Hard tooth tissue removal efficiency by single-mode low energy Er:YAG laser

2010 ◽  
Author(s):  
A. V. Belikov ◽  
A. V. Skrypnik ◽  
K. V. Shatilova
Keyword(s):  
Removal Efficiency ◽  
Er:Yag Laser ◽  
Single Mode ◽  
Low Energy ◽  
Tissue Removal ◽  
Tooth Tissue

Computer monitoring of the thermal effects induced by Er:YAG laser radiation during preparation of the hard tooth tissue

1993 ◽  
Author(s):  
Tatjana Dostalova ◽  
Otakar Krejsa ◽  
Helena Jelinkova ◽  
Karel Hamal ◽  
Ivan Prochazka ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Thermal Effects ◽  
Er:Yag Laser ◽  
Computer Monitoring ◽  
Tooth Tissue

scholarly journals Removal Efficiency of Calcium Hydroxide Intracanal Medicament with Er:YAG Laser: A Scanning Electron Microscopic Study

2016 ◽  
Vol 6 (1) ◽  
pp. 24-30
Author(s):  
Evriklia Kourti ◽  
Ourania Pantelidou ◽  
Antonis Kallis
Keyword(s):  
Calcium Hydroxide ◽  
Microscopic Study ◽  
Removal Efficiency ◽  
Er:Yag Laser ◽  
Control Groups ◽  
Electron Microscopic ◽  
Scanning Electron Microscopic Study ◽  
Scanning Electron Microscopic ◽  
Ultrasonic Irrigation ◽  
Scanning Electron

ABSTRACT Aim This ex vivo study compared the efficiency of Er:YAG laser to remove calcium hydroxide from root canal walls, especially from the apical third, with manual and ultrasonic irrigation technique by using a scanning electron microscopic (SEM). Materials and methods Sixty-four single-rooted teeth were divided into 3 groups of 20 teeth each. The rest 4 teeth were used as control groups (2 positive and 2 negative control group). After coronal access, all teeth were instrumented by Protaper Next rotary files (Dentsply-Maillefer, Ballaigues, Switzerland) up to size F3, followed an irrigation protocol and filled with pure calcium hydroxide powder mixed with saline. Teeth were stored in an incubator for 7 days and then calcium hydroxide was removed using 3 techniques: Manually (group I), by ultrasonic irrigation (group II), by laser Er:YAG and x-pulse tip (group III). The teeth of control groups were instrumented as the experimental groups; no removal technique was applied in positive group, whereas in negative one, the root canals were left empty. Teeth were sectioned longitudinally and observed under SEM. Results were statistically analyzed with the Kruskal–Wallis test and Mann–Whitney test. Results The results showed significant difference between laser and the other two groups in coronal and middle root third, but no statistic difference in apical third. Conclusion Laser improved the removal of calcium hydroxide in comparison with conventional techniques. How to cite this article Kourti E, Pantelidou O, Kallis A. Removal Efficiency of Calcium Hydroxide Intracanal Medicament with Er:YAG Laser: A Scanning Electron Microscopic Study. Int J Laser Dent 2016;6(1):24-30.

scholarly journals The use of Er:YAG Laser for dental caries removal

2021 ◽  
Vol 8 (3) ◽  
pp. 173-183
Author(s):  
Geise dos Santos Marcelino ◽  
◽  
Jose Humberto Ribeiro Lopes ◽  
Juliana Jendiroba Faraoni ◽  
Pamella Coelho Dias ◽  
...  
Keyword(s):  
Dental Caries ◽  
Dental Treatment ◽  
Er:Yag Laser ◽  
Data Extraction ◽  
Erbium Laser ◽  
Manual Search ◽  
Study Selection ◽  
Tissue Removal ◽  
Selective Ablation ◽  
Caries Removal

