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Journal of Cranio-maxillo-facial Surgery

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https://www.readbyqxmd.com/read/28318927/classical-versus-custom-orbital-wall-reconstruction-selected-factors-regarding-surgery-and-hospitalization
#1
Rafał Zieliński, Marta Malińska, Marcin Kozakiewicz
PURPOSE: Nowadays, in orbital wall reconstruction, maxillofacial surgeons have the possibility to treat patients in modern ways such as with individual implants. Nevertheless, conventional treatment including standard titanium mesh shaped during the surgical procedure is also widely used. The aim of this study was to compare the above methods of orbital wall reconstructions. MATERIALS AND METHODS: In the first group (39 cases), patients were treated by means of computer-aided design/computer-aided manufacturing (CAD/CAM) milled individual implants made of ultra-high-molecular-weight polyethylene, dioxide zirconium and rapid prototyping titanium mesh pre-bent on an ABS model made by a three-dimensional (3D) printer...
February 17, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318924/aged-rats-under-zoledronic-acid-therapy-and-oral-surgery
#2
Mariza Akemi Matsumoto, Elisa Mara de Abreu Furquim, Alaíde Gonçalves, Joel Ferreira Santiago-Júnior, Patrícia Pinto Saraiva, Camila Lopes Cardoso, Marcelo Salles Munerato, Roberta Okamoto
INTRODUCTION: Aging brings a number of health conditions that can compromise the healing process in elderly individuals, significantly when it comes to bone tissue. The aim of the present study was to analyze the effects of zoledronic acid (ZL) therapy on socket healing of aged male rats. MATERIALS AND METHODS: Twenty-four Wistar male rats, 20 months old, underwent surgical procedures for the extraction of the upper right incisor and were divided into two groups according to the treatment: Control (C) - intravenous (IV) 0...
February 17, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318921/influence-of-tgf-%C3%AE-1-on-tumor-transition-in-oral-cancer-cell-and-bmsc-co-cultures
#3
F Böhrnsen, F Godek, J Kiesel, F J Kramer, P Brockmeyer, H Schliephake
OBJECTIVES: TGF-β1 signaling modulates epithelial mesenchymal transitions (EMT) of head and neck squamous cell carcinoma (HNSCC). Bone marrow mesenchymal stromal cells (BMSC) are able to exert a regulating influence on the expression of markers of EMT in HNSCC cells. It was thus the aim of this study to test the hypothesis that TGF-β1 modulates the interactions of tumor transition between BMSCs and HNSCC, affecting the expression of E-cadherin, Vimentin, Snail, Twist, MMP14 and beta-catenin...
February 17, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318915/computer-assisted-positioning-of-the-proximal-segment-after-sagittal-split-osteotomy-of-the-mandible-preclinical-investigation-of-a-novel-electromagnetic-navigation-system
#4
Igor Nova, Sebastian Kallus, Moritz Berger, Oliver Ristow, Urs Eisenmann, Christian Freudlsperger, Jürgen Hoffmann, Hartmut Dickhaus
INTRODUCTION: Modifications of the temporomandibular joint position after mandible osteotomy are reluctantly accepted in orthognathic surgery. To tackle this problem, we developed a new navigation system using miniaturized electromagnetic sensors. Our imageless navigation approach is therefore optimized to avoid complications of previously proposed optical approaches such as the interference with established surgical procedures and the line of sight problem. MATERIAL AND METHODS: High oblique sagittal split osteotomies were performed on 6 plastic skull mandibles in a laboratory under conditions comparable to the operating theatre...
February 17, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318929/biomarkers-in-diagnosis-and-therapy-of-oral-squamous-cell-carcinoma-a-review-of-the-literature
#5
Sebastian Blatt, Maximilian Krüger, Thomas Ziebart, Keyvan Sagheb, Eik Schiegnitz, Elisabeth Goetze, Bilal Al-Nawas, Andreas Max Pabst
Oral squamous cell carcinoma (OSCC) represents the sixth most common cancer, accounting for 2-4% of all malignancies worldwide. The overall survival rate of less than 60% remains generally poor, with prognosis heavily relying on the TNM staging system. Tumor size as well as the presence and extent of lymph node metastases are widely recognized as the most important predictors. However, the underlying mechanisms that lead to an aggressive phenotype are not yet fully understood. Therefore, possible biomarkers are much in need to predict prognosis, to help individualize therapy approaches, and to overcome possible resistance mechanisms...
