Iraqi journal of laser最新文献

Intraoral Repair of Dental Ceramics Using Er,Cr:YSGG Laser: Review 使用 Er,Cr:YSGG 激光修复口内牙科陶瓷：综述

Iraqi journal of laser Pub Date : 2023-12-15 DOI: 10.31900/ijl.v22i2.382

Noor Bader Hassan, Basima Mohammed Ali Hussein*

{"title":"Intraoral Repair of Dental Ceramics Using Er,Cr:YSGG Laser: Review","authors":"Noor Bader Hassan, Basima Mohammed Ali Hussein*","doi":"10.31900/ijl.v22i2.382","DOIUrl":"https://doi.org/10.31900/ijl.v22i2.382","url":null,"abstract":"Introduction: All-ceramic crowns are widely used in prosthodontics and cosmetic dentistry due to their good esthetic and proper physical properties. Chipping of ceramic is one of the most common post-insertion complications, that can be fixed either extraoral or intraorally. The latter is time time-effective alternative, less traumatic, and low-cost. A newer objective method of laser is a surface modification of ceramics to increase surface roughness. The aim of this study is to provide a review of Er,Cr;YSGG (2960nm) in intraoral repair and shear bond strength (SBS). Method: A thorough search considering Google Scholar and PubMed published data and ten articles found who published between 2018 to 2022. Results:Because of the variation in the material composition of all ceramic crowns (feldspathic porcelain, zirconia, lithium dislocate, hybrid ceramics) different surface treatment methods are required for strong composite ceramic interphase. The effect of Er,Cr:YSGG on porcelain was minimal and lower than hydrofluoric acid, while for zirconia surface can be acceptable compared to no treatment. Conclusion: intraoral repair is an effective and cost-effective treatment that does not require multiple appointments. However, the success and durability of the restoration are dependent on technical and clinical experience and a superior understanding of material composition.\u0000Keywords: Intraoral repair, dental ceramics, ceramic chipping, Er,Cr:YSGG laser and shear bond strength (SBS).","PeriodicalId":500031,"journal":{"name":"Iraqi journal of laser","volume":"26 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138998737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of Dual Diode Laser: (810,980) nm in Acceleration of Orthodontic Tooth Movement:A Case Report 双二极管激光器：（810,980）纳米在加速正畸牙齿移动中的效果：病例报告

Iraqi journal of laser Pub Date : 2023-12-15 DOI: 10.31900/ijl.v22i2.387

Aya A. Assi*, Rawaa A. Faris, Balsam saadi Abdulhameed, Sarmad S. Almalki

{"title":"The Effect of Dual Diode Laser: (810,980) nm in Acceleration of Orthodontic Tooth Movement:A Case Report","authors":"Aya A. Assi*, Rawaa A. Faris, Balsam saadi Abdulhameed, Sarmad S. Almalki","doi":"10.31900/ijl.v22i2.387","DOIUrl":"https://doi.org/10.31900/ijl.v22i2.387","url":null,"abstract":"Patients are very concerned about the lengthy nature of orthodontic treatment. It is necessary to find a non-invasive way to quicken physiologic tooth movement. This study's objective was to assess the effectiveness of low-intensity laser therapy in shortening the time and discomfort of orthodontic treatment. Experimental work: Using a split-mouth study to compare tooth movement with conventional treatment and laser-accelerated orthodontic tooth movement. A patient presenting with a class II division I malocclusion characterized by the misalignment of the upper and lower teeth as classified by Angle’s molar classification system was indicated to undergo fixed orthodontic appliance orthodontic treatment. The treatment plan involved bilateral extraction of the upper first premolar teeth on both sides and distalization of the anterior segment to close the created space. For an experimental investigation, a patient was chosen at random and given right-side radiation using a dual diode laser (810,980 nm wavelength, 100 mW output power). Results: The tooth movement was measured over a period of 15 weeks; the first three orthodontic activations on the study side included scheduled laser treatment (the first month, laser-assisted treatment on days (0,3,7, and 14), the following two months, on days (0 and 14) from the day of orthodontic activation, and another 3 months of follow-up only); it was observed that orthodontic tooth movement was significantly higher in the study side than in the control side, as measured clinically using a digital vernier. We also noticed a considerable decrease in pain levels following a visual analog test. Conclusion: LLLT might clinically considerably speed orthodontic tooth movement and greatly lessen discomfort using the parameter settings employed in this investigation.","PeriodicalId":500031,"journal":{"name":"Iraqi journal of laser","volume":"2 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138999864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photocatalytic Performance of AgNPs-Zeolite Composite by Hydrothermal Synthesis for Water Splitting 水热法合成的 AgNPs-沸石复合材料在水分离中的光催化性能

