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Maxillary reconstruction

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https://www.readbyqxmd.com/read/29329558/quality-of-life-and-problems-associated-with-obturators-of-patients-with-maxillectomies
#1
Marwa Mohammed Ali, Nadia Khalifa, Mohammed Nasser Alhajj
BACKGROUND: Maxillary defects predispose patients to different undesirable effects. The aim of this study was to assess the quality of life (QoL) of patients with maxillary defects (acquired/congenital) wearing obturators. METHODS: The study comprised 30 patients aged between 16 and 78 years. Interviews were conducted to collect information pertaining to patients; sociodemographic, self-reported function of obturator using Obturator Functioning Scale (OFS), self-evaluation of general health using Visual Analogue Scale (VAS), radiotherapy treatment, salivary gland removal, reconstructive surgery, neck dissection and length of time obturators were worn...
January 5, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/29319787/dorsal-preservation-the-push-down-technique-reassessed
#2
Yves Saban, Rollin K Daniel, Roberto Polselli, Maria Trapasso, Peter Palhazi
Management of the nasal dorsum remains a challenge in rhinoplasty surgery. Currently, the majority of reduction rhinoplasties results in destruction of the keystone area (K-area), which requires reconstruction with either spreader grafts or spreader flaps, both for aesthetic and functional reasons. This article will present the senior author's current operative technique for dorsal preservation in reduction rhinoplasty based on 320 clinical cases performed over a 5-year period. The author's operative technique is as follows: (1) endonasal approach; (2) removal of a septal strip in the subdorsal area whose shape and height were determined preoperatively; (3) complete lateral, transverse, and radix osteotomies; and (4) dorsal reduction utilizing either a push down operation (PDO) or a let down operation (LDO)...
January 8, 2018: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29315066/-autotransplantation-of-a-maxillary-incisor-and-orthodontic-care-a-case-study
#3
Valentine Charpentier, Masrour Makaremi, François de Brondeau
INTRODUCTION: Severely impacted teeth with atypical root anatomy do not respond well to orthodontic traction after surgical exposure. Consequently, they are often removed, but replacing them with dental prostheses can prove difficult in patients who are still growing. Thus, autotransplantation seems to be the only way to preserve a natural tooth and the alveolar bone. MATERIALS AND METHODS: An upper central incisor impacted in the region of the nasal cavities with an open apex was diagnosed in an 8...
December 2017: L' Orthodontie Française
https://www.readbyqxmd.com/read/29311578/promoting-induced-pluripotent-stem-cell-driven-biomineralization-and-periodontal-regeneration-in-rats-with-maxillary-molar-defects-using-injectable-bmp-6-hydrogel
#4
Ke-Hung Chien, Yuh-Lih Chang, Mong-Lien Wang, Jen-Hua Chuang, Ya-Chi Yang, Ming-Cheng Tai, Chien-Ying Wang, Yung-Yang Liu, Hsin-Yang Li, Jiang-Torng Chen, Shou-Yen Kao, Hen-Li Chen, Wen-Liang Lo
Periodontal disease may cause considerable destruction of alveolar bone, periodontal ligaments (PDLs) and cementum and even lead to progressive oral dysfunction. Periodontal tissue regeneration is the ultimate goal of periodontal disease treatment to reconstruct both structures and functions. However, the regenerative efficiency is low, possibly due to the lack of a proper periodontal microenvironment. In this study, we applied an injectable and thermosensitive chitosan/gelatin/glycerol phosphate hydrogel to provide a 3D environment for transplanted stem cells and to enhance stem cell delivery and engraftment...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29284902/elongated-miofascial-temporal-flap-in-comparison-with-standard-surgical-procedure-of-temporal-muscle-reconstruction
#5
Dino Dizdarevic, Tarik Masic, Edi Muslic
Introduction: Flap of the temporal muscle (m. temporalis) with its natural position, its mass and its length, compared with other bound and free microvascular flaps, is the method of choice for covering the middle part of the face after the removal of large tumor masses. Material: The study included a sample of 36 patients who were surgically treated due to malignant process at the middle face level with the performed partial, total or bilateral maxillectomy at the Clinic for Maxillofacial Surgery, University Clinical Center in Sarajevo...
