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https://www.readbyqxmd.com/read/28634415/force-induced-increased-osteogenesis-enables-accelerated-orthodontic-tooth-movement-in-ovariectomized-rats
#1
Qinggang Dai, Siru Zhou, Peng Zhang, Xuhui Ma, Nayong Ha, Xiao Yang, Zhifeng Yu, Bing Fang, Lingyong Jiang
As the number of elderly orthodontic patients increases, the impact of postmenopausal osteoporosis on orthodontic tooth movement (OTM) has attracted a great deal of attention because OTM relies on alveolar bone remodeling. The question of whether OTM causes subsequent alveolar bone loss and is harmful to alveolar bone health under osteoporotic conditions remains to be answered. The present study aimed to clarify the influences of OTM on alveolar bone in osteoporotic rats. OTM was accelerated in ovariectomized (OVX) rats as a result of increased bone resorption in the pressure area...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28633943/diet-borne-systemic-inflammation-is-associated-with-prevalent-tooth%C3%A2-loss
#2
Georgios A Kotsakis, Vanessa Chrepa, Nitin Shivappa, Michael Wirth, James Hébert, Ai Koyanagi, Stefanos Tyrovolas
BACKGROUND & AIMS: The deleterious effect of cariogenic dietary patterns on tooth loss is well characterized, but the contribution of diet-borne systemic inflammation to loss of teeth remains uncharted. Recent efforts have unveiled a protective role of single nutrients to periodontal health. However, the assessment of overall diet as a modifiable risk factor for oral health remains elusive. Thus, the aim of this study was to assess the association between diet-borne systemic inflammation and tooth loss in a representative sample of the US adult non-institutionalized population...
June 9, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28631261/distinct-post-translational-features-of-type-i-collagen-are-conserved-in-mouse-and-human-periodontal-ligament
#3
D M Hudson, M Garibov, D R Dixon, T Popowics, D R Eyre
BACKGROUND AND OBJECTIVE: Specifics of the biochemical pathways that modulate collagen cross-links in the periodontal ligament (PDL) are not fully defined. Better knowledge of the collagen post-translational modifications that give PDL its distinct tissue properties is needed to understand the pathogenic mechanisms of human PDL destruction in periodontal disease. In this study, the post-translational phenotypes of human and mouse PDL type I collagen were surveyed using mass spectrometry...
June 20, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28630957/optical-profilometry-versus-intraoral-handheld-scanning
#4
Oliver Hartkamp, Florian Peters, Hannes Bothung, Ulrich Lohbauer, Sven Reich
AIM: The aim of this study was to evaluate the difference in maximum height loss values obtained from datasets based on optical profilometry and intraoral scanning. Additionally, two analysis applications were tested with respect to their correspondence. MATERIALS AND METHODS: To obtain baseline data, the occlusal surface of a metal phantom tooth was scanned by optical profilometry [WLP] and an intraoral scanner [IOS]. Then, wear was simulated at two locations of the tooth, three times each ([wear1], [wear2], and [wear3]), and the surface was captured after each status of wear, applying [WLP] and [IOS]...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28627745/16-year-follow-up-of-an-avulsed-maxillary-central-incisor-after-replantation-following-10-h-storage-an-unusual-case
#5
Zuhal Kırzıoğlu, Özge Erken Güngör, Yıldırım Erdoğan
Tooth avulsion is a type of dental injury defined as the complete displacement of a tooth out of the alveolar socket, and the lack of prompt treatment measures can result in the loss of function, poor quality of life, and psychological and social problems. However, several factors may not permit the immediate replantation of an avulsed tooth; therefore, delayed replantation has emerged as an alternative to meet the esthetic, functional, and psychological demands of patients. Here it was described that the successful replantation of an avulsed maxillary central incisor in a 9-year-old boy who presented at the clinic with the tooth stored in unfavorable conditions as dry and then in olive oil-milk mixture almost 10 h after the event...
