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erbium laser

Toru Takagi, Akira Aoki, Shizuko Ichinose, Yoichi Taniguchi, Noriko Tachikawa, Takeshi Shinoki, Walter Meinzer, Anton Sculean, Yuichi Izumi
BACKGROUND: Recently, the occurrence of peri-implantitis has been increasing. However, a suitable method to debride the contaminated surface of titanium implants has not been established. The aim of this study was to investigate the morphological changes of the microstructured fixture surface after erbium laser irradiation, and to clarify the effects of the erbium lasers when used to remove calcified deposits from implant fixture surfaces. METHODS: In experiment 1, sandblasted, large grit, acid etched surface implants were treated with Er:YAG laser or Er,Cr:YSGG laser at 30-60 mJ/pulse and 20 Hz with water spray...
March 13, 2018: Journal of Periodontology
Romina Brignardello-Petersen
No abstract text is available yet for this article.
February 23, 2018: Journal of the American Dental Association
Adone Baroni
Xanthelasma palpebrarum is the most common type of xanthoma affecting the eyelids. It is characterized by asymptomatic soft yellowish macules, papules, or plaques over the upper and lower eyelids. Many treatments are available for management of xanthelasma palpebrarum, the most commonly used include surgical excision, ablative CO2 or erbium lasers, nonablative Q-switched Nd:YAG laser, trichloroacetic acid peeling, and radiofrequency ablation. This study aims to evaluate the effectiveness of RF ablation in the treatment of xanthelasma palpebrarum, with D...
March 1, 2018: Journal of Cosmetic Dermatology
Abbas Monzavi, Reza Fekrazad, Zahra Chinipardaz, Sima Shahabi, Roohollah Behruzi, Nasim Chiniforush
PURPOSE: This study aimed to investigate and compare temperature change during implant decontamination with different laser types (carbon dioxide [Co2]/diode/neodymium-doped yttrium aluminum garnet [Nd:YAG]/erbium-doped yttrium aluminum garnet [Er:YAG]/antimicrobial photodynamic therapy [aPDT]). MATERIAL AND METHODS: Sixty implants were inserted into a bone block cut from a sheep's mandible. A 3 × 8 mm vertical lesion was made at the buccal of each implant. The bone block was placed into a 37°C water bath to simulate the in vivo oral condition...
February 27, 2018: Implant Dentistry
A R Mothes, M Runnebaum, I B Runnebaum
PURPOSE: First evaluation of dual-phase vaginal Er:YAG laser to omit hormonal treatment for atrophy-related symptoms in post-menopausal breast cancer survivors following prolapse surgery. METHODS: Patients with a history of breast cancer at the time of surgery for pelvic organ prolapse were offered non-hormonal vaginal Er:YAG laser treatment when complaining of atrophy-related genitourinary syndrome of menopause. A single 10-min course of dual-phase protocol of pulsed Er:YAG laser (2940 nm, fractional ablative and thermal mode, fluence according to tissue thickness)...
February 27, 2018: Journal of Cancer Research and Clinical Oncology
Howyda M Ebrahim, Khaled Gharib
BACKGROUND: The accentuated nasolabial folds (NLFs) is the most pronounced sign of aging. Non-ablative erbium:yttrium aluminum garnet laser (ER:YAG), Smooth mode was used for the treatment of mucosal tissue. It was reported that it is effective in facial rejuvenation. AIM: To assess the safety and the effectiveness of intraoral ER:YAG Smooth mode laser in the treatment of NLFs wrinkle. MATERIALS AND METHODS: A total of 20 patients with different grades of NLFs wrinkle treated with 2940 nm Er:YAG laser intraorally...
February 26, 2018: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
Suchita, R Vijaya
In this work, we have studied the temporal coherence property of a four-wave mixing (FWM)-assisted continuous-wave erbium-doped fiber ring laser source. To understand the temporal coherence characteristics of FWM, we have analyzed the visibility of their interference pattern with the help of a Mach-Zehnder-based fiber interferometer. The visibility of FWM sidebands is compared with respect to the input pumps, with and without the cavity effect. The stand-alone FWM without any cavity effect has a visibility comparable to its input coherent pumps, while the FWM in the presence of the cavity effect has a poorer visibility due to the intra-cavity noise arising from the amplified spontaneous emission, which is not entirely annulled in broadband lasers...