February 16, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318928/structured-evaluation-and-need-based-restructuring-of-the-cranio-maxillofacial-surgery-module-within-surgical-clerkship
#6
Sebastian Herbert Hoefer, Jasmina Sterz, Bernd Bender, Christina Stefanescu, Marius Theis, Felix Walcher, Robert Sader, Miriam Ruesseler
BACKGROUND: Evaluations are important for teaching courses and contribute to educational quality assurance. CMF surgery provides a module in the skills-lab week in preparation for surgical clerkship. Even though the CMF module receives positive evaluations, the students report deviating content. Subsequently, exams skills were often not mastered correctly. The aim of this study is to gather the contents taught within the course and to revise the module accordingly. METHODS: A structured evaluation sheet was used to evaluate the CMF modules...
February 13, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318925/retrospective-evaluation-of-three-different-joint-surgeries-for-internal-derangements-of-the-temporomandibular-joint
#7
Celal Candirli, Mehmet Demirkol, Onur Yilmaz, Sadi Memis
PURPOSE: To compare the outcomes achieved with eminectomy, discectomy alone, and discectomy with an abdominal dermis fat graft (D + ADFG) in the treatment of internal derangements (IDs) of the temporomandibular joint (TMJ), and to briefly discuss the failed cases in which a second operation was needed. PATIENTS AND METHODS: This was a retrospective study of 31 patients (27 females, 4 males) who were unresponsive to conservative therapy and therefore underwent eminectomy (group A, n = 6), discectomy alone (group B, n = 8), or D + ADFG (group C, n = 17)...
February 13, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318923/treatment-outcome-in-orthognathic-surgery-a-prospective-comparison-of-accuracy-in-computer-assisted-two-and-three-dimensional-prediction-techniques
#8
Martin Bengtsson, Gert Wall, Patricia Miranda-Burgos, Lars Rasmusson
The main objective of the present study was to assess the accuracy of two- and three-dimensional prediction techniques in orthognathic surgery. It was also a test of the very planning sequence. The scientific question was how well does the software support the surgeon in his way to find the perfect correction of the facial appearance while normalizing the occlusion? Thirty patients with a class III occlusion were included in this prospective study. Surgical planning with both techniques were undertaken for all patients...
February 13, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318922/surgical-rehabilitation-for-anophthalmic-sockets-devoid-of-orbital-implant
#9
Doo-Ri Eo, Yoon-Duck Kim, Kyung In Woo
PURPOSE: To determine the necessity of rehabilitative surgical procedures for no implant anophthalmic sockets, and predictive factors of corrective operations after secondary orbital implantation. MATERIAL AND METHODS: Nineteen unilateral anophthalmic patients without orbital implant were included. The distance of eyebrow, upper eyelid margin, and lower eyelid margin from the horizontal medial canthal line (BM, UM, and LM, respectively) was measured using photographs...
February 13, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318918/comparison-of-functional-outcomes-and-patient-reported-satisfaction-between-titanium-and-absorbable-plates-and-screws-for-fixation-of-mandibular-fractures-a-one-year-prospective-study
#10
Maria Belén Leno, Stanley Yung Liu, Chien-Tzung Chen, Han-Tsung Liao
PURPOSE: The aim of this study is to compare the 1-year functional outcomes and patient-reported satisfaction in treating mandibular fractures between resorbable and titanium fixation devices. MATERIALS AND METHODS: A 1-year prospective study was conducted; 41 consecutive patients presenting with mandibular fractures were included. A resorbable system was used in 21 patients, while in 20 patients a titanium fixation device was used. Functional outcome was evaluated objectively at several time points (2, 4 and 6 weeks, 3 and 6 months, and 1 year after surgery)...
