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https://www.readbyqxmd.com/read/29016762/diagnosis-of-tooth-ankylosis-using-panoramic-views-cone-beam-computed-tomography-and-histological-data-a-retrospective-observational-case-series-study
#1
Franziska Ducommun, Michael M Bornstein, Dieter Bosshardt, Christos Katsaros, Karl Dula
Objectives: The aim of this study was to determine whether cone beam computed tomography is a reliable radiological method to diagnose tooth ankylosis. Materials and methods: A series of teeth clinically diagnosed as ankylosed were collected after extraction in a private practice from 2009 to 2015 and analyzed retrospectively. Inclusion criteria comprised permanent molars extracted due to failed tooth eruption in the absence of any visible mechanical obstruction, existing panoramic view (PV), and cone beam computed tomography (CBCT) and histological sections of sufficient quality...
August 22, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28976936/spot-bonding-and-full-bonding-techniques-for-fiber-reinforced-composite-frc-and-metallic-retainers
#2
Andrea Scribante, Paola Gandini, Paola Tessera, Pekka K Vallittu, Lippo Lassila, Maria Francesca Sfondrini
Fiber reinforced Composite (FRC) retainers have been introduced as an aesthetic alternative to conventional metallic splints, but present high rigidity. The purpose of the present investigation was to evaluate bending and fracture loads of FRC splints bonded with conventional full-coverage of the FRC with a composite compared with an experimental bonding technique with a partial (spot-) resin composite cover. Stainless steel rectangular flat, stainless steel round, and FRC retainers were tested at 0.2 and 0...
October 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28968836/limited-reliability-of-radiographic-assessment-of-spinal-progression-in-ankylosing-spondylitis
#3
Sibel Zehra Aydin, Esen Kasapoglu Gunal, Esra Kurum, Servet Akar, Halit Eyyup Mungan, Fatma Alibaz-Oner, Robert G Lambert, Pamir Atagunduz, Helena Marzo Ortega, Dennis McGonagle, Walter P Maksymowych
Objectives: Conventional radiography is key to assessing AS-related spinal involvement and has become increasingly important given that spinal fusion may continue under biologic therapy. We aimed to compare the reliability of radiographic scoring of the spine by using different approaches to understand how different readers agree on overall scores and on individual findings. Method: Six investigators scored 68 plain radiographs of the cervical and lumbar spine of 34 patients with a 2-year interval, for erosions, sclerosis, squaring, syndesmophytes and ankyloses using the Spondyloarthritis Radiography (SPAR) module...
September 15, 2017: Rheumatology
https://www.readbyqxmd.com/read/28944904/triptolide-inhibits-proliferation-differentiation-and-induces-apoptosis-of-osteoblastic-mc3t3%C3%A2-e1-cells
#4
Wei Ji, Shijia Liu, Xia Zhao, Yunke Guo, Sha Xia, Yueyang Lu, Menyun Yin, Xiao Xu
Ankylosing spondylitis (AS) is characterized by the formation of bony spurs. Treatment of the resulting ankylosis, excessive bone formation and associated functional impairment, remain the primary therapeutic aims in research regarding this condition. Triptolide is the primary active component of the perennial vine Tripterygium wilfordii Hook. f., and has previously been demonstrated to exert anti‑tumor activities including inhibition of cell growth and the induction of apoptosis, however, the effect of triptolide on osteoblasts remains to be elucidated...
September 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28938320/giant-peripheral-temporomandibular-osteoma-with-immediate-reconstruction-of-mandible
#5
Cláiton Heitz, Ricardo Augusto Conci, Flávio Henrique Silveira Tomazi, Guilherme Pivatto Louzada, Michel Martins Guarenti, Guilherme Genehr Fritscher
Osteoma is a benign osteogenic tumor, which is characterized the slow-growing proliferation of compact or cancellous bone. The etiology of the lesion is not well established. Among the hypotheses, the following are related: a traumatic factor, infectious processes, or true neoplasm due to the origin of cartilaginous cells. It can present at any age, usually in young adult individuals, with equal prevalence in both sexes. The clinical characteristics of the peripheral osteoma are represented by slow asymptomatic growth, which leads to swelling and, thus, facial asymmetry...