October 2017: Medical Archives
https://www.readbyqxmd.com/read/29283207/hard-tissue-volume-stability-of-guided-bone-regeneration-during-the-healing-stage-in-the-anterior-maxilla-a-clinical-and-radiographic-study
#6
Xi Jiang, Yu Zhang, Ping Di, Ye Lin
BACKGROUND: Guided bone regeneration (GBR) is currently the most widely used technique to reconstruct localized peri-implant bone defects. OBJECTIVES: To evaluate hard tissue volume stability during the healing stage of GBR with particulate bone graft and resorbable collagen membrane. MATERIALS AND METHODS: Twenty-eight patients who were missing a single maxillary incisor and required implant placement combined with GBR were randomly assigned to 2 groups: submerged (n = 14) and transmucosal (n = 14) healing groups...
December 28, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29275300/three-dimensional-printing-based-reconstruction-of-a-maxillary-bone-defect-in-a-dog-following-tumor-removal
#7
Se Eun Kim, Kyung Mi Shim, Kwangsik Jang, Jin-Hyung Shim, Seong Soo Kang
Three-dimensional (3D) printing has been applied extensively not only in human, but also veterinary medicine. However, the technique is still used in the clinical area for a surgical plan or education prior to surgery. Thus, we report a case of reconstruction after tumor removal surgery with the use of a 3D-printed scaffold. A 12-year-old female mixed dog had a left caudal maxillary mass. Based on computed tomography images, a defect was confirmed on the maxillary bone due to the oral mass, and a surgical plan was designed to remove the oral mass and graft the 3D printed scaffold...
January 2018: In Vivo
https://www.readbyqxmd.com/read/29258778/effects-of-deep-sedation-under-mechanical-ventilation-on-cognitive-outcome-in-patients-undergoing-surgery-for-oral-and-maxillofacial-cancer-and-microvascular-reconstruction
#8
Y Terada, S Inoue, M Konda, J Egawa, J Ueda, T Kirita, M Kawaguchi
OBJECTIVE: Cognitive impairment after intensive care unit (ICU) admission is becoming increasingly recognized. High-dose deep sedation has been suggested to play an important role in the development of cognitive impairment. However, the impact of heavy sedation as a single cause in the development of cognitive impairment in ICU patients remains unclear. In this study we investigated whether a three-day deep sedation protocol could reduce cognitive function in mechanically ventilated non-critical patients...
December 16, 2017: Medicina Intensiva
https://www.readbyqxmd.com/read/29229072/the-role-of-subepithelial-connective-tissue-graft-for-reconstruction-of-interdental-papilla-clinical-study
#9
Ena Sharma, Anuj Sharma, Kamaljit Singh
BACKGROUND: The ideal goal of periodontal therapy is regeneration of the lost periodontium. However regeneration of the lost interdental papilla has been elusive. Therefore the ability of rebuilding lost papillae in the maxillary segment has become one of the major challenges in periodontal plastic surgery. OBJECTIVES OF THE STUDY: To evaluate the success and predictability of surgical technique using a sub epithelial connective tissue graft interposed in a coronally displaced flap to reconstruct the lost interdental papillae...
December 2017: Singapore Dental Journal
https://www.readbyqxmd.com/read/29227324/three-dimensional-evaluation-on-the-effect-of-maxillary-dentition-distalization-with-miniscrews-implanted-in-the-infrazygomatic-crest
#10
Xiaoxue Wu, Haibo Liu, Chen Luo, Yonggang Li, Yin Ding
OBJECTIVE: To evaluate the effect of the maxillary dentition distalization with miniscrews implanted in the infrazygomatic (IZ) crest with 3D reconstruction module from cone-beam computed tomography (CBCT). METHODS: Twenty patients who previously underwent dentition distalization treatment with miniscrews were recruited. A total of 40 images were obtained using CBCT, taken immediately before placement of the miniscrew anchorage and at the end of distalization. The 3D-line measurements were recorded to monitor dental changes...
