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Zygomatic Bone

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1. Zygomatic bone metastasis from hepatocellular carcinoma and the therapeutic efficacy of apatinib: A case report and literature review. (PubMed)

Zygomatic bone metastasis from hepatocellular carcinoma and the therapeutic efficacy of apatinib: A case report and literature review. Hepatocellular carcinoma (HCC) metastases to the zygomatic bone are extremely uncommon, and the treatment of target drugs against such case is unknown.A 48-year-old male patient was admitted to our hospital under suspicion of an advanced liver tumor due to an increase in levels of alpha-fetoprotein (AFP) after radiofrequency ablation for independent nodule (...) by symptomatic treatments. As of last follow-up, the patient is unwell with pain in the face, blurred vision in the right eye, dyscrasia, and exhibited difficulty in opening his mouth.HCC metastases to the zygomatic bone are very aggressive with a very low incidence and immunohistochemistry is useful diagnostic indicators. Still now, there is no optimal treatment strategy for these patients. Apatinib may be a promising drug in the treatment of HCC metastases to the zygomatic bone.

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2019 Medicine

2. Interventions for replacing missing teeth: dental implants in zygomatic bone for the rehabilitation of the severely deficient edentulous maxilla. (PubMed)

Interventions for replacing missing teeth: dental implants in zygomatic bone for the rehabilitation of the severely deficient edentulous maxilla. Dental implants are used for replacing missing teeth. Placing dental implants is limited by the presence of adequate bone volume permitting their anchorage. Several bone augmentation procedures have been developed to solve this problem. Zygomatic implants are long screw-shaped implants developed as a partial or complete alternative to bone (...) augmentation procedures for the severely atrophic maxilla. One to three zygomatic implants can be inserted through the posterior alveolar crest passing through the maxillary sinus, or externally to it, to engage the body of the zygomatic bone. A couple of conventional dental implants may also be needed in the frontal region of the maxilla to stabilise the prosthesis. The potential main advantages of zygomatic implants could be that bone grafting may not be needed and a fixed prosthesis could be fitted

2013 Cochrane

3. Pneumatization of the zygomatic process of temporal bone on computed tomograms (PubMed)

Pneumatization of the zygomatic process of temporal bone on computed tomograms Zygomatic air cells (ZAC) are a variant of temporal bone pneumatization that needs no treatment. However, ZAC can have an impact on surgical procedures in the temporo-mandibular joint region. Recent reports suggest that computed tomography will disclose more ZAC than can be diagnosed on panoramic radiography. The aim of this study was to analyze ZAC prevalence on CT in a population that was not pre-selected (...) to the zygomatic process of the temporal bone that has no volume effect on the shape of the process.ZAC is an anatomical variant of the temporal bone that has come into focus of maxillofacial radiology due to its noticeable aspect on panoramic radiograms. The harmless variant can be expected in about one in thirteen individuals undergoing facial radiology. Panoramic radiograms appear to be sufficient to present ZAC of relevant size. However, in preparation for surgical procedures affecting the articular

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2016 GMS Interdisciplinary plastic and reconstructive surgery DGPW

4. Unusual occurrence of orbital hemangiopericytoma in the zygomatic bone of an adolescent: a case report (PubMed)

Unusual occurrence of orbital hemangiopericytoma in the zygomatic bone of an adolescent: a case report Hemangiopericytoma and solitary fibrous tumor are considered related variants on the same spectrum and both may essentially be the same tumor. They are infrequently encountered in the orbital region while the zygomatic bone is an extremely rare location for these neoplasms to occur.A 14-year-old boy presented with complaint of deformity of left infraorbital area and a firm, regular mass (...) in the region. Orbital CT scan revealed a well-defined round isodense intraosseous lesion in the lowermost portion of the lateral orbital wall (zygomatic bone), expanding the bone and protruding anteriorly and medially. MRI showed the mass to be heterogenous and strongly enhancing with contrast medium. Inferior transconjunctival orbitotomy was performed and the mass was removed. The histopathologic examination and immunohistochemistry staining results (positive for CD34, CD31 and smooth muscle actin

