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Mandibular surgery

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https://www.readbyqxmd.com/read/27913253/vibrissal-paralysis-produces-increased-corticosterone-levels-and-impairment-of-spatial-memory-retrieval
#1
William E Patarroyo, Milady García-Perez, Marisol Lamprea, Alejandro Múnera, Julieta Troncoso
This research was aimed at establishing how the absence of active whisking in rats affects acquisition and recovery of spatial memory. The mystacial vibrissae were irreversibly paralyzed by cutting the facial nerve's mandibular and buccal branches bilaterally in the facial nerve lesion group (N=14); control animals were submitted to sham-surgery (N=15). Sham-operated (N=11) and facial nerve-lesioned (N=10) animals were trained (one session, eight acquisition trials) and tested 24hours later in a circular Barnes maze...
November 29, 2016: Behavioural Brain Research
https://www.readbyqxmd.com/read/27908573/does-the-age-of-a-patient-affect-the-outcome-of-temporomandibular-joint-arthroscopic-surgery
#2
Jungsuk Cho, Howard Israel
PURPOSE: Although temporomandibular joint (TMJ) disorders encompass all age groups, it is generally considered to affect young to middle-age adults. The aim of this investigation was to study patients who met the criteria for TMJ arthroscopy and to determine whether there was a difference in outcomes between younger and older patients. MATERIALS AND METHODS: This was a retrospective chart review of patients who underwent TMJ operative arthroscopy. The primary variable studied was patient age...
November 9, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27898160/haptic-feedback-improves-surgeons-user-experience-and-fracture-reduction-in-facial-trauma-simulation
#3
Sabine Girod, Sara C Schvartzman, Dyani Gaudilliere, Kenneth Salisbury, Rebeka Silva
Computer-assisted surgical (CAS) planning tools are available for craniofacial surgery, but are usually based on computer-aided design (CAD) tools that lack the ability to detect the collision of virtual objects (i.e., fractured bone segments). We developed a CAS system featuring a sense of touch (haptic) that enables surgeons to physically interact with individual, patient-specific anatomy and immerse in a three-dimensional virtual environment. In this study, we evaluated initial user experience with our novel system compared to an existing CAD system...
2016: Journal of Rehabilitation Research and Development
https://www.readbyqxmd.com/read/27896214/a-case-of-severe-mandibular-retrognathism-with-bilateral-condylar-deformities-treated-with-le-fort-i-osteotomy-and-two-advancement-genioplasty-procedures
#4
Masahiro Nakamura, Takeshi Yanagita, Tatsushi Matsumura, Takashi Yamashiro, Seiji Iida, Hiroshi Kamioka
We report a case involving a young female patient with severe mandibular retrognathism accompanied by mandibular condylar deformity that was effectively treated with Le Fort I osteotomy and two genioplasty procedures. At 9 years and 9 months of age, she was diagnosed with Angle Class III malocclusion, a skeletal Class II jaw relationship, an anterior crossbite, congenital absence of some teeth, and a left-sided cleft lip and palate. Although the anterior crossbite and narrow maxillary arch were corrected by interceptive orthodontic treatment, severe mandibular hypogrowth resulted in unexpectedly severe mandibular retrognathism after growth completion...
November 2016: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/27892493/autologous-temporomandibular-joint-reconstruction-independent-of-exogenous-additives-a-proof-of-concept-study-for-guided-self-generation
#5
Jiao Wei, Tanja Herrler, Dong Han, Kai Liu, Rulin Huang, Markus Guba, Chuanchang Dai, Qingfeng Li
Joint defects are complex and difficult to reconstruct. By exploiting the body's own regenerative capacity, we aimed to individually generate anatomically precise neo-tissue constructs for autologous joint reconstruction without using any exogenous additives. In a goat model, CT scans of the mandibular condyle including articular surface and a large portion of the ascending ramus were processed using computer-aided design and manufacturing. A corresponding hydroxylapatite negative mold was printed in 3D and temporarily embedded into the transition zone of costal periosteum and perichondrium...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27891264/world-s-first-clinical-case-of-gene-activated-bone-substitute-application
#6
I Y Bozo, R V Deev, A Y Drobyshev, A A Isaev, I I Eremin
Treatment of patients with large bone defects is a complex clinical problem. We have initiated the first clinical study of a gene-activated bone substitute composed of the collagen-hydroxyapatite scaffold and plasmid DNA encoding vascular endothelial growth factor. The first patient with two nonunions of previously reconstructed mandible was enrolled into the study. Scar tissues were excised; bone defects (5-14 mm) between the mandibular fragments and nonvascularized rib-bone autograft were filled in with the gene-activated bone substitute...
