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Tooth loss

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https://www.readbyqxmd.com/read/28211095/tooth-loss-among-the-elders-in-an-inner-city-area-of-ibadan-nigeria
#1
Olushola Ibiyemi, Ejiro Idiga
OBJECTIVE: To determine the prevalence and factors associated with tooth loss among elders in an inner city area of Ibadan, Nigeria. BACKGROUND: Tooth loss is an indication of the oral health of a population, and the possible effects of oral health on general health of the elders has been reported. MATERIAL AND METHODS: A cross-sectional study was undertaken among 392 consenting elders in Idikan, Ibadan, Nigeria. Information on socio-demographic characteristics, causes and effects of tooth loss was obtained using a pretested semistructured questionnaire...
February 16, 2017: Gerodontology
https://www.readbyqxmd.com/read/28210446/differences-between-panoramic-and-cone-beam-ct-in-the-surgical-evaluation-of-lower-third-molars
#2
Ruggero Rodriguez Y Baena, Riccardo Beltrami, Angelo Tagliabo, Silvana Rizzo, Saturnino-Marco Lupi
BACKGROUND: The aim of this study was to evaluate the ability to identify the contiguity between the root of the mandibular third molar and the mandibular canal (MC) in panoramic radiographs compared with Cone Beam-CT. MATERIAL AND METHODS: Panoramic radiographs of 326 third molars and CBCT radiographs of 86 cases indicated for surgery and considered at risk were evaluated. The following signs were assessed in panoramic radiographs as risk factors: radiolucent band, loss of MC border, change in MC direction, MC narrowing, root narrowing, root deviation, bifid apex, superimposition, and contact between the root third molar and the MC...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28202072/a-pilot-randomised-controlled-trial-evaluating-mini-and-conventional-implant-retained-dentures-on-the-function-and-quality-of-life-of-patients-with-an-edentulous-mandible
#3
Sarra Jawad, Craig Barclay, William Whittaker, Martin Tickle, Tanya Walsh
BACKGROUND: Total tooth loss (edentulism) can be a debilitating condition, impacting on ability to chew, speak and interact with others. The most common treatment is with complete removable dentures, which may be successful, but in the lower jaw, bone resorption that worsens over time makes denture-wearing difficult. Two dental implants in the mandible to retain the lower denture has been advocated as the gold standard of treatment, but has not been universally provided due largely to financial constraints and also patient fear...
February 15, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28191679/a-systematic-review-of-the-survival-and-complication-rates-of-resin-bonded-fixed-dental-prostheses-after-a-mean-observation-period-of-at-least-5%C3%A2-years
#4
REVIEW
Daniel S Thoma, Irena Sailer, Alexis Ioannidis, Marcel Zwahlen, Nikolay Makarov, Bjarni E Pjetursson
OBJECTIVES: The objective of this systematic review was to assess the 5-year and 10-year survival of resin-bonded fixed dental prostheses (RBBs) and to describe the incidence of technical and biological complications. MATERIALS AND METHODS: An electronic MEDLINE search complemented by manual searching was conducted to identify prospective and retrospective cohort studies and case series on RBBs with a mean follow-up time of at least 5 years. Patients had to have been examined clinically at the follow-up visit...
February 13, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28185382/autogenous-bone-block-grafting-provides-facial-implant-tissue-stability-long-term
#5
Fernando Verdugo, Agurne Uribarri, Antonio D'Addona
BACKGROUND: Mucosal recession (MR) and bone loss can compromise anterior implant esthetics. PURPOSE: To evaluate tissue stability and clinical outcomes of anterior implants augmented with autogenous block transplants long-term. MATERIALS AND METHODS: This prospective cross-sectional clinical study analyzed facial tissue recession of anterior implants augmented with autogenous bone blocks and compared them to adjacent teeth in forty patients 52 months post-augmentation...
