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Coronally positioned

Hyunglae Lee, Elliott J Rouse, Hermano Igo Krebs
The human ankle joint plays a critical role during walking and understanding the biomechanical factors that govern ankle behavior and provides fundamental insight into normal and pathologically altered gait. Previous researchers have comprehensively studied ankle joint kinetics and kinematics during many biomechanical tasks, including locomotion; however, only recently have researchers been able to quantify how the mechanical impedance of the ankle varies during walking. The mechanical impedance describes the dynamic relationship between the joint position and the joint torque during perturbation, and is often represented in terms of stiffness, damping, and inertia...
2016: IEEE Journal of Translational Engineering in Health and Medicine
Mohammed A Q Al-Saleh, Noura A Alsufyani, Manuel Lagravere, Brian Nebbe, Hollis Lai, Jacob L Jaremko, Paul W Major
OBJECTIVE: To evaluate the effect of magnetic resonance imaging-cone beam computed tomography (MRI-CBCT) image registration on inter- and intraexaminer consistency when evaluating temporomandibular joint (TMJ) internal derangement compared to MRI alone. METHODS: MRI and CBCT images of 25 patients (50 TMJs) were obtained and coregistered using mutual-information rigid image registration via Mirada XD software. Two experienced radiologists independently and blindly evaluated two types of images (MRI alone and MRI-CBCT registered images) at two different times (T1 and T2) for TMJ internal derangement, based on sagittal and coronal articular disc position in relation to the head of the condyle and the posterior slope of the articular eminence...
November 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Mitsuhiro Nishida, Takeo Nagura, Nobuyuki Fujita, Naobumi Hosogane, Takashi Tsuji, Masaya Nakamura, Morio Matsumoto, Kota Watanabe
BACKGROUND AND PURPOSE: Adolescent idiopathic scoliosis (AIS) is a structural, lateral curvature with rotation of the spine that develops around puberty. The influence of this spinal deformity on three-dimensional trunk movements during gait has not yet been elucidated. The aim of this study was to determine the influence of spinal curve pattern (single thoracic curve vs. single lumbar curve) on trunk kinematics during gait. METHODS: Twenty-two patients with a single thoracic curve (Lenke type 1) and 17 patients with a single lumbar curve (Lenke type 5) were included in this study...
October 11, 2016: Gait & Posture
Tae Suk Oh, Woo Shik Jeong, Taik Jin Chang, Kyung S Koh, Jong Woo Choi
BACKGROUND: It is difficult to restore original orbital contours because of their complex 3-dimensional structure. Moreover, slight implant malpositioning can result in enophthalmos or other complications. The authors describe our experience of using individualized prebent titanium-Medpor mesh implants and stereolithographic modeling in a series of patients who underwent orbital wall reconstruction. METHODS: A consecutive series of 104 patients with orbital fractures received computer simulation-designed prebent titanium-Medpor mesh implants insertion...
October 14, 2016: Journal of Craniofacial Surgery
Mark Driscoll, Carl-Éric Aubin, Alain Moreau, Yaroslav Wakula, Samira Amini, Stefan Parent
STUDY DESIGN: In vivo porcine model utilized to evaluate the influence of an intravertebral fusionless growth modulating device (hemi-staple) on intervertebral disks and growth plates. OBJECTIVE: To evaluate the radiographic and histologic changes in disks and growth plates with the purpose of measuring influence of the explored hemi-staple. SUMMARY OF BACKGROUND DATA: Fusionless growth modulation for the early treatment of scoliosis should insure the long-term viability of the intervertebral disk and successfully reduce or arrest local growth...
November 2016: Clinical Spine Surgery
Jacques Vermeulen
PURPOSE: To investigate the difference in accuracy between freehand and guided single-implant placement in situations with one or more missing teeth as performed by experienced surgeons. MATERIALS AND METHODS: A total of 80 implants were placed by 10 experienced clinicians in the anterior site of maxillary models, made of polyamide by selective laser sintering and mounted in a dummy head. Each clinician performed the same four single-implant cases via freehand surgery and then with a three-dimensional fabricated SIMPLANT Guide...
October 14, 2016: International Journal of Oral & Maxillofacial Implants
Giacomo Santoro, Giovanni Zucchelli, Enrico Gherlone
The case reports presented in this article describe a surgical approach for improving root coverage and regenerative parameters in deep intrabony defects associated with buccal gingival recession. A mandibular canine and a maxillary premolar were treated. The surgical technique consisted of a connective tissue graft (CTG) that was placed and sutured at the inner surface of a coronally advanced envelope flap (CAF), thickening the buccal soft tissue wall of the most coronal extension of the intrabony defect and treated with biomaterials as scaffold...
