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https://www.readbyqxmd.com/read/28090034/evaluation-of-sub-surface-penetration-and-bonding-durability-of-self-etching-primer-systems-to-er-yag-laser-treated-cervical-dentin
#1
Zhengdi He, Lingling Chen, Yasushi Shimada, Junji Tagami, Shuangchen Ruan
This study aimed to investigate self-etching bonding systems penetrating in sub-surface dentin layer after Er:YAG laser irradiation and micro-shear bonding durability over a period of 1 year. Dentin slices obtained from extracted human third molars were prepared. Two self-etching adhesive systems were evaluated: Clearfil SE Bond and Clearfil Tri-S Bond. Specimens were tested for micro-shear bond strength with one of the following treatments: Er:YAG laser irradiation and 600-grit silicon paper polishing at 24 h, 7 days, 6 months and 1 year...
January 13, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28076457/removal-of-calcium-hydroxide-from-weine-type-ii-systems-using-photon-induced-photoacoustic-streaming-passive-ultrasonic-and-needle-irrigation-a-microcomputed-tomography-study
#2
Adam Lloyd, Geraldine Navarrete, Melissa Andreia Marchesan, David Clement
Objective: This study compared the effectiveness of Er:YAG laser-activated irrigation (PIPS), passive ultrasonic irrigation (PUI) with EndoUltra and standard needle irrigation (SNI) in the removal of calcium hydroxide [Ca(OH)2] from the mesial roots of Weine Type II mandibular molars. Material and Methods: Thirty mandibular molars were screened by µCT for the presence of mesial roots with complex intra-canal anatomy and a common apical foramen. The teeth were enlarged to a standardized 25/...
November 2016: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28068190/er-yag-laser-irradiation-induces-behavioral-changes-in-v-harveyi
#3
Idan Redenski, Sharonit Sahar-Helft, Adam Stabholz, Doron Steinberg
OBJECTIVES: Laser technologies have many different applications in medical, agricultural, and industrial fields. Studies have shown several effects of laser energy on different bacterial species, in a wide variety of settings. Recent reports have found that one of the unique features of bacteria is their ability to communicate among themselves (quorum sensing). We sought to investigate whether low-energy laser irradiation affects bacterial behavior, which is regulated by quorum sensing...
January 9, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28068189/intrapulpal-temperature-increase-during-er-yag-laser-aided-debonding-of-ceramic-brackets
#4
Hilal Yilanci, Zeynep Beyza Yildirim, Sabri Ilhan Ramoglu
OBJECTIVE: The purpose of this study was to evaluate the temperature changes in the pulp chamber while using a newly introduced application of Er:YAG laser to debond ceramic brackets in a study model with a pulpal circulation with and without thermocycled samples. BACKGROUND DATA: An esthetic alternative to stainless steel brackets, ceramic brackets have been proposed. However, because of their low fracture resistance and high bond strengths, ceramic brackets can cause a problem when they are being removed using conventional techniques...
January 9, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28061356/clinical-differences-in-autofluorescence-between-viable-and-nonvital-bone-a-case-report-with-histopathologic-evaluation-performed-on-medication-related-osteonecrosis-of-the-jaws
#5
Ilaria Giovannacci, Marco Meleti, Domenico Corradi, Paolo Vescovi
Medication-related osteonecrosis of the jaws (MRONJ) is an adverse side effect of several drug therapies, including bisphosphonates (BPs). Osteonecrosis of the jaw specifically related to BP therapy is usually referred to using the acronym BRONJ. However, no consensus has yet been reached regarding the most appropriate management of BRONJ. The greatest success rates have been recorded with surgical removal of necrotic bone. In particular, erbium:yttrium-aluminum-garnet (Er:YAG) laser-assisted surgery has shown significantly better results than conventional surgical approaches...
