期刊文献+
共找到113篇文章
< 1 2 6 >
每页显示 20 50 100
Erbium-doped yttrium aluminum garnet laser and advanced plateletrich fibrin+in periodontal diseases:Two case reports and review of the literature
1
作者 Kai-Seng Tan 《World Journal of Clinical Cases》 SCIE 2022年第33期12337-12344,共8页
BACKGROUND The goal of periodontal disease treatment is to completely remove bacteria and promote wound healing.The erbium-doped yttrium aluminum garnet(Er:YAG)laser is commonly used to treat periodontal disease.Advan... BACKGROUND The goal of periodontal disease treatment is to completely remove bacteria and promote wound healing.The erbium-doped yttrium aluminum garnet(Er:YAG)laser is commonly used to treat periodontal disease.Advanced platelet-rich fibrin+(A-PRF+)secrets growth factors that accelerates soft-and hard-tissue regeneration and wound healing.Herein I present 2 cases of patients with oral diseases treated with a combination of Er:YAG laser and A-PRF+.CASE SUMMARY Case 1 was a female with pocket depth bone loss over 8 mm and infection of tooth 31 and 41,and severe advanced periodontitis with grade III mobility.Case 2 was a male with tooth 22 root end apical swelling and infection and alveolar bony defects.Clinical outcomes were recorded at 6 and 36 mo.In case 1,the Er:YAG laser was used to perform open flap debridement(100 mJ/pulse,15 Hz)and remove calculus and granulation tissue(50 mJ/pulse,30 Hz).In case 2 the laser was used to create a semilunar full thickness flap incision(80 mJ/pulse,20 Hz)and eliminate the pathogen(100 mJ/pulse,15 Hz).In both patients,A-PRF+mixed with bone was used to fill bone defects,and A-PRF+autologous membranes were used to cover tension-free primary flaps.There was no recurrent infection at 36 mo,and tissue regeneration and would healing occurred.CONCLUSION Debridement with an Er:YAG laser followed by treatment with A-PRF+is effective for the treatment periodontal diseases with bone defects. 展开更多
关键词 erbium-doped yttrium aluminum garnet laser Advanced platelet-rich fibrin+ PERIODONTOLOGY Tissue regeneration and healing Wound healing Case report
下载PDF
Neodymium-doped Yttrium Aluminum Garnet Transparent Laser Ceramics Prepared by Co-precipitation Method 被引量:2
2
作者 Su Chunhui Song Qiong Zhang Huashan Zhang Hongbo Hou Zhaoxia Shao Jing 《Journal of Rare Earths》 SCIE EI CAS CSCD 2006年第1期96-96,共1页
Transparent polycrystaUine neodymiumdoped yttrium aluminum garnet ceramics (Nd:YAG) with better chemical stability, excellent optical and high temperature mechanical property is becoming a new laser host material. ... Transparent polycrystaUine neodymiumdoped yttrium aluminum garnet ceramics (Nd:YAG) with better chemical stability, excellent optical and high temperature mechanical property is becoming a new laser host material. The Nd:YAG precursor powders with loosely dispersed, slightly agglomerated and YAG cubic crystal phase were synthesized at 1100 ℃ by the co-precipitation method combined with the reverse strike, 展开更多
关键词 CO-PRECIPITATION reverse strike neodymium doped-yttrium aluminum garnet transparent ceramics laser materials rare earths
下载PDF
Surgical resection of a large hypopharyngeal hemangioma in an adult using neodymium-doped yttrium aluminum garnet laser: A case report 被引量:1
3
作者 Mang Jin Cheng-Yu Wang +2 位作者 Yun-Xiang Da Wei Zhu Hui Jiang 《World Journal of Clinical Cases》 SCIE 2020年第5期932-938,共7页