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2018 Eye and Vision

5. Treatment of cryotherapy and orthotopic transplantation following chondromyxoid fibroma of zygomatic bone: A case report. (PubMed)

Treatment of cryotherapy and orthotopic transplantation following chondromyxoid fibroma of zygomatic bone: A case report. Chondromyxoid fibrotherma (CMF) is a rare benign cartilage tumor that occurs more frequently in young males at the age of 20 to 30. It occurs more frequently on long bones, but rarely involves craniofacial bones.This study mainly introduced a 30-year-old male with CMF of zygomatic bone. Single tumor excochleation was conducted initially. However, CMF reoccurred (...) , and then the following steps were adopted: firstly, the tumor was extensively excised; secondly, in vitro tumor excochleation was conducted; thirdly, the excised tumor bone was placed in liquid nitrogen for 3 cycles of cryoablation; finally, the orthotopic transplantation was performed to reconstruct the zygomatic appearance, with satisfactory follow-up efficacy obtained.Orthotopic transplantation after tumorectomy and cryopreservation of tumor bone in liquid nitrogen could lead to excellent therapeutic efficacy

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2018 Medicine

6. A Hemangioma of the Zygomatic Bone: Management Ensuring Good Reconstructive and Aesthetic Results (PubMed)

A Hemangioma of the Zygomatic Bone: Management Ensuring Good Reconstructive and Aesthetic Results Hemangiomas are benign tumors representing only 0.7 to 1% of all bone tumors; those that arise in the zygomatic region are rarely described in the literature. Here, we describe the case of a 55-year-old woman with a mass in the right orbitozygomatic region. She was diagnosed on the basis of preoperative clinical manifestations, data from an earlier histopathological examination, and computed (...) tomography (CT). The CT scan revealed a lesion in the right zygomatic region at the level of the cancellous component. This caused thinning and remodeling of the deformed cortex both medially and laterally. Surgery was performed. We describe the clinical characteristics of our case with an emphasis on surgical management of the lesion using a titanium grid prepared by reference to a stereolithographic model.

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2017 Craniomaxillofacial trauma & reconstruction

7. The Edinburgh modification of the minimal access zygomatic osteotomy, used for the correction of zygomatic orbital hypoplasia. (PubMed)

to the zygomatic osteotomy. This is performed through local incisions and a bone cut made using hand-held diamond-coated wire that mobilizes the entire zygoma.Crown Copyright © 2017. Published by Elsevier Ltd. All rights reserved. (...) The Edinburgh modification of the minimal access zygomatic osteotomy, used for the correction of zygomatic orbital hypoplasia. Zygomatic hypoplasia can be an exceedingly difficult proposition for the surgeon treating facial deformity. The classical approach would be a coronal access, which is time-consuming, leaves a long scar on the scalp that shows in patients with balding patterns, and carries the risk of permanent facial weakness. The Edinburgh technique presents a minimal access approach

2017 International Journal of Oral and Maxillofacial Surgery

8. An Anatomical Study of Maxillary-Zygomatic Complex Using Three-Dimensional Computerized Tomography-Based Zygomatic Implantation (PubMed)

of frontal process of zygomatic bone close to the lateral orbital wall. The distances between IA and zygomatic nerve in 53 sides were shorter than 2 mm.The simulating zygomatic implantation on cadaver skulls and 3D-CT imaging provided useful anatomical data of the maxillary-zygomatic complex. It is necessary to take care to avoid the zygomatic nerve injury during implantation, because it frequently appears on the route of implantation. (...) An Anatomical Study of Maxillary-Zygomatic Complex Using Three-Dimensional Computerized Tomography-Based Zygomatic Implantation To obtain anatomical data of maxillary-zygomatic complex based on simulating the zygomatic implantation using cadaver heads and three-dimensional computerized tomography (3D-CT).Simulating zygomatic implantation was performed using seven cadaver heads and 3D-CT images from forty-eight adults. After measuring the maxillary-zygomatic complex, we analyzed the position