September 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28932154/malpositioned-canine-treatment-with-autotransplantation-and-laser
#6
Serap Keskin Tunc, Mehmet Savas Kayasan, Esma Ozeroglu, Cennet Neslihan Eroglu
Children and young adults often have tooth loss due to congenital tooth deficiency, trauma, or caries. Autotransplantation has many benefits. The transplanted tooth can be moved orthodontically, maintains alveolar bone growth potential during eruption, and functional periodontal ligament function also permits tooth eruption, allows the defected areas to be filled with the bones; gingival contour is much more successful than the one obtained with prosthesis. In this paper, treatment steps and follow-up results of autotransplantation case supported with biostimulation are mentioned...
July 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28922248/maxillary-corticotomies-with-bone-to-bone-retraction-and-mandibular-segmental-osteotomy-for-correcting-an-anterior-double-protrusion
#7
Kyung A Kim, Baek-Soo Lee, Ayse Selenge Akbulut, Seong-Hun Kim, Gerald Nelson
BACKGROUNDS: This article presents maxillary corticotomies with bone-to-bone retraction and anterior segmental osteotomy (ASO) as an alternative to 2-jaw orthognathics in the bimaxilary protrusion patient with partially anchylosed maxillary anterior tooth. METHODS: The 18-year-old male, complaining of anterior protrusion, with a trauma history to the maxillary central incisor, and requesting rapid treatment, was treated with maxillary corticotomies in 2 stages and ASO in the mandible...
September 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28913396/severe-heterotopic-ossification-and-stiffness-after-revision-knee-surgery-for-a-periprosthetic-fracture
#8
Maher Baroudi, Pascale Derome, Michel Malo
Although heterotopic ossification (HO) after total hip arthroplasty has been very well described as a cause of disability, much less was written on clinical dysfunction of HO after total knee arthroplasty (TKA). To the extent of our knowledge, there has been no published case of complete bony ankylosis, secondary to severe generalized HO, after a TKA. We present the case of a 67-year-old female treated successfully, with surgical excision of ossification and TKA revision surgery, using a rotating hinge system...
September 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/28904322/a-preliminary-study-of-effects-of-low-intensity-pulsed-ultrasound-lipus-irradiation-on-dentoalveolar-ankylosis
#9
Tomoyasu Kiyokawa, Mitsuru Motoyoshi, Mizuki Inaba, Remi Sano, Akari Saiki, Go Torigoe, Masatake Asano, Noriyoshi Shimizu
The purpose of this experiment was to investigate whether low-intensity pulsed ultrasound (LIPUS) irradiation can inhibit dentoalveolar ankylosis in transplanted rat teeth. LIPUS irradiation (the pulsed ultrasound signal had a frequency of 3.0 MHz, a spatial average intensity of 30 mW/cm(2), and a pulse ratio of 1:4) was performed on the face over the re-planted teeth of rats for 4 weeks. After the rats were euthanized, we measured mobility (Periotest value [PTV]) of the transplanted and control teeth using a Periotest...
2017: Journal of Oral Science
https://www.readbyqxmd.com/read/28894334/spondyloarthropathy-diagnostic-imaging-criteria-for-the-detection-of-sacroiliitis
#10
Moacir Ribeiro de Castro, Sonia de Aguiar Vilela Mitraud, Marina Celli Francisco, Artur da Rocha Corrêa Fernandes, Eloy de Ávila Fernandes
Diagnostic imaging is crucial to the diagnosis and monitoring of spondyloarthropathies. Magnetic resonance imaging is the most relevant tool for the early detection of sacroiliitis, allowing the institution of therapeutic strategies to impede the progression of the disease. This study illustrates the major criteria for a magnetic resonance imaging-based diagnosis of spondyloarthropathy. The cases selected here present images obtained from the medical records of patients diagnosed with sacroiliitis over a two-year period at our facility, depicting the active and chronic, irreversible forms of the disease...
