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Journal of Cranio-maxillo-facial Surgery

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https://www.readbyqxmd.com/read/28187974/no-correlation-between-two-dimensional-measurements-and-three-dimensional-configuration-of-the-pharyngeal-upper-airway-space-in-cone-beam-computed-tomography
#1
Marie Dorothée Abé-Nickler, Samira Pörtner, Peter Sieg, Samer George Hakim
The aim of this study was to evaluate both the 2-dimensional (2D) and 3-dimensional (3D) configuration of the posterior airway space (PAS) in healthy 239 patients using cone-beam computed tomography (CBCT). In particular, we investigated the correlation between the 2D and 3D measurements in view of the potential impact on diagnosis of upper airway obstruction. The pharyngeal airway of each patient was studied at five levels: the level of the posterior nasal spine (PNS), the level of half-height of the PNS and the tip of the soft palate, the level of the tip of the soft palate, the level of the anterior-inferior point of the second vertebra, and at least the level of the top of the epiglottis...
January 10, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28185781/classification-of-orbital-exenteration-and-reconstruction
#2
Marco R Kesting, Steffen Koerdt, Niklas Rommel, Thomas Mücke, Klaus-Dietrich Wolff, Christopher P Nobis, Florian Ringel, Gesche Frohwitter
Orbital exenteration (OE) is considered to be a mutilating surgical procedure reserved for relentlessly progressive neoplastic disorders or extensive facial trauma with unfavourable eye involvement. Malignant tumours, accounting for the majority of ablative orbital surgeries, may be caused by primary orbital tumours or secondarily by neoplasias from the surrounding skin, the maxillary sinus or intracranial malignomas. Orbital exenteration following trauma is mostly caused by penetrating globe defects or extended infections with the danger of intracranial effects...
January 10, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28169045/sleep-surgery-tool-a-medical-checklist-to-review-prior-to-operating
#3
Macario Camacho, Robert W Riley, Robson Capasso, Peter O'Connor, Edward T Chang, Lauren K Reckley, Christian Guilleminault
OBJECTIVE: The objective of this study was to systematically review the international literature for studies providing a preoperative checklist for medical disorders to be evaluated or treated before performing sleep surgery. If no checklist exists, then studies providing recommendations would be used to develop a checklist de novo. STUDY DESIGN: Systematic review combined with expert opinion. METHODS: Four databases, including PubMed/Medline were searched through August 10, 2016...
January 10, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28169044/in%C3%A2-vitro-evaluation-of-wound-healing-and-antimicrobial-potential-of-ozone-therapy
#4
Gabriel Álvares Borges, Silvia Taveira Elias, Sandra Márcia Mazutti da Silva, Pérola Oliveira Magalhães, Sergio Bruzadelli Macedo, Ana Paula Dias Ribeiro, Eliete Neves Silva Guerra
Although ozone therapy is extensively applied when wound repair and antimicrobial effect are necessary, little is known about cellular mechanisms regarding this process. Thus, this study aimed to evaluate ozone cytotoxicity in fibroblasts (L929) and keratinocytes (HaCaT) cell lines, its effects on cell migration and its antimicrobial activity. Cells were treated with ozonated phosphate-buffered saline (8, 4, 2, 1, 0.5 and 0.25 μg/mL ozone), chlorhexidine 0.2% or buffered-solution, and cell viability was determined through MTT assay...
January 10, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28159480/quantifying-the-effect-of-corrective-surgery-for-trigonocephaly-a-non-invasive-non-ionizing-method-using-three-dimensional-handheld-scanning-and-statistical-shape-modelling
#5
Naiara Rodriguez-Florez, Özge K Göktekin, Jan L Bruse, Alessandro Borghi, Freida Angullia, Paul G M Knoops, Maik Tenhagen, Justine L O'Hara, Maarten J Koudstaal, Silvia Schievano, N U Owase Jeelani, Greg James, David J Dunaway
Trigonocephaly in patients with metopic synostosis is corrected by fronto-orbital remodelling (FOR). The aim of this study was to quantitatively assess aesthetic outcomes of FOR by capturing 3D forehead scans of metopic patients pre- and post-operatively and comparing them with controls. Ten single-suture metopic patients undergoing FOR and 15 age-matched non-craniosynostotic controls were recruited at Great Ormond Street Hospital for Children (UK). Scans were acquired with a three-dimensional (3D) handheld camera and post-processed combining 3D imaging software...