Iraqi journal of laser Pub Date : 2023-12-15 DOI: 10.31900/ijl.v22i2.389

Rua’a F. Ahmed*, Mohamed K. Dhahir

引用次数: 0

In vitro Investigation the Antifungal and 940 nm Diode Laser Effects on Inhibition of Candida Albicans Isolated from Oral Cavity 体外研究抗真菌和 940 纳米二极管激光对口腔中分离出的白色念珠菌的抑制作用

Iraqi journal of laser Pub Date : 2023-12-15 DOI: 10.31900/ijl.v22i2.392

Roaa Osamah Adnan*, Hussein Ali Jawad

{"title":"In vitro Investigation the Antifungal and 940 nm Diode Laser Effects on Inhibition of Candida Albicans Isolated from Oral Cavity","authors":"Roaa Osamah Adnan*, Hussein Ali Jawad","doi":"10.31900/ijl.v22i2.392","DOIUrl":"https://doi.org/10.31900/ijl.v22i2.392","url":null,"abstract":"Background: Candida albicans is a prevalent commensal that can cause severe health problems in humans. One such condition that frequently returns after treatment is oral candidiasis. Aim: the goal of this research is to evaluate the efficiency of 940 nm as a fungicidal on the growth of Candida albicans in vitro. Material and Methods: In vitro samples (fungal swabs) were taken from the oral cavity of 75 patients suffering from oral thrush. Following the process of isolating and identifying Albicans. The samples are divided into four groups:(Group 1): Suspension of C. albicans was put in a solution of saline as a control group. (Group 2): Suspension of C. albicans that had been treated with nystatin. (Group 3): Suspension of C. albicans was irradiated by diode laser 940 nm at 1 W for 300 seconds in continuous mode. (Group 4): C. albicans suspension was irradiated by laser in a combination of nystatin. ANOVA, Dunnett t, and LSD tests were used to examine the data. A highly significant statistical variation in the count of C. Albicans before and after therapy. Results: The result of this study, finds that the reduction in the CFU/ml in group 4 (laser+nystatin) is highly significant and diode laser has a fungicidal effect on the growth of candida albicans. Conclusion: using a 940 nm diode laser (continuous mode) in a combination of antifungal (nystatin) acts as a fungicidal effect on Candida albicans.","PeriodicalId":500031,"journal":{"name":"Iraqi journal of laser","volume":"115 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138997524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Reliability of Two Different Laser Wavelengths in Inducing Bone Healing Around Dental Implants: Comparative Clinical Trial 两种不同波长的激光在诱导种植牙周围骨愈合方面的可靠性：比较临床试验

Iraqi journal of laser Pub Date : 2023-12-15 DOI: 10.31900/ijl.v22i2.398

Zahraa A. Alameeri*, Hussein A. Jawad

{"title":"The Reliability of Two Different Laser Wavelengths in Inducing Bone Healing Around Dental Implants: Comparative Clinical Trial","authors":"Zahraa A. Alameeri*, Hussein A. Jawad","doi":"10.31900/ijl.v22i2.398","DOIUrl":"https://doi.org/10.31900/ijl.v22i2.398","url":null,"abstract":"Background/purpose: Dental implantology involves different treatments that have been used in conjunction with dental implant surgery to increase implant stability and bone regeneration process. Photobiomodulation( PBM) can be one of these techniques. The objective of this study was to evaluate the bone density around implants. Materials and methods: in this study, 10 individuals had 20 implants inserted in the posterior of their mandibles. each patient received two implants the left side served as the control whereas the right side served as the study group with a diode laser (same patients). measurements were made for each implant. Measurements were obtained using cone-beam computed tomography (CBCT). Results: Cone beam computed tomography (CBCT) analysis found statistically significant quotient differences between the study groups were discovered. (P = <0.001) had a better degree of bone integration than the control group after 3 months of observation of different powers the best power effect on bone density around the implant from group 1 is 50 mW while the best power in bone density around the implant from group 2 is 4 W Conclusion: Effective osteogenesis promotion by photobiomodulation is possible; the bone healing process was accelerated around implants by different powers of 650nm and 976nm of the laser's photobiomodulation action.","PeriodicalId":500031,"journal":{"name":"Iraqi journal of laser","volume":"7 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138997994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Silver Nanoflowers as an Interfacial Liquid-State Surface Enhanced Raman Spectroscopy (SERS) Sensor for Water Pollution 银纳米流作为水污染的界面液态表面增强拉曼光谱 (SERS) 传感器

