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https://www.readbyqxmd.com/read/28415544/%C3%AE-pyrophosphate-a-potential-biomaterial-for-dental-applications
#1
A D Anastasiou, S Strafford, O Posada-Estefan, C L Thomson, S A Hussain, T J Edwards, M Malinowski, N Hondow, N K Metzger, C T A Brown, M N Routledge, A P Brown, M S Duggal, A Jha
Tooth hypersensitivity is a growing problem affecting both the young and ageing population worldwide. Since an effective and permanent solution is not yet available, we propose a new methodology for the restoration of dental enamel using femtosecond lasers and novel calcium phosphate biomaterials. During this procedure the irradiated mineral transforms into a densified layer of acid resistant iron doped β-pyrophosphate, bonded with the surface of eroded enamel. Our aim therefore is to evaluate this densified mineral as a potential replacement material for dental hard tissue...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28406458/behavior-of-human-osteoblast-cells-cultured-on-titanium-discs-in-relation-to-surface-roughness-and-presence-of-melatonin
#2
M Fernanda Sola-Ruiz, Carolina Perez-Martinez, Carlos Labaig-Rueda, Carmen Carda, J Javier Martín De Llano
The aim of this work was to observe the behavior of osteoblast cells cultured in vitro on titanium discs in relation to disc surface roughness and the addition of melatonin to the culture medium. MG63 osteoblast cells were cultivated on 120 Grade 5 Ti divided into three groups: Group E, treated with dual acid etch; Group EP, treated with dual acid etch and calcium phosphate; and Group M, machined. Surface roughness was examined under a laser scanning confocal microscope (CLSM) and scanning electron microscopy (SEM)...
April 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28379386/instability-of-palatal-rugae-following-rapid-maxillary-expansion
#3
Maria Saadeh, Anthony Macari, Ramzi Haddad, Joseph Ghafari
Background: Existing evidence on changes of the palatal rugae following rapid maxillary expansion (RME) is scarce and inconclusive, particularly immediate post-expansion changes in three-dimensional assessments. Objectives: Our aims were to assess the dimensional stability of the palatal rugae in the antero-posterior and transverse dimensions following RME treatment, as well as the three-dimensional changes in palatal volume and area. Material and methods: The sample consisted of the dental casts of 30 adolescents (16 males; 14 females, age 11...
March 31, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28371800/three-dimensional-evaluation-of-the-maxillary-arch-and-palate-in-unilateral-cleft-lip-and-palate-subjects-using-digital-dental-casts
#4
Chiara Generali, Jasmina Primozic, Stephen Richmond, Maria Bizzarro, Carlos Flores-Mir, Maja Ovsenik, Letizia Perillo
Objectives: To assess arch width, palatal surface area, and volume in surgically treated unilateral cleft lip and palate (UCLP) in mixed dentition children in comparison with non-cleft lip and palate (NCLP) children using a 3D laser scanning. Materials and Methods: 38 subjects (Caucasian origin), 5.63-11.9 years of age (mean, 9.33 ± 1.67 years), were included. 19 in each group (UCLP and NCLP). Digital dental casts were obtained using a 3 Shape R700 laser scanner...
March 25, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28368878/eighteen-month-outcomes-of-titanium-frameworks-using-computer-aided-design-and-computer-aided-manufacturing-method
#5
Ilser Turkyilmaz, Neset Volkan Asar
PURPOSE: The aim of the report is to introduce a new software and a new scanner with a noncontact laser probe and to present outcomes of computer-aided design and computer-aided manufacturing titanium frameworks using this new software and scanner with a laser probe. MATERIALS AND METHODS: Seven patients received 40 implants placed using a 1-stage protocol. After all implants were planned using an implant planning software (NobelClinician), either 5 or 6 implants were placed in each edentulous arch...
