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https://www.readbyqxmd.com/read/28727465/clinical-management-of-type-3-recession-defects-with-immediate-implant-and-provisional-restoration-therapy-a-case-report
#1
Dennis P Tarnow, Stephen J Chu
Type 3 extraction sockets present a unique challenge in that they possess gingival recession indicative of facial hard- and soft-tissue loss. When teeth present with prior disease requiring removal and implant replacement, the treatment strategy incorporates palatal implant positioning as well as proper restorative contour management to compensate for the recession defect, thereby allowing the gingival tissues to heal in the correct 3-dimensional position. This article describes the case of a patient with a nonrestorable maxillary right central incisor with internal resorption...
July 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28727234/kynurenine-a-tryptophan-metabolite-that-accumulates-with-age-induces-bone-loss
#2
Mona El Refaey, Meghan E McGee-Lawrence, Sadanand Fulzele, Eileen J Kennedy, Wendy B Bollag, Mohammed Elsalanty, Qing Zhong, Ke-Hong Ding, Nathaniel G Bendzunas, Xing-Ming Shi, Jianrui Xu, William D Hill, Maribeth H Johnson, Monte Hunter, Jessica L Pierce, Kanglun Yu, Mark W Hamrick, Carlos M Isales
Age-dependent bone loss occurs in humans and in several animal species, including rodents. The underlying causal mechanisms are probably multifactorial, although an age-associated increase in the generation of reactive oxygen species has been frequently implicated. We previously reported that aromatic amino acids function as antioxidants and are anabolic for bone and that they may potentially play a protective role in an aging environment. We hypothesized that upon oxidation the aromatic amino acids would not only lose their anabolic effects but also potentially become a catabolic byproduct...
July 20, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28727179/overexpression-of-g%C3%AE-s-in-murine-osteoblasts-in-vivo-leads-to-increased-bone-mass-and-decreased-bone-quality
#3
Lucia Zhang, Kim S Sugamori, Colin Claridge, Ariana Dela Cruz, Marc D Grynpas, Jane Mitchell
GαS is a heterotrimeric G protein that transduces signals from activated G protein-coupled receptors on the cell surface to stimulate adenylyl cyclase/cyclic AMP signaling. GαS plays a central role in mediating numerous growth and maintenance processes including osteogenesis and bone turnover. Decreased GαS expression or activating mutations in GαS both affect bone suggesting that modulating GαS protein levels may be important for bone health and development. To examine the effects of increased osteoblastic GαS expression on bone development in vivo, we generated transgenic mice with GαS over-expression in osteoblasts (HOM-Gs mice) driven by the 3...
July 20, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28724862/clinical-and-radiographic-success-of-electrosurgical-pulpectomy-in-primary-teeth
#4
Rasoul Sahebalam, Alireza Sarraf, Hamid Jafarzadeh, Maryam Jouybari-Moghaddam, Samane Seyed-Musavi
A pulpectomy requires the swift extraction of the inflamed tissue. Moreover, the speed of treatment is especially important in the case of uncooperative children. Conventional pulpectomies, however, often require an extended treatment period, which can therefore cause problems with such patients. Electrosurgical methods have been applied to pulpotomies for a number of years. However, to the best of our knowledge, no studies to date have assessed its application to pulpectomies. The aim of this study was to compare clinical and radiographic success rates over a 6-month follow-up period between conventional and electrosurgical pulpectomies...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28724055/bone-turnover-after-bariatric-surgery
#5
Thalita Lima Melo, Leila Froeder, Leandro da Cunha Baia, Ita Pfeferman Heilberg
Objective: The aim of the present study was to evaluate parameters of bone and mineral metabolism after bariatric surgery. Subjects and methods: This sectional study included data from medical records from 61 bariatric surgery (BS) patients (minimum period of 6 months after the procedure) and from 30 class II and III obese patients as a control group (Cont), consisting of daily dietary intake of macronutrients, calcium and sodium, serum 25(OH)D and parathyroid hormone (PTH) and other biochemical serum and urinary parameters...