Background Carious tissue removal in enamel and dentin requires the use of sharp and resistant instruments. New tools have appeared to optimize/facilitate dental treatment, among them the laser. Regarding laser application for dental caries removal, the use of erbium laser doped with yttrium, aluminum, and garnet (Er:YAG) stands out. The Er:YAG laser is excellent for hard tissues ablation since its wavelength of 2.940nm is highly absorbed by water and hydroxyapatite. Objective To review the application of the Er:YAG laser in dental caries removal, to present its advantages and limitations in clinical practice, as well as to describe its action mechanism, and to compare its effectiveness with different methods used to remove caries. Data sources The search for articles to compose this literature review was carried out in the PubMed and Embase databases. Study selection Articles in English published between 2006 and 2021. The manual search included additional articles and books; a total of 39 references were selected. Data extraction Information from studies that evaluated the use of the Er:YAG laser to remove caries or related this type of laser to other methods. Articles that evaluated characteristics of the dental structure, or the influence of restorative materials after caries removal with the Er:YAG laser, were also considered. Study selection Based on studies results, the Er:YAG laser presents itself as an alternative for caries removal since it can remove demineralized tissue (selective ablation) without causing damage to the dental element.

CERAMIC LAMINATE VENEERS: A 3-YEAR CLINICAL FOLLOW-UP

2021 ◽  
Vol 7 (5) ◽  
Author(s):  
Celso Afonso Klein -Junior ◽  
Roberto Zimmer ◽  
Tatiele Filipin Venturini ◽  
Gabriel Dias de Castro ◽  
Fábio Herrmann Coelho -de -Souza ◽  
...  
Keyword(s):  
Treatment Protocol ◽  
Standard Technique ◽  
Color Stability ◽  
Adhesive System ◽  
Long Term Stability ◽  
Tissue Removal ◽  
Tooth Tissue ◽  
Laminate Veneers

Ceramic laminate veneers have been widely used in esthetic restorations, with advantages such as color stability, resistance to degradation, and excellent esthetic results, all of which contribute to long-term stability. The gold standard technique consists of bonding a thin ceramic laminate veneer to enamel. The present paper describes a clinical case with 3-year follow-up. Six ceramic laminate veneers were planned, fabricated and bonded to six sound anterior maxillary teeth showing diastema, thereby improving shape and size. The procedure followed a laminate veneer treatment protocol, using a mock-up, shade selection, and an adhesive system. The case was followed for 3 years. In conclusion, minimally invasive restorations with ceramic laminate veneers remained stable after 3 years of follow-up and are a good option for patients with diastema or microdontia and requires only a minimum amount of sound tooth tissue removal.

Hard tooth tissue removal by short and long Er:YAG or Er,Cr:YSGG mid-infrared laser radiation

Laser Physics ◽  
2016 ◽  
Vol 27 (2) ◽  
pp. 026002
Author(s):  
H Jelínková ◽  
T Dostálová ◽  
M Remeš ◽  
J Šulc ◽  
M Němec ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Infrared Laser ◽  
Mid Infrared ◽  
Tissue Removal ◽  
Tooth Tissue

scholarly journals Simultaneous Perio-endo Surgery with ER:YAG Laser and Bone Xenograft. A Case Report

Folia Medica ◽  
2020 ◽  
Vol 62 (3) ◽  
pp. 631-637
Author(s):  
Bogdan Krastev ◽  
Ivan Filipov
Keyword(s):  
Case Report ◽  
Er:Yag Laser ◽  
Yttrium Aluminium Garnet ◽  
Periapical Lesion ◽  
Tissue Removal ◽  
Simultaneous Surgery ◽  
Erbium Doped ◽  
Periapical Granuloma ◽  
Cystic Cavity ◽  
End Resection