February 10, 2018: Applied Optics
Ji Sun, Yue Zhou, Yitang Dai, Jianqiang Li, Feifei Yin, Jian Dai, Kun Xu
In this paper, we build a mode-locked all-polarization-maintaining figure-of-8 erbium-doped fiber oscillator based on a nonlinear amplifying loop mirror. The fiber oscillator can generate 1.6 ps chirped pulses that can be de-chirped to 500 fs at 1550 nm with a pulse energy of 0.8 nJ and a repetition rate of 12 MHz. It can be further amplified up to 10 nJ and compressed down to 100 fs with a pre-chirp managed nonlinear amplification setup. Such an oscillator and amplifier configuration has the advantages of self-starting and long-term operation, and it is highly suitable for subsequent frequency conversion, which is desirable for many applications in ultrafast microscopy and precision spectroscopy...
February 20, 2018: Applied Optics
Serkan Demirkan
Eccrine hidrocystomes (EH) are benign cystic tumors of dermal eccrine ducts. There is still no gold standard treatment option for EH because of the large number of lesions, the risk of cicatrization and the different treatment options offered. We offer combined oral isotretinoin and following erbium-yttrium aluminum garnet laser treatment as an alternative treatment option in difficult patients with EH.
February 22, 2018: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
D Quarato, M Pascali, F Carinci
Scars are a very common condition of the general population and can have a profound impact on the psyche of the patient such as low self-esteem and feelings of psychosocial isolation. Various therapeutic approaches have been proposed for improving the clinical appearance of scars. Fractional mode of ablative and non-ablative lasers has become a novel strategy for the treatment of scars. A total of 43 patients (Fitzpatrick skin type II to IV), clinically diagnosed of surgical and post-traumatic scars from January 2015 to December 2016, were treated...
January 2018: Journal of Biological Regulators and Homeostatic Agents
Yuval Hilerowicz, Eli Sprecher, Andrea Gat, Ofir Artzi
Schamberg's disease is one of the pigmented purpuric dermatoses (PPD). PPD encompass a large and heterogeneous group of dermatologic disorders featuring purpuric lesions often located on the lower limbs. The various forms of PPD are notoriously known to be resistant to treatment. Fractional photothermolysis has been described as a successful and safe method to induce dermal remodeling. We report three patients with Schamberg's disease who were successfully treated with 4 monthly sessions of fractional non-ablative 1540 nm erbium:glass laser, with resolution of their purpuric pigmented rash lasting up to 9 months after the last treatment session...
February 16, 2018: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
Ana Carina Junqueira Bertin, Adriana Vilarinho, Ana Lúcia Ariano Junqueira
Androgenetic alopecia, also known as male and female pattern hair loss, is a very prevalent condition; however, approved therapeutic options are limited. Fractionated laser has been proposed to assist in penetration of topical medications to the cutaneous tissue. We present four cases of androgenetic alopecia that underwent treatment with a non-ablative erbium glass fractional laser followed by the application of topical finasteride 0,05% and growth factors including basic fibroblast growth factor, insulin-like growth factor, vascular endothelial growth factor, and copper peptide 1%...
February 16, 2018: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
Shahenda A Ramez, Mona M Soliman, Maha Fadel, Faisal Nour El-Deen, Maha Nasr, Eman R Youness, Dalea M Aboel-Fadl
Psoriasis is a commonly encountered chronic dermatological disease, presenting with inflammatory symptoms in patients. Systemic treatment of psoriasis is associated with several adverse effects, therefore the development of a customized topical treatment modality for psoriasis would be an interesting alternative to systemic delivery. The therapeutic modality explored in this article was the comparative treatment of psoriatic patients using nanoparticulated methotrexate in the form of jojoba oil-based microemulsion with or without fractional erbium YAG laser...
February 15, 2018: Artificial Cells, Nanomedicine, and Biotechnology
M Gambacciani, M Levancini, E Russo, L Vacca, T Simoncini, M Cervigni
OBJECTIVES: To evaluate the long-term efficacy of a second generation of vaginal laser treatment, the vaginal erbium laser, as a non-ablative photothermal therapy for the management of genitourinary syndrome of menopause. METHODS: The study was performed using an erbium laser crystal yttrium-aluminum-garnet (XS Fotona Smooth™, Fotona, Ljubljana, Slovenia) with a wavelength of 2940 nm. Postmenopausal women (n = 205) were treated with three laser applications at 30-day intervals...