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2017 BioMed research international

9. Simplifying the Treatment of Bone Atrophy in the Posterior Regions: Combination of Zygomatic and Wide-Short Implants—A Case Report with 2 Years of Follow-Up (PubMed)

Simplifying the Treatment of Bone Atrophy in the Posterior Regions: Combination of Zygomatic and Wide-Short Implants—A Case Report with 2 Years of Follow-Up The rehabilitation of maxillary and mandibular bone atrophy represents one of the main challenges of modern oral implantology because it requires a variety of procedures, which not only differ technically, but also differ in their results. In the face of limitations such as deficiencies in the height and thickness of the alveolar (...) structure, prosthetic rehabilitation has sought to avoid large bone reconstruction through bone grafting; this clinical behavior has become a treatment system based on evidence from clinical scientific research. In the treatment of atrophic maxilla, the use of zygomatic implants has been safely applied as a result of extreme technical rigor and mastery of this surgical skill. For cases of posterior mandibular atrophy, short implants with a large diameter and a combination of short and long implants have

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2016 Case reports in dentistry

10. Zygomatic Bone

Zygomatic Bone Zygomatic Bone Toggle navigation Brain Head & Neck Chest Endocrine Abdomen Musculoskeletal Skin Infectious Disease Hematology & Oncology Cohorts Diagnostics Emergency Findings Procedures Prevention & Management Pharmacy Resuscitation Trauma Emergency Procedures Ultrasound Cardiovascular Emergencies Lung Emergencies Infectious Disease Pediatrics Neurologic Emergencies Skin Exposure Miscellaneous Abuse Cancer Administration 4 Zygomatic Bone Zygomatic Bone Aka: Zygomatic Bone II (...) . Anatomy Lewis (1918) Gray's Anatomy 20th ed (in at or ) Lewis (1918) Gray's Anatomy 20th ed (in at or ) Lewis (1918) Gray's Anatomy 20th ed (in at or ) Images: Related links to external sites (from Bing) These images are a random sampling from a Bing search on the term "Zygomatic Bone." Click on the image (or right click) to open the source website in a new browser window. Related Studies (from Trip Database) Ontology: Zygomatic bone (C0043539) Definition (NCI) Occurring in, or located

2018 FP Notebook

11. Developmental and Evolutionary Significance of the Zygomatic Bone (PubMed)

Developmental and Evolutionary Significance of the Zygomatic Bone The zygomatic bone is derived evolutionarily from the orbital series. In most modern mammals the zygomatic bone forms a large part of the face and usually serves as a bridge that connects the facial skeleton to the neurocranium. Our aim is to provide information on the contribution of the zygomatic bone to variation in midfacial protrusion using three samples; humans, domesticated dogs, and monkeys. In each case, variation (...) in midface protrusion is a heritable trait produced by one of three classes of transmission: localized dysmorphology associated with single gene dysfunction, selective breeding, or long-term evolution from a common ancestor. We hypothesize that the shape of the zygomatic bone reflects its role in stabilizing the connection between facial skeleton and neurocranium and consequently, changes in facial protrusion are more strongly reflected by the maxilla and premaxilla. Our geometric morphometric analyses

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2016 Anatomical record (Hoboken, N.J. : 2007)

12. Evaluation of patients undergoing placement of zygomatic implants using sinus slot technique (PubMed)

on the periimplant tissues. Radiographs showed satisfactory bone levels in conventional implants of oral rehabilitation with zygomatic implants and a good positioning of the apex of the zygomatic implants in relation to the zygomatic bone. The tomographic findings revealed no characteristics of sinus disease. There were no cases of obstruction of the maxillary sinus ostium.The placement of zygomatic implants by Stella and Warner's technique proved to be a predictable technique with high implant survival rate (...) Evaluation of patients undergoing placement of zygomatic implants using sinus slot technique This study aimed to evaluate patients undergoing placement of zygomatic implants by Stella and Warner's technique, considering the survival rate of conventional and zygomatic implants, and assess the health of the maxillary sinuses and the level of patient satisfaction.In this retrospective cohort study, 28 patients had received a combination of conventional and zygomatic implants (group I) and 14 were