BACKGROUND Generally,hemangiomas do not require surgical intervention;however,cases of large hemangiomas,potentially involving the throat and trachea,necessitate surgical therapy.Here,we present a case of hypopharynge... BACKGROUND Generally,hemangiomas do not require surgical intervention;however,cases of large hemangiomas,potentially involving the throat and trachea,necessitate surgical therapy.Here,we present a case of hypopharyngeal hemangioma in an adult that was successfully treated with neodymium-doped yttrium aluminum garnet(Nd-YAG)laser.CASE SUMMARY Laryngoscopic examination of a 61-year-old man demonstrated the presence of a large,submucosal vascular lesion that extended into the epiglottis,left arytenoid cartilage,lateral to the aryepiglottic fold,and pyriform sinus.The lesion was resected and photocoagulated with limited hemorrhage using Nd:YAG laser.The hypopharyngeal hemangioma was completely excised.The patient showed no recurrence of hypopharyngeal hemangioma during the 1.5-year follow-up period.CONCLUSION Laser therapy is one of the effective tools for treating hemangiomas with rapid,uncontrolled growth or in functional areas,with few side effects and complications.The present case of a male patient with a large hypopharyngeal hemangioma,treated with YAG laser,demonstrates the efficacy of laser photocoagulation in treating cases of hemangiomas,without the risk of bleeding or airway obstruction.The favorable postoperative outcomes demonstrated by our patient with Nd:YAG laser therapy indicate its consideration in the therapy of similar cases. 展开更多
关键词 yttrium aluminum garnet laser LARGE ADULT Surgical resection Hypopharyngeal HEMANGIOMA Case report
下载PDF
Synthesis of Neodymium-Doped Yttrium Aluminum Garnet (Nd∶YAG) Nano-Sized Powders by Low Temperature Combustion 被引量:8
4
作者 张华山 苏春辉 +1 位作者 韩辉 侯朝霞 《Journal of Rare Earths》 SCIE EI CAS CSCD 2005年第3期304-308,共5页
The homogeneously dispersed, less agglomerated (Nd0.01Y0.99)3Al5O12 nano-sized powders were synthesized by the low temperature combustion (LCS), using Nd2O3, Y2O3, Al(NO3)3·9H2O, ammonia water and citric acid as ... The homogeneously dispersed, less agglomerated (Nd0.01Y0.99)3Al5O12 nano-sized powders were synthesized by the low temperature combustion (LCS), using Nd2O3, Y2O3, Al(NO3)3·9H2O, ammonia water and citric acid as starting materials. This method effectively solves the problems caused by solid-state reaction at high temperature and hard agglomerates brought by the chemical precipitation method. The powders were characterized by TG-DTA, XRD, FT-IR, TEM respectively and the photoluminescence (PL) spectra of (Nd0.01Y0.99)3Al5O12 green and sintered ceramic disks were measured. The results show that the forming temperature of YAG crystal phase is 850 ℃ and YAP crystal phase appearing during the calcinations transforms to pure YAG at 1050 ℃. The particle size of the powders synthesized by the LCS is in a range of 20~50 nm depending on the thermal treatment temperatures. The effectively induced cross section (σin) with the value 4.03×10-19 cm2 of (Nd0.01Y0.99)3Al5O12 ceramics is about 44% higher than that of single crystal. 展开更多
关键词 laser ceramics neodymium-doped yttrium aluminum garnet (Nd∶YAG) nano-sized powders low temperature combustion synthesis (LCS)
