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Lasers in dentistry

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https://www.readbyqxmd.com/read/30087739/assessment-of-photodynamic-therapy-and-nanoparticles-effects-on-caries-models
#1
Ali Saafan, Mohamed H Zaazou, Marwa K Sallam, Osama Mosallam, Heba A El Danaf
AIM: To assess the antibacterial competence of 650 nm diode laser, Methylene Blue (MB) and Silver Nano-Particles (Ag NPs) on Streptococcus mutans in biofilm-induced caries models. MATERIAL AND METHODS: One hundred eighty specimens were prepared and equally divided into 6 groups. One group was untreated (control), and the others were subjected to either MB, laser, Ag NPs, the combination of MB and Laser or MB, laser and Ag NPs. RESULTS: Comparison of the log10 mean Colony Forming Units per millilitre (CFU/ml) values of each of the treated 5 groups and the control group was found statistically significant (P-value < 0...
July 20, 2018: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/30083309/near-infrared-laser-mediated-drug-release-and-antibacterial-activity-of-gold-nanorod-sputtered-titania-nanotubes
#2
Kyoung-Suk Moon, Young-Bum Park, Ji-Myung Bae, Seunghan Oh
The infection control of implants is one of the hot issues in the field of medicine and dentistry. In this study, we prepared gold nanorod-sputtered titania nanotubes on titanium surface, which is the main component of implant material, and aimed to estimate the remote-controlled tetracycline release and resulting antibacterial effects of gold nanorod-sputtered titania nanotubes using near-infrared laser irradiation. Gold nanorods prepared by ion plasma sputtering (aspect ratio = 1:3) showed optical properties like those of chemically synthesized gold nanorods, exhibiting photothermal effects in the near-infrared region, as demonstrated using field-emission scanning electron microscopy, transmission electron microscopy, and diffuse ultraviolet-visible-near-infrared spectrophotometry...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/30071781/enamel-resistance-to-demineralisation-around-orthodontic-brackets-after-co-2-laser-irradiation-a-randomised-clinical-trial
#3
Tuqa Raghis, Ghiath Mahmoud, Ahmed Abdullah, Omar Hamadah
OBJECTIVE: To evaluate the clinical effect of 10.6 µm CO2 laser irradiation on the formation of demineralised lesions (DLs) around orthodontic brackets. DESIGN: A two-arm, split-mouth, randomised clinical trial (RCT). SETTING: The Orthodontic Department, Faculty of Dentistry, Damascus University, Syria. PARTICIPANTS: Twenty-six patients with a total of 520 teeth were recruited into the trial. METHOD: Two reversed quadrants of the dental arches in each patient were randomly allocated to CO2 laser application around the orthodontic brackets...
August 2, 2018: Journal of Orthodontics
https://www.readbyqxmd.com/read/30030124/in-vitro-biofilm-formation-on-resin-based-composites-cured-under-different-surface-conditions
#4
Andrei C Ionescu, Gloria Cazzaniga, Marco Ottobelli, Jack L Ferracane, Gaetano Paolone, Eugenio Brambilla
OBJECTIVES: The interfacial conditions occurring during light-curing procedures of resin-based composites (RBCs) influence their surface properties and therefore the biological behavior of the material. This study aimed to evaluate the influence of different surface curing conditions on in vitro biofilm formation by Streptococcus mutans and mixed oral microflora, in the presence or absence of surface salivary pre-conditioning. METHODS: Two nanohybrid RBCs and four interfacial curing conditions (open air, argon, nitrogen and glycerin) were evaluated...
July 17, 2018: Journal of Dentistry
https://www.readbyqxmd.com/read/30026890/lanap-periodontics-and-beyond-a-review
#5
Amrita Jha, Vivek Gupta, Roopa Adinarayan
Laser has emerged as an adjunct in several treatment modalities in dentistry in the past few decades. This less invasive bladeless technique is bringing revolutionary outcomes in a plethora of periodontal treatment procedures as well. A unique ameliorative approach termed LANAP, described as laser-assisted new attachment procedure was developed by Gregg and McCarthy. In 1990 they introduced an innovative treatment for diseases of gums incorporating pulsed neodymium yttrium aluminum garnet (Nd: YAG) 1064 nm wavelength laser (PerioLase MVP7)...