March 31, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28367999/decreased-amount-of-supporting-alveolar-bone-at-single-rooted-premolars-is-under-estimated-by-2d-examinations
#6
Hsiang-Hsi Hong, Chung-Chieh Chang, Adrienne Hong, Heng-Liang Liu, Yen-Li Wang, Shih-Hao Chang, Tzung-Hai Yen
The purpose of this study was to relate the proportions of bone-supported root length of a 2D view into the amount of a 3D bone-attached root surface area (BA-RSA) by using a dental laser scanner examination. White-light 3D scanning technology was used to probe 36 maxillary and 35 mandibular single-rooted premolars. The bone-supported height (BSH) and BA-RSA at designated levels (95-25%) were compared using statistical t tests. The 100% BSH and BA-RSA of the maxillary/mandibular premolars were 12.6 ± 1...
April 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28364108/-bactericidal-effects-and-smear-layer-removal-of-er-yag-laser-radiation-against-enterococcus-faecalis-in-root-canals
#7
Zongbo Li, Changyun Fang
To evaluate the cleaning ability of Er:YAG laser against Enterococcus faecalis in root canals.
 Methods: The single-rooted human teeth were sterilized and inoculated with Enterococcus faecalis and were randomly assigned into 2 groups. A group of teeth was irrigated with saline during root canal preparation while another group with NaClO. After mechanical preparation, the two groups were randomly divided into 3 subgroups according to the different treatments: Samples, laser radiation, and calcium hydroxide intracanal medication for 7 days...
March 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28358306/effect-of-the-biofilm-age-and-starvation-on-acid-tolerance-of-biofilm-formed-by-streptococcus-mutans-isolated-from-caries-active-and-caries-free-adults
#8
Shan Jiang, Shuai Chen, Chengfei Zhang, Xingfu Zhao, Xiaojing Huang, Zhiyu Cai
Streptococcus mutans (S. mutans) is considered a leading cause of dental caries. The capability of S. mutans to tolerate low pH is essential for its cariogenicity. Aciduricity of S. mutans is linked to its adaptation to environmental stress in oral cavity. This study aimed to investigate the effect of biofilm age and starvation condition on acid tolerance of biofilm formed by S. mutans clinical isolates. S. mutans clinical strains isolated from caries-active (SM593) and caries-free (SM18) adults and a reference strain (ATCC25175) were used for biofilm formation...
March 30, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28350007/laser-beam-melting-3d-printing-of-ti6al4v-based-porous-structured-dental-implants-fabrication-biocompatibility-analysis-and-photoelastic-study
#9
Fei Yang, Chen Chen, QianRong Zhou, YiMing Gong, RuiXue Li, ChiChi Li, Florian Klämpfl, Sebastian Freund, XingWen Wu, Yang Sun, Xiang Li, Michael Schmidt, Duan Ma, YouCheng Yu
Fabricating Ti alloy based dental implants with defined porous scaffold structure is a promising strategy for improving the osteoinduction of implants. In this study, we use Laser Beam Melting (LBM) 3D printing technique to fabricate porous Ti6Al4V dental implant prototypes with three controlled pore sizes (200, 350 and 500 μm). The mechanical stress distribution in the surrounding bone tissue is characterized by photoelastography and associated finite element simulation. For in-vitro studies, experiments on implants' biocompatibility and osteogenic capability are conducted to evaluate the cellular response correlated to the porous structure...
March 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28343670/comparison-of-porcelain-bond-strength-of-different-metal-frameworks-prepared-by-using-conventional-and-recently-introduced-fabrication-methods
#10
Necati Kaleli, Duygu Saraç
STATEMENT OF PROBLEM: Most studies evaluating dental laser sintering systems have focused on the marginal accuracy of the restorations. However, the bond strength at the metal-ceramic interface is another important factor that affects the survival of restorations, and currently, few studies focus on this aspect. PURPOSE: The purpose of this in vitro study was to compare the porcelain bond strength of cobalt-chromium (Co-Cr) metal frameworks prepared by using the conventional lost-wax technique, milling, direct metal laser sintering (DMLS), and laser cusing, a direct process powder-bed system...