November 2016: International Journal of Periodontics & Restorative Dentistry
Anton P Lambers, Robert Jennings, Andrew T Bucknill
INTRODUCTION: Accurate prosthetic cup placement is important in total hip arthroplasty (THA) and can be influenced by patient positioning. This study aims to assess the accuracy of patient positioning prior to THA, describe a new technique of assessment, and evaluate the influence of body mass index (BMI) on positioning error. METHODS: A consecutive series of 37 patients undergoing unilateral THA were investigated. After patient positioning in lateral decubitus, a lateral fluoroscopic image through the table was taken...
October 8, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Yu-Wen Wang, Chin-Shun Wu, Guo-Yi Zhang, Chih-Han Chang, Kuo-Sheng Cheng, Wei-Jen Yao, Yu-Kang Chang, Tsair-Wei Chien, Li-Ching Lin, Keng-Ren Lin
PURPOSE: Minimal axial diameter (MIAD) in magnetic resonance imaging (MRI) was recognized as the most useful parameter in diagnosing lateral retropharyngeal lymph (LRPL) nodes in nasopharyngeal carcinoma (NPC). This study aims to explore the additional nodal parameters in MRI and positron emission tomography-computed tomography for increasing the prediction accuracy. MATERIALS AND METHODS: A total of 663 LRPL nodes were retrospectively collected from 335 patients with NPC...
2016: PloS One
Nello Martiniello, Martina Stefanini, Giovanni Zucchelli
BACKGROUND: In clinical practice it is common to observe adjacent multiple gingival recessions (MGRs) associated with noncarious cervical lesions (NCCLs). The aim of this 2-year case report was to describe the full-mouth treatment of a patient affected by MGRs and NCCLs, with a combined restorative-surgical approach using a coronally advanced flap (CAF) and a xenogeneic collagen matrix (CM). METHOD: Before surgery, a composite restoration filled the deepest portion of the NCCL defects and was finished at the level of the maximum root coverage (MRC)...
2016: International Journal of Esthetic Dentistry
Brett D Steineman, Samuel G Moulton, Tammy L Haut Donahue, Cristián A Fontboté, Christopher M LaPrade, Tyler R Cram, Chase S Dean, Robert F LaPrade
BACKGROUND: The anterolateral meniscal root (ALMR) has been reported to intricately insert underneath the tibial insertion of the anterior cruciate ligament (ACL). Previous studies have begun to evaluate the relationship between the insertion areas and the risk of iatrogenic injuries; however, the overlap of the insertions has yet to be quantified in the sagittal and coronal planes. PURPOSE: To investigate the insertions of the human tibial ACL and ALMR using scanning electron microscopy (SEM) and to quantify the overlap of the ALMR insertion in the coronal and sagittal planes...
October 11, 2016: American Journal of Sports Medicine
Ker-Kong Chen, Chau-Hsiang Wang, Chun-Chan Ting, Shin-I Wei, Je-Kang DU
This study investigated the exposed coronal superficial dentin of 28 human molars were immersed in strongly acidic electrolyzed water (AW group), neutral electrolyzed water (NW group), 5% sodium hypochlorite (negative control, NL group), or deionized water (positive control, DW group). Microhardness was determined at 5-min intervals for 60 min. Surface roughness, energy dispersive X-ray spectroscopy and scanning electron microscopy analyses were performed after 5 and 60 min. Reductions in microhardness were observed in the AW, NW and NL groups, with further decreases as immersion time increased...
2016: Dental Materials Journal
Shinsuke Nakayama, Hidemi Teramoto
 The umami taste amino acid, glutamate acts as a signaling molecule in multiple cellular systems in the body, including the brain and gastrointestinal tract. Therefore, glutamate may affect appetite by modulating gastrointestinal motility as well as through taste perception. In this study, we examined the effect of glutamate on gastric emptying and duodenal motility, by using rapid magnetic resonance imaging (MRI). Ten healthy male volunteers participated in the measurements. Abdominal coronal MR images were successively acquired after ingestion of a liquid meal with and without monosodium L-glutamate (MSG)...
2016: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
Oui Sik Yoo, Yong Seuk Lee, Myung Chul Lee, Jae Hong Park, Jae Won Kim, Doo Hoon Sun
BACKGROUND: After open wedge high tibial osteotomy (OWHTO), the proximal fragment resembles the anatomy of the proximal tibia that is aligned in the anterior-posterior direction and the distal fragment resembles the anatomy of the mid shaft that is aligned in the proximal-distal direction. In addition, the medial portion of the proximal fragment becomes aligned medially and the medial portion of the distal fragment, laterally, depending on the magnitude of the posterior opening gap. Therefore, there would be a mismatch between the post-correction bony surface and the previous pre-contoured plate geometry...
