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https://www.readbyqxmd.com/read/29340524/efficacy-of-removal-of-cariogenic-bacteria-and-carious-dentin-by-ablation-using-different-modes-of-er-yag-lasers
#1
A Baraba, L Kqiku, D Gabrić, Ž Verzak, K Hanscho, I Miletić
The primary objective of this in vitro study was to evaluate the efficiency of removal of cariogenic bacteria and carious dentin by ablation using two lasers: fluorescence-feedback controlled (FFC) Er:YAG laser and different pulses of Er:YAG laser based on variable square pulse technology (VSPt). The secondary objective was to measure the temperature during laser ablation of carious tissue. Seventy-two extracted human molars were used in this study. Sixty teeth with carious dentin were randomly divided into four experimental groups according to the treatment for caries removal: group 1: 400 µs (FFC group); group 2: super short pulse (SSP group, 50 µs pulse); group 3: medium short pulse (MSP group, 100 µs pulse); group 4: short pulse (SP group, 300 µs pulse) and one positive control group with no treatment...
January 11, 2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/29327482/streptococcus-oralis-maintains-homeostasis-in-supragingival-biofilms-by-antagonizing-cariogenic-pathogen-streptococcus-mutans
#2
Thomas Thurnheer, Georgios N Belibasakis
Bacteria residing in oral biofilms live in a state of dynamic equilibrium with one another. The intricate synergistic or antagonistic interactions between them are crucial for determining this balance. Using the 6-species Zürich "supragingival" biofilm model, this study aimed to investigate interactions regarding growth and localization of the constituent species. As control, an inoculum containing all six strains was used, whereas in each of the further five inocula one of the bacterial species was absent, and in the last both streptococci were absent...
January 11, 2018: Molecular Oral Microbiology
https://www.readbyqxmd.com/read/29315011/bioluminescence-analysis-of-antibacterial-photodynamic-therapy-using-methylene-blue-mediated-by-low-intensity-level-laser-against-cariogenic-biofilms
#3
Fernando Luis Florez Esteban, Morgana Regina Mendonça de Oliveira, Osmir Batista de Oliveira Júnior, Rochelle Denise Hiers, Sharukh Soli Khajotia, Hermes Pretel
OBJECTIVE: A non-destructive and real-time bioluminescence (BL) assay was used to determine the utility of antimicrobial photodynamic therapy (aPDT) treatments mediated by methylene blue (MB) and laser irradiation (LI) against intact biofilms that are capable of producing caries (cariogenic). The efficacy of antibacterial photodynamic treatments has been currently determined by using either viable colony counts (VCC) or metabolic assays (Alamar Blue) that were demonstrated to have critical limitations when used on microcolony-forming bacteria such as Streptococcus mutans...
January 9, 2018: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29298403/intrapulpal-temperature-increases-caused-by-445-nm-diode-laser-assisted-debonding-of-self-ligating-ceramic-brackets-during-simulated-pulpal-fluid-circulation
#4
Steffen Stein, Johannes Wenzler, Andreas Hellak, Michael Schauseil, Heike Korbmacher-Steiner, Andreas Braun
OBJECTIVE: This study investigated temperature increases in dental pulp resulting from laser-assisted debonding of ceramic brackets using a 445-nm diode laser. MATERIALS AND METHODS: Eighteen ceramic brackets were bonded in standardized manner to 18 caries-free human third molars. Pulpal fluid circulation was simulated by pumping distilled water at 37°C through the pulp chamber. The brackets were irradiated with a 445-nm diode laser. Temperatures were measured using a thermal camera at points P1 (center of the pulp) and P2 (in the hard dental tissue) at the baseline (T0), at the start and end of laser application (T1 and T2), and the maximum during the sequence (Tmax)...
January 3, 2018: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29284107/assessing-the-appearance-and-fluorescence-of-resin-infiltrated-white-spot-lesions-with-caries-detection-devices
#5
K Markowitz, K Carey
OBJECTIVE: This in vitro study examined the effectiveness of caries detector devices in assessing the ability of resin infiltration (RI) (Icon, DMG-Hamburg, Hamburg, Germany) to improve the optical properties of enamel white spot lesions (WSLs). METHODS AND MATERIALS: Ten caries-free third molars were used. Photographs, a subjective visual assessment of the photographs, fluorescent camera (FC) images using the Spectra (Air Techniques, Melville, NY, USA), and laser fluorescent (LF) readings using the DIAGNOdent (KaVo, Biberach, Germany) were obtained from each tooth's buccal surface...