2016: Case Reports in Dentistry
https://www.readbyqxmd.com/read/27886977/can-submandibular-tracheal-intubation-be-an-alternative-to-tracheotomy-during-surgery-for-major-maxillofacial-fractures
#7
Ahmed Gaber Hassanein, Ahmed M A Abdel Mabood
PURPOSE: During surgery for major maxillofacial fractures, orotracheal intubation can interfere with some surgical procedures and nasal intubation can be contraindicated or impossible. That is why tracheotomy is presented as a solution, although it carries a relatively high incidence of complications. In this study, the use of submandibular tracheal intubation is basically evaluated as an alternative to tracheotomy in such circumstances. MATERIALS AND METHODS: This prospective study was performed in patients undergoing surgery for major maxillofacial fractures in which oral intubation and/or nasal intubation have been unsuitable, impossible, or contraindicated...
November 2, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27885997/the-enhancement-of-osteogenic-capacity-in-a%C3%A2-synthetic-bmp-2-derived-peptide-coated-mineralized-collagen-composite-in-the-treatment-of-the-mandibular-defects
#8
Lei Zhang, Weidong Mu, Shuangfeng Chen, Dawei Yang, Fei Xu, Yaping Wu
The novel synthetic peptide P17-BMP-2 could promote cell attachment and enhance osteogenic capability. A composite, comprising nano-hydroxyapatite, collagen and poly(L-lactide) (nHAC/PLLA), was an efficient scaffold for carrier of P17-BMP-2. Our aim was to investigate whether nHAC/PLLA/P17-BMP-2 accelerates the osteogenesis as a reliable method for mandibular defect healing in this study. The repair capability was assessed by the gross observation, X-ray test and histological observation in four animal experiment groups at 2 week and 4 week after surgery: Group A (control), Group B (nHAC/PLLA treatment), Group C (nHAC/PLLA with 2 mg/g P17-BMP-2 treatment) and Group D (nHAC/PLLA with 10 mg/g P17-BMP-2 treatment)...
November 25, 2016: Bio-medical Materials and Engineering
https://www.readbyqxmd.com/read/27875509/osseous-repair-in-minimally-invasive-reconstruction-of-anterior-skull-base-defects
#9
Vijay R Ramakrishnan, Adam M Terella, Seerat Poonia, Alexander G Chiu, James N Palmer
Management of anterior skull base defects is an area of continued innovation for skull base surgeons. Various grafting materials have been advocated for the repair of skull base defects depending on needs, availability, harvest site morbidity, and surgeon preference. Spontaneous bony closure of small skull defects is known to occur in animal models without bone grafts, but this phenomenon has been unexplored in the human skull base. The objective of this study was to evaluate osseous skull base closure in patients undergoing endoscopic repair of skull base defects...
November 21, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27874959/new-lift-the-art-of-facial-rejuvenation-with-minimal-incisions-rhytidectomy
#10
M Tarallo, M Toscani, G Di Taranto, V Sorvillo, P Fino
OBJECTIVE: The new lift is a procedure for facial rejuvenation with minimal incision, giving the patient a significant improvement of mid face and neck, with limited dissection and minimal scars. A further "One-stitch" of anchorage to the deep temporal fascia is required to hold tissues. By a minimal surgical access, we get a suitable cheek lift with the improvement of nose-labial folds, mandibular edge and neck contour. PATIENTS AND METHODS: Between February 2009 and June 2012, 32 patients underwent facial rejuvenation surgery called new lift at a mean age of 46 years (range 35-55 years)...