January 10, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28162845/role-of-microbiological-culture-and-polymerase-chain-reaction-pcr-of-actinomyces-in-medication-related-osteonecrosis-of-the-jaw-mronj
#6
Sappasith Panya, Riham Fliefel, Florian Probst, Matthias Tröltzsch, Michael Ehrenfeld, Sören Schubert, Sven Otto
We hypothesized that local infection plays a critical role in the pathogenesis of medication-related osteonecrosis of the jaw (MRONJ). Recent developments in molecular methods have revolutionized new approaches for the rapid detection of microorganisms including those difficult to culture. The aim of our study is to identify the bacterial profiles in MRONJ by microbiological culture and polymerase chain reactions (PCR). A retrospective analysis was performed on MRONJ patients from 2008 to 2014. The bacterial profile from MRONJ bone samples was determined using microbiological culture and PCR...
January 9, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28189490/comparison-of-two-preoperative-protocols-for-mandibular-symphyseal-distraction-osteogenesis-to-reduce-the-risk-of-tooth-damage
#7
Heinz Winsauer, Oliver Ploder, Katharina Juengling, Andre Walter, Andreas Kolk
: Two techniques to separate the lower incisors prior to mandibular symphyseal distraction osteogenesis (MSDO) were evaluated with respect to avoiding tooth damage. METHODS: Fifty patients (20.2 ± 7.0 years) requiring MSDO were treated with a tooth-borne appliance by utilizing two preoperative protocols to separate the central incisors: i) brackets and a V-bent wire with an open coil spring (two-step; TS; n = 24) and ii) a wire attached from the appliance to the central incisors with subsequent dento-alveolar expansion prior to surgery (one-step; OS; n = 26)...
December 30, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28202219/virtual-reconstruction-of-midface-defects-using-statistical-shape-models
#8
Wiebke Semper-Hogg, Marc Anton Fuessinger, Stefan Schlager, Edward Ellis, Carl-Peter Cornelius, Florian Probst, Marc Christian Metzger, Steffen Schwarz
PURPOSE: This study evaluates the accuracy of a statistical shape model (SSM) for virtual fracture reconstruction of the lateral midface. MATERIALS AND METHODS: A uniform bony defect of the right zygoma was created. A virtual reconstruction was performed by using the standard procedure of mirroring the unaffected to the affected side (Group I) and by using the statistical model based on 178 pathologically unaffected CT scans (Group II). The accuracy of the statistical shape model was evaluated in comparison to the present mirroring protocol...
December 24, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28108241/levator-alae-nasi-muscle-v-y-island-flap-for-nasal-tip-reconstruction
#9
Simone La Padula, Vincenzo Abbate, Gianluca Di Monta, Fabrizio Schonauer
Nasal tip reconstruction can be very challenging. It requires close attention to skin texture, colour and thickness matching, with the respect of the nasal aesthetic units and symmetry. Flaps are usually preferred to skin grafts where possible. Based on different donor areas, various flaps have been described for reconstruction of this region. Here we present a new V-Y myocutaneous island flap based on the levator alae nasi muscle (LAN muscle) blood supply. This flap may represent an alternative to the nasalis myocutaneous sliding V-Y flap previously described by Rybka...
December 21, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28108240/degenerative-temporomandibular-joint-changes-associated-with-recent-onset-disc-displacement-without-reduction-in-adolescents-and-young-adults
#10
Jie Lei, Jianhui Han, Muqing Liu, Yi Zhang, Adrian U-Jin Yap, Kai-Yuan Fu
This study evaluated the occurrence of degenerative temporomandibular joint (TMJ) changes in adolescents and young adults with recent on-set disc displacement without reduction (DDw/oR) using high-resolution cone beam computed tomography (CBCT). The associations between types of osteoarthrosis (OA) changes and clinical factors including disease duration were also examined. CBCT and clinical data of 300 patients (84.70% females, mean age 20.93 ± 4.77 years) diagnosed with unilateral DDw/oR (≤12 months) based on RDC/TMD were acquired...