March 23, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28337885/role-of-diode-lasers-in-oro-facial-pain-management
#11
F Javed, S V Kellesarian, G E Romanos
With the increasing use of low level laser therapy (LLLT) in clinical dentistry, the aim of the present study was to assess the effectiveness of diode lasers in the management of orofacial pain. Indexed databases were searched without language and time restrictions up to and including July 2016 using different combinations of the following key words: oral, low level laser therapy, dental, pain, diode lasers, discomfort and analgesia. From the literature reviewed it is evident that LLLT is effective compared to traditional procedures in the management of oro-facial pain associated to soft tissue and hard tissue conditions such as premalignant lesions, gingival conditions and dental extractions...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28332922/abstracts-and-talks-from-the-world-federation-for-laser-dentistry-asia-pacific-division-laser-symposium-in-conjunction-with-the-55-th-iranian-dental-association-ida-congress-may-12-15-2015-tehran-iran
#12
https://www.readbyqxmd.com/read/28332068/photobiomodulation-with-led-and-laser-in-repair-of-mandibular-socket-rabbit-clinical-evaluation-histological-and-histomorphometric
#13
Cláudio Rômulo Comunian, Antônio Luis Neto Custódio, Leandro Junqueira de Oliveira, Carlos Eduardo Assis Dutra, Milton D'almeida Ferreira Neto, Cleuza Maria Faria Rezende
PURPOSE: The aim of this study was to evaluate the effects of LED and low-intensity laser on the healing of rabbit dental alveoli. METHODS: A total of 18 rabbits were divided into three groups of six; all rabbits underwent surgical extraction of the first lower right premolar. Following surgery, group 1 received LED irradiation, group 2 received laser irradiation, and group 3 were untreated controls. The initial applications of LED and laser began 48 h after tooth extraction and were given perpendicularly to the dental alveoli...
March 23, 2017: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28328023/identification-of-microorganisms-in-biofluids-of-individuals-with-periodontitis-and-chronic-kidney-disease-using-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry
#14
Levy Anderson César Alves, Rafael Celestino Souza, Taciana Mara Couto da Silva, Andreia Watanabe, Meriellen Dias, Maria Anita Mendes, Ana Lídia Ciamponi
RATIONALE: Chronic kidney disease (CKD) and periodontitis (PD) are important health issues. There is a large variety of microorganisms related to the pathogenesis of periodontitis, and optimising the time and the cost of laboratory assays to detect these organisms is highly valuable in the medical field. METHODS: Bacteria were isolated from saliva and oral biofilm of 30 adolescents and young adults with definite medical and dental diagnosis of CKD and PD, respectively, and proteins were extracted for microorganism identification by means of the matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS) technique...
May 30, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28320540/effect-of-using-different-vehicles-on-the-physicochemical-antimicrobial-and-biological-properties-of-white-mineral-trioxide-aggregate
#15
Bruno Cavalini Cavenago, Aldo Enrique Del Carpio-Perochena, Ronald Ordinola-Zapata, Carlos Estrela, Gustavo Pompermaier Garlet, Mario Tanomaru-Filho, Paulo Henrique Weckwerth, Flaviana Bombarda de Andrade, Marco Antonio Hungaro Duarte
INTRODUCTION: This study evaluated the physicochemical, antimicrobial, and biological properties of white mineral trioxide aggregate (MTA) mixed with aqueous and propylene glycol extracts of Arctium lappa L. and Casearia sylvestris Sw. METHODS: The setting-time test was performed according to American Society for Testing and Materials 266/2008 and flowability by American National Standards Institute/American Dental Association 57/2012 standard specifications. The following parameters were assessed: volumetric change by micro-computed tomography; pH level and calcium ion release measured after 3 hours and 1, 3, 7, and 15 days; antimicrobial effect by the dentin decontamination method with intratubular Enterococcus faecalis viability, verified by using confocal laser scanning microscopy; and biocompatibility by histologic-morphometric analyses of inflammatory infiltrate at subcutaneous implant sites after 15, 30, and 60 days...
