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https://www.readbyqxmd.com/read/27893557/changes-in-upper-airway-volume-following-orthognathic-surgery
#1
Lillian Marcussen, Kasper Stokbro, Esben Aagaard, Peter Torkov, Torben Thygesen
Reduced volume of the internal skeletal dimensions of the face is 1 of the main causes of obstructive sleep apnea, and attention to patients' airways is necessary when planning orthognathic treatment. This study aims to describe changes in upper airway volume following virtually planned orthognathic surgery.A retrospective pilot study was designed with 30 randomly selected patients (10 men and 20 women, aged 23.1 ± 6.8 years, molar-relations: 15 neutral, 8 distal, and 7 mesial). Cone-beam computed tomography scans were performed before surgery and 1 week following surgery...
November 23, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27891032/clinical-anatomy-and-significance-of-the-thoracic-intervertebral-foramen-a-cadaveric-study-and-review-of-the-literature
#2
Grigorios Gkasdaris, Grigorios Tripsianis, Konstantinos Kotopoulos, Stylianos Kapetanakis
INTRODUCTION: The literature is lacking information on the anatomy and the osseous dimensions of the thoracic intervertebral foramen (IVF). We describe the anatomy of the broader area, and we proceed with morphometric data of the vertebrae and the foramina. Depiction of these features is provided with imaging and illustrations. The purpose of this paper is to survey and present the anatomy of the foramen as a whole and provide baseline statistical data. MATERIALS AND METHODS: We review relevant literature, and we present data obtained from skeletal samples of known population and sex...
October 2016: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/27890154/effects-of-tool-handle-dimension-and-workpiece-orientation-and-size-on-wrist-ulnar-radial-torque-strength-usability-and-discomfort-in-a-wrench-task
#3
Iman Dianat, Soleyman Rahimi, Moein Nedaei, Mohammad Asghari Jafarabadi, Ali E Oskouei
The effects of tool handle dimension (three modified designs of wrenches with 30-50 mm diameter cylindrical handles and traditional design with rectangular cross-sectional (5 mm × 25 mm) handle), workpiece orientation (vertical/horizontal) and workpiece size (small/large) as well as user's hand size on wrist ulnar/radial (U/R) torque strength, usability and discomfort, and also the relationship between these variables were evaluated in a maximum torque task using wrenches. The highest and lowest levels of maximal wrist U/R torque strength were recorded for the 30 mm diameter handle and traditional wrench design, respectively...
March 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/27881315/cad-cam-implant-supported-fixed-complete-dental-prosthesis-with-titanium-milled-molars-a-clinical-report
#4
Abdulaziz AlHelal, Bader AlBader, Mathew T Kattadiyil, Antoanela Garbacea, Periklis Proussaefs
Implant-supported fixed complete dental prostheses have been associated with a high implant success rate in long-term studies. However, they have also been associated with a high frequency of prosthetic complications. The most frequent and primary prosthetic complication has been the fracture or wear of the occlusal surface of acrylic resin teeth that are typically attached to a metal framework. The design of the framework in this clinical report involved the incorporation of metal occlusal surfaces for the posterior first molars to the framework...
October 27, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27876309/vertical-breast-measurement-in-east-asian-women-a-guide-for-mastopexy-and-reduction-to-form-nonptotic-breasts-in-unilateral-prosthetic-breast-reconstruction
#5
Takashi Fujiwara, Kenji Yano, Yoshio Tanji, Masaya Nomura
BACKGROUND: Following unilateral breast cancer surgery, mastopexy and reduction of the unaffected breast are often performed to obtain symmetrical breasts. The use of implants in breast reconstruction results in a nonptotic breast. To achieve symmetry following the procedure, the unaffected side should be nonptotic too. However, no study has yet reported any indices for the design of mastopexy and reduction in this direction. We present a new method of preoperative design that uses vertical breast measurements to form nonptotic breasts according to individual breast shapes...
