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Head & Face Medicine

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https://www.readbyqxmd.com/read/30477522/assessing-staining-resistance-of-a-cad-cam-interpenetrating-network-composite-material
#1
Mehmet Mustafa Özarslan, Ulviye Şebnem Büyükkaplan, Çağatay Barutcigil, Merve Özarslan, Kubilay Barutcigil, Nurullah Türker
BACKGROUND: Color change of dental materials over time because of staining agents has important effects on the long-term prognosis of dental esthetic treatments. In the present study, staining resistance of an interpenetrating network composite material with different translucency levels (translucent and high translucent) and various surface procedures for finishing were investigated. METHODS: Same shade CAD/CAM interpenetrating network composite specimens having two different translucency levels were prepared using by a water cooling cutting saw...
November 26, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30466447/antinuclear-antibody-and-rheumatoid-factor-positivity-in-temporomandibular-disorders
#2
Ji Rak Kim, Jung Hwan Jo, Jin Woo Chung, Ji Woon Park
BACKGROUND: To investigate the differences in clinical characteristics and long-term treatment outcomes according to antinuclear antibody(ANA) and rheumatoid factor(RF) positivity and the correlation between pain-related and hematological indices in temporomandibular disorders(TMD) patients. METHODS: Clinical examinations were done following the Research Diagnostic Criteria for TMD in 257 patients. Comprehensive screening along with psychological and hematological evaluations (ANA, RF, complete blood cell count, C-reactive protein[CRP] and erythrocyte sedimentation rate[ESR]) were conducted...
November 22, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30458845/comparing-oral-health-in-patients-with-different-levels-of-dental-anxiety
#3
Alexander Zinke, Christian Hannig, Hendrik Berth
BACKGROUND: Dental Anxiety is still today one of the most common fears and is therefore a great challenge for every dental practitioner. The aim of this study was to identify patients with dental anxiety using the Dental Anxiety Scale and comparing different levels of dental anxiety with oral health using DMF-T and DMF-S index. METHODS: This study questioned 1549 patients over the course of three years (2002-2005). DAS questionnaires were handed out before treatment and the state of oral health was evaluated using DMF-T and DMF-S...
November 20, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30419912/extracorporeal-shockwave-treatment-impedes-tooth-movement-in-rats
#4
Phimon Atsawasuwan, Yinghua Chen, Karan Ganjawalla, Albert L Kelling, Carla A Evans
BACKGROUND: Accelerated tooth movement has been a topic of interest for orthodontic research recently. Surgically facilitated orthodontic treatment has been shown to be an effective approach to accelerate tooth movement; however, it remains invasive, requires additional surgery, and may increase post-operative complications. In this study, we evaluate the effects of extracorporeal shockwave treatment (ESWT), a non-invasive approach to regenerate alveolar bone, on orthodontic tooth movement in rats...
November 12, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30373608/myositis-ossificans-traumatica-of-the-masticatory-muscles-etiology-diagnosis-and-treatment
#5
Marcel Hanisch, Lale Hanisch, Leopold F Fröhlich, Richard Werkmeister, Lauren Bohner, Johannes Kleinheinz
BACKGROUND: Myositis ossificans describes a heterotopic bone formation within a muscle. Thereby myositis ossificans is classified in two different groups: myositis ossificans progressiva (MOP) which describes a genetic autosomal dominant rare disease and myositis ossificans traumatica (MOT). The exact pathogenesis of MOT is unclear. The aim of this article was to analyse and interpret the existing literature reporting MOT of masticatory muscles and compare the results with our own clinical experience with MOT...
October 29, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30348191/assessing-the-effect-of-multibracket-appliance-treatment-on-tooth-color-by-using-electronic-measurement
#6
Anja Ratzmann, Christan Schwahn, Anja Treichel, Andreas Faltermeier, Alexander Welk
BACKGROUND: The purpose of this study was to investigate how tooth color is affected by multibracket appliance (MBA) treatment. METHODS: The color of teeth #14 to #24 of 15 patients with MBA was measured on body and gingival tooth segments using the spectrophotometer Shade Inspector™. Colors of both segments were recorded before start of MBA treatment (baseline T0 ), end of MBA treatment (T1 ; 2 years ±0.3), and 3 months after T1 (T2 ). A 2D color system and a 3D system served as reference systems...
October 22, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30290762/three-dimensional-evaluation-of-soft-tissue-after-orthognathic-surgery
#7
Junho Jung, Chi-Heun Lee, Jung-Woo Lee, Byung-Joon Choi
BACKGROUND: To evaluate the nasolabial soft tissue change three-dimensionally after orthognathic surgery, using a structured light scanner. METHODS: Thirty-two malocclusion patients, who underwent orthognathic surgery, were evaluated. CBCT and 3D facial scans were obtained before surgery and 3 months after surgery. The 3D changes in the 26 landmarks, and the relative ratio of the soft tissue movement to the bony movement, were evaluated. RESULTS: In the Le Fort I advancement patients, the nasal tip moved 17% forward, compared to the maxillary bony movement, but the nasal prominence decreased 15%...