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2016 International journal of implant dentistry

13. Stresses generated by two zygomatic implant placement techniques associated with conventional inclined anterior implants (PubMed)

of the central incisor, simulating the occlusal load during mastication, in a total of 150 N.The extramaxillary technique presented considerable variation in increased tension on the prosthesis screws and bone tissue. In the exteriorized technique, the highest tension values occurred in the region of the ridge, and the lowest, on the zygomatic process; the absence of cantilever reduced the stress on bone tissue in almost all regions.The exteriorized technique was shown to be more favorable (...) to the distribution of stresses on the micro-unit screws and bone tissue, with the model with zygomatic implant placed in the region of the first molar and inclined anterior implant presenting the best results.

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2018 Annals of Medicine and Surgery

14. Developmental constraint through negative pleiotropy in the zygomatic arch (PubMed)

Developmental constraint through negative pleiotropy in the zygomatic arch Previous analysis suggested that the relative contribution of individual bones to regional skull lengths differ between inbred mouse strains. If the negative correlation of adjacent bone lengths is associated with genetic variation in a heterogeneous population, it would be an example of negative pleiotropy, which occurs when a genetic factor leads to opposite effects in two phenotypes. Confirming negative pleiotropy (...) and determining its basis may reveal important information about the maintenance of overall skull integration and developmental constraint on skull morphology.We identified negative correlations between the lengths of the frontal and parietal bones in the midline cranial vault as well as the zygomatic bone and zygomatic process of the maxilla, which contribute to the zygomatic arch. Through gene association mapping of a large heterogeneous population of Diversity Outbred (DO) mice, we identified

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2018 EvoDevo

15. Anatomical Thin Titanium Mesh Plate Structural Optimization for Zygomatic-Maxillary Complex Fracture under Fatigue Testing (PubMed)

Anatomical Thin Titanium Mesh Plate Structural Optimization for Zygomatic-Maxillary Complex Fracture under Fatigue Testing This study performs a structural optimization of anatomical thin titanium mesh (ATTM) plate and optimal designed ATTM plate fabricated using additive manufacturing (AM) to verify its stabilization under fatigue testing. Finite element (FE) analysis was used to simulate the structural bending resistance of a regular ATTM plate. The Taguchi method was employed to identify (...) height to be 10 mm. The designed plate thickness factor primarily dominated the bending resistance up to 78% importance. The averaged micromotion (displacement) and strain of the maxillary bone showed that ZMC fracture fixation using the miniplate was significantly higher than those using the AM optimal designed ATTM plate. This study concluded that the optimal designed ATTM plate with enough strength to resist the bending effect can be obtained by combining FE and Taguchi analyses. The optimal

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2018 BioMed research international

16. Evaluation of Distal Movement of Maxillary Dentition With Zygomatic Miniplates Using Cone Beam Computed Tomography

Evaluation of Distal Movement of Maxillary Dentition With Zygomatic Miniplates Using Cone Beam Computed Tomography Evaluation of Distal Movement of Maxillary Dentition With Zygomatic Miniplates Using Cone Beam Computed Tomography - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number (...) of saved studies (100). Please remove one or more studies before adding more. Evaluation of Distal Movement of Maxillary Dentition With Zygomatic Miniplates Using Cone Beam Computed Tomography The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our for details. ClinicalTrials.gov Identifier: NCT03467555 Recruitment Status : Active, not recruiting First

