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Tooth loss

Hans R Preus, Per Gjermo, Vibeke Baelum
BACKGROUND: Tooth loss is the ultimate negative consequence of periodontitis, and reports of the extent to which different treatment strategies may influence the loss of teeth in the long run are hard to find. AIM: To test the hypothesis that there is no difference in the 5-year clinical outcome of therapy in terms of tooth mortality between groups of patients treated with conventional over-weeks scaling and root planing (SRP) or same-day full-mouth disinfection (FDIS), with or without adjunctive metronidazole...
October 21, 2016: Journal of Periodontology
Susan J Carson, Jacqueline Burns
DesignCohort studyCohort selectionParticipants were recruited between 1994 and 1998 from the general population with the preferred ages of 35 to 65 years in women and 40 to 65 years in men.Exposure measurementSmoking was assessed using a questionnaire from which pack years of smoking were calculated. Educational attainment, body mass index, hypertension, diabetes, alcohol consumption and vitamin or mineral supplements were assessed from measurements and questionnaires. Tooth loss was also assessed by questionnaire returned between 2004 and 2006...
September 2016: Evidence-based Dentistry
Fernanda D Santa-Maria, Luiza Monteavaro Mariath, Cláudia S Poziomczyk, Marcia A P Maahs, Rafael F M Rosa, Paulo R G Zen, Lavínia Schüller-Faccini, Ana Elisa Kiszewski
OBJECTIVES: Current knowledge on dental anomalies in patients with incontinentia pigmenti (IP) has been obtained by examining case reports; however, an overall characterization of such alterations remains lacking. The objective of this study was to determine the frequency, type and location of dental alterations in IP using a case series. METHODS: Fourteen patients (9 children and 5 adults) with a clinical diagnosis of IP who presented dental anomalies were included in this study...
October 20, 2016: Clinical Oral Investigations
Kuang-Wei Hsu, Yu-Fu Shen, Pein-Chi Wei
STATEMENT OF PROBLEM: In addition to the original abutments provided by implant companies, compatible computer-aided design and computer-aided manufacturing (CAD-CAM) abutments are also available from different manufacturers. However, the combination of abutments and implant systems from different manufacturers may lead to mechanical problems between components. Little has been reported on the clinical performance of this treatment option. PURPOSE: The purpose of this retrospective case series was to evaluate the outcome of compatible CAD-CAM titanium abutments (TiAs) for posterior single-implant tooth replacement (PSITR) up to 6 years after insertion...
October 17, 2016: Journal of Prosthetic Dentistry
Nisarat Ruangsawasdi, Matthias Zehnder, Raphael Patcas, Chafik Ghayor, Barbara Siegenthaler, Bebeka Gjoksi, Franz E Weber
Conventional root canal treatment in immature permanent teeth can lead to early tooth loss in children because root formation is discontinued. We investigated whether the stem cell factor (SCF) could facilitate cell homing in the pulpless immature root canal and promote regeneration of a functional pulp. In vitro, human mesenchymal stem cells (hMSCs) were exposed to SCF at various concentrations for assessing cell migration, proliferation, and differentiation towards odonto/osteoblasts by 3D-chemotaxis slides, WST-1 assay, and alkaline phosphatase activity, respectively...
October 20, 2016: Tissue Engineering. Part A
Marlen Vitales-Noyola, Rita Martínez-Martínez, Juan P Loyola-Rodríguez, Lourdes Baranda, Perla Niño-Moreno, Roberto González-Amaro
BACKGROUND: Periodontal disease is chronic inflammatory process that affects the attachment structures of the teeth and constitutes a significant cause of tooth loss in adults. Although different bacteria play an important role in the triggering of this condition, the progression and severity of the disease are strongly affected by the host immune response, which is under the control of different immune-regulatory mechanisms, including T regulatory (Treg) cells. The aim of this study was to assess the frequency and function of CD69(+) Treg lymphocytes in patients with chronic periodontal disease...