June 19, 2017: Special Care in Dentistry
https://www.readbyqxmd.com/read/28627032/tooth-autotransplantation-as-a-pillar-for-3d-regeneration-of-the-alveolar-process-after-severe-traumatic-injury-a-case-report
#6
Eduardo Anitua, Maialen Urkia-Mendinueva, Sandra Galan-Bringas, Alia Murias-Freijo, Mohammad Hamdan Alkhraisat
In dental traumatology, the loss of teeth and the supporting alveolar bone in children compromises the proper development of maxillofacial structures and also limits the solutions that can be offered. In this case report, multidisciplinary management is described of a child with a significant loss of alveolar bone and associated teeth due to a traffic accident at 8 years of age. The management involved staged teeth autotransplatation into surgically prepared sites with bone expanders, orthodontic treatment and dental implants...
June 18, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28626888/clinical-and-radiographic-evaluation-of-early-loaded-narrow-diameter-implants-5-year-follow-up-of-a-multicenter-prospective-clinical-study
#7
Pablo Galindo-Moreno, Peter Nilsson, Paul King, Nils Worsaae, Alexander Schramm, Miguel Padial-Molina, Carlo Maiorana
OBJECTIVE: This study was initiated to evaluate the 5-year implant survival rate and marginal bone levels around a 3.0-mm implant when replacing a single tooth in the anterior region. MATERIALS AND METHODS: The study was designed as a prospective, single-arm, multicenter clinical study. Patients missing 12, 22, 32, 31, 41 or 42 teeth were included, and implants of 3.0 mm diameter and different lengths were placed by a one-stage surgery protocol. Definitive cemented crowns were placed 6-10 weeks later...
June 18, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28625342/dental-investigation-of-mummies-from-the-capuchin-catacombs-of-palermo-circa-18th-19th-century-ce
#8
R Seiler, D Piombino-Mascali, F Rühli
Within the framework of the Sicily Mummy Project, the orofacial complex of a significant sample of individuals (n=111) from the Capuchin Catacombs of Palermo, Italy, was inspected. The heads and dentitions of the mummies were documented and the recorded findings described: the state of preservation of skeletal and soft tissues; dental pathologies such as carious lesions and alveolar bone loss; enamel hypoplasia; and ante- and post-mortem tooth loss. Despite limitations in data collection, the oral health of these mummies was assessed and the frequencies of pathologies were compared to those of similar populations...
May 31, 2017: Homo: Internationale Zeitschrift Für die Vergleichende Forschung Am Menschen
https://www.readbyqxmd.com/read/28621563/reduced-mastication-impairs-memory-function
#9
Y Fukushima-Nakayama, Takehito Ono, M Hayashi, M Inoue, H Wake, Takashi Ono, T Nakashima
Mastication is an indispensable oral function related to physical, mental, and social health throughout life. The elderly tend to have a masticatory dysfunction due to tooth loss and fragility in the masticatory muscles with aging, potentially resulting in impaired cognitive function. Masticatory stimulation has influence on the development of the central nervous system (CNS) as well as the growth of maxillofacial tissue in children. Although the relationship between mastication and cognitive function is potentially important in the growth period, the cellular and molecular mechanisms have not been sufficiently elucidated...
May 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28619155/black-pigmented-anaerobic-bacteria-associated-with-ovine-periodontitis
#10
Ana C Borsanelli, Elerson Gaetti-Jardim, Christiane M Schweitzer, Lorenzo Viora, Valentina Busin, Marcello P Riggio, Iveraldo S Dutra
Periodontitis is a polymicrobial infectious disease that causes occlusion change, tooth loss, difficulty in rumination, and premature culling of animals. This study aimed to detect species of the genera Porphyromonas and Prevotella present in the periodontal pocket of sheep with lesions deeper than 5mm (n=14) and in the gingival sulcus of animals considered periodontally healthy (n=20). The presence of microorganisms was evaluated by polymerase chain reaction (PCR) using specific primers for Porphyromonas asaccharolytica, Porphyromonas endodontalis, Porphyromonas gingivalis, Porphyromonas gulae, Prevotella buccae, Prevotella intermedia, Prevotella loescheii, Prevotella melaninogenica, Prevotella nigrescens, Prevotella oralis, and Prevotella tannerae...