December 7, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/29223639/extensive-phenotyping-of-the-orofacial-and-dental-complex-in-crouzon-syndrome
#11
Alexander Khominsky, Robin Yong, Sarbin Ranjitkar, Grant Townsend, Peter J Anderson
OBJECTIVES: Fibroblast growth factor receptor 2 (FGFR2) C342Y/+ mutation is a known cause of Crouzon syndrome that is characterised by craniosynostosis and midfacial hypoplasia. Our aim was to conduct extensive phenotyping of the maxillary, mandibular and dental morphology associated with this mutation. MATERIALS AND METHODS: Morphometric data were obtained from 40 mice, representing two genotypes (Crouzon and wild-type) and two sexes (males and females) (n=10 in each group)...
October 27, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/29223634/the-composite-palatal-island-flap-modification-of-an-existing-technique-to-reconstruct-the-maxillary-alveolus
#12
A Mosea
No abstract text is available yet for this article.
December 6, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29216869/horizontal-ridge-reconstruction-of-the-anterior-maxilla-using-customized-allogeneic-bone-blocks-with-a-minimally-invasive-technique-a-case-series
#13
Laurent Venet, Michel Perriat, Francesco Guido Mangano, Thomas Fortin
BACKGROUND: Different surgical procedures have been proposed to achieve horizontal ridge reconstruction of the anterior maxilla; all these procedures, however, require bone replacement materials to be adapted to the bone defect at the time of implantation, resulting in complex and time-consuming procedures. The purpose of this study was to describe how to use a 3D printed hardcopy model of the maxilla to prepare customized milled bone blocks, to be adapted on the bone defect areas using a minimally invasive subperiosteal tunneling technique...
December 8, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/29209690/prosthetic-rehabilitation-involving-the-use-of-implants-following-a-fibula-free-flap-reconstruction-in-the-treatment-of-osteosarcoma-of-the-maxilla-a-case-report
#14
E Brauner, A Quarato, F De Angelis, G Pompa, S Jamshir, V Valentini, S Di Carlo
INTRODUCTION: Osteosarcoma is an aggressive primary bone tumor composed of connective tissue cells directly producing osteoid and bone. Prosthetic rehabilitations in post-oncological patients after bone reconstruction are not substantially different than those of patients affected by severe atrophy of upper or lower jaw after bone reconstruction. The treatment for patients with a malignant neoplasia of the oral cavity requires multidisciplinary approach by a team of different specialists that follow the patient through the phases of diagnosis, therapy and oral rehabilitation...
November 2017: La Clinica Terapeutica
https://www.readbyqxmd.com/read/29209631/maxillary-sinus-floor-augmentation-using-an-equine-derived-graft-material-preliminary-results-in-17-patients
#15
F Rivara, M Negri, S Lumetti, L Parisi, A Toffoli, E Calciolari, E Manfredi, G M Macaluso
Objective: Sinus floor elevation with lateral approach is probably the most frequently performed reconstructive procedure to rehabilitate posterior maxilla when a bone deficiency is present. Different graft materials have been proposed and tested, often with high clinical performances and predictable results. Histological analysis is required when evaluating new materials. We investigated human biopsies retrieved after sinus floor elevation procedure by histomorphometric evaluation to test the performance of an equine-derived bone grafting material...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29191500/3t-non-injected-phase-contrast-mri-sequences-for-the-mapping-of-the-external-carotid-branches-in%C3%A2-vivo-radio-anatomical-pilot-study-for-feasibility-analysis
#16
Jérémie Bettoni, Gwénaël Pagé, Anne-Virginie Salsac, Jean-Marc Constans, Sylvie Testelin, Bernard Devauchelle, Olivier Balédent, Stéphanie Dakpé
An essential stage in head and neck microsurgical reconstruction is the choice of recipient vessels. To make relevant choices, surgeons must rely on accurate imaging techniques. The objective of the study was to examine the feasibility of Phase-Contrast sequences to conduct the pre-operative tests without injection and provide precise radio-anatomical data over the entire vessel region. The challenges were the large velocity range, the lack of contrast, and the large spatial resolution needed to image vessels below 5 mm in diameter...