January 2018: Operative Dentistry
https://www.readbyqxmd.com/read/29279762/detection-of-proximal-caries-using-quantitative-light-induced-fluorescence-digital-and-laser-fluorescence-a-comparative-study
#6
Hyung-In Yoon, Min-Jeong Yoo, Eun-Jin Park
PURPOSE: The purpose of this study was to evaluate the in vitro validity of quantitative light-induced fluorescence-digital (QLF-D) and laser fluorescence (DIAGNOdent) for assessing proximal caries in extracted premolars, using digital radiography as reference method. MATERIALS AND METHODS: A total of 102 extracted premolars with similar lengths and shapes were used. A single operator conducted all the examinations using three different detection methods (bitewing radiography, QLF-D, and DIAGNOdent)...
December 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/29261013/performance-of-different-methods-for-detection-of-incipient-occlusal-caries-lesions-an-in-vitro-study
#7
Sinem Akgul, Oya Bala, İhsan Yikilgan
OBJECTIVE: The aim of this in vitro study was to evaluate the diagnostic performance of visual inspection (VI), laser fluorescence (LF pen), fluorescence camera (FC), and alternating current impedance spectroscopy technique (ACIST) for detection of incipient occlusal caries lesions. Histology was used as the gold standard to determine the interexaminer reliability of the methods, among three examiners with different levels of experiences (Examiner 1: 5 years; examiner 2: 10 years; and examiner 3: 25 years)...
December 20, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29197434/erbium-laser-technology-vs-traditional-drilling-for-caries-removal-a-systematic-review-with-meta-analysis
#8
REVIEW
Siying Tao, Lan Li, He Yuan, Sibei Tao, Yiming Cheng, Libang He, Jiyao Li
OBJECTIVE: The study aimed to assess the efficacy of erbium laser technology compared with traditional drilling for caries removal. METHODS: A systematic search was conducted through Medline via PubMed, Embase, Cochrane databases, CNKI till December 2016. Randomised controlled trials, quasi-randomized controlled trials, or controlled clinical trials with data comparing the efficacy of erbium laser technology versus traditional drilling for caries removal were included...
December 2017: Journal of Evidence-based Dental Practice
https://www.readbyqxmd.com/read/29179355/use-of-vital-pulp-therapies-in-primary-teeth-with-deep-caries-lesions
#9
(no author information available yet)
PURPOSE: This manuscript presents evidence-based guidance on the use of vital pulp therapies for treatment of deep caries lesions in children. A guideline panel convened by the American Academy of Pediatric Dentistry formulated evidence-based recommendations on three vital pulp therapies: indirect pulp treatment (IPT; also known as indirect pulp cap), direct pulp cap (DPC), and pulpotomy. METHODS: The basis of the guideline's recommendations was evidence from "Primary Tooth Vital Pulp Therapy: A Systematic Review and Meta-Analysis...
September 15, 2017: Pediatric Dentistry
https://www.readbyqxmd.com/read/29160402/effect-of-a-bioactive-glass-ceramic-on-the-control-of-enamel-and-dentin-erosion-lesions
#10
Michelle Alexandra Chinelatti, Camila Tirapelli, Silmara Aparecida Milori Corona, Renato Goulart Jasinevicius, Oscar Peitl, Edgar Dutra Zanotto, Fernanda de Carvalho Panzeri Pires-de-Souza
This study evaluated the effect of a bioactive glass ceramic for the control of erosion and caries lesions. Fragments (n=10) of bovine enamel and root dentin received daily application of different treatments (Biosilicate; Acidulated Phosphate Fluoride- APF; Untreated - control) during the performance of erosive cycles. Surfaces were analyzed with 3D optical profilometry to quantify the superficial loss in four periods (1, 7, 14 and 21 days), as well as the lesion depth with confocal laser scanning microscopy...
