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https://www.readbyqxmd.com/read/28821055/improvement-of-silicate-cement-properties-with-bacterial-cellulose-powder-addition-for-applications-in-dentistry
#1
Georgeta Voicu, Sorin-Ion Jinga, Bogdan-Gabriel Drosu, Cristina Busuioc
The goal of this paper was to synthesize a new family of composites starting from mineral binder powders and biocellulose membranes, with applications in endodontics. An important achievement consisted in the crushing of biocellulose 3D structure in a polygranular powder via an hydrothermal treatment. Afterwards, the polymer powder was mixed with silicate cement powders synthesized through the sol-gel technique. The resulting hybrid materials were investigated by thermal analysis, X-ray diffraction, scanning electron microscopy and mechanical measurements...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28820730/knowledge-of-hepatitis-b-virus-infection-and-its-control-practices-among-dental-students-in-an-indian-city
#2
Vishal Khandelwal, Sushma Khandelwal, Neetu Gupta, Ullal Anand Nayak, Namrata Kulshreshtha, Sudhindra Baliga
Background Hepatitis B virus infection is a general cause of chronic hepatitis, liver cirrhosis and hepato-cellular carcinoma worldwide. It is highly contagious. It is an important reason for morbidity and mortality in the Indian population. Oral health professionals are at the highest risk. Vaccination for hepatitis B can prevent this deadly disease. Methods The present study was designed to evaluate the degree of awareness, knowledge of hepatitis B infection and status of hepatitis B vaccination among dental students...
August 18, 2017: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/28819982/hiv-testing-in-the-dental-setting-perspectives-and-practices-of-experienced-dental-professionals
#3
Carrigan L Parish, Karolynn Siegel, Terri Liguori, Stephen N Abel, Harold A Pollack, Margaret R Pereyra, Lisa R Metsch
The dental setting is a largely untapped venue to identify patients with undiagnosed HIV infection. Yet, uptake of rapid HIV testing within the dental community remains low. This study sought to better understand the experiences of dental professionals who have administered the test and how these experiences might inform efforts to promote greater uptake of rapid HIV testing in dental settings. Qualitative interviews were conducted with United States dentists (N = 37) and hygienists (N = 5) who offered rapid HIV testing in their practices...
August 18, 2017: AIDS Care
https://www.readbyqxmd.com/read/28819517/dental-dermatological-and-radiographic-findings-in-a-case-of-gorlin-goltz-syndrome-report-and-review
#4
Kumar Nilesh, Shivsagar Tewary, Sameer Zope, Jinesh Patel, Aaditee Vande
Gorlin-Goltz syndrome (GGS) is a rare autosomal dominant disorder. The disease shows multiple organ involvement with variable clinical presentation. Thus a multidisciplinary approach is required for its prompt clinical diagnosis and management of this condition. This paper highlights a case of GGS presenting in a young male patient with cranial, facial, dermatological, dental and skeletal involvement. The diagnosis of the syndrome was based on its clinical presentation, radiological features and histopathological findings...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28819219/the-fabrication-of-an-ica-sf-plcl-nanofibrous-membrane-by-coaxial-electrospinning-and-its-effect-on-bone-regeneration-in-vitro-and-in-vivo
#5
Lihua Yin, Kaijuan Wang, Xiaoqin Lv, Rui Sun, Shaohua Yang, Yujie Yang, Yanyun Liu, Jiatao Liu, Jing Zhou, Zhanhai Yu
GBR is currently accepted as one of the most effective approaches for bone defect regeneration relating to dental implant. Icariin is the main active ingredient in the extraction of total flavonoids from the Chinese traditional herb Epimediumbrevicornum Maxim. In this study, ICA was successfully incorporated into the nanofibers barrier membrane (ICA-SF/PLCL) as osteoinduction factor by coaxial electrospinning and was released in a sustained and controlled manner. The entire release period included two stages: an initial burst stage (47...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818647/malocclusion-class-ii-division-1-skeletal-and-dental-relationships-measured-by-cone-beam-computed-tomography
#6
Yiling Xu, Heesoo Oh, Manuel O Lagravère
OBJECTIVES: The purpose of this study was to locate traditionally-used landmarks in two-dimensional (2D) images and newly-suggested ones in three-dimensional (3D) images (cone-beam computer tomographies [CBCTs]) and determine possible relationships between them to categorize patients with Class II-1 malocclusion. METHODS: CBCTs from 30 patients diagnosed with Class II-1 malocclusion were obtained from the University of Alberta Graduate Orthodontic Program database...