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27871617/management-of-cannabis-induced-periodontitis-via-resective-surgical-therapy-a-clinical-report
#11
Fatemeh Momen-Heravi, Philip Kang
BACKGROUND AND OVERVIEW: There is a lack of clinical research on the potential effect of cannabis use on the periodontium as well as its effect on treatment outcomes. The aim of this case report is to illustrate the clinical presentation of periodontal disease in a young woman who was a chronic cannabis user, as well as successful treatment involving motivating the patient to quit cannabis use and undergo nonsurgical and surgical therapy. CASE DESCRIPTION: A 23-year-old woman sought care at the dental clinic for periodontal treatment...
November 18, 2016: Journal of the American Dental Association
https://www.readbyqxmd.com/read/27871294/newly-designed-retentive-posts-of-mandibular-reconstruction-plate-in-oral-cancer-patients-based-on-preliminary-fem-study
#12
Ik Jae Kwon, Mi Young Eo, Sung Jae Park, Soung Min Kim, Jong Ho Lee
BACKGROUND: The reconstruction of a large mandibular defect poses a challenging issue in oral cancer ablation surgery. One popular option for mandibular continuity reconstruction after tumor resection involves the use of a reconstruction plate (R-plate), which maintains space and contour without bone harvesting. An R-plate, however, cannot provide final functional loading rehabilitation with implants or dentures. METHODS: We suggest a new method of functional mandibular reconstruction using retentive posts and an upper prosthesis...
November 21, 2016: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27866699/recording-the-trajectory-of-mouth-opening-and-closing-for-the-fabrication-of-an-occlusal-splint
#13
Jong-Eun Kim, Joo Hyun Kwon, Jee-Hwan Kim, June-Sung Shim
Various attempts have been made to transfer the transverse hinge axis and mandibular movement pattern to the mechanical articulator and to fabricate dental prostheses with the fewest errors. However, the occlusal adjustment of a dental prosthesis is always necessary to ensure a precise intraoral fit even when the facebow transfer technique is used in the cast mounting procedure. This is because the true hinge axis is not obtained when the facebow is applied to a patient who exhibits a variable mandible movement pattern rather than a single rotational axis...
November 17, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27865630/effects-of-co-administered-dexamethasone-and-nimesulide-on-pain-swelling-and-trismus-following-third-molar-surgery-a-randomized-triple-blind-controlled-clinical-trial
#14
J C Barbalho, R J Vasconcellos, H H de Morais, L A M Santos, Rde A Almeida, H L Rêbelo, E E Lucena, S Q de Araújo
This study aimed to determine the effect of the co-administration of dexamethasone 8mg and nimesulide 100mg given 1h before mandibular third molar surgery. A prospective, randomized, triple-blind, split-mouth clinical trial was developed at the study institution in Pernambuco, Brazil. A pilot study was first performed (95% confidence interval, 80% test power, and 5% error), and a sample of 40 patients aged between 18 and 40 years was selected. The patients were randomized and divided into two groups: dexamethasone+placebo and dexamethasone+nimesulide...
