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Mandibular fractures

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https://www.readbyqxmd.com/read/29343898/assessment-of-temporomandibular-joint-dysfunction-in-condylar-fracture-of-the-mandible-using-the-helkimo-index
#1
S Suhas, Sharad Ramdas, P P Lingam, H R Naveen Kumar, Aashish Sasidharan, R Aadithya
Introduction: Condylar fractures of the mandible are functionally important fractures as the condyle of the mandible being a part of the temporomandibular joint (TMJ) and can lead to TMJ dysfunction if not properly treated. Materials and Methods: This was a cross-sectional study of a total of 33 treated patients with fracture of the mandibular condyle who underwent examination as per the Helkimo index. Their dysfunction was quantified and clinicoepidemiological characteristics were assessed...
May 2017: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/29339001/does-the-surgical-approach-for-treating-mandibular-condylar-fractures-affect-the-rate-of-seventh-cranial-nerve-injuries-a-systematic-review-and-meta-analysis-based-on-a-new-classification-for-surgical-approaches
#2
Essam Ahmed Al-Moraissi, Aurélien Louvrier, Giacomo Colletti, Larry M Wolford, Federico Biglioli, Marwa Ragaey, Christophe Meyer, Edward Ellis
PURPOSE: The purpose of this study was to determine the rate of facial nerve injury (FNI) when performing (ORIF) of mandibular condylar fractures by different surgical approaches. MATERIALS AND METHODS: A systematic review and meta-analysis were performed that included several databases with specific keywords, a reference search, and a manual search for suitable articles. The inclusion criteria were all clinical trials, with the aim of assessing the rate of facial nerve injuries when (ORIF) of mandibular condylar fractures was performed using different surgical approaches...
November 14, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29314144/bone-augmentation-followed-by-implant-surgery-in-the-edentulous-mandible-a-systematic-review
#3
REVIEW
R J de Groot, M A E M Oomens, T Forouzanfar, E A J M Schulten
INTRODUCTION: Long-standing loss of natural teeth in the mandible can lead to severe jaw atrophy and even mandibular fracture. There is no consensus on the best preprosthetic surgical treatment to reconstruct the atrophic edentulous mandible. The purpose of this review is to provide an overview of the existing literature and to give an evidence-based recommendation for bone grafting and future research. MATERIALS AND METHODS: This systematic review was conducted according to the PRISMA statement...
January 4, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29311022/three-dimensional-titanium-miniplates-for-fixation-of-subcondylar-mandibular-fractures-comparison-of-five-designs-using-patient-specific-finite-element-analysis
#4
Mhd Hassan Albogha, Yoshihide Mori, Ichiro Takahashi
PURPOSE: The purpose of the current study is to compare the performance of five designs of three-dimensional titanium miniplates (lambda, strut, delta, rhombic and trapezoid) for fixation of subcondylar mandibular fracture. MATERIALS AND METHODS: Three-dimensional models were constructed for the five miniplates with their screws and integrated into a virtually fractured mandible that was derived from a computed tomographic image of living human. Patient-specific finite element models were analyzed to compare the performances of the miniplates...
December 26, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29310844/modification-of-the-measurement-of-the-major-variables-in-mandibular-condylar-fractures-angulation-of-sidewards-displacement-and-shortening-of-the-height-of-the-ramus
#5
S P Chang, Y Yang, L Q Shi, Y W Liu, Y Liu, Q Ma
Our aim was to improve the accuracy of measurement of the angulation and the shortening of the height of the ramus in fractures of the mandibular condyle using modified methods. We analysed spiral computed tomography (CT) of 67 unilateral fractures with the OsiriX v 5.0 (©Pixmeo Sarl) and Mimics 19.0 (©2016 Materialise NV, Belgium) and analysed them with SPSS (version 24.0, IBM® SPSS®). Angulation was measured using both the traditional method and our modified method. The results showed significant difference (p = 0...