2018: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/29999253/validation-of-a-windowing-protocol-for-accurate-in-vivo-tooth-segmentation-using-i-cat-cone-beam-computed-tomography
#6
Babak Rastegar, Brice Thumilaire, Guillaume A Odri, Sergio Siciliano, Jan Zapała, Pierre Mahy, Raphael Olszewski
BACKGROUND: Validation of three-dimensional (3D) reconstructions of full dental arches with crowns and roots based on cone beam computed tomography (CBCT) imaging represents a key issue in 3D digital dentistry. OBJECTIVES: The aim of the study was to search for the most accurate in vivo windowing-based manual tooth segmentation using CBCT. The null hypothesis was that all applied windowing protocols were equivalent in terms of in vivo tooth volume measurement using CBCT...
July 12, 2018: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29988235/efficacy-of-erbium-doped-yttrium-aluminum-garnet-laser-with-casein-phosphopeptide-amorphous-calcium-phosphate-with-and-without-fluoride-for-remineralization-of-white-spot-lesions-around-orthodontic-brackets
#7
Sogra Yassaei, Hossein Aghili, Neda Shahraki, Isa Safari
Objective: This study aimed to assess the efficacy of erbium-doped yttrium aluminum garnet (Er:YAG) laser, pastes containing casein phosphopeptide amorphous calcium phosphate (CPP-ACP) with and without fluoride and their combination for prevention of white spot lesions in the enamel. Materials and Methods: This in vitro experimental study was conducted on 90 extracted sound premolars. The teeth were then randomly divided into six groups of 15: (1) Control, (2) laser, (3) CPP-ACP with fluoride (GC MI Paste, Recaldent™ 900 ppm as NaF), (4) CPP-ACP without fluoride (GC Tooth Mousse Recaldent™), (5) laser + CPP-ACP with fluoride, and (6) laser + CPP-ACP without fluoride...
April 2018: European Journal of Dentistry
https://www.readbyqxmd.com/read/29970828/red-635-nm-near-infrared-808-nm-and-violet-blue-405-nm-photobiomodulation-potentiality-on-human-osteoblasts-and-mesenchymal-stromal-cells-a-morphological-and-molecular-in-vitro-study
#8
Alessia Tani, Flaminia Chellini, Marco Giannelli, Daniele Nosi, Sandra Zecchi-Orlandini, Chiara Sassoli
Photobiomodulation (PBM) has been used for bone regenerative purposes in different fields of medicine and dentistry, but contradictory results demand a skeptical look for its potential benefits. This in vitro study compared PBM potentiality by red (635 ± 5 nm) or near-infrared (NIR, 808 ± 10 nm) diode lasers and violet-blue (405 ± 5 nm) light-emitting diode operating in a continuous wave with a 0.4 J/cm² energy density, on human osteoblast and mesenchymal stromal cell (hMSC) viability, proliferation, adhesion and osteogenic differentiation...
July 3, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29935726/a-pilot-study-of-laser-energy-transmission-through-bone-and-gingiva
#9
Doreen Y Ng, Ambrose K Chan, Oyku Dalci, Peter Petocz, Alexandra K Papadopoulou, M Ali Darendeliler
BACKGROUND: The use of low-level laser therapy is growing in the field of dentistry especially in orthodontics to speed up tooth movement and in implantology to aid osseointegration. In these dental applications, the laser energy needs to penetrate through the periodontium to the target site to stimulate photobiomodulation. The percentage of energy loss when laser is transmitted through the periodontium has not been previously studied. With the use of an 808-nanometer diode laser, the aim was to investigate the percentage loss of laser energy when transmitted through the periodontium to the extraction socket...
August 2018: Journal of the American Dental Association
https://www.readbyqxmd.com/read/29898023/immediate-laser-induced-hemostasis-in-anticoagulated-rats-subjected-to-oral-soft-tissue-surgery-a-double-blind-study
#10
COMPARATIVE STUDY
Flavio Halak de Oliveira Campos, Lorraine Braga Ferreira, Marcelo Munhoes Romano, Maria Stella Moreira, Carlos de Paula Eduardo, Karen Müller Ramalho
Given the growing trend towards medical indications for continuous use of anticoagulants, the number of patients on these medications continues to rise. The management of patients on oral anticoagulants requiring oral surgical procedures has aroused much controversy. Changes in an anticoagulation regimen are associated with an increased risk of thromboembolism. However, it seems logical and advantageous for the patients' health if surgery could be performed without any change to the anticoagulation therapy...