October 26, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/27872718/histoanatomical-study-of-the-lens-and-ciliary-body-in-ostrich-eye
#6
Mohammad Ali Ebrahimi Saadatlou, Ebrahimi Saadatlou Shahrouz
In the present study, the lenses and ciliary bodies of 20 ostrich eyes were studied macroscopically and microscopically. The histological slides were studied after staining by hematoxylin and eosin, Verhoeff, Van Gieson, and periodic acid-Schiff (PAS). Posterior surface of lens was more convex than its anterior surface. The average lens diameter and thickness were respectively measured as 1.43 ± 0.00 and 0.85 ± 0.00 cm. The average ciliary body thickness was measured as 1.48 ± 0.01 cm. In addition, the ciliary body was seen annular with mean horizontal and vertical external diameters as 4...
2016: Veterinary Research Forum
https://www.readbyqxmd.com/read/27872552/preserving-esthetics-occlusion-and-occlusal-vertical-dimension-in-a-patient-with-fixed-prostheses-seeking-dental-implant-treatment
#7
Abdulaziz Al Baker, Syed Rashid Habib, Mohammad D Al Amri
The preservation of esthetics and occlusal vertical dimension is critical in patients with existing full-arch tooth-retained fixed prostheses. This clinical report describes the provision of a maxillary immediate complete denture in a patient with a maxillary full-arch fixed dental prosthesis over nonviable teeth. The existing fixed dental prosthesis was used in the fabrication of the maxillary immediate complete denture to preserve esthetics. The technique involved recording and preservation of the occlusal vertical dimension and occlusion of the existing prosthesis...
October 2016: Saudi Dental Journal
https://www.readbyqxmd.com/read/27871707/cone-beam-computed-tomography-synthesized-cephalometric-study-of-operated-unilateral-cleft-lip-and-palate-and-noncleft-children-with-class-iii-skeletal-relationship
#8
Yifan Lin, Zhen Fu, Lian Ma, Weiran Li
INTRODUCTION: Our objective was to compare the craniofacial hard and soft tissue characteristics between children with operated unilateral cleft lip and palate (UCLP) and children with noncleft lip and palate (non-CLP) with a Class III skeletal relationship. METHODS: The study sample consisted of 30 subjects (18 boys, 12 girls; mean age, 10.21 years) affected by UCLP and 30 non-CLP subjects (17 boys, 13 girls; mean age, 10.19 years) as the control group. All subjects were in the mixed dentition with a Class III skeletal relationship...
November 2016: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/27871706/retrospective-study-of-maxillary-sinus-dimensions-and-pneumatization-in-adult-patients-with-an%C3%A2-anterior-open-bite
#9
Jesung Ryu, Sung-Hwan Choi, Jung-Yul Cha, Kee-Joon Lee, Chung-Ju Hwang
INTRODUCTION: The aim of this study was to evaluate differences in the maxillary sinus floor levels between adults with an anterior open bite and those without. METHODS: This retrospective study included 30 subjects: 15 adults with an anterior open bite (mean age, 21.5 ± 4.3 years) and 15 control subjects with normal occlusion (mean age, 21.7 ± 3.1 years). Cone-beam computed tomography and lateral cephalograms were analyzed before treatment. RESULTS: The open-bite group exhibited a significantly greater maxillary posterior alveolar height (P <0...
November 2016: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/27871705/applications-of-cone-beam-computed-tomography-to-assess-the-effects-of-labial-crown%C3%A2-morphologies-and-collum-angles-on%C3%A2-torque%C3%A2-for-maxillary-anterior-teeth
#10
Wei-Dong Kong, Jun-Yu Ke, Xiang-Quan Hu, Wu Zhang, Shu-Shu Li, Yi Feng
INTRODUCTION: Currently, cone-beam computed tomography (CBCT) has been widely used because of its capacity to evaluate the anatomic structures of the maxilla, mandible, and teeth in 3 dimensions. However, articles about the use of CBCT to evaluate the relationships between the morphology of individual teeth and torque expression remain rare. In this study, we aimed to determine the influence of labial crown morphologies and collum angles on torque for maxillary anterior teeth using CBCT...