January 5, 2018: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29310359/natural-teeth-retained-splint-based-on-a-patient-specific-3d-printed-mandible-used-for-implant-surgery-and-vestibuloplasty-a-case-report
#6
Helin Xing, Jinshuang Wu, Lei Zhou, Sefei Yang
RATIONALE: With respect to improving the quality of oral rehabilitation, the management of keratinized mucosa is as important as bone condition for implant success. To enhance this management, a natural teeth-retained splint based on a patient-specific 3-dimensional (3D) printed mandible was used in vestibuloplasty to provide sufficient keratinized mucosa around dental implants to support long-term implant maintenance. PATIENT CONCERNS: A 28-year-old male patient had a fracture of the anterior andible 1 year ago, and the fracture was treated with titanium...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29303857/reconstruction-of-a-compound-oromandibular-defect-by-means-of-chimeric-scapular-parascapular-free-flap-assisted-by-virtual-surgical-planning
#7
Josué Hernando, Antonio Aguilar-Salvatierra, Ignacio Osoitz Leizaola-Cardesa, Juan Antonio Rad, Amaya Vicuña, Rafael Gómez, Javier Martín, Gerardo Gómez-Moreno
BACKGROUND: Reconstruction of an oromandibular defect presents a considerable surgical challenge. But since the advent of microvascularized free flap reconstructive surgery, outcomes have improved significantly so that today almost any defect may be reconstructed. Recently, virtual surgical planning has reduced surgical time, the morbidity associated with surgery, and surgical precision. OBJECTIVE: This article reports a complex patient with a composite oromandibular defect...
January 4, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29303128/biomechanical-comparison-of-transoral-and-transbuccal-lateral-cortical-plate-fixation-for-the-management-of-mandibular-angle-fractures
#8
M M Omezli, F Ayranci, M E Polat, E Dayi, H Ghahramanzadehasl, S Karagol
OBJECTIVES: The purpose of this experimental study was to compare the biomechanical behaviors of two different types of osteosynthesis that are used in the treatment of mandibular angle fractures. MATERIALS AND METHODS: Twenty synthetic polyurethane human mandible replicas, with medullar and cortical portions, were used in this study. These polyurethane hemimandibles were randomly divided into two groups (n = 10). The transbuccal group (Group A) was fixed with 7 mm long self-tapping 2...
November 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29302682/complications-and-reoperations-in-mandibular-angle-fractures
#9
Collin L Chen, Joseph Zenga, Ruchin Patel, Gregory Branham
Importance: Mandible angle fractures can be repaired in a variety of ways, with no consensus on the outcomes of complications and reoperation rates. Objectives: To analyze patient, injury, and surgical factors, including approach to the angle and plating technique, associated with postoperative complications, as well as the rate of reoperation with regard to mandible angle fractures. Design, Setting, and Participants: Retrospective cohort study analyzing the surgical outcomes of patients with mandible angle fractures between January 1, 2000, and December 31, 2015, who underwent open reduction and internal fixation...
January 4, 2018: JAMA Facial Plastic Surgery
https://www.readbyqxmd.com/read/29301317/correction-of-malocclusion-by-botulinum-neurotoxin-injection-into-masticatory-muscles
#10
REVIEW
Hyun Seok, Seong-Gon Kim
Botulinum toxin (BTX) is a neurotoxin, and its injection in masticatory muscles induces muscle weakness and paralysis. This paralytic effect of BTX induces growth retardation of the maxillofacial bones, changes in dental eruption and occlusion state, and facial asymmetry. Using masticatory muscle paralysis and its effect via BTX, BTX can be used for the correction of malocclusion after orthognathic surgery and mandible fracture. The paralysis of specific masticatory muscles by BTX injection reduces the tensional force to the mandible and prevents relapse and changes in dental occlusion...