December 15, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28054260/effect-of-er-yag-laser-on-dentin-demineralization-around-restorations
#6
Michelle Alexandra Chinelatti, Cristiane Tomaz Rocha, Vivian Colucci, Mônica Campos Serra, Antonio Luiz Rodrigues-Júnior, Silmara Aparecida Milori Corona
The aim of this study was to evaluate the effect of cavity preparation with Er:YAG laser on dentin adjacent to restorations submitted to cariogenic challenge in situ, by subsuperficial microhardness analysis. Bovine incisors were sectioned, flattened, and polished, resulting in 40 dentin slabs. The slabs were randomly assigned to four groups (n = 10), according to the cavity preparation method: I-high-speed handpiece (control); II-Er:YAG laser (160 mJ; 3 Hz); III-Er:YAG laser (260 mJ; 3 Hz); IV-Er:YAG laser (300 mJ; 3Hz)...
January 4, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28028971/assessment-of-pain-when-uncovering-implants-with-er-yag-laser-or-scalpel-for-second-stage-surgery
#7
Jacek Matys, Marzena Dominiak
BACKGROUND: Different methods aimed at decreasing pain during some soft tissue procedures in dentistry are still under research. Modern devices as lasers could be a method to reduce the pain and duration of second stage implant surgery. OBJECTIVES: To assess the pain and the impression quality when uncovering implants with a laser and with a scalpel. MATERIAL AND METHODS: The analysis included 60 implants (Dentium SuperLine, Suwon, Korea) in 30 patients (23 women and 7 men) aged 25-69...
November 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28025444/histological-evaluation-of-three-techniques-for-caries-removal
#8
Etienne Medioni, Jean-Paul Rocca, Carlo Fornaini, Elisabetta Merigo
A number of concepts and devices have been proposed for caries removal. Among these, the Er:YAG laser is a potential alternative to conventional mechanical treatment. This study compared the effectiveness of the Er:YAG laser with that of low-speed rotary instruments for removal of carious tissue in 26 extracted human molars and premolars with severe decay (i.e., large occlusal or proximal decay but no pulpal contact). The teeth were divided into three groups of eight teeth, and two teeth were used as controls...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28009690/fractional-erbium-doped-yttrium-aluminum-garnet-laser-versus-microneedling-in-treatment-of-atrophic-acne-scars-a-randomized-split-face-clinical-study
#9
Mai Abdel Raouf Osman, Hisham Ali Shokeir, Marwa M Fawzy
BACKGROUND: Ablative fractional erbium-doped yttrium aluminum garnet (Er:YAG) laser and microneedling have been popularized in recent years and their effectiveness and side effects individually reported. No previous study, however, has directly compared the efficacy and safety between the 2 different treatments. OBJECTIVE: To compare the efficacy and safety of the ablative fractional Er:YAG laser and microneedling for the treatment of atrophic acne scars. MATERIALS AND METHODS: Thirty patients with atrophic acne scars were randomly treated in a split-face manner with a fractional Er:YAG laser on one side and microneedling on the other side...
January 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/27998364/bone-healing-following-different-types-of-osteotomy-scanning-electron-microscopy-sem-and-three-dimensional-sem-analyses
#10
Marko Blaskovic, Dragana Gabrić, Nichola J Coleman, Ian J Slipper, Mitko Mladenov, Elizabeta Gjorgievska
The aim of the present study was to compare dynamics of the bone healing process after different types of osteotomies. In total, 24 Wistar rats were subjected to different types of osteotomy performed with standard steel bur, piezosurgery, contact, and non-contact Erbium:yttrium-aluminum-garnet (Er:YAG) laser ablation. The animals were randomly divided into four groups, to be euthanized immediately after the procedure, or at 1, 2, or 3 weeks after surgery. The obtained bone samples were analyzed by scanning electron microscopy (SEM)...