November 16, 2016: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27861349/therapeutic-outcomes-of-mandibular-advancement-devices-as-an-initial-treatment-modality-for-obstructive-sleep-apnea
#15
Pona Park, Hyoung Won Jeon, Doo Hee Han, Tae-Bin Won, Dong-Young Kim, Chae-Seo Rhee, Hyun Jik Kim
Although continuous positive airway pressure (CPAP) is a highly efficacious treatment for obstructive sleep apnea (OSA), there is a need for alternative treatment options, such as sleep surgeries and mandibular advancement devices (MADs), to overcome the limitations of CPAP.This study aimed to analyze the therapeutic outcomes of OSA subjects who were treated with a MAD, and to estimate the clinical impact of MAD as a first-line treatment for OSA.Forty-seven patients diagnosed with OSA received an adjustable MAD as an initial treatment...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27861137/computer-assisted-system-on-mandibular-canal-detection
#16
Da-Chuan Cheng, Li-Wei Chen, Yen-Wen Shen, Lih-Jyh Fuh
BACKGROUND: A dentist always checks a patient by using panoramic radiography (PR) initially. The measurement of the minimal distance (MD) between the alveolar crest and the mandibular canal (MC) superior border is critically important before the dental implant surgery, extraction of 3rd molar teeth or any surgery in the posterior area of minimal distance (MD). However, the image of MC is not always clear to identify. OBJECTIVE: A software is needed for training dentists as well as a tool of demonstration to patients in clinics precisely and quickly...
November 18, 2016: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/27858080/-treatment-of-mandibular-angle-fracture-through-intraoral-and-extraoral-approach-a-comparative-study
#17
Bo-Jun Zhang, Wei-Hong Wang, Biao Xu
PURPOSE: To compare the clinical effects of mandibular angle fracture surgery through intraoral and extraoral approach. METHODS: From January 2008 to December 2014, 46 patients with mandibular angle fracture were retrospectively recruited in this study. An intraoral approach was used in 22 cases as group 1 in whom the fractures were fixed by one titanium miniplate alone, the others through an extraoral approach as group 2 in whom the fractures were fixed by two plates...
August 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/27858077/-cone-beam-computed-tomography-evaluation-of-short-and-long-term-airway-changes-in-patients-with-skeletal-class-%C3%A2-malocclusion-treated-by-orthodontic-therapy-and-bimaxillary-surgery-with-or-without-mandibular-setback-surgery
#18
Hong-Wei Wang, Li-Yan Li, Su-Qing Qi, Ming Yan
PURPOSE: To evaluate the short-term and long-term effects of pharyngeal airway in skeletal Class Ⅲ malocclusion patients who underwent bimaxillary surgery or isolated mandibular setback-orthodontic treatment. METHODS: The sample included 54 patients (28 males, 26 females) who were diagnosed with skeletal Class Ⅲ malocclusion. Patents in group A (n=28) underwent mandibular setback surgery and orthodontic treatment. Cone-beam CT (CBCT) was taken at one week before treatment (T0), 6 months (T1) and 3 years after surgery (T2)...
August 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/27857527/primary-hyperparathyroidism-jaw-tumor-syndrome-a-confusing-and-forgotten-diagnosis
#19
Doina Piciu, Andra Piciu, Elena Barbus, Claudiu Pestean, Maria Iulia Larg, Bogdan Fetica
BACKGROUND: Primary hyperparathyroidism is caused by the excessive growth of parathormone secretion, its consequence being hypercalcemia. The parathyroid adenoma is responsible for over half of primary hyperparathyroidism cases. The mandibular tumor can be the initial sign in the case of primary hyperparathyroidism. CASE PRESENTATION: We present the case of a 33 year old patient with history of a mandibular operated tumor, repetitive pathological fractures and hypercalcemia manifestations...
2016: Clujul Medical (1957)
https://www.readbyqxmd.com/read/27843344/the-danish-national-database-for-obstructive-sleep-apnea
#20
Poul Jørgen Jennum, Preben Larsen, Charlotte Cerqueira, Thor Schmidt, Philip Tønnesen
AIM: The aim of the Danish National Database for Obstructive Sleep Apnea (NDOSA) was to evaluate the clinical quality (diagnostic, treatment, and management) for obstructive sleep apnea and obesity hypoventilation syndrome in Denmark using a real-time national database reporting to the Danish National Patient Registry. STUDY POPULATION: All patients diagnosed with obstructive sleep apnea or obesity hypoventilation syndrome at public and private in- and out-hospital departments in Denmark were included...
2016: Clinical Epidemiology
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