-dimensions-in-southern-indian-population
#16
Partha Jyoti Das, Winniecia Dkhar, Abhimanyu Pradhan
Introduction: With the advancement in imaging technology, 3D dental computed tomography plays a very significant role in orthodontic treatment and diagnosis. Aim: To evaluate dental crowding in relation to the mesiodistal crown widths and arch dimensions and also to determine the differences of dental crowding among males and females, in Southern Indian population. Materials and Methods: A total of 132 subjects were divided into two groups: crowded and non-crowded, each comprising 66 subjects (33 males and 33 females), aged between 15 and 35 years, who were referred for computed tomography scan of brain to the radiology department, were selected...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29207140/platelet-rich-plasma-inhibits-rankl-induced-osteoclast-differentiation-through-activation-of-wnt-pathway-during-bone-remodeling
#17
Dongyue Wang, Yajuan Weng, Shuyu Guo, Yuxin Zhang, Tingting Zhou, Mengnan Zhang, Lin Wang, Junqing Ma
Platelet-rich plasma (PRP) is used in the clinic as an autologous blood product to stimulate bone regeneration and chondrogenesis. Numerous studies have demonstrated that PRP affects bone remodeling by accelerating osteoblast formation. With the research perspective focusing on osteoclasts, the present study established a mouse model of mandibular advancement to examine the effect of PRP on osteoclast differentiation induced by modification of the dynamics of the temporomandibular joint (TMJ). The lower incisors of the mice were trimmed by 1 mm and the resultant change in mandibular position during the process of eating induced condylar adaptation to this change...
November 16, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29202264/is-augmentation-required-to-correct-malar-deficiency-with-maxillary-advancement
#18
Chad Petersen, Michael R Markiewicz, Michael Miloro
PURPOSE: Patients with maxillary hypoplasia also have malar deficiency; therefore, planning can include consideration for simultaneous malar augmentation. The purpose of this study was to compare pre- and postoperative profiles of patients who underwent Le Fort I advancement, with and without malar augmentation, to assess the subjective perception of changes in malar eminence projection. MATERIALS AND METHODS: Patients who had maxillary advancement and mandibular setback with and without malar augmentation were evaluated through a survey consisting of pre- and postoperative photographs that were assessed by professionals and laypersons, and a visual analog scale was used to assess the malar region...
November 14, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29199337/-evaluation-of-profile-aesthetics-of-skeletal-class-%C3%A2-patients-with-different-treatment-methods
#19
Jing-Yun Yang, Chang-Ping He, Yi Zhang, Qian-Qian Huang, Hua-Qiao Wang
PURPOSE: To study the aesthetic appearance of skeletal Class Ⅱ patients with maxillary protrusion and mandibular retrusion treated with different methods. METHODS: The facial profile photographs and lateral cephalometric radiographs of a Chinese woman suffering from skeletal Class Ⅱ with maxillary protrusion and mandibular retrusion was digitized.The digital images were modified to obtain orthodontic compensatory treatment, genioplasty with different advancement ranges and orthognathic treatment comprising 6 profiles by Photoshop software,orthodontic professionals and non-professionals were chosen to score the pictures...
August 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29198376/short-and-long-term-changes-of-the-pharyngeal-airway-after-surgical-mandibular-advancement-in-class-ii-patients-a-three-dimensional-retrospective-study
#20
Oliver Ristow, Thomas Rückschloß, Moritz Berger, Thekla Grötz, Steffen Kargus, Johannes Krisam, Robin Seeberger, Michael Engel, Jürgen Hoffmann, Christian Freudlsperger
PURPOSE: To evaluate the short- and long-term impact of mandibular-only advancement on pharyngeal airway space (PAS) changes by using cone-beam computed tomography (CBCT) and a new segmentation software. Furthermore, to determine whether a correlation exists between forward movement and PAS gain. MATERIALS AND METHODS: A retrospective evaluation of a homogeneous cohort of Class II patients who had undergone mandibular-only advancement was performed. Pre- (T0), post- (T1), and 1-year post-operative (T2) CBCT scans were obtained in each case, and the changes in PAS parameters (volume and smallest cross-sectional area) were compared with new segmentation software...
November 6, 2017: Journal of Cranio-maxillo-facial Surgery
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