October 19, 2016: Journal of Oral Pathology & Medicine
Massimo Del Fabbro, Stefano Corbella, Patrick Sequeira-Byron, Igor Tsesis, Eyal Rosen, Alessandra Lolato, Silvio Taschieri
BACKGROUND: When primary root canal therapy fails, periapical lesions can be retreated with or without surgery. Root canal retreatment is a non-surgical procedure that involves removal of root canal filling materials from the tooth, followed by cleaning, shaping and obturating of the canals. Root-end resection is a surgical procedure that involves exposure of the periapical lesion through an osteotomy, surgical removal of the lesion, removal of part of the root-end tip, disinfection and, commonly, retrograde sealing or filling of the apical portion of the remaining root canal...
October 19, 2016: Cochrane Database of Systematic Reviews
Masakazu Asahara, Masahiro Koizumi, Thomas E Macrini, Suzanne J Hand, Michael Archer
The modern platypus, Ornithorhynchus anatinus, has an eye structure similar to aquatic mammals; however, platypuses also have a "sixth sense" associated with the bill electro- and mechanoreception that they use without opening their eyes underwater. We hypothesize that Ornithorhynchus and the Miocene taxon Obdurodon have different sensory capacities, which may have resulted from differences in foraging behavior. To estimate differences in foraging, sensory systems, and anatomical divergence between these monotremes, we compared their skull morphologies...
October 2016: Science Advances
Saturnino Marco Lupi, Matteo Cislaghi, Silvana Rizzo, Ruggero Rodriguez Y Baena
BACKGROUND: The onset of perioral wrinkles often prompts patients to request treatment. This aesthetic deterioration linked to aging may be associated with tooth and alveolar bone loss in fully edentulous patients. PURPOSE: To evaluate perioral wrinkles before and after maxillary and mandibular rehabilitation with implant-retained dentures in fully edentulous patients. METHODS: In this prospective cohort, single-center, blinded study, patients requiring maxillary and mandibular rehabilitation with implant-retained dentures were enrolled...
2016: Clinical, Cosmetic and Investigational Dentistry
E Darvishi, Z Aziziaram, K Yari, M Bagheri Dehbaghi, D Kahrizi, H Karim, S Vaziri, J Zargooshi, K Ghadiri, S Muhammadi, E Kazemi, M T Moradi, M Shokrinia, N Mohammadi
Periodontal disease is one of the most prevalent inflammatory illnesses and is a main cause of tooth loss in human population. Tumor necrosis factor-α (TNF-α) gene is one of pro-inflammatory cytokines which has important role in pathogenesis of periodontal disease. The main purpose of this study is to determine genotype abundance of TNF-α-1031 gene in both groups of patients and controls, and also investigation of relation of single nucleotide polymorphism (SNP) these genotypes with periodontal disease risk...
September 30, 2016: Cellular and Molecular Biology
Jason Fleming, Dianna Quan
We present a patient with congenital spinal muscular atrophy associated with pain, subjective sensory loss, right talipes equinovarus, delayed walking, and progressive gait impairment. A sister and niece reportedly had Charcot-Marie-Tooth 1A, but the patient's electromyogram showed an axonal motor neuropathy or neuronopathy. We identified a c.806G>A TRPV4 gene mutation causing an Arg269His amino acid substitution. TRPV4 mutations cause variable phenotypes including axonal sensorimotor neuropathy and motor neuropathy or neuronopathy...
September 16, 2016: Neuromuscular Disorders: NMD
Veerasamy Yengopal, Soraya Yasin Harnekar, Naren Patel, Nandi Siegfried
BACKGROUND: Childhood caries (tooth decay) consists of a form of tooth decay that affects the milk teeth (also known as baby or primary teeth) of children. This may range from tooth decay in a single tooth to rampant caries affecting all the teeth in the mouth. Primary teeth in young children are vital to their development and every effort should be made to retain these teeth for as long as is possible. Dental fillings or restorations have been used as an intervention to repair these damaged teeth...
October 17, 2016: Cochrane Database of Systematic Reviews
Brajendra S Tomar, G S Chandu, Shubhra Singh, Manish Goutam
The positive psychological effects of improving patients' smile often contribute to an improved self-image and enhanced self-esteem. Periodontal disease may lead to tooth and tissue loss that can result in esthetic problems. Combined periodontal/prosthodontic treatment for patients with advanced disease is well documented. This case report illustrates a method of treatment for an advanced tissue loss in an esthetic area using a removable silicone gingival prosthesis/mask.