February 13, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318920/resolution-of-neurosensory-deficit-after-mandibular-orthognathic-surgery-a-prospective-longitudinal-study
#11
Albraa Badr Alolayan, Yiu Yan Leung
OBJECTIVES: To investigate the longitudinal resolution of neurosensory deficit (NSD) and the possible risk factors that might contribute to NSD following mandibular orthognathic procedures. STUDY DESIGN: A prospective longitudinal observational study on patients who had mandibular orthognathic procedures was performed. Standardized neurosensory assessments were performed. The 2 years longitudinal resolution and risk factors of NSD including patients' age and gender, specific mandibular procedures and surgeons' experience were analyzed...
February 12, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318919/the-current-preferred-female-lip-ratio
#12
Paul I Heidekrueger, Sabrina Juran, Caroline Szpalski, Lorenz Larcher, Reuben Ng, P Niclas Broer
BACKGROUND: Perception of beauty is influenced by the individual's demographic background and characteristics. However, objective measurements and ratios remain the foundation for aesthetic evaluations. This study aimed to elucidate if there exists a universally applicable ideal upper to lower lip ratio. METHODS: An interactive online survey was designed. Modifiable ranges of lip ratios were achieved via digital alteration, enabling participants to change the ratio of a single female model's lips...
February 12, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318917/radiological-changes-with-magnetic-resonance-imaging-and-computed-tomography-after-irradiating-minipig-mandibles-the-role-of-t2-spir-mixed-signal-intensities-in-the-detection-of-osteoradionecrosis
#13
Lucas J Poort, Alida A Postma, Annika A R Stadler, Roland A Böckmann, Frank J Hoebers, Peter A W H Kessler
PURPOSE: Radiotherapy in the head and neck can induce several radiologically detectable changes in bone, osteoradionecrosis (ORN) among them. The purpose is to investigate radiological changes in mandibular bone after irradiation with various doses with and without surgery and to determine imaging characteristics of radiotherapy and ORN in an animal model. MATERIALS AND METHODS: Sixteen Göttingen minipigs were divided into groups and were irradiated with two fractions with equivalent doses of 0, 25, 50 and 70 Gray...
February 12, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318916/radiation-free-3d-head-shape-and-volume-evaluation-after-endoscopically-assisted-strip-craniectomy-followed-by-helmet-therapy-for-trigonocephaly
#14
Guido de Jong, Manon Tolhuisen, Jene Meulstee, Ferdi van der Heijden, Erik van Lindert, Wilfred Borstlap, Thomas Maal, Hans Delye
INTRODUCTION: Radiation-free 3D post-operative sequential follow-up in craniosynostosis is hindered by the lack of consistent markers restricting evaluation to subjective comparison. However, using the computed cranial focal point (CCFP), it is possible to perform correct sequential image superposition and objective evaluation. We used this technique for mean volume and shape change evaluation of the head utilizing 3D photos after endoscopically assisted trigonocephaly surgery. METHODS: We performed a mean head shape and volume evaluation on age grouped 3D photos (n = 86) of children who underwent endoscopically assisted strip craniectomy with helmet therapy...
February 12, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28285922/periosteal-distraction-osteogenesis-versus-immediate-periosteal-elevation-in-a-rat-model-histological-and-micro-ct-analysis
#15
Ken Nakahara, Maiko Haga-Tsujimura, Kosaku Sawada, Matthias Mottini, Benoit Schaller, Nikola Saulacic
PURPOSE: The aim of the present study was to compare periosteal distraction osteogenesis (PDO) to immediate periosteal elevation (IPE) in terms of de novo bone formation. MATERIAL AND METHODS: Animals of PDO Group were subjected to a 7-day latency period and a 10-day distraction period. Distraction device in IPE Group were activated for 1 mm at placement. Both groups of animals were euthanized at 17, 31 and 45-day following surgery and the samples analyzed histologically and by micro-CT...