Periodontally affected teeth with periapical lesion indicated for periapical surgery have a poor prognosis. Using Er:YAG lasers to perform simultaneous surgery on both defects may increase their survival rate. Preparing a retrograde cavity on affected teeth and obturating it is still a matter of debate among clinicians. The purpose of this case report was to describe the simultaneous use of Erbium-doped Yttrium Aluminium Garnet Er:YAG (2,940 nm) laser in the treatment of periapical granuloma and infraossal defect and the achieved results. The Er:YAG laser was used to perform flap dissection, granulation tissue removal, osteotomy and root-end resection except for initial flap incision and reflection. The cystic cavity was filled with Bio-Oss Collagen® xenograft. Results were followed up for 18 months with the help of radiographic orthopantomographic images. The outcome of this clinical case indicates that the use of Er:YAG laser could be considered a suitable method to perform simultaneous periodontal and endodontic surgery.

scholarly journals DYNAMICAL BEHAVIOR OF A SQUID RING COUPLED TO A QUANTIZED ELECTROMAGNETIC FIELD

2003 ◽  
Vol 17 (04n06) ◽  
pp. 709-715 ◽  
Author(s):  
R. MIGLIORE ◽  
A. MESSINA
Keyword(s):  
Electromagnetic Field ◽  
Dynamical Behavior ◽  
Single Mode ◽  
Energy Difference ◽  
Low Energy ◽  
Field Energy ◽  
Quantum Mechanical ◽  
Stationary States ◽  
Field System ◽  
Quantized Electromagnetic Field

In this paper we investigate the dynamical behavior of a SQUID ring coupled to a quantized single-mode electromagnetic field. We have calculated the eigenstates of the combined fully quantum mechanical SQUID-field system. Interesting phenomena occur when the energy difference between the usual symmetric and anti-symmetric SQUID states equals the field energy ℏωF. We find the low-energy lying entangled stationary states of the system and demonstrate that its dynamics is dominated by coherent Rabi oscillations.

scholarly journals Influence of Low-Level Laser Modification and Adhesive Application Mode on the Bonding Efficiency of Universal Adhesives to Er:YAG Laser-Ablated Dentin

2021 ◽  
Vol 12 ◽  
pp. e7-e7
Author(s):  
Nesrine A. Elsahn ◽  
Hatem M. El-Damanhoury ◽  
Dina W Elkassas
Keyword(s):  
Er:Yag Laser ◽  
High Energy ◽  
Low Energy ◽  
Universal Adhesive ◽  
Laser Modification ◽  
Low Level ◽  
Etch And Rinse ◽  
Universal Adhesives ◽  
Energy Laser ◽  
Low Energy Laser

Introduction: Erbium laser ablation as a method of tooth preparation and conditioning has shown promising results. Although previous studies have adopted various combinations of different laser parameters and several dentin adhesive systems, very few have investigated combining high-level and low-level ER:YAG lasers with Universal adhesives. This study aimed to assess the impact of using low-energy irradiation on the surface micro-topography and shear bond strength (SBS) of universal adhesive (UA) to the erbium:yttrium-aluminum-garnet (Er:YAG) laser-ablated dentin substrate, bonded in etch-and-rinse or self-etch adhesive mode. Methods: Eighty-seven extracted molars were sectioned to expose flat occlusal dentin surface; 60 teeth were divided equally into three groups according to the surface treatment; bur-cutting (B), Er:YAG high-energy laser cutting (L1 - 200 mJ, 20 Hz, 50 μs pulse), or L1 followed by low-energy laser modification (L1 /L2 - 80 mJ, 10 Hz, 50 μs pulse). Then each group was equally divided into two groups (n=10) according to the mode of application of the universal adhesive; either etch-and-rinse (ER) or self-etching (SE). The samples were subjected to thermocycling (5000 cycle between 5°C and 55°C), and SBS was tested. Two-way ANOVA and Tukey post hoc test were used to analyze the results. The remaining 27 samples were used to investigate the effect of the treatment on the topography of the treated dentin surfaces using a scanning electron microscope (SEM). Results: B/SE recorded the highest SBS (25.48 ± 2.6 MPa) followed by B/ER (23.20 ± 6.8 MPa) and L1 /L2 /SE (22.94 ± 4.1 MPa) and with no statistically significant difference between these groups (P >0.05). The lowest SBS results (P<0.05) were recorded for L1/SE (12.22 ± 3 MPa). No statistical differences were found between the SBS of L1 /L2 /ER and L1 /ER groups or between the SBS of L1 /L2 / ER and L1 /L2 /SE groups. Conclusion: A subsequent treatment of the Er:YAG laser-ablated dentin with low-energy laser modification mode (LMM) enhances the SBS of the tested UA when applied in SE mode.