June 7, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29874972/effects-of-low-intensity-laser-therapy-on-the-stability-of-orthodontic-mini-implants-a-randomised-controlled-clinical-trial
#11
Ahmed Mohamed Abohabib, Mona Mohamed Fayed, Amr H Labib
OBJECTIVE: To investigate the effect of low-intensity laser therapy on mini-implant stability using resonance frequency analysis during canine retraction with fixed appliances. DESIGN: A split-mouth randomised clinical trial. SETTING: Subjects were recruited and treated in the outpatient clinic, Department of Orthodontics, Faculty of Dentistry, Cairo University. PARTICIPANTS: Fifteen subjects with mean age 20.9 (±3...
June 6, 2018: Journal of Orthodontics
https://www.readbyqxmd.com/read/29724987/platelet-rich-plasma-prp-rinses-for-the-treatment-of-non-responding-oral-lichen-planus-a-case-report
#12
Elisabetta Merigo, Aldo Oppici, Anna Parlatore, Luigi Cella, Fabio Clini, Matteo Fontana, Carlo Fornaini
Platelet-rich plasma (PRP) has been proposed for different applications in the medical field and in maxillofacial surgery thanks to its many growth factors, such as epidermal growth factor (EGF), fibroblast growth factor (FGF), and keratinocyte growth factor (KGF). Oral lichen planus (OLP) is a disease that affects the oral mucosa in a chronic way. This disease frequently worsens the quality of life of patients, particularly when clinical manifestations are of the erythematous or erosive/ulcerative type. The properties of PRP that are supported by scientific literature in both oral medicine and other medical fields have suggested the introduction of PRP in clinical practice for the medical treatment of different soft tissues diseases, such as when OLP patients do not respond to conventional therapies, or when conventional treatments have some contraindications or side effects...
February 6, 2018: Biomedicines
https://www.readbyqxmd.com/read/29722183/near-infrared-low-level-laser-therapy-and-cell-proliferation-the-emerging-role-of-redox-sensitive-signal-transduction-pathways
#13
REVIEW
Mario Migliario, Maurizio Sabbatini, Carmen Mortellaro, Filippo Renò
Lasers devices are widely used in various medical fields (e.g. surgery, dermatology, dentistry, rehabilitative medicine, etc) for different applications, ranging from surgical ablation of tissues to biostimulation and pain relief. Laser is an electromagnetic radiation which effects on biological tissues strongly depends on a number of physical parameters. Laser wavelength, energy output, irradiation time and modality, temperature and tissue penetration properties have to be set up according to the clinical target tissue and the desired effect...
May 2, 2018: Journal of Biophotonics
https://www.readbyqxmd.com/read/29627206/comparative-analysis-of-the-microstructures-and-mechanical-properties-of-co-cr-dental-alloys-fabricated-by-different-methods
#14
Yanan Zhou, Ning Li, Jiazhen Yan, Qiang Zeng
STATEMENT OF PROBLEM: Limited information is available regarding the microstructures and mechanical properties of Co-Cr dental alloys prepared using conventional casting (CAST), computer numerical control (CNC) milling, and selective laser melting (SLM). PURPOSE: The purpose of this in vitro study was to evaluate the mechanical properties and microstructures of Co-Cr dental alloys fabricated using conventional casting, computer numerical control milling, and selective laser melting and to estimate the potential of applying the SLM technique in prosthetic dentistry...
April 5, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29588823/histological-evaluation-of-orthodontic-tooth-movement-following-low-level-laser-irradiation-in-rabbits
#15
Mostafa Abtahi, Nasrollah Saghravanian, Maryam Poosti, Hooman Shafaee
Background: Reduction of orthodontic treatment time is a major concern for orthodontists. Low level laser therapy (LLL) has been widely used in dentistry and it has been claimed that it could stimulate bone formation. Objective: The aim of the present study was to evaluate histological effects of LLL on alveolar bone remodeling during experimental tooth movement in rabbits. Methods: In this experimental study which was performed in the animal lab of Mashhad Dental School in 2016 twenty pre-pubertal female albino rabbits with the mean age of 8±1 weeks were randomly assigned into two groups...