February 10, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28185272/social-inequalities-in-tooth-loss-a-multinational-comparison
#6
Hawazin W Elani, Sam Harper, William Murray Thomson, Iris L Espinoza, Gloria C Mejia, Xiangqun Ju, Lisa M Jamieson, Ichiro Kawachi, Jay S Kaufman
OBJECTIVES: To conduct cross-national comparison of education-based inequalities in tooth loss across Australia, Canada, Chile, New Zealand and the United States. METHODS: We used nationally representative data from Australia's National Survey of Adult Oral Health; Canadian Health Measures Survey; Chile's First National Health Survey Ministry of Health; US National Health and Nutrition Examination Survey; and the New Zealand Oral Health Survey. We examined the prevalence of edentulism, the proportion of individuals having <21 teeth and the mean number of teeth present...
February 10, 2017: Community Dentistry and Oral Epidemiology
https://www.readbyqxmd.com/read/28181377/evolution-of-the-hypercarnivorous-dentition-in-mammals-metatheria-eutheria-and-its-bearing-on-the-development-of-tribosphenic-molars
#7
Floréal Solé, Sandrine Ladevèze
One major innovation of mammals is the tribosphenic molar, characterized by the evolution of a neomorphic upper cusp (=protocone) and a lower basin (=talonid) that occlude and provide shearing and crushing functions. This type of molar is an evolutionarily flexible structure that enabled mammals to achieve complex dental adaptations. Among carnivorous mammals, hypercarnivory is a common trend that evolved several times among therians (marsupials, placentals, and stem relatives). Hypercarnivory involves an important simplification of the carnassial molar pattern from the ancestral tribosphenic molar pattern, with the modification of the triangular tooth crown, and the loss of several cusps and cuspids typical of the tribosphenic molar...
February 9, 2017: Evolution & Development
https://www.readbyqxmd.com/read/28177588/a-retrospective-study-of-isolated-fractures-of-the-alveolar-process-in-the-permanent-dentition
#8
Maja Marotti, Kurt Alois Ebeleseder, Gerold Schwantzer, Stefanie Jauk
BACKGROUND/AIM: There is a lack of studies of fractures of the alveolar process (FAP). Only five were published in the last fifty years. The aim of this study was to analyze the risk of pulp necrosis and infection (PN), pulp canal obliteration (PCO), infection-related root resorption (IRR), ankylosis-related resorption (ARR), marginal bone loss (MBL), and tooth loss (TL) as well as to identify the possible risk factors for teeth involved in an isolated alveolar process fracture. In the second part, any late complications of the involved teeth were reported in patients who responded to a follow-up examination...
February 8, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28174633/long-term-follow-up-of-autogenous-tooth-bone-graft-blocks-with-dental-implants
#9
Young-Kyun Kim, Kang-Mi Pang, Pil-Young Yun, Dae-Ho Leem, In-Woong Um
Demineralized dentin matrix block (ABTB: Autogenous Tooth Bone Graft Block) is 3-D scaffold with same components and geometry with alveolar bone. ABTB is well incorporated and remodelled into cortico-cancellous bone with dental implant. The shape and volume were maintained with little marginal bone loss after average 44 months of follow-up.
February 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28169261/comparative-evaluation-of-tooth-substance-loss-and-its-correlation-with-the-abrasivity-and-chemical-composition-of-different-dentifrices
#10
Ram Prakash Singh, Sidhartha Sharma, Ajay Logani, Naseem Shah, Surendra Singh
CONTEXT: In India, teeth cleaning with tooth powder is common in rural and semi-urban areas. These dentifrices may contain low-quality abrasives, which may have a deleterious effect on dental hard tissues. AIMS: This study aims to evaluate the tooth substance loss caused by different dentifrices and to correlate it with chemical composition, size, and shape of abrasives used. SETTINGS AND DESIGN: An indigenously made automated machine was used for brushing the specimens...