scholarly journals Decontamination of Dental Implant Surfaces by the Er:YAG Laser Beam: A Comparative in Vitro Study of Various Protocols

2018 ◽  
Vol 6 (4) ◽  
pp. 66 ◽  
Author(s):  
Rima Nejem Wakim ◽  
Melanie Namour ◽  
Hoang Nguyen ◽  
Andre Peremans ◽  
Toni Zeinoun ◽  
...  
Keyword(s):  
Dental Implant ◽  
Er:Yag Laser ◽  
In Vitro Study ◽  
Low Energy ◽  
Vitro Study ◽  
Water Spray ◽  
Implant Surface ◽  
Dental Implant Surface ◽  
Irradiation Energy

Oral rehabilitation with dental implants has revolutionized the field of dentistry and has been proven to be an effective procedure. However, the incidence of peri-implantitis has become an emerging concern. The efficacy of the decontamination of the implant surface, by means of lasers, is still controversial. Previous studies have revealed a reduction in osteoblast adhesion to carbon-contaminated implant surfaces. This in-vitro study aimed to evaluate the decontamination of failed implants by assessing the carbon proportion, after irradiation by low-energy erbium yttrium-aluminum-garnet laser (Er:YAG) (Fotona; 2940 nm, Ljubljana, Slovenia) for a single and for multiple passages, until getting a surface, free of organic matters; to find the appropriate procedure for dental-implant surface-decontamination. Ninety implants were used. Thirty sterile implants were kept as a negative control. Thirty failed implants were irradiated by the Er:YAG laser, for a single passage, and the other thirty, for multiple passages. The parameters used in our experiments were an irradiation energy of 50 mJ, frequency of 30 Hz, and an energy density of 3.76 J/cm2. A sapphire tip, with a length of 8 mm, was used with concomitant water spray irrigation, under air 6 and water spray 4. Super short pulse mode (SSP) was of 50 μs; irradiation speed being 2 mm/s. We used energy-dispersive X-ray spectroscopy (EDX) to evaluate the carbon proportion on the surfaces of the sterile implants, the contaminated, and the lased implants, with one (LX1) and with three passages (LX3). Statistical analysis was performed by ANOVA. Results showed mean difference between the three groups (contaminated, LX1, and LX3) with p < 0.0001, as between LX1 and Group A (p < 0.0001), while the difference between LX3 and the control group was not statistically significant. The decontamination of the implant surfaces with a low-energy Er:YAG laser with three passages, appeared to be an encouraging approach.

Dental Treatment with Laser Beam -Monitoring Enabling Safe Hard-Tooth-Tissue Removal-

2009 ◽  
Vol 3 (5) ◽  
pp. 494-501 ◽  
Author(s):  
Keiji Yamada ◽  
◽  
Takashi Ueda ◽  
Akira Hosokawa ◽  
Tatsuaki Furumoto ◽  
...  
Keyword(s):  
Dental Treatment ◽  
Sound Level ◽  
Dental Tissue ◽  
Hard Dental Tissue ◽  
Tissue Removal ◽  
Beam Monitoring ◽  
The Relationship ◽  
Tooth Tissue ◽  
Level Monitoring ◽  
Color Pyrometer

With laser-based dental treatment coming into increasing use, we introduce in-process monitoring using a two-color pyrometer and spectroscopic measurement ensuring safe treatment. Sound level monitoring is proposed for detecting hard-dental-tissue removal based on the relationship between tissue removal and sound.

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