October 2016: Journal of Indian Prosthodontic Society
Ibrahim El Deeb Zakhary, Karl Wenger, Mohammed Elsalanty, James Cray, Mohamed Sharawy, Regina Messer
OBJECTIVE: The mandible is continuously undergoing remodeling as a result of mechanobiologic factors, such as chewing forces, tooth loss, orthodontic forces, and periodontitis. The effects of mechanical stress and biologic signals in bone homeostasis have been the focus of many investigations. However, much of this research utilized osteocytes derived from long bones, but little is known about the mandible-derived osteocytes. This study tests a protocol to isolate and grow osteocytes from rat mandible...
September 9, 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Hee-Yong Yi, Young-Seok Park, Benjamin E Pippenger, Bongho Lee, Richard J Miron, Michel Dard
PURPOSE: The placement of immediate implants has become a routine treatment modality for the replacement of missing teeth. The aim of the present study was to evaluate dimensional changes of hard tissues following tooth extraction, implant bed preparation, and the subsequent integration of titanium implants placed immediately or following an 8-week healing period. MATERIALS AND METHODS: All mandibular premolars were extracted and used as experimental sites in five beagle dogs...
October 14, 2016: International Journal of Oral & Maxillofacial Implants
Renato Quirino Ramos, João Luiz Bastos, Marco Aurélio Peres
Population-based studies assessing self-reported periodontal questions in low-income countries are lacking, and therefore we aimed to assess the accuracy of self-reported periodontal items in Brazil. One thousand one hundred and forty adults from Florianópolis, Brazil, had their periodontium clinically examined, and responded to the following self-reported items on periodontal conditions: Question (Q)1, Do you have any wobbly teeth?; Q2, Do your gums usually bleed?; and Q3, Has your dentist ever told you that you have gum disease? Periodontitis was defined as: a...
October 10, 2016: Brazilian Oral Research
Pierpaolo Cortellini, Jacopo Buti, Giovanpaolo Pini Prato, Maurizio S Tonetti
AIM: compare the long-term outcomes and costs of 3 treatment modalities in intrabony defects. MATERIALS AND METHODS: 45 intrabony defects in 45 patients had been randomly allocated to receive: modified papilla preservation technique with titanium reinforced e-polytetrafluoroethylene (ePTFE) membranes (MPPT Tit, N=15); access flap with e-PTFE membranes (Flap-ePTFE, N=15); access flap alone (Flap, N=15). Supportive periodontal care (SPC) was provided monthly for 1 year, then every 3 months for 20 years...
October 13, 2016: Journal of Clinical Periodontology
Abhishek Singh, Abhishek Nagpal, Salil Pawah, Chetan Pathak, Gaurav Issar, Pankaj Sharma
INTRODUCTION: In an attempt to minimize wear damage to the enamel of antagonist teeth, new low and medium fusing ceramic materials have been developed. Manufacturers usually claim that these ceramics are wear-friendly because of their lower hardness, lower concentrations of crystal phase, and smaller crystal sizes. This study aimed to quantitatively analyze the wear strength of various commercially available dental porcelain with tooth enamel as well as the surface hardness of these dental porcelain...
September 1, 2016: Journal of Contemporary Dental Practice
Jian Jiao, Dong Shi, Zhan-Qiang Cao, Huan-Xin Meng, Rui-Fang Lu, Li Zhang, Yi Song, Jing-Ren Zhao
AIM: To evaluate the effectiveness of non-surgical periodontal treatment (NSPT) and its influential factors in a large Chinese population with chronic periodontitis. METHODS: Periodontal examination data of 10,789 patients with at least one periodontal re-evaluation record were extracted from a hospital-based electronic periodontal charting record system. Probing depth (PD) and bleeding index (BI) reductions after NSPT and their influential factors were analyzed by multilevel analysis...
October 11, 2016: Journal of Clinical Periodontology
Dong-Hun Han, Young-Ho Khang
AIM: The aim of this study was to assess the association between lifecourse socioeconomic position (SEP) indicators and tooth loss in a large representative sample of the Korean adult population. METHODS: Data from the Fourth and Fifth Korea National Health and Nutritional Examination Survey on 17,549 Korean adults aged 50 years or older were analyzed. The study design was cross-sectional. Tooth loss was defined as either edentulism (0 teeth) or severe tooth loss (<20 teeth)...
October 10, 2016: Community Dentistry and Oral Epidemiology
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