July 13, 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28722834/effects-of-gip-glp-1-and-glp-1ras-on-bone-cell-metabolism
#6
Morten S S Hansen, Michaela Terencova, Jacob Frølich, Moustapha Kassem, Morten Frost
The relationship between gut and skeleton is increasingly recognised as part of the integrated physiology of the whole organism. The incretin hormones gastric inhibitory polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) are secreted from the intestine in response to nutrient intake and exhibit several physiological functions including regulation of islet hormone secretion and glucose levels. A number of GLP-1 receptor agonists (GLP-1RAs) are currently used in treatment of type 2 diabetes and obesity. However, GIP and GLP-1 cognate receptors are widely expressed suggesting that incretin hormones mediate effects beyond control of glucose homeostasis, and reports on associations between incretin hormones and bone metabolism have emerged...
July 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28721601/high-survivorship-and-few-complications-with-cementless-total-wrist-arthroplasty-at-a-mean-followup-of-9-years
#7
Joseph A Gil, Robin N Kamal, Eugene Cone, Arnold-Peter C Weiss
BACKGROUND: Total wrist arthroplasty (TWA) has been described as traditionally being performed with fixation in the radius and carpus with cement. The TWA implant used in our series has been associated with promising results in studies with up to 6 years followup; however, studies evaluating survivorship, pain, and function with this implant are limited. QUESTION/PURPOSE: (1) To report ROM and pain scores after wrist reconstruction with cementless fourth-generation TWA at a mean followup of 9 years (range, 4...
July 18, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28721562/reduced-energy-availability-implications-for-bone-health-in-physically-active-populations
#8
REVIEW
Maria Papageorgiou, Eimear Dolan, Kirsty J Elliott-Sale, Craig Sale
PURPOSE: The present review critically evaluates existing literature on the effects of short- and long-term low energy availability (EA) on bone metabolism and health in physically active individuals. METHODS: We reviewed the literature on the short-term effects of low EA on markers of bone metabolism and the long-term effects of low EA on outcomes relating to bone health (bone mass, microarchitecture and strength, bone metabolic markers and stress fracture injury risk) in physically active individuals...
July 18, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28720338/complete-denture-fabrication-using-piezography-and-cad-cam-a-clinical-report
#9
Chikahiro Ohkubo, Hidemasa Shimpo, Ai Tokue, Eun-Jin Park, Tae Hyung Kim
To provide maxillary and mandibular complete dentures for a patient with severe ridge resorption, the denture space was recorded using the piezography technique. After the piezographic space was scanned, a virtual tooth arrangement and festooning were performed within the space using computer-aided design software. The denture bases were milled from a polymethylmethacrylate resin block using computer-aided manufacturing, and commercially available denture teeth were bonded with resin adhesive. Using the piezography technique described, physiologically appropriate complete dentures were fabricated based on the neutral zone concept...
July 15, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28720305/ecto-5-nucleotidase-cd73-regulates-bone-formation-and-remodeling-during-intramembranous-bone-repair-in-aging-mice
#10
Vivian Bradaschia-Correa, Anne M Josephson, Alexander J Egol, Matthew M Mizrahi, Kevin Leclerc, Jason Huo, Bruce N Cronstein, Philipp Leucht
Ecto-5'-nucleotidase (CD73) generates adenosine, an osteoblast activator and key regulator of skeletal growth. It is unknown, however, if CD73 regulates osteogenic differentiation during fracture healing in adulthood, and in particular how CD73 activity regulates intramembranous bone repair in the elderly. Monocortical tibial defects were created in 46-52-week-old wild type (WT) and CD73 knock-out mice (CD73(-/-)) mice. Injury repair was analyzed at post-operative days 5, 7, 14 and 21 by micro-computed tomography (micro-CT), histomorphometry, proliferating cell nuclear antigen (PCNA) immunostaining, alkaline phosphatase (ALP) and tartrate-resistant acid phosphatase (TRAP) histochemistry...