February 6, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28283342/long-term-follow-up-study-of-patients-with-a-unilateral-complete-cleft-of-lip-alveolus-and-palate-following-the-utrecht-treatment-protocol-dental-arch-relationships
#16
Isabelle Francisca Petronella Maria Kappen, Gerhard Koendert Pieter Bittermann, Dirk Bitterman, Aebele Barber Mink van der Molen, William Shaw, Corstiaan Cornelis Breugem
OBJECTIVE: This study sought to evaluate long-term dental arch relationships in adults with a unilateral complete cleft lip and palate (UCLP) treated by the Utrecht protocol and to compare results with the centers from the Eurocleft study. MATERIALS AND METHODS: Retrospective analysis of UCLP patients age 17 or older, treated by two-stage palate closure at the Wilhelmina Children's Hospital, a tertiary center for cleft surgery in Utrecht, the Netherlands. Patients were invited to the clinic for a long-term evaluation...
February 6, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28283341/neoclassical-canons-of-facial-beauty-do-we-see-the-deviations
#17
Andrej Pavlic, Magda Trinajstic Zrinski, Visnja Katic, Stjepan Spalj
AIM: To explore the presence of neoclassical canons of facial beauty among young people in Croatia and to question possible psychosocial repercussions occurring in those who demonstrate deviations in relation to canons. SUBJECTS AND METHODS: The study was cross-sectional and the sample included 249 subjects (60% female) aged 12-39 (median 20). Their en face and profile photographs were taken in Natural Head Position. Photogrammetry included analysis of nine neoclassical canons of facial beauty originating from the Renaissance...
February 6, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28256384/osteosynthesis-using-cannulated-headless-herbert-screws-in-mandibular-angle-fracture-treatment-a-new-approach
#18
Jürgen Wallner, Knut Reinbacher, Matthias Feichtinger, Mauro Pau, Georg Feigl, Franz Quehenberger, Katja Schwenzer-Zimmerer, Wolfgang Zemann
INTRODUCTION: Fractures of the mandibular angle are a common type of facial skull fracture. Although operative treatment includes a wide range of fixation techniques, a definite gold standard method has yet to be established. Headless, cannulated Herbert screws, often used in many forms of minimally invasive trauma surgery, provide functional and stable fracture fixation. MATERIALS AND METHODS: In a prospective, double-randomised, controlled, parallel-group - designed, in vitro trial, the biomechanical behaviour of the Herbert bone screw system was compared to that of a conventional locking plate system in 40 mandibular angle fractures of human mandible cadaver phantoms...
February 6, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28258920/odontogenic-sinusitis-maxillaris-a-retrospective-study-of-121-cases-with-surgical-intervention
#19
Matthias Zirk, Timo Dreiseidler, Matthias Pohl, Daniel Rothamel, Johannes Buller, Franziska Peters, Joachim E Zöller, Matthias Kreppel
PURPOSE: Otolaryngologists, dentists and maxilla-facial surgeons see patients suffering from odontogenic maxillary sinusitis on a daily routine. The study was performed to investigate the different origins of the odontogenic maxillary sinusitis ranging from periodontitis to augmentative implant surgery. Furthermore, the microbial flora of purulent odontogenic maxillary sinusitis was analyzed in order to present a proper antibiotic treatment in addition to a surgical approach. MATERIALS AND METHODS: A retrospective study was performed, analyzing the clinical trials of 121 patients suffering from odontogenic maxillary sinusitis who undergone surgery...
February 4, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28238558/a-novel-computer-system-for-the-evaluation-of-nasolabial-morphology-symmetry-and-aesthetics-after-cleft-lip-and-palate-treatment-part-1-general-concept-and-validation
#20
Piotr Pietruski, Marcin Majak, Tomasz Debski, Boguslaw Antoszewski
PURPOSE: The need for a widely accepted method suitable for a multicentre quantitative evaluation of facial aesthetics after surgical treatment of cleft lip and palate (CLP) has been emphasized for years. The aim of this study was to validate a novel computer system 'Analyse It Doc' (A.I.D.) as a tool for objective anthropometric analysis of the nasolabial region. MATERIALS AND METHODS: An indirect anthropometric analysis of facial photographs was conducted with the A...
February 1, 2017: Journal of Cranio-maxillo-facial Surgery
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