Iraqi journal of laser Pub Date : 2023-12-15 DOI: 10.31900/ijl.v22i2.405

Zinah Salahuddin Shakir*, Ayad Abdul Razzak Dhaigham, Sameer Khudhur Yaseen

{"title":"Silver Nanoflowers as an Interfacial Liquid-State Surface Enhanced Raman Spectroscopy (SERS) Sensor for Water Pollution","authors":"Zinah Salahuddin Shakir*, Ayad Abdul Razzak Dhaigham, Sameer Khudhur Yaseen","doi":"10.31900/ijl.v22i2.405","DOIUrl":"https://doi.org/10.31900/ijl.v22i2.405","url":null,"abstract":"Water pollution has created a critical threat to the environment.‎‎ A lot of research has been done ‎recently to use surface-enhanced Raman spectroscopy (SERS) to detect multiple pollutants in water. This study aims to use Ag colloid nanoflowers as liquid SERS enhancer. Tri sodium phosphate (Na3PO4) was investigated as a pollutant using liquid SERS ‎based on colloidal Ag ‎nanoflowers. The chemical method was used to synthesize nanoflowers from silver ‎ions. Atomic Force Microscope (AFM), Scanning Electron Microscope (SEM), and X-ray diffractometer (XRD) were employed to characterize the silver nanoflowers. This ‎nanoflowers SERS action in detecting Na3PO4 was reported and analyzed concerning both shape and size using a 532 ‎nm laser. We observed that the nanoflower's structure produced strong SERS signals. The increase in the SERS signal is related to ‎the deposition of Na3PO4 molecules in the aggregated silver nanostructure ‎in the solution. The concentration of Na3PO4 plays a main role in detection since the Raman ‎signal becomes stronger as the concentration increases. The highest phosphate analytical enhancement factor obtained for SERS in colloidal nanoflowers was 1.7×103 at 0.7×10-6 M which was the lowest concentration.","PeriodicalId":500031,"journal":{"name":"Iraqi journal of laser","volume":"35 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138996483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical Simulation of Metasurface Grating to Function as Polarization Modulator in Quantum Key Distribution Systems 在量子密钥分配系统中用作偏振调制器的元面光栅的数值模拟

Iraqi journal of laser Pub Date : 2023-12-15 DOI: 10.31900/ijl.v22i2.390

Ali Qader Baki*, Shelan Khasro Tawfeeq

{"title":"Numerical Simulation of Metasurface Grating to Function as Polarization Modulator in Quantum Key Distribution Systems","authors":"Ali Qader Baki*, Shelan Khasro Tawfeeq","doi":"10.31900/ijl.v22i2.390","DOIUrl":"https://doi.org/10.31900/ijl.v22i2.390","url":null,"abstract":"Polarization modulation plays an important role in polarization encoding in quantum key distribution. By using polarization modulation, quantum key distribution systems become more compact and more vulnerable as one laser source is used instead of using multiple laser sources that may cause side-channel attacks. Metasurfaces with their exceptional optical properties have led to the development of versatile ultrathin optical devices. They are made up of planar arrays of resonant or nearly resonant subwavelength pieces and provide complete control over reflected and transmitted electromagnetic waves opening several possibilities for the development of innovative optical components. In this work, the Si nanowire metasurface grating polarizer is designed by COMSOL Multiphysics Software to operate in the visible region and transmit the transverse magnetic polarization of light. The same structure can be rotated by different angles, i.e., 90o, 45o, and -45o to mimic the function of polarization modulation in quantum key distribution systems. The designed structure has an extinction ratio of ~ 60000 and a wide angular tolerance range of (-20o - 20o).","PeriodicalId":500031,"journal":{"name":"Iraqi journal of laser","volume":"152 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138998156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

D-shape Optical Fiber Development and Enhancement as a Refractive Indices Sensor Using Surface Plasmon Resonance 利用表面等离子体共振开发和增强 D 型光纤，使其成为折射率传感器