下载PDF
Preparation of Neodymium-Doped Yttrium Aluminum Garnet Transparent Ceramics by Homogeneous Precipitation Method 被引量:5
5
作者 苏春辉 张华山 +5 位作者 韩辉 宋琼 胡海德 张洪波 侯朝霞 邵晶 《Journal of Rare Earths》 SCIE EI CAS CSCD 2005年第6期716-720,共5页
substitutes tion, high loosely dis Neodymium doped-yttrium aluminum garnet (Nd : YAG) transparent polycrystalline ceramics already become of single crystals because they are provided with easy fabrication, low cost... substitutes tion, high loosely dis Neodymium doped-yttrium aluminum garnet (Nd : YAG) transparent polycrystalline ceramics already become of single crystals because they are provided with easy fabrication, low cost, large size, highly doped concentraheat conductivity, mass fabrication, multi-layers and multi-filnctions. The Nd:YAG precursor powders with persed , slightly agglomerated, super fine and YAG cubic crystal phase were synthesized at 1100 ℃ by the homogeneous precipitation method, using Nd2O3, Y2O3, Al(NO3)3·9H2O and urea as raw materials, (NH4)2SO4 as electrical stabilizer, TEOS as sintering additive. The Nd:YAG transparent ceramics were prepared after being vacuum sintered at 1700 ℃ for 5 h. The Nd:YAG ceramic materials were characterized by the TG-DTA, XRD, FT-IR, TEM, FEG-ESEM and FT-PL. The results show that the crystallization temperature of YAG is 850 ℃ and the intermediate crystal phase YAP forming during the heat treatment transforms to YAG cubic crystal phase at 1050 ℃. The lasing wavelength of (Nd0.01 Y0.99)3Al5O12 transparent ceramics is 1.065 μm and there exists a slight red-shift compared to the single crystal with the same chemical composition. The optical transmittance is 45 % in the visible light and 58 % in the near infrared light and the optical transmittance descends with the decreasing the wavelength. 展开更多
关键词 laser materials transparent ceramics neodymium-doped yttrium aluminum garnet (Nd:YAG) nano-sized powders low temperature combustion synthesis (LCS) rare earths
下载PDF
Application of Stereology on Neodymium-Doped Yttrium Aluminum Garnet (Nd∶YAG) Transparent Ceramics 被引量:1
6
作者 张华山 荆敏 +4 位作者 苏春辉 张洪波 候朝霞 邵晶 宋琼 《Journal of Rare Earths》 SCIE EI CAS CSCD 2006年第5期538-542,共5页
Nd : YAG precursor powders were synthesized by homogeneous precipitation, and Nd : YAG transparent ceramics were prepared by vacuum sintering at 1700 ℃ for 5 h. The ceramic materials were characterized by light tra... Nd : YAG precursor powders were synthesized by homogeneous precipitation, and Nd : YAG transparent ceramics were prepared by vacuum sintering at 1700 ℃ for 5 h. The ceramic materials were characterized by light transmittance and field emission gun-environment scanning microscope. Using statistics and stereology theory, study was carried out on the quantitative relationships between light transmittance and stereological parameters in three-dimensional Euclidean space. It is found that the transmittance of Nd:YAG with 1 mm in thickness is about 45% and 58% in visible and near-infrared wavelength, respectively. The transmittance linearly increases with increasing equivalent sphere diameter and reaches the theoretical value of single crystal when the equivalent sphere diameter is 20μm. The transmittance decreases with the increasing of mean specific area per unit volume of grain and discrete grains, and the transmittance decreases with increasing mean free distance of grains in Nd:YAG ceramics. 展开更多