February 13, 2018: Climacteric: the Journal of the International Menopause Society
Evriklia Kourti, Ourania Pantelidou
Aim: This ex vivo study compared the efficiency of different irrigations systems to remove calcium hydroxide from root canal walls, especially from the apical third by using scanning electron microscopy (SEM). Materials and Methods: Eighty-four single-rooted teeth were divided into 4 groups of 20 teeth each, according to different irrigation protocols using a 30-gauge slot-tipped needle, ultrasonic irrigation system, erbium-doped yttrium aluminum garnet laser (Er: YAG) laser, and EndoVac system...
November 2017: Journal of Conservative Dentistry: JCD
Diao Li, Henri Jussila, Yadong Wang, Guohua Hu, Tom Albrow-Owen, Richard C T Howe, Zhaoyu Ren, Jintao Bai, Tawfique Hasan, Zhipei Sun
Ultrafast lasers with tunable parameters in wavelength and time domains are the choice of light source for various applications such as spectroscopy and communication. Here, we report a wavelength and pulse-duration tunable mode-locked Erbium doped fiber laser with single wall carbon nanotube-based saturable absorber. An intra-cavity tunable filter is employed to continuously tune the output wavelength for 34 nm (from 1525 nm to 1559 nm) and pulse duration from 545 fs to 6.1 ps, respectively. Our results provide a novel light source for various applications requiring variable wavelength or pulse duration...
February 9, 2018: Scientific Reports
Wen-Jun Liu, Mengliu Liu, Yuyi OuYang, Huanran Hou, Guoli Ma, Ming Lei, Zhiyi Wei
In this paper, the WSe2 film prepared by the CVD method is transferred on a tapered fiber, and the WSe2 saturable absorber (SA) is fabricated. In order to measure the third-order optical nonlinearity of WSe2, the Z-scan technique is applied. The modulation depth of the WSe2 SA is measured to be 21.89%. Taking advantage of the remarkable nonlinear absorption characteristic of the WSe2 SA, the mode-locked erbium-doped fiber laser is demonstrated at 1557.4 nm with the bandwidth of 25.8 nm and signal to noise ratio of 96 dB...
February 9, 2018: Nanotechnology
Wadih Nassif, Mohamad Rifai
AIM: The aim of this study was to characterize the surface of zirconia subjected to different treatments and evaluate its effect on cell adhesion and proliferation. MATERIALS AND METHODS: A total of 80 zirconia disks were divided into four groups (n = 20) according to the surface treatments used: group I: as-sintered (AS), no surface treatment applied; group II: abrasion treatment applied using Rocatec (ROC; 3M ESPE) system with silica-coated alumina powder of grit size 110 μm; group III: erbium, chromium:yttrium, scandium, gallium, garnet (Er, Cr:YSGG) laser (LAS; BIOLASE) was used at a frequency of 20 Hz and output power of 3 W; and group IV: specimens were subjected to the selective infiltration etching (SIE) technique...
February 1, 2018: Journal of Contemporary Dental Practice
K Karmisholt, A Haerskjold, T Karlsmark, J Waibel, U Paasch, M Haedersdal
The ability of laser treatment to affect wound healing and subsequently minimize scar formation has been investigated in recent years. However, no systematic review links these clinical trials. The aim of this study is to systematically review and evaluate clinical evidence for early laser intervention to reduce scar formation in studies where laser treatment were introduced less than 3 months after wounding. We searched PubMed using relevant key words in June 2017. Titles, abstracts and articles were sorted according to inclusion and exclusion criteria...
February 8, 2018: Journal of the European Academy of Dermatology and Venereology: JEADV
L C Gómez-Pavón, G J Lozano-Perera, A Luis-Ramos, J M Muñoz-Pacheco, J P Padilla-Martínez, P Zaca-Morán
In this work, the influence of induced losses on the saturable absorption by zinc nanoparticles photodeposited onto the core of an optical fiber end is reported. Samples with different losses were obtained by the photodeposition technique using a continuous wave laser at 1550 nm. The nonlinear absorption of the saturable absorber was characterized by the P-scan technique using a high-gain pulsed erbium-doped fiber amplifier. The results have demonstrated that for optical fibers with variable induced losses by deposited nanoparticles, the modulation depth increases proportionally based on the nonlinear absorption coefficient...
January 22, 2018: Optics Express
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