December 2016: Microscopy and Microanalysis
https://www.readbyqxmd.com/read/27957502/assessment-of-temperature-rise-and-time-of-alveolar-ridge-splitting-by-means-of-er-yag-laser-piezosurgery-and-surgical-saw-an-ex-vivo-study
#11
Jacek Matys, Rafał Flieger, Marzena Dominiak
The most common adverse effect after bone cutting is a thermal damage. The aim of our study was to evaluate the bone temperature rise during an alveolar ridge splitting, rating the time needed to perform this procedure and the time to raise the temperature of a bone by 10°C, as well as to evaluate the bone carbonization occurrence. The research included 60 mandibles (n = 60) of adult pigs, divided into 4 groups (n = 15). Two vertical and one horizontal cut have been done in an alveolar ridge using Er:YAG laser with set power of 200 mJ (G1), 400 mJ (G2), piezosurgery unit (G3), and a saw (G4)...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27921170/effect-of-photon-initiated-photoacoustic-streaming-passive-ultrasonic-and-sonic-irrigation-techniques-on-dentinal-tubule-penetration-of-irrigation-solution-a-confocal-microscopic-study
#12
Merve Akcay, Hakan Arslan, Merve Mese, Nazlı Durmus, Ismail Davut Capar
OBJECTIVES: The aim of this in vitro study was to evaluate the efficacy of different irrigation techniques including laser-activated irrigation using an erbium:yttrium-aluminum-garnet (Er:YAG) laser with a novel tip design (photon-induced photoacoustic streaming (PIPS)), Er:YAG laser with Preciso tip, sonic activation, and passive ultrasonic activation on the final irrigation solution penetration into dentinal tubules by using a laser scanning confocal microscope. MATERIAL AND METHODS: In this study, 65 extracted single-rooted human mandibular premolars were instrumented up to size 40 and randomly divided into 5 groups (n = 13) based on the activation technique of the final irrigation solution as follows: conventional irrigation (control group), sonic activation, passive ultrasonic activation, Er:YAG-PIPS tip activation, and Er:YAG-Preciso tip activation...
December 5, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27918844/novel-method-for-facial-rejuvenation-using-er-yag-laser-equipped-with-a-spatially-modulated-ablation-module-an-open-prospective-uncontrolled-cohort-study
#13
N V Volkova, L K Glazkova, V V Khomchenko, N S Sadick
Facial aging is a complex biological process that affects the skin and superficial musculoaponeurotic system (SMAS). A new technology (RecoSMA) for skin rejuvenation based on acoustic-interference method using Er:YAG laser (2936 nm) equipped with a special module SMA that targets both the dermis and SMAS was evaluated in an open-label prospective cohort study of 100 female patients treated for facial rejuvenation. Measure of clinical improvement included investigator-rated clinical photography using the Modified Fitzpatrick Wrinkle Scale, and ultrasound measurements in the dermis a week, 30 days and six months post treatment...
December 5, 2016: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/27893513/schneiderian-membrane-perforation-rate-and-increase-in-bone-temperature-during-maxillary-sinus-floor-elevation-by-means-of-er-yag-laser-an-animal-study-in-pigs
#14
Jacek Matys, Jakub Hadzik, Marzena Dominiak
PURPOSE: To assess the time of preparation, bone temperature increase, and the Schneiderian membrane perforation rate during maxillary sinus floor elevation. MATERIALS AND METHODS: The research included 30 maxillary sinuses (n = 30) of a pig, divided into 2 groups (n = 15). The lateral bony windows were created using Er:YAG laser (200 mJ, 15 Hz, energy density: 25.48 J/cm) and a diamond bur (control). The membrane was elevated using laser (50 mJ, 50 Hz) and hand instruments...
November 23, 2016: Implant Dentistry
https://www.readbyqxmd.com/read/27885522/efficacy-and-safety-of-fractional-co2-laser-versus-fractional-er-yag-laser-in-the-treatment-of-facial-skin-wrinkles
#15
Reza M Robati, Elmira Asadi
Ablative fractional lasers were introduced for treating facial rhytides. Few studies have compared fractional CO2 and Er:YAG lasers on cutaneous photodamages by a split trial. The aim of the present study was to compare these modalities in a randomized controlled double-blind split-face design with multiple sessions and larger sample size compared to previous studies done before. Forty patients with facial wrinkles were enrolled. Patients were randomly assigned to receive three monthly treatments on each side of the face, one with a fractional CO2 and one with a fractional Er:YAG laser...
November 24, 2016: Lasers in Medical Science
https://www.readbyqxmd.com/read/27849400/erbium-yttrium-aluminium-garnet-laser-versus-q-switched-neodymium-yttrium-aluminium-garnet-laser-for-the-treatment-of-xanthelesma-palpebrarum
#16
Ali Balevi, Pelin Ustuner, Mustafa Ozdemir
BACKGROUND: Several lasers have been used for the treatment of xanthelasma palpebrarum (XP), such as Q-switched Neodymium:Yttrium Aluminium Garnet (QSNd:YAG), Erbium:Yttrium Aluminium Garnet (Er:YAG) laser. However, there is no comparemental study among these laser options in the treatment of XP. OBJECTIVE: The aim of this study was to compare the clinical efficacy and response rates of QSNd:YAG and Er:YAG in the treatment of XP. METHODS: Sixty patients with a total of 102 XP lesions were randomly and equally divided into two groups...