December 21, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28108239/preoperative-ultrasonography-for-evaluation-of-clinically-n0-neck-in-oral-cavity-carcinoma
#11
Angel Rollon-Mayordomo, Teresa Creo-Martinez, Yolanda Marin-Lapeira, Juan-Andres Rodriguez-Ruiz, Pedro Infante-Cossio
The aim of this study was to evaluate preoperative ultrasound criteria to detect lymph node (LN) cervical metastasis in patients with clinically node-negative neck (cN0) oral cavity squamous cell carcinoma (OCSCC). A prospective, single-center, observational study was conducted in 90 patients undergoing cancer excision with or without elective neck dissection (END) between 2005 and 2012. A surgeon and an experienced radiologist performed preoperative cervical ultrasonography in all cases. The primary objective was to obtain an a priori sensitivity of 90% and specificity >50% in cN0 OCSCC staging...
December 21, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28108236/comparison-between-piezosurgery-and-conventional-osteotomy-in%C3%A2-cranioplasty-with-fronto-orbital-advancement
#12
Markus Martini, Andreas Röhrig, Rudolf Hermann Reich, Martina Messing-Jünger
BACKGROUND: Cranioplasty of patients with craniosynostosis requires rapid, precise and gentle osteotomy of the skull to avoid complications and benefit the healing process. The aim of this prospective clinical study was to compare two different methods of osteotomy. Piezosurgery and conventional osteotomy were compared using an oscillating saw and high speed drill while performing cranioplasties with fronto-orbital advancement. METHODS: Thirty-four children who required cranioplasty with fronto-orbital advancement were recruited consecutively...
December 21, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28065728/are-there-risk-factors-for-osseous-mandibular-inferior-border-defects-after-bilateral-sagittal-split-osteotomy
#13
J P Verweij, J G van Rijssel, M Fiocco, G Mensink, P J J Gooris, J P R van Merkesteyn
PURPOSE: Bone defects of the inferior mandibular border (osseous inferior border defects) can cause unesthetic postoperative outcomes after bilateral sagittal split osteotomy (BSSO). The aim of this study was to estimate the frequency of osseous inferior border defects after BSSO and to identify risk factors for this complication. MATERIALS AND METHODS: This retrospective study included consecutive patients who underwent BSSO for mandibular retrognathia. The primary outcome was the presence/absence of osseous inferior border defects...
December 21, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28110999/effect-of-hypoxia-on-the-proliferation-of-porcine-bone-marrow-derived-mesenchymal-stem-cells-and-adipose-derived-mesenchymal-stem-cells-in-2-and-3-dimensional-culture
#14
Egon Burian, Florian Probst, Benjamin Palla, Christina Riedel, Maximilian Michael Saller, Matthias Cornelsen, Florian König, Matthias Schieker, Sven Otto
OBJECTIVE: Bone marrow-derived mesenchymal stem cells (MSCs) and adipose-derived mesenchymal stem cells (ASCs) currently represent a promising tool for the regeneration of large bony defects. Therefore, it is pivotal to find the best cell source within the body and the best conditions for in vitro cellular expansion. This study compared cellular response of MSCs and ASCs from a porcine animal in normoxic (21% O2) and hypoxic (2% O2) cell culture conditions via 2D and 3D experimental settings...
December 20, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28108238/effect-of-an-evidence-based-guideline-on-the-treatment-of-maxillofacial-cancer-a-prospective-analysis
#15
Klaus-Dietrich Wolff, Andrea Rau, Julia Ferencz, Thomas Langer, Marco Kesting, Markus Nieberler, Simone Wesselmann
BACKGROUND: In 2012, a guideline for the diagnosis and treatment of oral cavity cancer based on the best available evidence was implemented at certified German cancer centres for head and neck carcinomas. The present analysis was performed to determine whether the implementation of the guideline via certification improved the level of care, leading to a benefit for the patients. METHODS: A prospective observational study was performed based on the annual operating figures at 31 certified head and neck cancer centres...