July 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29119417/effect-of-methylene-blue-mediated-antimicrobial-photodynamic-therapy-on-dentin-caries-microcosms
#11
Daniela Alejandra Cusicanqui Méndez, Eliezer Gutierrez, Evandro José Dionísio, Thaís Marchini Oliveira, Marília Afonso Rabelo Buzalaf, Daniela Rios, Maria Aparecida Andrade Moreira Machado, Thiago Cruvinel
Antimicrobial photodynamic therapy (aPDT) has been proposed as an adjuvant treatment of dental caries, although there are no well-defined protocols to its clinical application. This study aimed to evaluate the influence of aPDT on the viability of microorganisms, vitality of biofilms, and lactic acid production of dentin caries microcosms. Biofilms were grown on bovine dentin discs in anaerobic conditions at 37 °C for 5 days, inoculating infected carious dentin in modified McBain medium plus 1% sucrose. The biofilms were treated by the combination of deionized water or 100 mg L(-1) methylene blue (MB) with 0, 37...
November 8, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29116301/clinical-performance-of-fluorescence-based-methods-for-detection-of-occlusal-caries-lesions-in-primary-teeth
#12
Laura Regina Antunes Pontes, Tatiane Fernandes Novaes, Bruna Lorena Pereira Moro, Mariana Minatel Braga, Fausto Medeiros Mendes
We aimed to investigate the performance of fluorescence-based methods (FBMs), compared to visual inspection after histological validation, in detecting and assessing the activity status of occlusal carious lesions in primary teeth. One examiner evaluated 50 primary molars close to exfoliation in 24 children. Teeth were assessed using quantitative light-induced fluorescence (QLF) and pen-type laser fluorescence (LFpen). After exfoliation, histological validation was performed. Teeth were cut and sections were evaluated for lesion depth and activity status (after utilization of a pH indicator) under a stereomicroscope...
November 6, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/29099682/er-cr-ysgg-laser-energy-delivery-pulse-and-power-effects-on-enamel-surface-and-erosive-resistance
#13
Renan Mota de Oliveira, Vinicius Matsuzaki de Souza, Camila Machado Esteves, Ynara Bosco de Oliveira Lima-Arsati, Alessandra Cassoni, José Augusto Rodrigues, Aldo Brugnera Junior
BACKGROUND: High power lasers have been suggested as a useful tool for dental caries and erosion prevention due to the increase of enamel acid resistance. OBJECTIVE: to evaluate the effect of Er,Cr:YSGG (erbium,chromium:yttrium, scandium, gallium, garnet) laser irradiation pulse frequency and power on enamel surface and acid erosion resistance. METHODS: By combining pulse frequency (5-75 Hz) and power settings (0.10-1.00 W), 20 irradiated groups and one nonirradiated control group were tested...
November 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29071038/evaluation-of-the-effect-of-different-laser-activated-bleaching-methods-on-enamel-susceptibility-to-caries-an-in-vitro-mode
#14
Sajjad Ashnagar, Abbas Monzavi, Mehdi Abbasi, Mahdi Aghajani, Nasim Chiniforush
Introduction: Today, bleaching is a routine noninvasive alternative for treatment of discolored teeth. The aim of this study was to determine whether conventional or laser activated bleaching predispose teeth to develop caries or not. Methods: Sixty human molars were mounted on acrylic cylinders and their Knoop microhardness (KHN) as well as DIAGNOdent (DD) values were recorded. They were divided into 4 experimental groups; G1) conventional bleaching with 40% hydrogen peroxide gel, G2) Diode laser assisted bleaching with same gel, G3) Nd:YAG laser assisted bleaching with the same gel, G4) control group...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/29071020/in-vitro-comparison-of-fluoride-gel-alone-and-in-combination-with-er-cr-ysgg-laser-on-reducing-white-spot-lesions-in-primary-teeth
#15
Fatemeh Molaasadollah, Mohammad Asnaashari, Fatemeh Mashhadi Abbas, Maral Jafary
Introduction: Laser therapy has been suggested as a method for caries-prevention, and ErCr:YSGG laser is increasingly used in dentistry. This study aimed to compare the efficacy of fluoride gel alone and in conjunction with Er,Cr:YSGG laser for remineralization of white spot lesions (WSLs) in primary teeth. Methods: This study was conducted on 20 primary teeth with WSLs extracted for orthodontic reasons. Three sections were made of each tooth at the site of WSLs. The surface area of WSLs was measured under a stereomicroscope at ×25 magnification...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/29070150/use-of-vital-pulp-therapies-in-primary-teeth-with-deep-caries-lesions
#16
Vineet Dhar, Abdullah A Marghalani, Yasmi O Crystal, Ashok Kumar, Priyanshi Ritwik, Ozlem Tulunoglu, Laurel Graham
PURPOSE: This manuscript presents evidence-based guidance on the use of vital pulp therapies for treatment of deep caries lesions in children. A guideline panel convened by the American Academy of Pediatric Dentistry formulated evidence-based recommendations on three vital pulp therapies: indirect pulp treatment (IPT; also known as indirect pulp cap), direct pulp cap (DPC), and pulpotomy. METHODS: The basis of the guideline's recommendations was evidence from "Primary Tooth Vital Pulp Therapy: A Systematic Review and Meta-Analysis...