January 2, 2018: Toxins
https://www.readbyqxmd.com/read/29299188/prevention-of-neurological-injuries-during-mandibular-third-molar-surgery-technical-notes
#11
Gerardo La Monaca, Iole Vozza, Rita Giardino, Susanna Annibali, Nicola Pranno, Maria Paola Cristalli
Surgery to the mandibular third molar is common, and injuries to the inferior alveolar nerve and the lingual nerve are well-recognized complications of this procedure. The aim of these technical notes is to describe operative measures for reducing neurological complications during mandibular third molar surgery. The following procedure should be used to prevent damage to the inferior alveolar nerve: a well-designed mucoperiosteal flap, to obtain appropriate access to the surgical area; a conservative ostectomy on the distal and distal-lingual side; tooth sectioning, to facilitate its removal by decreasing the retention zones; tooth dislocation in the path of withdrawal imposed by the curvature of the root apex; and careful socket debridement, when the roots of the extracted tooth are in intimate contact with the mandibular canal...
April 2017: Annali di Stomatologia
https://www.readbyqxmd.com/read/29296116/a-new-method-for-surgical-treatment-of-subcondylar-fractures-a-case-report
#12
Gholamreza Shirani, Mahnaz Arshad, Kamran Rasouli, Touraj Vaezi
Subcondylar fractures are common in the maxillofacial region following direct trauma to the mandibular ramus. The literature is replete with articles written on the treatment of subcondylar fractures, encompassing a plethora of various surgical approaches; however, the best treatment procedure has remained controversial. Such fractures are either treated by open reduction with internal fixation or closed reduction with maxillomandibular fixation. In this article, we describe a new surgical method for treatment of subcondylar fractures...
September 2017: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/29288505/bone-response-to-functionally-loaded-two-piece-zirconia-implants-a-preclinical-histometric-study
#13
Simone F M Janner, Michael Gahlert, Dieter D Bosshardt, Stefan Roehling, Stefan Milz, Frank Higginbottom, Daniel Buser, David L Cochran
OBJECTIVE: To evaluate the bone response to a two-piece zirconia implant in comparison with a control titanium implant in the canine mandible 4 and 16 weeks after restoration. MATERIAL AND METHODS: Zirconia and titanium implants were alternately placed bilaterally in healed mandibular molar and premolar sites of five canines. Full-ceramic single-tooth restorations were cemented after 6 weeks of transmucosal healing, allowing for full functional loading of the implants...
December 30, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29288289/anterolateral-thigh-flap-combined-with-reconstruction-plate-versus-double-free-flaps-for-composite-mandibular-reconstruction-a-propensity-score-matched-study
#14
Anaeze C Offodile, Jennifer An-Jou Lin, Kai-Ping Chang, Mohamed Abdelrahman, Hao-Wei Kou, Charles Yuen Yung Loh, Mario A Aycart, Huang-Kai Kao
OBJECTIVE: This study was designed to examine the comparative effectiveness of oromandibular defect reconstruction via anterolateral thigh flap and bridging plate (ALT only) versus simultaneous soft tissue and vascularized bone flap (DFF), with regards to long-term plate exposure and complications. METHODS: A propensity score-matched analysis of patients with an oncologic head and neck defect who underwent microvascular reconstruction was performed. Two surgical groups, i...
December 30, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29279761/load-bearing-capacity-of-various-cad-cam-monolithic-molar-crowns-under-recommended-occlusal-thickness-and-reduced-occlusal-thickness-conditions
#15
Sulki Choi, Hyung-In Yoon, Eun-Jin Park
PURPOSE: The goal of this study was to evaluate the fracture resistances of various monolithic crowns fabricated by computer-aided design and computer-aided manufacturing (CAD/CAM) with different thickness. MATERIALS AND METHODS: Test dies were fabricated as mandibular molar forms with occlusal reductions using CAD/CAM. With different occlusal thickness (1.0 or 1.5 mm), a polymer-infiltrated ceramic network (Enamic, EN), and zirconia-reinforced lithium silicate (Suprinity, SU and Celtra-Duo, CD) were used to fabricate molar crowns...