May 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28618434/alveolar-ridge-augmentation-using-dystopic-autogenous-tooth-2-year-results-of-an-open-prospective-study
#11
Veronika Pohl, Sebastian Pohl, Irene Sulzbacher, Rudolf Fuerhauser, Georg Mailath-Pokorny, Robert Haas
PURPOSE: To evaluate the use of chemically unchanged tooth material in lateral alveolar ridge augmentation or for the filling of jaw defects. MATERIALS AND METHODS: A total of 20 patients underwent either lateral augmentation of the alveolar process (11 patients) or filling of jaw defects (6 patients) with autogenous unaltered tooth material in a longitudinal 2-year study. In three patients, the jaw defect was so marked that a bone block graft had to be used for augmentation in addition to particulate dental material...
June 14, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28618120/supportive-periodontal-treatment-pocket-depth-changes-and-tooth-loss
#12
L M De Wet, D E Slot, G A Van der Weijden
AIM: The purpose of this retrospective study was to determine the results of 10 years of supportive periodontal treatment(SPT) following active periodontal therapy(APT). Probing pocket depth(PPD), bleeding on probing(BOP), tooth loss(TL)and the effects of two patient-related factors, smoking and gender were evaluated. METHODS: This retrospective study examined patients who underwent APT and SPT for adult periodontitis. Analyses were conducted using site-, tooth- and patient-level information...
June 15, 2017: International Journal of Dental Hygiene
https://www.readbyqxmd.com/read/28617998/schwann-cell-specific-deletion-of-the-endosomal-pi-3-kinase-vps34-leads-to-delayed-radial-sorting-of-axons-arrested-myelination-and-abnormal-erbb2-erbb3-tyrosine-kinase-signaling
#13
Anne M Logan, Anna E Mammel, Danielle C Robinson, Andrea L Chin, Alec F Condon, Fred L Robinson
The PI 3-kinase Vps34 (Pik3c3) synthesizes phosphatidylinositol 3-phosphate (PI3P), a lipid critical for both endosomal membrane traffic and macroautophagy. Human genetics have implicated PI3P dysregulation, and endosomal trafficking in general, as a recurring cause of demyelinating Charcot-Marie-Tooth (CMT) peripheral neuropathy. Here, we investigated the role of Vps34, and PI3P, in mouse Schwann cells by selectively deleting Vps34 in this cell type. Vps34-Schwann cell knockout (Vps34(SCKO) ) mice show severe hypomyelination in peripheral nerves...
June 15, 2017: Glia
https://www.readbyqxmd.com/read/28615507/genetic-evaluations-of-chinese-patients-with-odontohypophosphatasia-resulting-from-heterozygosity-for-mutations-in-the-tissue-non-specific-alkaline-phosphatase-gene
#14
Jia Wan, Li Zhang, Tang Liu, Yewei Wang
BACKGROUND: Hypophosphatasia is a rare heritable metabolic disorder characterized by defective bone and tooth mineralization accompanied by a deficiency of tissue-non-specific (liver/bone/kidney) isoenzyme of alkaline phosphatase activity, caused by a number of loss-of-function mutations in the alkaline phosphatase liver type gene. We seek to explore the clinical manifestations and identify the mutations associated with the disease in a Chinese odonto- hypophosphatasia family. RESULTS: The proband and his younger brother affected with premature loss of primary teeth at their 2-year-old...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28613064/-status-and-analysis-of-oral-disease-burden-comparison-of-the-domestic-and-overseas-data
#15
Y Meng, X N Liu, S G Zheng
At present, it has been regarded that oral disease was one of the most prevalent problems for people's general health around the world. Oral disease burden study focuses on the pressure and effect of oral diseases to the whole social economy and people's health. Oral disease burden, as a public health problem, needs to be attached importance in China and foreign countries. By means of retrieving the literature, this review article summarizes the progress of domestic and oversea studies on oral disease burden, analyses the epidemiological burden through the indicators such as the prevalence rate, decayed missing and filled teeth, disability adjusted life years, disability weights, and illustrates the economic burden of oral diseases by using part of the data...
