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Head & Face Medicine

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https://www.readbyqxmd.com/read/29321071/head-circumference-a-useful-single-parameter-for-skull-volume-development-in-cranial-growth-analysis
#1
Markus Martini, Anne Klausing, Guido Lüchters, Nils Heim, Martina Messing-Jünger
BACKGROUND: The measurement of maximal head circumference is a standard procedure in the examination of childrens' cranial growth and brain development. The objective of the study was to evaluate the validity of maximal head circumference to cranial volume in the first year of life using a new method which includes ear-to-ear over the head distance and maximal cranial length measurement. METHODS: 3D surface scans for cranial volume assessment were conducted in this method comparison study of 44 healthy Caucasian children (29 male, 15 female) at the ages of 4 and 12 months...
January 10, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/29329558/quality-of-life-and-problems-associated-with-obturators-of-patients-with-maxillectomies
#2
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/29329562/granular-cell-tumors-of-the-tongue-fibroma-or-schwannoma
#3
Atsushi Musha, Masaru Ogawa, Satoshi Yokoo
BACKGROUND: Granular cell tumors are benign lesions that typically occur in the oral cavity, but can also be found in other sites. However, the characteristics of these tumors are unclear. Thus, the present study aimed to investigate the immunohistological characteristics of these tumors of the tongue. METHODS: Seven patients were treated for granular cell tumors of the tongue at our institution during 2003-2017. Paraffin-embedded specimens were available for all cases; thus, retrospective immunohistochemical analyses were performed...
January 3, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/29229002/comprehensive-analysis-of-ectopic-mandibular-third-molar-a-rare-clinical-entity-revisited
#4
Yaping Wu, Yue Song, Rong Huang, Jiaan Hu, Xiaotong He, Yanling Wang, Guangchao Zhou, Chao Sun, Hongbing Jiang, Jie Cheng, Dongmiao Wang
BACKGROUND: Ectopic mandibular third molar is a rare clinical entity with incompletely known etiology. Here, we sought to delineate its epidemiological, clinical and radiographic characteristics, and therapy by integrating and analyzing the cases treated in our institution together with previously reported cases. METHOD: A new definition and classification for ectopic mandibular third molar was proposed based on its anatomic location on panoramic images. Thirty-eight ectopic mandibular third molars in 37 patients and 51 teeth in 49 patients were identified in our disease registry and from literature (1990-2016), respectively...
December 11, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/29221472/odontoblast-like-differentiation-and-mineral-formation-of-pulpsphere-derived-cells-on-human-root-canal-dentin-in-vitro
#5
Jörg Neunzehn, Sandra Pötschke, Christian Hannig, Hans-Peter Wiesmann, Marie-Theres Weber
BACKGROUND: The revitalization or regeneration of the dental pulp is a preferable goal in current endodontic research. In this study, human dental pulp cell (DPC) spheres were applied to human root canal samples to evaluate their potential adoption for physiological tissue-like regeneration of the dental root canal by odontoblastic differentiation as well as cell-induced mineral formation. METHODS: DPC were cultivated into three-dimensional cell spheres and seeded on human root canal specimens...
December 8, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/29162139/effect-of-aging-and-curing-mode-on-the-compressive-and-indirect-tensile-strength-of-resin-composite-cements
#6
Nadja Rohr, Jens Fischer
BACKGROUND: Resin composite cements are used in dentistry to bond ceramic restorations to the tooth structure. In the oral cavity these cements are subjected to aging induced by masticatory and thermal stresses. Thermal cycling between 5 and 55 °C simulates the effect of varying temperatures in vitro. Purpose of this study was to compare indirect tensile to compressive strength of different cements before and after thermal cycling. The effect of the curing mode was additionally assessed...
November 21, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/29126455/micrognathia-with-temporomandibular-joint-ankylosis-and-obstructive-sleep-apnea-treated-with-mandibular-distraction-osteogenesis-using-skeletal-anchorage-a-case-report
#7
Hiroshi Tomonari, Hiroko Takada, Tomofumi Hamada, Sangho Kwon, Tsuyoshi Sugiura, Shouichi Miyawaki
BACKGROUND: We describe the case of a 16-year-old female patient with micrognathia, temporomandibular joint (TMJ) ankylosis, and obstructive sleep apnea, who was treated with mandibular distraction osteogenesis (DO) combined with sliding genioplasty, using skeletal anchorage. CASE PRESENTATION: We first performed interpositional arthroplasty, in which an interposition of fascia temporalis and surrounding fat tissue was inserted into the defect after bilateral condylectomy, increasing the maximum mouth opening from 5...