July 4, 2017: Tissue & Cell
https://www.readbyqxmd.com/read/28719946/cell-assisted-lipotransfer-friend-or-foe-in-fat-grafting-systematic-review-and-meta-analysis
#11
REVIEW
J Laloze, A Varin, J Gilhodes, N Bertheuil, J L Grolleau, J Brie, J Usseglio, L Sensebe, T Filleron, B Chaput
BACKGROUND: Autologous fat grafting is a common procedure for soft-tissue reconstruction but is associated with a graft resorption rate ranging from 20% to 80%. To improve the fat graft survival rate, a new technique, called cell-assisted lipotransfer (CAL), was developed. With CAL, fat is injected along with adipose-derived stromal cells (ASCs) that are assumed to improve fat survival rate. We conducted an evidence-based meta-analysis to evaluate the efficacy and safety of CAL as compared with conventional autologous fat grafting (non-CAL)...
July 18, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28717917/-acute-right-sided-upper-abdominal-pain-in-a-46-year-old-woman
#12
M Bauder, A Fiala, C Klinger, W Kersjes, K Caca
A 46-year-old woman presented with acute abdominal pain in the right upper quadrant. Esophagogastroduodenoscopy revealed a duodenal stenosis within the horizontal part of the duodenum. Based on the findings of abdominal computed tomography (CT), endosonography, Doppler duplex sonography and angiography, the diagnosis of an aneurysm of a branch of the inferior pancreaticoduodenal artery was established. This arterial branch was part of a collateral circulation between the superior mesenteric artery and the proper hepatic artery caused by obturation of the celiac artery...
July 17, 2017: Der Internist
https://www.readbyqxmd.com/read/28717608/computerized-tomographic-assessment-and-clinical-evaluation-in-shoulder-instability-treated-with-the-latarjet-patte-procedure-using-one-screw-and-washer
#13
Fabio Cautiero, Raffaele Russo, Francesco Di Pietto, Giuseppe Sabino
BACKGROUND: The Latarjet-Patte (L-P) procedure is indicated in anterior instability of the shoulder with a glenoid or humeral bone loss. Our purpose is to evaluate clinical outcome and computerized tomographic (CT) findings as position and resorption of the graft and articular degeneration. METHODS: From 2006 to 2009 50 patients underwent to L-P, 48 was contacted by telephone and 26 were available for follow-up (3 to 6 years). Quick-DASH and Rowe scores was used, 22 patients perform CT...
January 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28717298/ameloblastic-carcinoma-a-rare-malignant-tumour-in-maxillofacial-region
#14
Pushkar Devidas Gawande, Kiran Khande, Gaurav Agrawal, Amita Aditya
Ameloblastic carcinoma (AC) is a rare malignant odontogenic tumor with poor prognosis. It has an aggressive clinical course with extensive local destruction. It occurs primarily in the mandible. It may clinically present as a cystic lesion with benign clinical feature or as a large mass with ulceration, significant bone resorption and mobility of teeth in the affected region. Reliable evidence of it's biological activity along with extensive local destruction, direct extension of tumor, lymph node involvement and metastasis to various sites (frequently lung) have been reported...
September 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28716975/metabolic-phenotype-in-the-mouse-model-of-osteogenesis-imperfecta
#15
Iris Boraschi-Diaz, Josephine T Tauer, Omar El Rifai, Delphine Guillemette, Geneviève Lefebvre, Frank Rauch, Mathieu Ferron, Svetlana V Komarova
Osteogenesis Imperfecta (OI) is the most common heritable bone fragility disorder, usually caused by dominant mutations in genes coding for collagen type I alpha chains, COL1A1 or COL1A2. Osteocalcin is now recognized as a bone-derived regulator of insulin secretion and sensitivity and glucose homeostasis. Since OI is associated with increased rates of bone formation and resorption, we hypothesized that the levels of undercarboxylated osteocalcin are increased in OI. The objective of this study was to determine changes in osteocalcin and to elucidate the metabolic phenotype in the Col1a1Jrt/+ mouse, a model of dominant OI caused by a Col1a1 mutation...