July 2017: Radiologia Brasileira
https://www.readbyqxmd.com/read/28891897/simultaneous-reconstruction-of-both-facial-paralysis-and-temporomandibular-joint-ankylosis-with-a-composite-flap-from-dorsum-of-foot
#11
Osman Akdag, Seyda Guray Evin, Mehtap Karamese, Zekeriya Tosun
Free extensor digitorum brevis muscle flap in facial paralysis, and the second metatarsophalangeal joint flap is used at the temporomandibular joint reconstruction for a long time. Anatomically, these flaps can be harvested through even the same pedicle flap even on the same regions. Literature is available of their usage along with the use of hand and upper extremity reconstruction. Unlike this example, the authors have used these flaps in maxillofacial region where facial paralysis and temporomandibular joint reconstruction will be performed together...
October 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28885292/incidence-and-risk-factors-of-anterior-arch-fracture-of-the-atlas-following-c1-laminectomy-without-fusion
#12
Takayoshi Shimizu, Bungo Otsuki, Shunsuke Fujibayashi, Shinji Kumamoto, Yasukazu Hijikata, Yu Shimizu, Mitsuru Takemoto, Masato Ota, Hideo Ito, Shuichi Matsuda
STUDY DESIGN: A retrospective multi-center study OBJECTIVE.: To identify the incidence of anterior arch fracture (AAF) of the atlas following C1 (first cervical vertebra) laminectomy without fusion, and its risk factors. SUMMARY OF BACKGROUND DATA: C1 laminectomy without fusion is a widely accepted surgical procedure performed to decompress the spinal cord that is compromised at the C1/C2 level, but without instability. Several case series have reported spontaneous AAF following this procedure...
September 6, 2017: Spine
https://www.readbyqxmd.com/read/28879048/no-evidence-for-a-direct-role-of-hla-b27-in-pathological-bone-formation-in-axial-spa
#13
Barbara Neerinckx, Simon Kollnberger, Jacqueline Shaw, Rik Lories
OBJECTIVE: The strong genetic association between HLA-B27 and ankylosing spondylitis has been known for over 40 years. HLA-B27 positivity is possibly associated with severity of ankylosis. We studied the in vitro and in vivo impact of HLA-B27 in models of chondrogenesis and osteogenesis. METHODS: Different in vitro differentiation systems were used to mimic endochondral and direct bone formation. ATDC5 cells and primary human periosteum-derived cells (hPDCs) were transduced with lentiviral vectors expressing HLA-B27 or HLA-B7...
2017: RMD Open
https://www.readbyqxmd.com/read/28872507/protection-of-the-temporomandibular-joint-during-syndromic-mandibular-distraction-with-a-novel-condylar-offloading-device
#14
Sagar T Mehta, Neal Moores, Duane Yamashiro, Faizi Siddiqi, Barbu Gociman
Mandibular distraction for severe micrognathia in syndromic patients often leads to temporomandibular joint (TMJ) ankylosis, which requires further interventions to regain joint motion. The increased incidence of postdistraction ankylosis is likely related to increased prevalence of preoperative joint pathology in syndromic micrognathic patients. Previous studies have demonstrated that offloading the pressure on the condyle during the distraction process can prevent such TMJ pathology. In this article, the authors describe a successful new method for offloading the condyle to prevent postdistraction ankylosis using an external TMJ offloading device...
October 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28866368/overlapping-functions-of-bone-sialoprotein-and-pyrophosphate-regulators-in-directing-cementogenesis
#15
M Ao, M B Chavez, E Y Chu, K C Hemstreet, Y Yin, M C Yadav, J L Millán, L W Fisher, H A Goldberg, M J Somerman, B L Foster
Although acellular cementum is essential for tooth attachment, factors directing its development and regeneration remain poorly understood. Inorganic pyrophosphate (PPi), a mineralization inhibitor, is a key regulator of cementum formation: tissue-nonspecific alkaline phosphatase (Alpl/TNAP) null mice (increased PPi) feature deficient cementum, while progressive ankylosis protein (Ank/ANK) null mice (decreased PPi) feature increased cementum. Bone sialoprotein (Bsp/BSP) and osteopontin (Spp1/OPN) are multifunctional extracellular matrix components of cementum proposed to have direct and indirect effects on cell activities and mineralization...