January 2018: Electronic Physician
https://www.readbyqxmd.com/read/29582585/low-level-laser-therapy-as-an-adjunct-to-connective-tissue-graft-procedure-in-the-treatment-of-gingival-recession-defects-a-systematic-review-and-meta-analysis
#16
REVIEW
Zohaib Akram, Fahim Vohra, Fawad Javed
OBJECTIVE: The aim of this study was to systematically evaluate the effectiveness of low level laser therapy (LLLT) as an adjunct to connective tissue graft (CTG) procedure for the treatment of gingival recession (GR). MATERIALS AND METHODS: The addressed PICO question was; "In patients with Miller Class I or II recession defects (Population), what is the effect of LLLT as adjunct to CTG (Intervention) in comparison to CTG alone (Comparison) on gingival recession depth (Outcome)" Electronic databases were searched up to December 2017...
March 26, 2018: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/29537665/pulpotomy-management-using-laser-diode-in-pediatric-patient-with-severe-hemophilia-a-under-general-anesthesia-a-case-report
#17
Vo Truong Nhu Ngoc, Trinh Do Van Nga, Dinh-Toi Chu, Le Quynh Anh
Hemophilia-a bleeding disorder due to the lack of clotting factors-is mostly induced by genetic factors. Its most common type is hemophilia A. Hemorrhage in hemophilia A may occur in several different sites of the body, including those inside the oral cavity, such as mucous membrane and gum. However, only a few studies and case reports on dental issues of hemophilia A patients have been conducted. In clinical dentistry, treatment procedures are invasive, possibly leading to more severe bleeding, especially in hemophilia A cases...
May 2018: Special Care in Dentistry
https://www.readbyqxmd.com/read/29462711/exogenous-mineralization-of-hard-tissues-using-photo-absorptive-minerals-and-femto-second-lasers-the-case-of-dental-enamel
#18
A D Anastasiou, S Strafford, C L Thomson, J Gardy, T J Edwards, M Malinowski, S A Hussain, N K Metzger, A Hassanpour, C T A Brown, A P Brown, M S Duggal, A Jha
A radical new methodology for the exogenous mineralization of hard tissues is demonstrated in the context of laser-biomaterials interaction. The proposed approach is based on the use of femtosecond pulsed lasers (fs) and Fe3+ -doped calcium phosphate minerals (specifically in this work fluorapatite powder containing Fe2 O3 nanoparticles (NP)). A layer of the synthetic powder is applied to the surface of eroded bovine enamel and is irradiated with a fs laser (1040 nm wavelength, 1 GHz repetition rate, 150 fs pulse duration and 0...
April 15, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29450763/effects-of-915-nm-laser-irradiation-on-human-osteoblasts-a-preliminary-in-vitro-study
#19
Giovanni Mergoni, Paolo Vescovi, Silvana Belletti, Jacopo Uggeri, Samir Nammour, Rita Gatti
Photobiomodulation (PBM) is a non-invasive treatment that uses laser or led devices making its effects a response to light and not to heat. The possibility of accelerating dental implant osteointegration and orthodontic movements and the need to treat refractory bone lesions, such as bisphosphonate related osteonecrosis of the jaws, has led researchers to consider the effects of PBM on bone for dentistry purposes. The aim of our study was to investigate the effects of 915 nm light supplied with a GaAs diode laser on human osteoblasts in vitro...
August 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29399304/the-effect-of-photobiomodulation-on-the-depth-of-anesthesia-during-endodontic-treatment-of-teeth-with-symptomatic-irreversible-pulpitis-double-blind-randomized-clinical-trial
#20
Sholeh Ghabraei, Nasim Chiniforush, Behnam Bolhari, Mohsen Aminsobhani, Abbas Khosarvi
Introduction: Achieving appropriate anesthesia in patients with symptomatic irreversible pulpitis in mandibular molars during endodontic treatment is always one of the most challenging aspects. Photobiomodulation (PBM) has been used in dentistry due to its anti-inflammatory properties and regenerative effects. This study evaluates the effects of PBM in the depth of anesthesia in inferior alveolar nerve block. Methods: In this randomized clinical trial, 44 patients requiring endodontic treatment in lower molar, left or right were selected, half of them were randomly treated with PBM therapy...
2018: Journal of Lasers in Medical Sciences
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