November 10, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/29126426/the-influence-of-immediately-loaded-implant-treatment-in-the-atrophic-edentulous-maxilla-on-oral-health-related-quality-of-life-of-edentulous-patients-3-year-results-of-a-prospective-study
#8
Maria Erkapers, Susanna Segerström, Karl Ekstrand, Russell A Baer, Joseph A Toljanic, Andreas Thor
BACKGROUND: To evaluate oral health related quality of life (OHQoL) in edentulous patients treated with immediately loaded implants in the maxilla. METHODS: Fifty-one edentulous patients in two centers received six maxillary implants each were loaded within 24 h with provisional restoration. Definitive restoration was delivered 20-24 weeks later. OHQoL was evaluated preoperatively with the Oral Health Impact Profile 49 questionnaire (OHIP-49) and on five subsequent occasions...
November 10, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/29116013/the-influence-of-dexamethasone-on-postoperative-swelling-and-neurosensory-disturbances-after-orthognathic-surgery-a-randomized-controlled-clinical-trial
#9
W Semper-Hogg, M A Fuessinger, T W Dirlewanger, C P Cornelius, M C Metzger
BACKGROUND: Orthognathic surgery is associated with considerable swelling and neurosensory disturbances. Serious swelling can lead to great physical and psychological strain. A randomized, prospective, controlled clinical trial was realized in order to evaluate the effect of a preoperative intravenous dexamethasone injection of 40 mg on postoperative swelling and neurosensory disturbances after orthognathic surgery. METHODS: Thirty-eight patients (27 male and 11 female) patients, all with the indication for an orthognathic surgery, were enrolled in this study (mean age: 27...
November 7, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/29073902/clinical-and-radiographic-evaluation-of-pulpectomy-in-primary-teeth-a-18-months-clinical-randomized-controlled-trial
#10
Xiaoxian Chen, Xinggang Liu, Jie Zhong
BACKGROUND: To avoid untoward changes when primary teeth are replaced by permanent teeth, resorption of the material used in primary teeth root canal filling should occur at the same rate as root resorption. The Aim of this study was to compare the success rates of a mixed primary root canal filling (MPRCF, ingredients: zinc oxide-eugenol [ZOE], iodoform, calcium hydroxide) to those of ZOE and Vitapex in pulpectomised primary molars. METHODS: One hundred and sixty primary molars from 155 children (average age 5...
October 27, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/29017523/single-tooth-torque-correction-in-the-lower-frontal-area-by-a-completely-customized-lingual-appliance
#11
Collin Jacobs, Milena Katzorke, Dirk Wiechmann, Heiner Wehrbein, Rainer Schwestka-Polly
BACKGROUND: Aim of this study was to analyze the efficacy and precision of the completely customized lingual appliance (CCLA) regarding the single tooth torque correction. The study also examined external apical root resorptions as possible side effects of torque correction and the changings of the periodontal situation. METHODS: A case series of three patients were included. The patients showed a single tooth torque problem with a gingival recession and were treated with the CCLA...
October 10, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/28962664/a-new-concept-for-implant-borne-dental-rehabilitation-how-to-overcome-the-biological-weak-spot-of-conventional-dental-implants
#12
Nils-Claudius Gellrich, Björn Rahlf, Rüdiger Zimmerer, Philipp-Cornelius Pott, Majeed Rana
BACKGROUND: Every endosseous dental implant is dependent on an adequate amount and quality of peri-implant hard and soft tissues and their fully functional interaction. The dental implant could fail in cases of insufficient bone and soft tissues or due to a violation of the soft to hard tissues to implant shoulder interface with arising of a secondary bone loss. METHOD: To overcome this biological weak-spot, we designed a new implant that allows for multi vector endosseous anchorage around the individual underlying bone, which has to be scanned by computed tomography (CT) or Cone beam CT (CBCT) technique to allow for planning the implant...
September 29, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/28655358/the-association-between-interleukin-28b-gene-polymorphisms-as-a-potential-biomarker-and-the-risk-of-chronic-periodontitis-in-an-iranian-population
#13
Zahra Heidari, Bita Moudi, Hamidreza Mahmoudzadeh-Sagheb, Mehrnoosh Moudi
BACKGROUND: Chronic Periodontitis (CP) is a common inflammatory disease affects supporting tissues of the teeth and can lead to tooth loss. The objective of this study was to determine the relationship between polymorphisms in the IL-28B gene and chronic periodontitis in an Iranian population. METHODS: Two hundred and ten CP patients and one hundred healthy subjects were enrolled in the present case-control study. The rs12979860 and rs8099917 SNPs were identified using RFLP and T-ARMS-PCR methods respectively...