September 1, 2017: Bone
https://www.readbyqxmd.com/read/28855535/evaluation-of-the-condyle-remodeling-after-lateral-arthroplasty-in-growing-children-with-temporomandibular-joint-ankylosis
#16
XiuJuan Yang, Chuan Lu, MinJun Dong, DongMei He, Chi Yang, YiHui Hu
Temporomandibular joint (TMJ) ankylosis in growing patients can cause both mouth opening limitation and jaw bone deformity. Lateral arthroplasty (LAP) can restore the medially displaced condyle and thus keep its growth potential. But can the condyle grow as normal is unknown. This study was to evaluate the long-term result after LAP in growing children. Patients from 2010 to 2014 were evaluated. Their CT data within 1 week after operation and during at least 1-year follow-ups were measured by ProPlan CMF 1...
August 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28853235/efficiency-of-different-storage-media-for-avulsed-teeth-in-animal-models-a-systematic-review
#17
Daniele L Longo, Ana C Fumes, Erika C Küchler, Francisco W G Paula-Silva, Paulo Nelson Filho, Léa A B Silva
BACKGROUND/AIMS: Tooth avulsion consists of the complete displacement of a tooth from the alveolar socket. When immediate replantation is not possible, the avulsed tooth should be kept in a storage medium capable of maintaining the viability of periodontal ligament (PDL) cells on the root surface. However, there is no consensus on the best storage medium able to prevent sequels such as ankylosis and tooth resorption. The aim of this study was to perform a systematic review to evaluate the in vivo effectiveness of different storage media for avulsed teeth...
August 29, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28822824/using-spinopelvic-parameters-to-estimate-residual-lumbar-lordosis-assuming-previous-lumbosacral-fusion-a-study-of-normative-values
#18
Hwee Weng Dennis Hey, Kimberly-Anne Tan, Shashidhar Bangalore Kantharajanna, Alex Quok An Teo, Chloe Xiaoyun Chan, Ka-Po Gabriel Liu, Hee-Kit Wong
BACKGROUND CONTEXT: Pelvic Incidence (PI) = Pelvic Tilt (PT) + Sacral Slope (SS) is an established trigonometric equation which can be expanded from studying the fixed pelvis with the spine to a fixed spinopelvic complex with the remnant spine, in scenarios of spinopelvic fusion or ankylosis. For a fixed spinopelvic complex, we propose the equation termed: Lumbar Incidence (LI) = Lumbar Tilt (LT) + Lumbar Slope (LS). PURPOSE: To establish reference values for LI, LT and LS at each lumbar vertebral level, and to show how LI can be used to determine rLL...
August 16, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28810926/the-association-between-sonographic-enthesitis-and-radiographic-damage-in-psoriatic-arthritis
#19
Ari Polachek, Richard Cook, Vinod Chandran, Dafna D Gladman, Lihi Eder
BACKGROUND: To examine the association between sonographic enthesitis and the severity of radiographic features of damage in the peripheral and axial joints in psoriatic arthritis (PsA). METHODS: A cross-sectional analysis was conducted in patients with PsA. The MAdrid Sonography Enthesitis Index (MASEI) scoring system was used to quantify the extent of sonographic entheseal abnormalities. Radiographic damage in the peripheral joints and spine was assessed by the modified Steinbrocker score (mSS), Modified New York Criteria for sacroiliitis, and the modified Stoke Ankylosing Spondylitis Spine Score (mSASSS)...
August 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28779799/editorial-commentary-danger-zone-the-posteromedial-elbow-don-t-go-looking-for-trouble-and-it-won-t-find-you-arthroscopic-management-of-the-arthritis-elbow
#20
EDITORIAL
Felix H Savoie
Arthroscopy for elbow arthritis has been used by this author for 30 years. There are many benefits to arthroscopic management of the arthritic elbow. A complete understanding of the pathology is essential to correct surgical management. Excision of spurs and osteophytes, deepening of the coronoid or olecranon fossa, removal of loose bodies, and synovectomy are essential. Arthritis is usually not a capsular problem, so the releases needed for post-traumatic ankylosis takedown are not usually necessary in the arthritic elbow...
August 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
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