October 10, 2016: BMC Musculoskeletal Disorders
Marco Tallarico, Erta Xhanari, Milena Pisano, Giacomo De Riu, Antonio Tullio, Silvio Mario Meloni
PURPOSE: To test the hypothesis that there is no difference in clinical, radiographic and aesthetic outcomes positioning single post-extractive ultra-wide 7 mm-diameter implants or waiting 4 months to place implant, after molar extraction and the socket preservation procedure. MATERIAL AND METHODS: Patients requiring one implant-supported single restoration to replace a failed tooth in the molar region of both maxilla and mandible were selected. Patients were randomised according to a parallel group design into two arms: implant installation in fresh extraction sockets augmented with corticocancellous heterologous bone and porcine derma (group A) or delayed implant installation 4 months after tooth extraction and socket preservation using the same materials (group B)...
2016: European Journal of Oral Implantology
N-X Bonne, F Dubrulle, M Risoud, C Vincent
The surgical management of skull base lesions is difficult due to the complex anatomy of the region and the intimate relations between the lesion and adjacent nerves and vessels. Minimally invasive approaches are increasingly used in skull base surgery to ensure an optimal functional prognosis. Three-dimensional (3D) computed tomography (CT) reconstruction facilitates surgical planning by visualizing the anatomical relations of the lesions in all planes (arteries, veins, nerves, inner ear) and simulation of the surgical approach in the operating position...
October 5, 2016: European Annals of Otorhinolaryngology, Head and Neck Diseases
Kamal Deep, Frederic Picard, Joseph Baines
PURPOSE: The aim of this study was to assess the kinematics of arthritic knees prior to TKA. The hypothesis was that the arthritic knee follows distinct patterns with regard to deformity in coronal plane as it flexes from extended position. METHOD: Data from 585 consecutive arthritic knees that had undergone TKA using two non-image-based navigation systems were included in the study. Coronal plane alignment given by the femoro-tibial mechanical angle (FTMA) was recorded in extension, 30°, 60°, 90° and maximum flexion prior to making any bony cuts or ligamentous releases...
October 6, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Jianxiong Shen, Youxi Lin, Jinmei Luo, Yi Xiao
BACKGROUND: Scoliosis causes impairment of the respiratory and cardiovascular systems. Traditional pulmonary function tests only examine patients under static conditions. The aim of our study was to investigate the correlation between radiographic parameters and dynamic cardiopulmonary capacity in patients with idiopathic scoliosis. METHODS: Forty patients with idiopathic scoliosis were included in this prospective study from January 2014 to February 2016. The patients underwent full radiographic assessment of deformity, pulmonary function testing, and cardiopulmonary bicycle ergometer testing...
October 5, 2016: Journal of Bone and Joint Surgery. American Volume
Nerea Maiz, Ignacio Alonso, María Belar, Jorge Burgos, Ana Irasarri, Francisca S Molina, Catalina De Paco, José I Pijoan, Walter Plasencia, Carlota Rodó, M Angeles Rodríguez, Mauricio Tajada, Albert Tubau
OBJECTIVE: to evaluate the acquisition-related factors influencing the quality of the brain volumes for further study of advanced neurosonography. METHODS: This was a prospective multicentre study. Five centres were asked to include five cases each, acquiring two volumes per case, at different gestational ages. Ten operators performed an advanced neurosonography per case. The potential influence of the following factors on the number of evaluable structures was assessed: vaginal/ abdominal acquisition, position of the head, gestational age, subjective quality of the volume, and the acquiring operator itself...
October 1, 2016: Prenatal Diagnosis
Mathieu Mouhat, James Mercer, Lina Stangvaltaite, Ulf Örtengren
OBJECTIVES: To investigate how heat development in the pulp chamber and coronal surface of natural teeth with and without cusps subjected to irradiance using light-emitting diode (LED)-light-curing units (LCUs) is associated with (i) irradiance, (ii) time, (iii) distance, and (iv) radiant exposure. MATERIALS AND METHODS: Three different LED-LCUs were used. Their irradiance was measured with a calibrated spectrometer (BlueLight Analytics Inc., Halifax, Canada). An experimental rig was constructed to control the thermal environment of the teeth...
October 1, 2016: Clinical Oral Investigations
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