June 27, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/28645317/facial-soft-tissue-response-to-maxillo-mandibular-advancement-in-obstructive-sleep-apnea-syndrome-patients
#14
Julio Cifuentes, Christian Teuber, Alfredo Gantz, Ariel Barrera, Gholamreza Danesh, Nicolas Yanine, Carsten Lippold
No abstract text is available yet for this article.
June 23, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/28615034/novel-methodologies-and-technologies-to-assess-mid-palatal-suture-maturation-a-systematic-review
#15
Darren Isfeld, Manuel Lagravere, Vladimir Leon-Salazar, Carlos Flores-Mir
INTRODUCTION: A reliable method to assess midpalatal suture maturation to drive clinical decision-making, towards non-surgical or surgical expansion, in adolescent and young adult patients is needed. The objectives were to systematically review and evaluate what is known regarding contemporary methodologies capable of assessing midpalatal suture maturation in humans. METHODS: A computerized database search was conducted using Medline, PubMed, Embase and Scopus to search the literature up until October 5, 2016...
June 14, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/28615027/influence-of-interradicular-and-palatal-placement-of-orthodontic-mini-implants-on-the-success-survival-rate
#16
Jan Hourfar, Dirk Bister, Georgios Kanavakis, Jörg Alexander Lisson, Björn Ludwig
BACKGROUND: The purpose of this retrospective cohort study was to investigate the success rates of orthodontic mini-implants (OMIs) placed in different insertion sites and to analyse patient and site- related factors that influence mini-implant survival. METHODS: Three hundred eighty-seven OMIs were inserted in 239 patients for orthodontic anchorage and were loaded with a force greater than 2 N. Two different insertion sites were compared: 1. buccal inter-radicular and 2...
June 14, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/28592312/vertical-bone-regeneration-using-rhbmp-2-and-vegf
#17
Lara Schorn, Christoph Sproll, Michelle Ommerborn, Christian Naujoks, Norbert R Kübler, Rita Depprich
BACKGROUND: Sufficient vertical and lateral bone supply and a competent osteogenic healing process are prerequisities for the successful osseointegration of dental implants in the alveolar bone. Several techniques including autologous bone grafts and guided bone regeneration are applied to improve quality and quantity of bone at the implantation site. Depending on the amount of lacking bone one- or two-stage procedures are required. Vertical bone augmentation has proven to be a challenge particularly in terms of bone volume stability...
June 7, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/28558821/comparative-evaluation-of-insertion-torque-and-mechanical-stability-for-self-tapping-and-self-drilling-orthodontic-miniscrews-an-in-vitro-study
#18
Michele Tepedino, Francesco Masedu, Claudio Chimenti
BACKGROUND: The aim of the present study was to evaluate the relationship between insertion torque and stability of miniscrews in terms of resistance against dislocation, then comparing a self-tapping screw with a self-drilling one. METHODS: Insertion torque was measured during placement of 30 self-drilling and 31 self-tapping stainless steel miniscrews (Leone SpA, Sesto Fiorentino, Italy) in synthetic bone blocks. Then, an increasing pulling force was applied at an angle of 90° and 45°, and the displacement of the miniscrews was recorded...
May 30, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/28526054/assessing-degradation-of-composite-resin-cements-during-artificial-aging-by-martens-hardness
#19
Stefan Bürgin, Nadja Rohr, Jens Fischer
BACKGROUND: Aim of the study was to verify the efficiency of Martens hardness measurements in detecting the degradation of composite resin cements during artificial aging. METHODS: Four cements were used: Variolink II (VL2), RelyX Unicem 2 Automix (RUN), PermaFlo DC (PDC), and DuoCem (DCM). Specimens for Martens hardness measurements were light-cured and stored in water at 37 °C for 1 day to allow complete polymerization (baseline). Subsequently the specimens were artificially aged by water storage at 37 °C or thermal cycling (n = 6)...
May 19, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/28490378/parotidectomy-using-the-harmonic-scalpel-ten-years-of-experience-at-a-rural-academic-health-center
#20
Marc A Polacco, Andrew M Pintea, Benoit J Gosselin, Joseph A Paydarfar
BACKGROUND: Parotidectomy is one of the most commonly performed procedures by otorhinolaryngologists. Traditionally dissection is performed with a combination of a steel scalpel and bipolar cautery; however, starting in the early 2000s, the Harmonic scalpel has provided an alternative method for dissection and hemostasis. The purpose of this study is to compare operative time, blood loss, complications, and cost between the Harmonic scalpel and steel scalpel plus bipolar cautery for superficial and total parotidectomy...
May 11, 2017: Head & Face Medicine
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