October 5, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30261897/effect-of-dach1-on-proliferation-and-invasion-of-laryngeal-squamous-cell-carcinoma
#8
Jiarui Zhang, Xiuxia Ren, Bo Wang, Jing Cao, Linli Tian, Ming Liu
BACKGROUND: To investigate the effect of DACH1 over-expression on proliferation and invasion of laryngeal squamous cell carcinoma (LSCC). METHODS: The 120 cases of LSCC tumors and 114 adjacent non-neoplastic tissues were collected to detect the expression of DACH1 by immunohistochemistry. The changes of DACH1 expression from each group were assessed and correlated to the clinical parameters of the patients. Plasmid-DACH1 was transfected into Hep-2 cells to up-regulate the expression of DACH1C...
September 27, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30257689/the-micromass-formation-potential-of-human-adipose-derived-stromal-cells-isolated-from-different-various-origins
#9
Benedikt Kleineidam, Sonja Sielker, Marcel Hanisch, Johannes Kleinheinz, Susanne Jung
BACKGROUND: Adult stem cells appear to be a promising subject for tissue engineering, representing an individual material for regeneration of aged and damaged cells. Especially adipose derived stromal cells (ADSC), which are easily to achieve, allow an encouraging perspective due to their capability of differentiating into miscellaneous cell types. Here we describe the in vitro formation of human subcutaneous, visceral and omental ADSC micromasses and compare their histological attributes while being cultivated on collagen membranes...
September 26, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30253798/the-glomus-tumor-resorbed-bone-and-teeth-in-the-mandible-a-case-report
#10
Kazuto Kurohara, Yasuyuki Michi, Akane Yukimori, Satoshi Yamaguchi
BACKGROUND: A glomus tumor is a rare neoplasm usually found in the dermis or subcutaneous tissue of the extremities. It is rare for the glomus tumor to occur on the head and face. Only 26 glomus tumors of the oral region and affected bone have been reported in the English-language literature (Table 1). We report a case of a glomus tumor at the mandible. As a new point, the glomus tumor resorbed a bone and teeth roots when the tumor progressed into the mandible. CASE PRESENTATION: The patient was a 44-year-old Japanese man who complained swelling of the right mandible...
September 25, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30249268/quality-of-occlusal-outcome-following-space-closure-in-cases-of-lower-second-premolar-aplasia-using-lingual-orthodontic-molar-mesialization-without-maxillary-counterbalancing-extraction
#11
Elisabeth Klang, Frauke Beyling, Michael Knösel, Dirk Wiechmann
BACKGROUND: Controlled space closure in cases of isolated lower second premolar aplasia (ILSPA) without maxillary counterbalancing extraction is challenging. Anterior anchorage loss may occur during space closure resulting in compromised occlusal results in terms of an absence of proper canine guidance during laterotrusive mandible movements. In order to evaluate the effectiveness of Herbst telescope anchorage in combination with double-cable, pull mechanics and a completely customized lingual appliance for orthodontic space management in cases of ILSPA, we tested the null hypothesis that there is a significant deterioration in the sagittal canine relationship towards an Angle-Class-II occlusion expressed as a loss of anterior anchorage following space closure with molar mesialization...
September 24, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30231897/surgically-assisted-rapid-maxillary-expansion-in-lingual-orthodontics-optimizing-of-coupling-and-timing-best-oral-presentation-from-the-21st-meeting-of-german-society-of-lingual-orthodontics
#12
Martina Bräutigam, Benedict Wilmes, Nour Eldin Tarraf, Dieter Drescher
BACKGROUND: Surgically assisted rapid maxillary expansion (SARME) is primarily used in adult orthodontics. In many cases it is followed by further surgery to address further anteroposterior and/or vertical discrepancies. Treatment times in such cases are often long with adult patients usually requesting invisible appliances. Lingual appliances can provide the mechanical control required as well as fulfil the aesthetic demands in such cases. However lingual appliances are usually custom made and indirectly bonded...
September 19, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30223858/tmj-pathomorphology-in-patients-with-jia-radiographic-parameters-for-early-diagnosis
#13
Daniela Klenke, Anja Quast, Martina Prelog, Annette Holl-Wieden, Maximilian Riekert, Angelika Stellzig-Eisenhauer, Philipp Meyer-Marcotty
BACKGROUND: Juvenile idiopathic arthritis (JIA) is often accompanied by pathomorphological changes to the temporomandibular joint (TMJ). By analyzing orthodontical orthopantomograms of JIA patients the aims of the study were a) classification of condyle changes, b) quantification of bony asymmetries of condylar destruction and c) detection of relationships between disease duration and TMJ-involvement. PATIENTS/METHODS: 46 caucasian JIA-patients (28 female; 18 male; < 16...