October 16, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29172251/on-computational-fluid-dynamics-models-for-sinonasal-drug-transport-relevance-of-nozzle-subtraction-and-nasal-vestibular-dilation
#17
S Basu, D O Frank-Ito, J S Kimbell
Generating anatomically realistic three-dimensional (3D) models of the human sinonasal cavity for numerical investigations of sprayed drug transport presents a host of methodological ambiguities. For example, subject-specific radiographic images used for 3D reconstructions typically exclude spray bottles. Subtracting a bottle contour from the 3D airspace and dilating the anterior nasal vestibule for nozzle placement augment the complexity of model-building. So, we explored the question: how essential are these steps to adequately simulate nasal airflow and identify the optimal delivery conditions for intranasal sprays? In particular, we focused on particle deposition patterns in the maxillary sinus, a critical target site for chronic rhinosinusitis (CRS)...
November 24, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/29167715/quality-of-the-calcium-enriched-mixture-apical-plug-in-simulated-apexification-model-effect-of-different-mixing-and-placement-methods
#18
Saeed Rahimi, Negin Ghasemi, Tahmineh Razi, Akbar Rezaiepour
Background: Presence of voids at root canal wall‒apical seal material interface gives rise to the entrapment of toxins and microorganisms, which might have a relationship with post treatment disease. The present study was carried out to evaluate the effect of different mixing (manual and ultrasonic) and placement (manual and manual in association with indirect ultrasonic) methods of Calcium-enriched Mixture (CEM) cement on the number and dimensions of voids in the apical plug in simulated apexification models...
October 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29167705/comparative-analysis-of-impacted-upper-canines-panoramic-radiograph-vs-cone-beam-computed-tomography
#19
Catarina-Luís-Vicente-Rodrigues Pico, Francisco-José-Fernandes do Vale, Francisco-José-Santiago-Fernandes-Amado Caramelo, Ana Corte-Real, Sónia-Margarida-Alves Pereira
Background: The use of CBCT exam in the study of IMC is not new. However, it's still not known in what specific aspects CBCT exam shows a better result than then conventional exams. The aim of this study was to compare and conclude in what way the opinion regarding upper canine impaction differed when observing a panoramic image compared to the observation of a set of CBCT reconstructions. Material and Methods: Twenty patients (10 males and 10 females) with a total of 28 impacted maxillary canines were identified from the database of the Department of Dentistry, Faculty of Medicine, University of Coimbra...
October 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29151373/nasoseptal-flap-for-palatal-reconstruction-after-hemi-maxillectomy-case-report
#20
M K Alwashahi, P Battaglia, M Turri-Zanoni, P Castelnuovo
OBJECTIVE: Palatal reconstruction following maxillectomy is a surgical challenge, and a nasoseptal flap is a feasible approach. This paper reports the first known successful clinical case of a nasoseptal pedicle flap applied for the reconstruction of maxillary bone following hemi-maxillectomy. CASE REPORT: This report describes hemi-maxillectomy in a 60-year-old Italian male diagnosed with stage IV squamous cell carcinoma of the left maxilla. Endoscopic transnasal extended medial maxillectomy was performed, followed by a transoral modified midfacial degloving technique for removal of the maxillary bone...
November 20, 2017: Journal of Laryngology and Otology
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