July 17, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28713971/systematic-analysis-of-lncrnas-mirnas-and-mrnas-for-the-identification-of-biomarkers-for-osteoporosis-in-the-mandible-of-ovariectomized-mice
#16
Lingyu Hao, Jiayao Fu, Yawen Tian, Junhua Wu
Osteoporosis is a complex and multifactorial disease caused by an imbalance between bone formation and resorption. Post‑menopausal women with endogenous estrogen deficiency suffer from systemic bone loss and osteoporosis, and are at high risk of this affecting the jaw bones. MicroRNAs (miRNAs or miRs) have been implicated in the mechanisms of metabolic bone diseases and are expressed at differential levels in alveolar bone following ovariectomy. In the present study, we systematically analyzed the expression profiles of miRNAs, mRNAs and long non‑coding RNA (lncRNAs) in the mandible of ovariectomized (OVX) mice...
July 10, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28713904/bisphosphonate-inhibits-the-expression-of-cyclin%C3%A2-a2-at-the-transcriptional-level-in-normal-human-oral-keratinocytes
#17
Rachel S Lee, Suhjin Sohn, Ki-Hyuk Shin, Mo K Kang, No-Hee Park, Reuben H Kim
Nitrogen-containing bisphosphonates (N-BPs) are the most widely used anti-resorptive agents in the treatment of bone-related diseases. N-BPs inhibit bone resorption by specifically targeting osteoclasts, bone-resorbing cells. However, soft tissue toxicity, such as oral or gastrointestinal (GI) ulcerations has frequently been reported in N-BP users, suggesting that N-BPs may also directly target cells other than osteoclasts. Previously, we reported that BPs inhibit proliferation without inducing the apoptosis of normal human oral keratinocytes (NHOKs)...
July 12, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28713743/bone-ring-augmentation-around-immediate-implants-a-clinical-and-radiographic-study
#18
Girish B Giraddi, Aamir Malick Saifi
PURPOSE: The purpose of this study was to evaluate the efficacy of bone ring augmentation technique for three-dimensional augmentation of severely defective sockets along with placement of immediate dental implants. MATERIALS AND METHODS: A clinical study was conducted on 14 patients with 15 defective sockets requiring extractions and immediate implant placement. Following extraction, bone ring with an implant osteotomy, harvested from chin, was sculptured and fitted into the extraction socket...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28713702/evidence-based-efficacy-of-autologous-grated-cartilage-in-primary-and-secondary-rhinoplasty
#19
Ali Manafi, Ali Kaviani, Zahra Sadat Hamedi, Afsaneh Rajabiani, Navid Manafi
BACKGROUND: There are numerous methods to mold and shape cartilage grafts for use in rhinoplasty. Each technique has advantages and disadvantages. We are going to introduce a new method for cartilage shaping with long lasting effects confirmed by follow up examination and pathologic evaluation. METHODS: Grated cartilage was used in 483 patients. For 89 cases, it was wrapped in fascia and in 394 patients, used as a filler per se or in contiguity with solid structural grafts...
May 2017: World Journal of Plastic Surgery
https://www.readbyqxmd.com/read/28713268/sitagliptin-an-anti-diabetic-drug-suppresses-estrogen-deficiency-induced-osteoporosisin-vivo-and-inhibits-rankl-induced-osteoclast-formation-and-bone-resorption-in-vitro
#20
Chuandong Wang, Fei Xiao, Xinhua Qu, Zanjing Zhai, Guoli Hu, Xiaodong Chen, Xiaoling Zhang
Postmenopausal osteoporosis is a disease characterized by excessive osteoclastic bone resorption. Some anti-diabetic drugs were demonstrated for anti-osteoclastic bone-loss effects. The present study investigated the skeletal effects of chronic administration of sitagliptin, a dipeptidyl peptidase IV (DPP IV) inhibitor that is increasingly used for type 2 diabetes treatments, in an estrogen deficiency-induced osteoporosis and elucidated the associated mechanisms. This study indicated that sitagliptin effectively prevented ovariectomy-induced bone loss and reduced osteoclast numbers in vivo...
2017: Frontiers in Pharmacology
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