December 20, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28087283/benefits-of-using-the-ultrasonic-bonescalpel%C3%A2-in-temporomandibular-joint-reconstruction
#16
Rebeka Silva, Rishi Gupta, Gianluca Tartaglia, Stephen Connelly
PURPOSE: The main objective of this retrospective study is to analyze and report on our operative experiences and outcomes using the ultrasonic BoneScalpel™ (BoneScalpel) versus a conventional reciprocating saw (RecipSaw) for the purpose of completing the osteotomies in total temporomandibular joint reconstruction (TJR) surgery. MATERIALS AND METHODS: 23 consecutive patients presented with a diagnosis of either degenerative joint disease (n = 23), a failing autogenous TJR (n = 1), heterotrophic bone formation (n = 1) or a subcondylar fracture (n = 1) for a total of 26 joints that received a TJR...
December 19, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28087282/short-term-perioperative-teriparatide-therapy-for-the-prevention-of-medication-related-osteonecrosis-of-the-jaw-a-randomized-controlled-preclinical-study-in-rats
#17
Mohammad Zandi, Arash Dehghan, Amirhossein Mohammadi-Mofrad, Payam Amini, Farshid Vahdatinia
OBJECTIVE: Dentoalveolar procedures in patients receiving bisphosphonates and other antiresorptive agents are associated with an increased risk of medication-related osteonecrosis of the jaw (MRONJ). The aim of present study was to evaluate the effects of perioperative teriparatide (TPD) therapy in prevention of MRONJ. SUBJECTS AND METHODS: Two protocols of TPD therapy were studied. For protocol A, 25 TPD-treated (AT) and 25 control (AC) rats received 5 weekly injection of 0...
December 19, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28109641/three-dimensional-airways-volumetric-analysis-before-and-after-fast-and-early-mandibular-osteodistraction
#18
Valerio Ramieri, Emanuela Basile, Giulio Bosco, Elena Caresta, Paola Papoff, Piero Cascone
PURPOSE: Newborns with Pierre Robin sequence (PRS) and syndromic micrognathia show microgenia and glossoptosis, which cause reduction of the airway and breathing difficulty from birth. Our goal is to analyze quantitative and qualitative volumetric changes before and after fast and early mandibular osteodistraction (FEMOD) and to compare radiological data. METHODS: The sample was composed of 4 patients, who satisfied inclusion criteria for completeness of data. Computed tomography pre- and post-operation were performed, then a volumetric assessment was made with Dolphin Imaging...
December 18, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28108237/poly-trimethylene-carbonate-based-composite-materials-for-reconstruction-of-critical-sized-cranial-bone-defects-in-sheep
#19
Ni Zeng, Anne C van Leeuwen, Dirk W Grijpma, Ruud R M Bos, Roel Kuijer
PURPOSE: The use of ceramic materials in repair of bone defects is limited to non-load-bearing sites. We tested poly(trimethylene carbonate) (PTMC) combined with β-tricalcium phosphate or biphasic calcium phosphate particles for reconstruction of cranial defects. MATERIALS AND METHODS: PTMC-calcium phosphate composite matrices were implanted in cranial defects in sheep for 3 and 9 months. Micro-computed tomography quantification and histological observation were performed for analysis...
December 18, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28089087/prevalence-profile-of-odontogenic-cysts-and-tumors-on-brazilian-sample-after-the-reclassification-of-odontogenic-keratocyst
#20
Filipe Jaeger, Mariana Saturnino de Noronha, Maiza Luiza Vieira Silva, Márcio Bruno Figueiredo Amaral, Soraya de Mattos Carmago Grossmann, Martinho Campolina Rebello Horta, Paulo Eduardo Alencar de Souza, Maria Cássia Ferreira de Aguiar, Ricardo Alves Mesquita
PURPOSE: The aim of this study was to evaluate the impact of the reclassification of odontogenic keratocyst (OKC) as a tumor on the prevalence profile of odontogenic cysts (OCs) and odontogenic tumors (OTs). STUDY DESIGN: Two referral Oral and Maxillofacial Pathology services in Brazil were evaluated. All cases diagnosed as OCs or OTs were selected and classified according to the 1992 WHO-classification (cases before 2005 WHO classification of tumors excluding OKC) and the 2005 WHO classification of tumors, going forward including cases of odontogenic keratocyst tumor (KCOT)...
December 18, 2016: Journal of Cranio-maxillo-facial Surgery
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