November 16, 2016: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/27830151/the-effect-of-energy-densities-on-the-shear-bond-strength-of-self-adhering-flowable-composite-to-er-yag-pretreated-dentin
#17
Paul Nahas, Toni Zeinoun, Zeina Majzoub, Karim Corbani, Samir Nammour
Objective. To investigate the shear bond strength of self-adhering flowable resin composite, to dentin, after exposing it to Er:YAG laser radiation, at different energy densities. Materials and Methods. Sixty freshly extracted human third molars were randomly divided into five groups (n = 12). In the control group, dentin was left unirradiated, whereas, in the other four groups, dentin was irradiated with Er:YAG laser in noncontact mode (MSP mode = 100 µs; 10 Hz; beam diameter: 1.3 mm; speed of 1 mm/second; air 6 mL/min; and water 4 mL/min), and respectively, with the following level of energy (50 mJ, 60 mJ, 80 mJ, and 100 mJ)...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27818244/the-effect-of-pulse-duration-power-and-energy-of-fractional-er-yag-laser-for-transdermal-delivery-of-differently-sized-fitc-dextrans
#18
Barbara Zorec, Dejan Škrabelj, Marko Marinček, Damijan Miklavčič, Nataša Pavšelj
We studied fractional Er:YAG laser to enhance transdermal drug delivery of compounds possessing different molecular weights: FITC-dextrans (or FD) with average molecular weights of 4, 10 and 20kDa. Vertical glass Franz diffusion cells were used to study molecular transport through dermatomed porcine skin and histological analysis of laser-treated skin was performed after treatment with different laser pulse protocols. We were comparing different pulse durations at constant or varying pulse energies. We found that the energy of the delivered pulses mostly dictates the size/depth of laser-created microchannels, while the duration of the pulses dictates the extent of thermally altered tissue...
January 10, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27805662/dual-comb-spectroscopy-for-rapid-characterization-of-complex-optical-properties-of-solids
#19
Akifumi Asahara, Akiko Nishiyama, Satoru Yoshida, Ken-Ichi Kondo, Yoshiaki Nakajima, Kaoru Minoshima
We demonstrate rapid characterization of complex optical properties of solids via dual-comb spectroscopy (DCS) in the near-infrared region. The fine spectral structures in the complex refractive index of an Er:YAG are successfully deduced using the developed system and Fourier analysis. Moreover, simultaneous determination of the refractive index and the thickness is demonstrated for a silicon semiconductor wafer through the use of multireflected echo signals. The results indicate the potential of DCS as a powerful measurement tool for the rapid and full characterization of solid materials...
November 1, 2016: Optics Letters
https://www.readbyqxmd.com/read/27805273/comparison-between-er-yag-laser-and-bipolar-radiofrequency-combined-with-infrared-diode-laser-for-the-treatment-of-acne-scars-differential-expression-of-fibrogenetic-biomolecules-may-be-associated-with-differences-in-efficacy-between-ablative-and-non-ablative
#20
Seonguk Min, Seon Yong Park, Jungyoon Moon, Hyuck Hoon Kwon, Ji Young Yoon, Dae Hun Suh
BACKGROUND AND OBJECTIVE: Fractional Er:YAG minimizes the risk associated with skin ablation. Infrared diode laser and radiofrequency have suggested comparable improvements in acne scar. We compared the clinical efficacy of Er:YAG laser and bipolar radiofrequency combined with diode laser (BRDL) for the treatment of acne scars. Moreover, acute molecular changes of cytokine profile associated with wound healing have been evaluated to suggest mechanisms of improvement of acne scar. STUDY DESIGN: Twenty-four subjects with mild-to-moderate acne scars were treated in a split-face manner with Er:YAG and BRDL, with two treatment sessions, 4 weeks apart...
November 2, 2016: Lasers in Surgery and Medicine
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