March 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28314941/neuropeptide-expression-and-morphometric-differences-in-crushed-alveolar-inferior-nerve-of-rats-effects-of-photobiomodulation
#16
Daniel Oliveira Martins, Fabio Martinez Dos Santos, Adriano Polican Ciena, Ii-Sei Watanabe, Luiz Roberto G de Britto, José Benedito Dias Lemos, Marucia Chacur
Inferior alveolar nerve (IAN) injuries may occur during various dental routine procedures, especially in the removal of impacted lower third molars, and nerve recovery in these cases is a great challenge in dentistry. Here, the IAN crush injury model was used to assess the efficacy of photobiomodulation (PBM) in the recovery of the IAN in rats following crushing injury (a partial lesion). Rats were divided into four experimental groups: without any procedure, IAN crush injury, and IAN crush injury with PBM and sham group with PBM...
March 17, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28304212/influence-of-laser-microtextured-surface-collar-on-marginal-bone-loss-and-peri-implant-soft-tissue-response-a-systematic-review-and-meta-analysis
#17
Zhaozhao Chen, Yujiao Zhang, Junying Li, Hom-Lay Wang, Haiyang Yu
BACKGROUND: Laser-microtextured surface (LMS) dental implant collar appears to promote a more tooth-like gingival collagen fiber attachment, which may help to stabilize the peri-implant tissues. The purpose of this systematic review was to assess the clinical effect of LMS on crestal bone level and peri-implant soft tissue response, versus non-LMS collar. METHODS: Electronic and manual literature searches were performed by two independent reviewers for articles written in English up to December 2016...
March 17, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28302948/the-accuracy-of-the-cad-system-using-intraoral-and-extraoral-scanners-for-designing-of-fixed-dental-prostheses
#18
Sakura Shimizu, Akikazu Shinya, Soichi Kuroda, Harunori Gomi
The accuracy of prostheses affects clinical success and is, in turn, affected by the accuracy of the scanner and CAD programs. Thus, their accuracy is important. The first aim of this study was to evaluate the accuracy of an intraoral scanner with active triangulation (Cerec Omnicam), an intraoral scanner with a confocal laser (3Shape Trios), and an extraoral scanner with active triangulation (D810). The second aim of this study was to compare the accuracy of the digital crowns designed with two different scanner/CAD combinations...
March 8, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28298816/effect-of-gallium-arsenic-laser-on-photosensitized-periodontopathic-anaerobic-organisms-an-in-vitro-study
#19
Setu Mathur, Shaila Veerappa Kothiwale, Buddhi Prakash Nag, Tanu Mathur, Ashoka Bhansali, Rohit Kumar Khatri
BACKGROUND: The mainstay of periodontal therapy is mechanical removal of subgingival plaque. There is considerable interest in supplementing it with the use of antibiotics and antiseptics. Many drawbacks are associated with these adjunctive pharmacological regimens such as development of resistance to antibiotics and disruption of microflora of the gastrointestinal tract. Hence, alternate means of killing subgingival bacteria are clearly desirable. One such method is the use of laser...
July 2016: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/28298815/ethical-guidelines-animal-profile-various-animal-models-used-in-periodontal-research-with-alternatives-and-future-perspectives
#20
REVIEW
Mohan Kumar Pasupuleti, Subramanya Shetty Molahally, Supraja Salwaji
Laboratory animal models serve as a facilitator to investigate the etiopathogenesis of periodontal disease, are used to know the efficacy of reconstructive and regenerative procedures, and are also helpful in evaluation of newer therapeutic techniques including laser and implant therapies prior to application in the human beings. The aim of this review is to know the different animal models used in various specialties of dental research and to know the ethical guidelines prior to the usage of experimental models with main emphasis on how to refine, replace, and reduce the number of animal models usage in the laboratory...
July 2016: Journal of Indian Society of Periodontology
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