September 15, 2017: Pediatric Dentistry
https://www.readbyqxmd.com/read/29050026/new-preventive-approaches-part-i-functional-peptides-and-other-therapies-to-prevent-tooth-demineralization
#17
Marília Afonso Rabelo Buzalaf, Juliano Pelim Pessan
The limited effect of fluoride on root caries has prompted the study of new preventive therapies, which involve recently developed functional peptides, lasers, phosphate-based technologies, among several other approaches. Most of the specific peptides currently investigated have been developed based on the available information related to the protective action of salivary proteins, including statherin-derived peptides. Other peptides include 8DSS, self-assembling peptide P11-4, antimicrobial peptides, and casein phosphopeptides combined with amorphous calcium phosphate...
2017: Monographs in Oral Science
https://www.readbyqxmd.com/read/29050023/monitoring-of-root-caries-lesions
#18
Iain A Pretty
The early detection of root caries is essential for the implementation of appropriate preventive therapeutic regimes. Subsequent monitoring of lesions is required to determine the outcomes of such therapies. While much research activity has been seen in the detection and monitoring of enamel caries, this has not been seen in root caries - despite the possibilities for shorter clinical trials due to the more rapid remineralization and arrest of such lesions. The main stay of both clinical practice and research has been the use of visual tactile criteria including, hardness, texture, the presence or absence of cavitation, and color...
2017: Monographs in Oral Science
https://www.readbyqxmd.com/read/29047979/theoretical-imaging-study-of-early-caries-by-a-laser-induced-rayleigh-wave
#19
Yuan Ling, Mei Song, Shen Zhonghua, Ni Xiaowu, Lu Jian
Vivo human teeth are scanned by computed tomography through three-dimensional (3D) reconstruction technology. Geometric models of teeth are built. Based on that, a physical model of the laser induced acoustic waves propagating in teeth is established, and the finite element method is used to solve this physical model. As the velocity of the Rayleigh wave is sensitive to the elastic modulus of the teeth, the parameters, such as the position, demineralization degree, depth, and morphology of the caries, can be evaluated by the velocity field of the Rayleigh wave, which propagate in teeth...
September 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/29032514/surface-roughness-and-bacterial-adhesion-on-root-dentin-treated-with-diode-laser-and-conventional-desensitizing-agents
#20
Maiza S Cury, Camilla B Silva, Ruchele D Nogueira, Michelle G D Campos, Regina G Palma-Dibb, Vinicius R Geraldo-Martins
The treatments for dentin hypersensitivity (DH) may change the surface roughness of the root dentin, which can lead to biofilm accumulation, increasing the risk of root caries. The aim was to compare the surface roughness of root dentin after different treatments of DH and the biofilm formation on those surfaces. After initial surface roughness (Sa) assessment, 50 bovine root fragments received the following treatments (n = 10): G 1-no treatment; G2-5% sodium fluoride varnish; G3-professional application of a desensitizing dentifrice; G4-toothbrushing with a desensitizing dentifrice; and G5-diode laser application (908 nm; 1...
October 14, 2017: Lasers in Medical Science
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