November 2016: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28168759/periodontal-disease-tooth-loss-and-dementia-is-there-a-link-a-systematic-review
#11
REVIEW
Pallavi P Tonsekar, Shuying S Jiang, Gang Yue
BACKGROUND: It has been suggested that dementia is caused by neuronal damage due to chronic inflammation from peripheral sources such as the oral cavity in periodontal disease. OBJECTIVE: The aim of our review was to assess the risk of dementia or cognitive impairment associated with chronic periodontitis and multiple tooth loss. MATERIALS AND METHODS: An extensive search of electronic databases of articles on the relation between periodontitis, tooth loss and dementia published on or before April 2016 was conducted...
February 7, 2017: Gerodontology
https://www.readbyqxmd.com/read/28167518/pleiotropic-regulation-of-virulence-genes-in-streptococcus-mutans-by-a-conserved-small-protein-sprv
#12
Manoharan Shankar, Mohammad S Hossain, Indranil Biswas
: Streptococcus mutans, an oral pathogen associated with dental caries, colonizes tooth surfaces as polymicrobial biofilms, known as dental plaque. S. mutans expresses several virulence factors that allow the organism to tolerate environmental fluctuations and to compete with other microorganisms. We recently identified that a small hypothetical protein (90 amino acids) was essential for normal growth of the bacterium. Inactivation of the gene SMU.2137 encoding this protein caused a significant growth defect and loss of various virulence-associated functions...
February 6, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28167334/in-vitro-enamel-erosion-and-abrasion-inhibiting-effect-of-different-fluoride-varnishes
#13
Adílis Kalina Alexandria, Thiago Isidro Vieira, Matheus Melo Pithon, Tatiana Kelly da Silva Fidalgo, Andréa Fonseca-Gonçalves, Ana Maria Gondim Valença, Lúcio Mendes Cabral, Lucianne Cople Maia
OBJECTIVE: To investigate the erosion and abrasion inhibiting effect of CPP-ACP/NaF and xylitol/NaF varnishes. METHODS: Bovine enamel samples (n=40) were exposed to the following treatments (n=10): NaF varnish (Duraphat(®), positive control); CPP-ACP/NaF varnish (MI varnishTM); xylitol/NaF (Profluorid(®)) or distilled and deionized water (MilliQ(®), negative control). The samples were submitted for 3days to 4 cycles/day of erosion (5min in Sprite Zero) and 2 cycles of abrasion/day after the first and last erosive challenge, with a toothbrush machine and slurries of a placebo toothpaste for 15s (50 strokes/s)...
January 27, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28165391/charcot-marie-tooth-2b-peripheral-sensory-neuropathy-how-rab7-mutations-impact-ngf-signaling
#14
REVIEW
Harry Liu, Chengbiao Wu
Charcot-Marie-Tooth 2B peripheral sensory neuropathy (CMT2B) is a debilitating autosomal dominant hereditary sensory neuropathy. Patients with this disease lose pain sensation and frequently need amputation. Axonal dysfunction and degeneration of peripheral sensory neurons is a major clinical manifestation of CMT2B. However, the cellular and molecular pathogenic mechanisms remain undefined. CMT2B is caused by missense point mutations (L129F, K157N, N161T/I, V162M) in Rab7 GTPase. Strong evidence suggests that the Rab7 mutation(s) enhances the cellular levels of activated Rab7 proteins, thus resulting in increased lysosomal activity and autophagy...
February 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28161365/a-randomised-clinical-trial-to-determine-the-abrasive-effect-of-the-tongue-on-human-enamel-loss-with-and-without-a-prior-erosive-challenge
#15
J Seong, N Claydon, E Macdonald, S Garner, R G Newcombe, N West
OBJECTIVES: To investigate the abrasive effect of the tongue on human enamel loss with and without a prior dietary acid challenge in an in situ model. METHODS: A single centre, single blind, randomly allocated, split mouth, four treatment regimen, in situ study in healthy adult volunteers was undertaken. Twenty four subjects wore two lower intra-oral appliances each fitted with 4 human enamel samples 6h/day for 15 days. The samples were treated with either 50ml orange juice or water for 5min ex vivo 4x/day; prior to being licked or not licked with the subject's tongue for 60s...