Iraqi journal of laser Pub Date : 2023-12-15 DOI: 10.31900/ijl.v22i2.401

Hiba Kh. Abbas*, Zainab F. Mahdi

{"title":"D-shape Optical Fiber Development and Enhancement as a Refractive Indices Sensor Using Surface Plasmon Resonance","authors":"Hiba Kh. Abbas*, Zainab F. Mahdi","doi":"10.31900/ijl.v22i2.401","DOIUrl":"https://doi.org/10.31900/ijl.v22i2.401","url":null,"abstract":"This article showcases the development and utilization of a side-polished fiber optic sensor that can identify altered refractive index levels within a glucose solution through the investigation of the surface Plasmon resonance (SPR) effect. The aim was to enhance efficiency by means of the placement of a 50 nm-thick layer of gold at the D-shape fiber sensing area. The detector was fabricated by utilizing a silica optical fiber (SOF), which underwent a cladding stripping process that resulted in three distinct lengths, followed by a polishing method to remove a portion of the fiber diameter and produce a cross-sectional D-shape. During experimentation with glucose solution, the side-polished fiber optic sensor revealed an adept detection sensitivity of 0.2015 au. /RIU. In order to improve sensitivity, a recent sensor was subjected to a coating process utilizing a thin film layer of gold (Au) measuring a thickness of 50 nm. The sensor was subsequently subjected to a series of tests utilizing the same glucose solutions as in previous experiments. A notable enhancement in sensitivity was observed when utilizing gold as the sensing material, with an equivalent maximum sensitivity of 3.101 au. /RIU.","PeriodicalId":500031,"journal":{"name":"Iraqi journal of laser","volume":"45 193","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138999324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study the Impact of Silica Nanoparticles on the Properties of Several Dyes for the Fabrication of a Random Laser Gain Medium 研究二氧化硅纳米颗粒对用于制造随机激光增益介质的几种染料特性的影响

Iraqi journal of laser Pub Date : 2023-12-15 DOI: 10.31900/ijl.v22i2.384

Noor Y. Khudair*, Mohammed K. Dhahir

引用次数: 0

Evaluation of Lithium Disilicate Surface Morphology Treated with Er,Cr:YSGG and Fractional CO2 Laser 评估经 Er,Cr:YSGG 和点阵 CO2 激光处理的二硅酸锂表面形态

Iraqi journal of laser Pub Date : 2023-12-15 DOI: 10.31900/ijl.v22i2.408

Noor Azad Mohammed*, Zainab F. Al-Bawi, Balsam saadi Abdulhameed

{"title":"Evaluation of Lithium Disilicate Surface Morphology Treated with Er,Cr:YSGG and Fractional CO2 Laser","authors":"Noor Azad Mohammed*, Zainab F. Al-Bawi, Balsam saadi Abdulhameed","doi":"10.31900/ijl.v22i2.408","DOIUrl":"https://doi.org/10.31900/ijl.v22i2.408","url":null,"abstract":"Abstract: The use of indirect, all-ceramic restorations has grown in popularity among dentists. Studies have demonstrated that for indirect ceramic restorations to be effective over time, cement and ceramic must be bonded in a stable manner. Chemical, mechanical, and laser irradiation are among the methods used to precondition ceramic surfaces in order to increase bond strength.The objective of the study: This study was performed to investigate the roughness values and surface topography of lithium disilicate glass-ceramic treated with conventional methods and different Er,Cr:YSGG, and fractional CO2 laser conditioning parameters.Material and methods: Sixty samples of lithium disilicate glass-ceramic were divided as follows: 1- (n = 10) untreated; 2- (n = 10) Hydrofluoric acid etched; 3- (n = 10) conditioned by Er,Cr: YSGG laser at (7 W, 25 Hz, 50/50% Water/Air, pulse duration 60 us, irradiation time 2 min); 4- (n = 10) conditioned by Er,Cr:YSGG laser at (5 W, 25 Hz, 50/50% Water/Air, pulse duration 60 us, irradiation time 2 min); 5- (n = 10) conditioned by fractional CO2 laser at (power 8 W, pulse duration 10 ms); 6- (n = 10) conditioned by fractional CO2 laser at (power 6 W, pulse duration 10 ms). Then evaluated by: Profilometer, and scanning electron microscopy.Results: The highest roughness values were found in CO2 laser power 8 W treated samples, followed by Er,Cr:YSGG laser power 7W treated samples. The hydrofluoric acid-etched samples showed roughness values comparable to those of CO2 laser-irradiated samples with a power of 6 W. The untreated sample showed the smoothest surface with the lowest roughness value.Conclusion: The application of Er,Cr:YSGG, fractional CO2 lasers enhances the surface roughness of lithium disilicate samples positively, showing the promised results of using these parameters in bonding procedures.","PeriodicalId":500031,"journal":{"name":"Iraqi journal of laser","volume":"66 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138998578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0