June 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28605600/activin-and-bmp4-signaling-converge-on-wnt-activation-during-odontogenesis
#16
H-J E Kwon, S Jia, Y Lan, H Liu, R Jiang
Previous studies show that both activin and Bmp4 act as crucial mesenchymal odontogenic signals during early tooth development. Remarkably, mice lacking activin-βA ( Inhba(-/-)) and mice with neural crest-specific inactivation of Bmp4 ( Bmp4(ncko/ncko)) both exhibit bud-stage developmental arrest of the mandibular molar tooth germs while their maxillary molar tooth germs completed morphogenesis. In this study, we found that, whereas expression of Inhba and Bmp4 in the developing tooth mesenchyme is independent of each other, Bmp4(ncko/ncko)Inhba(-/-) compound mutant mice exhibit early developmental arrest of all tooth germs...
June 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28603707/maxillary-resection-for-cancer-zygomatic-implants-insertion-and-palatal-repair-as-single-stage-procedure-report-of-three-cases
#17
Pietro Salvatori, Antonio Mincione, Lucio Rizzi, Fabrizio Costantini, Alessandro Bianchi, Emma Grecchi, Umberto Garagiola, Francesco Grecchi
BACKGROUND: Oronasal/antral communication, loss of teeth and/or tooth-supporting bone, and facial contour deformity may occur as a consequence of maxillectomy for cancer. As a result, speaking, chewing, swallowing, and appearance are variably affected. The restoration is focused on rebuilding the oronasal wall, using either flaps (local or free) for primary closure, either prosthetic obturator. Postoperative radiotherapy surely postpones every dental procedure aimed to set fixed devices, often makes it difficult and risky, even unfeasible...
December 2017: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28599883/uterine-sparing-laparoscopic-resection-of-accessory-cavitated-uterine-masses
#18
Ann Peters, Noah B Rindos, Richard S Guido, Nicole M Donnellan
To demonstrate surgical techniques utilized during uterine-sparing laparoscopic resections of accessory cavitated uterine masses (ACUM) BACKGROUND: ACUM represent a rare uterine entity observed in premenopausal women suffering from dysmenorrhea and recurrent pelvic pain. The diagnosis is made when an isolated extra-cavitated uterine mass is resected from an otherwise normal appearing uterus with unremarkable endometrial lumen and adnexal structures. Pathologic confirmation requires an accessory cavity lined with endometrial epithelium (and corresponding glands and stroma) filled with chocolate-brown fluid...
June 6, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28597838/-collaboration-between-periodontics-and-orthodontics-interest-of-alveolar-corticotomies-and-piezocision-review-of-literature
#19
Brenda Mertens, Charles Angioni, Valérie Orti, Pierre Canal
INTRODUCTION: Orthodontics in adults must adapt to certain particularities especially related to the decrease or absence of growth and the prevalence of periodontal damage in this population. This review of the literature aims to assess the effects of alveolar corticotomies on accelerating or facilitating tooth movements in different types of orthodontic movements, to compare results obtained by classical technique with those obtained by piezocision and analyze their impact on periodontal tissues in the long term...
June 2017: L' Orthodontie Française
https://www.readbyqxmd.com/read/28596736/claudin-loss-of-function-disrupts-tight-junctions-and-impairs-amelogenesis
#20
Claire Bardet, Sandy Ribes, Yong Wu, Mamadou Tidiane Diallo, Benjamin Salmon, Tilman Breiderhoff, Pascal Houillier, Dominik Müller, Catherine Chaussain
Claudins are a family of proteins that forms paracellular barriers and pores determining tight junctions (TJ) permeability. Claudin-16 and -19 are pore forming TJ proteins allowing calcium and magnesium reabsorption in the thick ascending limb of Henle's loop (TAL). Loss-of-function mutations in the encoding genes, initially identified to cause Familial Hypomagnesemia with Hypercalciuria and Nephrocalcinosis (FHHNC), were recently shown to be also involved in Amelogenesis Imperfecta (AI). In addition, both claudins were expressed in the murine tooth germ and Claudin-16 knockout (KO) mice displayed abnormal enamel formation...
2017: Frontiers in Physiology
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