August 14, 2017: International Orthodontics
https://www.readbyqxmd.com/read/28818059/influence-of-sense-of-coherence-on-adolescents-self-perceived-dental-aesthetics-a-cross-sectional-study
#7
Aline Cavalcanti da Costa, Fabrícia Soares Rodrigues, Priscila Prosini da Fonte, Aronita Rosenblatt, Nicola Patricia Thérèse Innes, Mônica Vilela Heimer
BACKGROUND: Sense of coherence (SOC) is a psychosocial factor capable of influencing perception of health, improving one's ability to manage life. It is the central construct of salutogenesis. SOC allows for identification and mobilization of resources to effectively manage or solve problems, promoting health and quality of life. Using Wilson-Cleary's conceptual model we hypothesized that SOC might contribute to self-perception of dental aesthetics. The aim of this study was to investigate whether SOC levels were related to self-perception of dental aesthetics against assessed normative orthodontic treatment need among adolescents...
August 17, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28817741/reconstruction-of-a-severely-atrophied-alveolar-ridge-by-computer-aided-gingival-simulation-and-3d-printed-surgical-guide-a-case-report
#8
In-Seok Song, Mi-Ran Lee, Jae-Jun Ryu, Ui-Lyong Lee
Dental implants positioned in severely atrophied anterior maxillae require esthetic or functional compromises. This case report describes the rehabilitation of a severely atrophied alveolar ridge with a three-dimensional (3D) computer-aided design/computer-aided manufacture (CAD/CAM) surgical guide. A 50-year-old woman had a severely atrophied anterior maxilla with unfavorably positioned dental implants. Functional and esthetic prosthodontic restoration was difficult to achieve. An anterior segmental osteotomy was planned to reposition the dental implants...
August 17, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28817738/compliance-with-supportive-periodontal-treatment-in-patients-with-dental-implants
#9
Kai-Fang Hu, Ying-Chu Lin, Kun-Yen Ho, Yu-Hsiang Chou
PURPOSE: The need for dental implants is increasing, and supportive periodontal treatment can achieve long-term success and prevent peri-implantitis. Contributing factors to noncompliance with long-term scheduled supportive periodontal treatment remain unclear. To investigate whether demographic and clinical characteristics are associated with noncompliance, the authors analyzed data for patients who had received dental implants. MATERIALS AND METHODS: The authors recruited patients participating in a supportive periodontal treatment program after receiving permanent prostheses on implants placed from 2005 to 2013...
August 17, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28817668/titanium-biomaterials-with-complex-surfaces-induced-aberrant-peripheral-circadian-rhythms-in-bone-marrow-mesenchymal-stromal-cells
#10
Nathaniel Hassan, Kirstin McCarville, Kenzo Morinaga, Cristiane M Mengatto, Peter Langfelder, Akishige Hokugo, Yu Tahara, Christopher S Colwell, Ichiro Nishimura
Circadian rhythms maintain a high level of homeostasis through internal feed-forward and -backward regulation by core molecules. In this study, we report the highly unusual peripheral circadian rhythm of bone marrow mesenchymal stromal cells (BMSCs) induced by titanium-based biomaterials with complex surface modifications (Ti biomaterial) commonly used for dental and orthopedic implants. When cultured on Ti biomaterials, human BMSCs suppressed circadian PER1 expression patterns, while NPAS2 was uniquely upregulated...