2018 Clinical Trials

17. Adequacy of One Point Fixation of Displaced Zygomatic Complex Fracture

Years to 65 Years (Child, Adult, Older Adult) Sexes Eligible for Study: All Accepts Healthy Volunteers: No Criteria Inclusion Criteria: Patients' age range from 15-65 years. Patients with unilateral zygomatic complex fracture Displaced fracture Dentulous or edentulous patients. Patients should be free from any systemic disease that may affect normal healing of bone and predictable outcome. Exclusion Criteria. Patients with systemic diseases as history of radiation therapy or chemotherapy (...) Posted: April 2, 2018 Last Update Posted: April 2, 2018 Last Verified: March 2018 Layout table for additional information Studies a U.S. FDA-regulated Drug Product: No Studies a U.S. FDA-regulated Device Product: No Additional relevant MeSH terms: Layout table for MeSH terms Fractures, Bone Zygomatic Fractures Wounds and Injuries Maxillofacial Injuries Facial Injuries Craniocerebral Trauma Trauma, Nervous System Nervous System Diseases Skull Fractures

2018 Clinical Trials

18. Oral Rehabilitation of Oral Cancer Patients Using Zygomatic Implant-Supported Maxillary Prostheses with Magnetic Attachment: Three Case Reports (PubMed)

Oral Rehabilitation of Oral Cancer Patients Using Zygomatic Implant-Supported Maxillary Prostheses with Magnetic Attachment: Three Case Reports Maxillectomy for malignant tumor often results in a maxillary defect and serious oral dysfunction. A prosthesis is usually provided for postoperative oral rehabilitation of such patients with maxillary defects. However, the further the resected region extends, the less stable the prosthesis becomes, due to insufficient bone and tooth support. Therefore (...) , in many cases, conventional resection dentures may not be adequate to restore the oral function. Effective utilization of dental and zygomatic implants may help to restore oral function in patients with severe maxillary defects. This clinical report describes the management of three patients with severe maxillary defects following cancer ablative surgery who were rehabilitated using maxillary prostheses with magnetic attachments supported by dental and zygomatic implants. Occlusal reconstruction

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2018 Case reports in dentistry

19. Single piece fronto-temporo-orbito-zygomatic craniotomy: a personal experience and review of surgical technique. (PubMed)

Single piece fronto-temporo-orbito-zygomatic craniotomy: a personal experience and review of surgical technique. Fronto-Temporo-Orbito-Zygomatic (FTOZ) craniotomy has progressed from its humble beginnings. Numerous variations including one piece, two piece and even three piece FTOZ craniotomies have been described. The ideal technique still remains elusive and its use remains restricted to a few specialised centres even when benefits far outweigh the surgical difficulties.To analyse 11 cases (...) of single piece of bone. It provides a wide, multidirectional access to skull base. Lesions become shallow and their access easier. Benefits far outweigh the difficulties if any, and its use should be encouraged even at centres outside of the specialised units.

2018 British Journal of Neurosurgery

20. Immediately loaded zygomatic implants vs conventional dental implants in augmented atrophic maxillae: 1-year post-loading results from a multicentre randomised controlled trial. (PubMed)

Immediately loaded zygomatic implants vs conventional dental implants in augmented atrophic maxillae: 1-year post-loading results from a multicentre randomised controlled trial. To compare the clinical outcome of immediately loaded cross-arch maxillary prostheses supported by zygomatic implants vs conventional implants placed in augmented bone.In total, 71 edentulous patients with severely atrophic maxillas without sufficient bone volumes for placing dental implants, or when it was possible (...) to place only two implants in the anterior area (minimal diameter 3.5 mm and length of 8 mm) and less than 4 mm of bone height subantrally, were randomised according to a parallel group design to receive zygomatic implants (35 patients) to be loaded immediately vs grafting with a xenograft, followed after 6 months of graft consolidation by placement of six to eight conventional dental implants submerged for 4 months (36 patients). For immediate loading, zygomatic implants had to be inserted

2018 European journal of oral implantology Controlled trial quality: predicted high

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