December 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/29279760/fracture-load-and-survival-of-anatomically-representative-monolithic-lithium-disilicate-crowns-with-reduced-tooth-preparation-and-ceramic-thickness
#16
Noor A Nawafleh, Muhanad M Hatamleh, Andreas Öchsner, Florian Mack
PURPOSE: To investigate the effect of reducing tooth preparation and ceramic thickness on fracture resistance of lithium disilicate crowns. MATERIALS AND METHODS: Specimen preparation included a standard complete crown preparation of a typodont mandibular left first molar with an occlusal reduction of 2 mm, proximal/axial wall reduction of 1.5 mm, and 1.0 mm deep chamfer (Group A). Another typodont mandibular first molar was prepared with less tooth reduction: 1 mm occlusal and proximal/axial wall reduction and 0...
December 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/29275853/fractographic-analysis-of-a-split-tooth-presenting-radiographically-as-a-horizontal-root-fracture-in-an-unrestored-mandibular-second%C3%A2-molar
#17
Unni Krishnan, Alex Moule, Shaji Michael, Michael Swain
INTRODUCTION: Spontaneously catastrophic fracture of intact unrestored molar teeth is not common. Nevertheless, cracks do occur that progress apically, resulting in the complete splitting of the tooth and root. This report describes a catastrophic fracture that occurred in an unrestored mandibular second molar resulting in a previously unreported combination of a longitudinal and horizontal root fracture, appearing radiographically as a single horizontal root fracture. METHODS: Tooth fragments were examined clinically, stereoscopically, and by scanning electron microscopy...
December 21, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29274951/correlation-between-the-posterior-mandibular-width-and-the-lingual-gap-caused-by-symphyseal-fractures-using-a-virtual-model
#18
Christian Pedemonte Trewhela, Andrea Carmona Avendaño, Edgardo González Mora, Ilich Vargas Farren, Francisco Lopetegui Caceres, Erick Rojas Quiroz
PURPOSE: The objective was to determine the dimensional impact, on the occlusal and articular level, of the gap produced in the lingual plate from symphyseal fractures, correlated with the dimensional change in the posterior mandibular width. MATERIALS AND METHODS: We performed an observational experimental study based on 30 computed tomography scans of patients treated by the Maxillofacial Surgery Service, Hospital Clínico Mutual de Seguridad, Santiago, Chile, between 2012 and 2016...
December 7, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29274311/endoscopic-assisted-treatment-combined-with-transoral-and-transbuccal-approach-to-mandibular-subcondylar-fractures
#19
Osman Akdag, Gokce Yildiran, Malik Abaci, Zekeriya Tosun
PURPOSE: Endoscopic treatment of maxillofacial fractures is a different way of performing open reduction and internal fixation. This report presents a case series of mandibular subcondylar fractures performed with combined endoscopic transoral and transbuccal approaches and the results. MATERIALS AND METHODS: Sixteen patients with mandibular condylar fractures were preoperatively assessed for risk and underwent open reduction and internal fixation with the endoscope-assisted transoral approach...
December 5, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29273194/evaluation-of-clinical-and-radiographic-indices-as-predictors-of-osteoporotic-fractures-a-10-year-longitudinal-study
#20
Grethe B Jonasson, Valter Sundh, Magnus Hakeberg, Margareta Ahlqwist, Lauren Lissner, Dominique Hange
OBJECTIVES: The aim of the study was to evaluate 2 radiographic and 3 clinical indices as predictors of future osteoporotic fractures. STUDY DESIGN: In a prospective, longitudinal study with a 10-year fracture follow-up, the 2 radiographic indices mandibular cortical erosion (normal, mild/moderate erosion, and severe erosion of the inferior cortex) and cortex thickness were assessed using panoramic radiographs of 411 women, age 62 to 78 years. The clinical indices were the fracture assessment tool FRAX, the osteoporosis index of risk (OSIRIS), and the osteoporosis self-assessment tool (OST)...
November 21, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
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