2017: PloS One
https://www.readbyqxmd.com/read/28817595/predictive-factors-of-the-dimensions-and-location-of-mental-foramen-using-cone-beam-computed-tomography
#11
Juan Muinelo-Lorenzo, Ana Fernández-Alonso, Ernesto Smyth-Chamosa, Juan Antonio Suárez-Quintanilla, Jesús Varela-Mallou, María Mercedes Suárez-Cunqueiro
OBJECTIVE: The mental foramen (MF) hosts main neurovascular structures, making it of crucial importance for surgical procedures. This study aimed to analyze the factors influencing the dimensions and location of the MF. MATERIALS AND METHODS: Cone beam computed tomography (CBCT) scans of 344 patients were examined for MF dimensions, as well as for the distances from the MF to the alveolar crest (MF-MSB), and to the inferior mandibular border (MF-MIB). RESULTS: Gender, mandibular side and presence of accessory mental foramina (AMF) significantly influence MF area...
2017: PloS One
https://www.readbyqxmd.com/read/28817591/susceptibility-of-bovine-dental-enamel-with-initial-erosion-lesion-to-new-erosive-challenges
#12
Gabriela Cristina de Oliveira, Guida Paola Genovez Tereza, Ana Paula Boteon, Brunna Mota Ferrairo, Priscilla Santana Pinto Gonçalves, Thiago Cruvinel da Silva, Heitor Marques Honório, Daniela Rios
This in vitro study evaluated the impact of initial erosion on the susceptibility of enamel to further erosive challenge. Thirty bovine enamel blocks were selected by surface hardness and randomized into two groups (n = 15): GC- group composed by enamel blocks without erosion lesion and GT- group composed by enamel blocks with initial erosion lesion. The baseline profile of each block was determined using the profilometer. The initial erosion was produced by immersing the blocks into HCl 0.01 M, pH 2.3 for 30 seconds, under stirring...
2017: PloS One
https://www.readbyqxmd.com/read/28817337/oral-health-integration-into-a-pediatric-practice-and-coordination-of-referrals-to-a-colocated-dental-home-at-a-federally-qualified-health-center
#13
Nandini Sengupta, Sonal Nanavati, Maria Cericola, Lisa Simon
We have integrated preventive oral health measures into preventive care visits for children at a federally qualified health center in Boston, Massachusetts. The program, started in 2015, covers 3400 children and has increased universal caries risk screening in primary care to 85%, fluoride varnish application rates to 80%, and referrals to a dental home to 35%. We accomplished this by minimizing pressures on providers' workflow, empowering medical assistants to lead the initiative, and utilizing data-driven improvement strategies, alongside colocated coordinated care...
August 17, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28817336/children-s-access-to-dental-care-affected-by-reimbursement-rates-dentist-density-and-dentist-participation-in-medicaid
#14
Natalia I Chalmers, Robert D Compton
OBJECTIVES: To assess the relation between Medicaid reimbursement rates and access to dental care services in the context of dentist density and dentist participation in Medicaid in each state. METHODS: Data were from Early and Periodic Screening, Diagnostic, and Treatment reports for 2014, Medicaid reimbursement rate in 2013, dentist density in 2014, and dentist participation in Medicaid in 2014. We assessed patterns of mediation or moderation. RESULTS: Reimbursement rates and access to dental care were directly related at the state level, but no evidence indicated that higher reimbursement rates resulted in overuse of dental services for those who had access...
August 17, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28817179/autophagy-induction-plays-a-protective-role-against-hypoxic-stress-in-human-dental-pulp-cells
#15
Sam-Young Park, Eun-Gene Sun, Yeonju Lee, Min-Seok Kim, Jae Hyung Kim, Won-Jae Kim, Ji-Yeon Jung
Human dental pulp exposed to hypoxic conditions induces cell death accompanied by autophagy. However, the role of hypoxia-induced autophagy in human dental pulp cells (HDPCs) is unclear. The present study aimed to investigate the role of autophagy in hypoxia-induced apoptosis of HDPCs. Cobalt chloride (CoCl2 ) treated HDPCs, to mimic hypoxic conditions, decreased cell viability. Also, apoptosis-related signal molecules, cleaved caspase-3 and PARP levels, were enhanced in CoCl2 -treated HDPCs. HDPCs exposed to CoCl2 also promoted autophagy, showing upregulated p62 and microtubule-associated protein 1 light chain 3 (LC3)-II levels, typical autophagic markers, and increased acidic autophagolysosomal vacuoles...