November 2016: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/27871703/change-in-the-vertical-dimension-of-class-ii-division-1-patients-after-use-of-cervical-or-high-pull-headgear
#11
Erin Dobbins Zervas, Maria Therese S Galang-Boquiren, Ales Obrez, Maria Grace Costa Viana, Nelson Oppermann, Flavio Sanchez, Enrique Garcia Romero, Budi Kusnoto
INTRODUCTION: The goals of this study were to compare the effects that cervical and high-pull headgear have on the vertical dimensions in Class II Division 1 patients during phase 1 treatment and to compare these effects with untreated predicted growth for the sample population. METHODS: Pretreatment and posttreatment cephalometric radiographs of children who had undergone Class II Division 1 correction with cervical (n = 22) or high-pull headgear (n = 19) were analyzed for the measurements that describe the changes in the vertical component of growth and mandibular position...
November 2016: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/27866699/recording-the-trajectory-of-mouth-opening-and-closing-for-the-fabrication-of-an-occlusal-splint
#12
Jong-Eun Kim, Joo Hyun Kwon, Jee-Hwan Kim, June-Sung Shim
Various attempts have been made to transfer the transverse hinge axis and mandibular movement pattern to the mechanical articulator and to fabricate dental prostheses with the fewest errors. However, the occlusal adjustment of a dental prosthesis is always necessary to ensure a precise intraoral fit even when the facebow transfer technique is used in the cast mounting procedure. This is because the true hinge axis is not obtained when the facebow is applied to a patient who exhibits a variable mandible movement pattern rather than a single rotational axis...
November 17, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27866459/appearance-of-external-genital-organs-and-types-of-hymen-in-turkish-female-foetal-cadavers
#13
Gülnur Özgüner, Kenan Öztürk, Cemil Bilkay, Ahmet Dursun, Osman Sulak, Esra Koyuncu
The present study's purpose was to determine the size and morphometric development of the female external genital organs on foetal cadavers. Dimensions of labia majora, labia minora and clitoris, bilabial diameter, vertical and horizontal diameters of hymenal opening, distance between the external urethral orifice and hymenal opening, distance between the clitoris and external urethral orifice and anogenital distance were measured. The hymenal types were determined. Mean values of parameters according to gestational weeks, months and trimesters were calculated...
November 21, 2016: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/27859773/sub-50-nm-channel-vertical-field-effect-transistors-using-conventional-ink-jet-printing
#14
Tessy Theres Baby, Manuel Rommel, Falk von Seggern, Pascal Friederich, Christian Reitz, Simone Dehm, Christian Kübel, Wolfgang Wenzel, Horst Hahn, Subho Dasgupta
A printed vertical field-effect transistor is demonstrated, which decouples critical device dimensions from printing resolution. A printed mesoporous semiconductor layer, sandwiched between vertically stacked drive electrodes, provides <50 nm channel lengths. A polymer-electrolyte-based gate insulator infiltrates the percolating pores of the mesoporous channel to accumulate charge carriers at every semiconductor domain, thereby, resulting in an unprecedented current density of MA cm(-2) .
November 18, 2016: Advanced Materials
https://www.readbyqxmd.com/read/27858070/-evaluation-of-the-maxillary-basal-bone-and-molar-change-of-skeletal-class-ii-malocclusion-treated-by-sagittal-guidance-twin-block
#15
Ying-Yu Yi, Ning Zhao, Gang Shen
PURPOSE: To investigate the effects of sagittal-guidance Twin-block appliance on maxillary basal bone and buccal segment distalization in developing Angle Class II division 1 malocclusion. METHODS: The measurement data of anterior-posterior direction and vertical dimension between pretherapy and post-treatment, including 34 developing Angle Class II division 1 patients with sagittal-guidance Twin-block and non-extraction treatment, were quantitatively analyzed by X-ray cephalometry and Pancherz...