February 1, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28158261/association-between-tooth-loss-and-cognitive-decline-a-13-year-longitudinal-study-of-chinese-older-adults
#16
Juan Li, Hanzhang Xu, Wei Pan, Bei Wu
OBJECTIVES: To examine the association between the number of teeth remaining and cognitive decline among Chinese older adults over a 13-year period. DESIGN: A large national longitudinal survey of Chinese older adults. SETTING: The Chinese Longitudinal Healthy Longevity Survey (CLHLS) (1998-2011). PARTICIPANTS: A total of 8,153 eligible participants aged 60+ interviewed in up to six waves. MEASUREMENTS: Cognitive function and teeth number were measured at each interview...
2017: PloS One
https://www.readbyqxmd.com/read/28151902/clinical-pathological-and-genetic-evaluations-of-chinese-patient-with-otodental-syndrome-and-multiple-complex-odontoma-case-report
#17
Anqi Liu, Meiling Wu, Xiaohe Guo, Hao Guo, Zhifei Zhou, Kewen Wei, Kun Xuan
Otodental syndrome is a rare autosomal-dominant disease characterized by globodontia, associated with sensorineural, high-frequency hearing loss. Here, we describe the clinical, pathological, and genetic evaluations of a 9-year-old girl with otodental syndrome and multiple complex odontoma.The patient presented with a draining sinus tract in her left cheek, globodontia, and hearing loss. The odontomas which caused the cutaneous sinus tracts were extracted because of the odontogenic infection. The extracted odontoma and primary tooth was studied by micro-CT and further observed histopathologically...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28149683/evolution-of-gremlin-2-in-cetartiodactyl-mammals-gene-loss-coincides-with-lack-of-upper-jaw-incisors-in-ruminants
#18
Juan C Opazo, Kattina Zavala, Paola Krall, Rodrigo A Arias
Understanding the processes that give rise to genomic variability in extant species is an active area of research within evolutionary biology. With the availability of whole genome sequences, it is possible to quantify different forms of variability such as variation in gene copy number, which has been described as an important source of genetic variability and in consequence of phenotypic variability. Most of the research on this topic has been focused on understanding the biological significance of gene duplication, and less attention has been given to the evolutionary role of gene loss...
2017: PeerJ
https://www.readbyqxmd.com/read/28149472/effect-of-tooth-bleaching-on-the-carbonate-concentration-in-dental-enamel-by-raman-spectroscopy
#19
Tatiana Vargas-Koudriavtsev, Óscar-Andrey Herrera-Sancho
BACKGROUND: There are not many studies evaluating the effects of surface treatments at the molecular level. The aim of this in vitro study was to analyze the concentration of carbonate molecules in dental enamel by Raman spectroscopy after the application of in-office and home whitening agents. MATERIAL AND METHODS: Sixty human teeth were randomly divided into six groups and exposed to three different home bleaching gels (Day White) and three in-office whitening agents (Zoom! Whitespeed and PolaOffice) according to the manufacturer´s instructions...
January 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28149456/preventive-effects-of-different-protective-agents-on-dentin-erosion-an-in-vitro-investigation
#20
Claudio Poggio, Chiara Gulino, Maria Mirando, Marco Colombo, Giampiero Pietrocola
BACKGROUND: The purpose of this in vitro study was to evaluate the preventive effects of different protective agents on dentine erosion, measuring mean percentage weight loss. Dissolution of dentine under erosive challenges caused by soft drinks was analyzed: specimens were weighed following each immersion period, with mean percent weight losses calculated. MATERIAL AND METHODS: Extracted teeth were sectioned into uniform slabs. Seventy permanent enamel specimens were randomly distributed to seven groups...
January 2017: Journal of Clinical and Experimental Dentistry
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