August 17, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28817154/the-gold-nun-a-case-of-a-gold-ligature-from-the-15-th-century-and-the-origins-of-restorative-dentistry-in-europe
#16
Eugénia Cunha, Catarina Leal, Miguel Munhós, Isabel Poiares Baptista
We here report the discovery of a gold dental ligature from the late 15(th) century, at the Convent of Santa Clara-a-Velha, in the city of Coimbra, Portugal. A medieval Clare's nun presented the left upper lateral incisor splinted to the canine, since the others three incisors were lost, most probably due to an aggressive periodontal disease. The convent is associated with the medieval upper class, which was well known for its consumption of high levels of sugar. There is a higher prevalence of caries in comparison to other Portuguese skeletal samples of the same time period, as well as a high prevalence of periodontal disease...
August 17, 2017: Anthropologischer Anzeiger; Bericht über die Biologisch-anthropologische Literatur
https://www.readbyqxmd.com/read/28817136/prognosis-of-dental-implants-immediately-placed-in-sockets-affected-by-peri-implantitis-a-retrospective-pilot-study
#17
Eduardo Anitua, Laura Piñas, Leire Begoña, Mohammad Hamdan Alkhraisat
The aim of this study was to describe a protocol and analyze the outcomes of immediate replacement of failed implants due to peri-implantitis. A total of 17 patients (mean age: 58 ± 10 years) had 22 failed implants that were immediately replaced. One implant failed 16 months after insertion, resulting in an implant survival rate of 94.7%. The mean follow-up time was 40 ± 16 months (range: 9-52 months) after insertion. Mesial and distal bone loss were 0.89 ± 0.62 mm and 0.97 ± 0.66 mm, respectively. Immediate implant replacement could be considered in the management of implant failure due to peri-implantitis...
September 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28817130/the-use-of-autogenous-gingival-graft-for-treatment-of-lingual-recession-on-mandibular-anterior-teeth
#18
Gonçalo Assis, Myron Nevins, David M Kim
The goal of this article is to demonstrate the practicality and results of increasing the zone of keratinized tissue on the lingual surface of mandibular anterior teeth via case reports. Calculus is most commonly found on the lingual surface of these teeth, so they are subjected to inflammatory elements resulting in tissue deformation and destruction. Significant attention has been paid to grafting the buccal surface, but there is a paucity of information addressing the lingual surface of mandibular anterior teeth...
September 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28816569/effect-of-cyclic-uniaxial-compressive-stress-on-human-dental-pulp-cells-in-vitro
#19
Hui Yang, Yi-Xuan Shu, Lin-Yan Wang, Wen-Ling Zou, Li-Yang Guo, Mei-Ying Shao, Qian-Hua Gao, Tao Hu
PURPOSE: Teeth are exposed to various forces during functional and parafunctional movements. These processes inevitably affect the dental pulp, and the mechanism of these influences has been the subject of many previous studies using different apparatuses and obtaining different results. In this study, we aimed to investigate the effects of compressive stress on the proliferation and differentiation of human dental pulp cells (hDPCs). MATERIALS AND METHODS: A four-point bending strain system was adopted to apply low-density cyclic uniaxial compressive stress (2,000 µstrain, 0...
August 17, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28816295/-three-dimensional-data-fusion-method-for-tooth-crown-and-root-based-on-curvature-continuity-algorithm
#20
Y J Zhao, Y Liu, Y C Sun, Y Wang
OBJECTIVE: To explore a three-dimensional (3D) data fusion and integration method of optical scanning tooth crowns and cone beam CT (CBCT) reconstructing tooth roots for their natural transition in the 3D profile. METHODS: One mild dental crowding case was chosen from orthodontics clinics with full denture. The CBCT data were acquired to reconstruct the dental model with tooth roots by Mimics 17.0 medical imaging software, and the optical impression was taken to obtain the dentition model with high precision physiological contour of crowns by Smart Optics dental scanner...
August 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
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