August 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/27856378/residual-craniofacial-growth-a-cephalometric-study-of-50-cases
#16
Youssef Oualalou, Malik Ahmed Antouri, André Pujol, Fatima Zaoui, Mohamed Faouzi Azaroual
Although orthodontists focus intensively on the diagnosis and treatment of their patients, they pay less attention to post-treatment development and the risk of relapse often caused by the late growth of the arches and bony base. The aim of this study, therefore, was to determine the growth changes, which can affect craniofacial dimensions in subjects aged between 13 and 17 years. A retrospective longitudinal study including 50 patients (31 girls and 19 boys) whose end of orthodontic treatment coincided with the end of the post-pubertal period (13-14 years) involved a comparison of the cephalometric analyses for each patient between T1 (end of orthodontic treatment) and T2 (end of retention)...
November 14, 2016: International Orthodontics
https://www.readbyqxmd.com/read/27837264/study-of-the-mandibular-incisive-canal-anatomy-using-cone-beam-computed-tomography
#17
Sergey Lvovich Kabak, Natallia Victorovna Zhuravleva, Yuliya Michailovna Melnichenko, Nina Alexandrovna Savrasova
PURPOSE: The aim of this study was to identify the range of individual variability in dimensions and topography of the mandibular incisive canal (MIC) in vivo. METHODS: One hundred cone beam computed tomography (CBCT) scans of patients from dental outpatient hospitals of Minsk, Belarus were performed on Galileos GAX5 using standard exposure and patient positioning protocol. Reformatted panoramic and sagittal CBCT images were analyzed. RESULTS: The MIC was visualized in 92% of CBCT images...
November 11, 2016: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/27837043/reliability-of-sargent-jump-test-in-4-to-5-year-old-children
#18
Carlos AyánPérez, José M CancelaCarral, Joaquín Lago-Ballesteros, Iván Martínez-Lemos
We assessed the test-retest reliability of the Sargent jump (VJ) for vertical jumping performed by 4 and 5 years old pre-schoolers. The VJ was administered three times (familiarization, test, and retest) to 163 children (mean age: 4.48 ± 0.5 years; 55.8% girls). The results were compared with those obtained in the standing long jump (SLJ) and in the 25 -m dash test to identify how its performance correlated with other measures of leg power. Systematic change in the mean and retest correlations with these other measures were used to help analyze VJ test-retest reliability...
November 11, 2016: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/27836765/nasal-breathing-and-the-vertical-dimension-a-cephalometric-study
#19
Amal El Aouame, Asmaa Daoui, Farid El Quars
INTRODUCTION: The aim of this work was to perform a cephalometric analysis of the craniofacial parameters and natural head posture of mouth-breathers compared with control subjects, and to study the relationship between nose-breathing and the vertical dimension. MATERIAL AND METHODS: The headfilms taken at start of treatment of 53 cases (28 girls, 25 boys) aged 9 to 30 who consulted the dento-facial orthopedic department of the Ibn Rochd Casablanca dental consultation and treatment center were studied...
November 8, 2016: International Orthodontics
https://www.readbyqxmd.com/read/27836333/the-snarc-effect-in-two-dimensions-evidence-for-a-frontoparallel-mental-number-plane
#20
Philipp Nikolaus Hesse, Frank Bremmer
The existence of an association between numbers and space is known for a long time. The most prominent demonstration of this relationship is the spatial numerical association of response codes (SNARC) effect, describing the fact that participants' reaction times are shorter with the left hand for small numbers and with the right hand for large numbers, when being asked to judge the parity of a number (Dehaene et al., J. Exp. Psychol., 122, 371-396, 1993). The SNARC effect is commonly seen as support for the concept of a mental number line, i...
November 8, 2016: Vision Research
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