September 17, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30180903/bilateral-central-giant-cell-granuloma-of-the-mandibular-angle-in-three-females-from-the-same-family
#14
Simona Tecco, Silvia Caruso, Alessandro Nota, Pietro Leocata, Gianluca Cipollone, Roberto Gatto, Tommaso Cutilli
In literature there are few reports about multiple CGCG. But this is the first report of bilateral CGCG of the mandibular angles in three females from the same family.This report describes three cases of females from the same family - a mother and two young daughters - with bilateral CGCG in their jaw angles. All the lesions were surgically removed and the histopathologic diagnosis was always identical: giant cell central granulomas, with patterns that were absolutely superimposable between them and with that of the mother...
September 4, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30126425/the-push-out-bond-strength-of-calcium-silicate-based-endodontic-sealers
#15
David Donnermeyer, Pia Dornseifer, Edgar Schäfer, Till Dammaschke
BACKGROUND: The aim was to compare the dislodgement resistance of calcium silicate-based sealers (Total Fill BC Sealer, Endo CPM Sealer, BioRoot RCS) with an epoxy resin-based sealer (AH Plus). METHODS: The root canals of 80 single-rooted human teeth were instrumented with F360 up to size 45.04. All canals were obturated using matching gutta-percha cones according to the single-cone technique in combination with one of the mentioned sealers (n = 20 per group)...
August 20, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30115081/protective-effect-and-related-mechanisms-of-curcumin-in-rat-experimental-periodontitis
#16
Chang-Jie Xiao, Xi-Jiao Yu, Jian-Li Xie, Shuang Liu, Shu Li
BACKGROUND: Curcumin exhibits anti-inflammatory effects and has been suggested as a treatment for inflammatory diseases. The aim of this study was to investigate the effects of curcumin on the lipopolysaccharide induced inflammatory response in rat gingival fibroblasts in vitro and ligation-induced experimental periodontitis in vivo, and to speculate the possible anti-inflammatory mechanism of curcumin. METHODS: The gingival fibroblasts were incubated with different concentrations of curcumin in the absence or presence of lipopolysaccharide (LPS)...
August 16, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30075821/the-possibilities-of-a-portable-low-budget-three-dimensional-stereophotogrammetry-system-in-neonates-a-prospective-growth-analysis-and-analysis-of-accuracy
#17
Lucas M Ritschl, Maximilian Roth, Andreas M Fichter, Fabienna Mittermeier, Bettina Kuschel, Klaus-Dietrich Wolff, Florian D Grill, Denys J Loeffelbein
BACKGROUND: With the technical development, portable three-dimensional (3D) photogrammetry systems are becoming more en vogue because of cost-effectiveness and comparable accuracy to common stationary 3D systems. The purpose of the study was to evaluate the feasibility and accuracy of a low-budget portable system for 3D image acquisition with special regard to the gracile nasal region in neonates. Furthermore, the study aimed to establish a 3D data set of the first 180 days post partum...
August 3, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/30005670/orthokeratinized-odontogenic-cysts-a-spanish-tertiary-care-centre-study-based-on-hpv-dna-detection
#18
Beatriz Vera-Sirera, Luis Rubio-Martínez, Leopoldo Forner-Navarro, Francisco Vera-Sempere
BACKGROUND: The role of human papillomavirus (HPV) in orthokeratinized odontogenic cysts (OOCs) has rarely been studied. The objective is to describe the clinicopathological findings in a series of OOCs from a Spanish population that were investigated in relation to the possible presence of HPV. METHODS: A clinicopathological retrospective analysis followed by a molecular analysis of 28 high- and low-risk HPV genotypes was performed in OOC samples of patients seen during the last 15-years in a Spanish tertiary care center...
July 13, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/29843756/clinical-comparison-of-liquid-based-and-conventional-cytology-of-oral-brush-biopsies-a-randomized-controlled-trial
#19
Constanze Olms, Nathalie Hix, Heinrich Neumann, Maryam Yahiaoui-Doktor, Torsten W Remmerbach
BACKGROUND: Exfoliative cytology performed on oral brush samples can help dentists to decide, whether a given oral lesion is (pre-) malignant. The use of non-invasive brush biopsies as an auxiliary tool in the diagnosis of oral mucosal lesions has gained renewed interest since improvements in cytological techniques such as the development of adjuvant diagnostic tools and liquid-based cell preparation techniques. METHODS: The aim of this study was to compare the quality of two different preparation techniques (cell collectors): the conventional transfer procedure to glass slides and the so-called liquid-based cytology preparation method...
May 29, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/29728102/stenting-the-eustachian-tube-to-treat-chronic-otitis-media-a-feasibility-study-in-sheep
#20
Friederike Pohl, Robert A Schuon, Felicitas Miller, Andreas Kampmann, Eva Bültmann, Christian Hartmann, Thomas Lenarz, Gerrit Paasche
BACKGROUND: Untreated chronic otitis media severely impairs quality of life in affected individuals. Local destruction of the middle ear and subsequent loss of hearing are common sequelae, and currently available treatments provide limited relief. Therefore, the objectives of this study were to evaluate the feasibility of the insertion of a coronary stent from the nasopharynx into the Eustachian tube in-vivo in sheep and to make an initial assessment of its positional stability, tolerance by the animal, and possible tissue reactions...
May 4, 2018: Head & Face Medicine
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