关键词 neodymium doped yttrium aluminum garnet transparent ceramics STEREOLOGY microstructure rare earths
下载PDF
Application of Fractals on Microstructure of Neodymium-Doped Yttrium Aluminum (Nd∶YAG) Transparent Ceramics
7
作者 陆斌 王凤娥 李永大 《Journal of Rare Earths》 SCIE EI CAS CSCD 2007年第S1期142-145,共4页
Nd∶YAG precursor powders were synthesized by homogeneous precipitation and Nd∶YAG transparent ceramics were prepared by vacuum sintering at 1700 ℃ for 5 h. The ceramic materials were characterized by light transmit... Nd∶YAG precursor powders were synthesized by homogeneous precipitation and Nd∶YAG transparent ceramics were prepared by vacuum sintering at 1700 ℃ for 5 h. The ceramic materials were characterized by light transmittance, field emission gun-environment scanning microscope. Fractal geometry was used to study the quantitative relationships between light transmittance and fractal dimensions of Nd∶YAG transparent ceramics. It was found that the transmittance of Nd∶YAG with 1 mm in thickness was about 45% and 58% in visible and near-infrared region respectively. The microstructures of Nd∶YAG transparent ceramics were obvious fractal characteristic and fractal dimensions depart a little from two-dimension. The light transmittance decreased with increasing of fractal dimension and nonlinear fit curve was y=1350-1185x+269x2 between fractal dimension and light transmittance of Nd∶YAG transparent ceramics. 展开更多
关键词 neodymium-doped yttrium aluminum garnet transparent ceramics fractals MICROSTRUCTURE rare earths
下载PDF
Er:YAG激光和传统车针去龋后牙本质粘接强度的比较
8
作者 黄莉莉 张佳钰 《医疗卫生装备》 CAS 2024年第4期56-60,共5页
目的:比较使用不同模式Er:YAG激光以及传统车针去龋后牙本质与复合树脂的粘接强度。方法:选用人类离体磨牙模拟龋坏,分别采用Er:YAG激光中短脉冲(medium short pulse,MSP)模式、Er:YAG激光超短脉冲(super short pulse,SSP)模式和传统车... 目的:比较使用不同模式Er:YAG激光以及传统车针去龋后牙本质与复合树脂的粘接强度。方法:选用人类离体磨牙模拟龋坏,分别采用Er:YAG激光中短脉冲(medium short pulse,MSP)模式、Er:YAG激光超短脉冲(super short pulse,SSP)模式和传统车针去除模拟的龋坏后,采用自酸蚀粘接剂将牙体标本与复合树脂粘接制成试件。使用万能试验机对试件进行拉伸试验,测得断裂负荷和粘接强度,并采用单因素方差分析和Tukey多重比较进行统计学分析。采用扫描电子显微镜观察3种不同去龋方式处理后的牙本质表面形态,以及涂布自酸蚀粘接剂并固化后试件的横截面形态。结果:使用Er:YAG激光MSP模式处理后牙本质与复合树脂的粘接强度最高,SSP模式处理后次之,传统车针处理后最低,但差异无统计学意义(P>0.05)。扫描电子显微镜图像显示,Er:YAG激光MSP模式处理后的牙本质表面较平坦,牙本质小管内几乎没有残屑;Er:YAG激光SSP模式处理后的牙本质表面呈现鳞片状,牙本质小管内可见少量碎屑;而传统车针处理后牙本质小管大部分处于被表面牙本质部分甚至完全遮盖的状态,牙本质小管内充满残屑。结论:使用Er:YAG激光去龋相比传统车针去龋可以获得较好的牙本质粘接强度,且对牙本质小管的处理深度和洁净度明显优于传统车针去龋,其中MSP模式更佳。 展开更多
关键词 ER:YAG激光 传统车针 去龋 牙本质 粘接强度
下载PDF
YAG激光联合渗透树脂辅助诊室漂白治疗氟斑牙的临床疗效和舒适度分析
9
作者 苑学微 李娜 牛家慧 《河北医药》 CAS 2024年第14期2131-2134,2139,共5页
目的 探讨在诊疗室应用YAG激光配合渗透性树脂漂白对氟斑牙的疗效。方法 选取2020-2022年石家庄市第二医院口腔科诊治的氟斑牙患者90例,按照随机数字表法分为A、B组,每组45例。A组采用低能量(YAG)激光处理,同时加以诊室漂白,B组采用低能... 目的 探讨在诊疗室应用YAG激光配合渗透性树脂漂白对氟斑牙的疗效。方法 选取2020-2022年石家庄市第二医院口腔科诊治的氟斑牙患者90例,按照随机数字表法分为A、B组,每组45例。A组采用低能量(YAG)激光处理,同时加以诊室漂白,B组采用低能量(YAG)激光处理,并与渗透树脂辅助诊室漂白相联合,用VITA比色板作脱色前后对比,以分光比色仪记录美白后釉质表面的色阶和色度。使用分光光度计和Vita指南记录每个时间节点的牙齿颜色变化,2年的随访中,评估牙齿美白前后的颜色反色效应。比较2组患者治疗后的牙齿敏感发生率。结果 治疗后2组患者牙齿颜色均变白,但B组患者牙齿颜色等级显著低于A组,差异有统计学意义(P<0.001)。1周美白治疗后,A、B组患者的漂白总有效率分别为75.56%、73.33%,差异无统计学意义(P>0.05);6个月后,B组和A组的漂白总有效率分别为80.00%和75.56%,差异无统计学意义(P>0.05);1年后,B组和A组的漂白总有效率分别为100%和80.00%,差异有统计学意义(P<0.05);2年后,B组总有效率为100%,A组为82.22%,差异有统计学意义(P<0.05)。治疗后立即牙敏感率B组为40.00%明显小于A组的93.33%(P<0.05);2组在用药24 h内均未出现过敏反应。结论 YAG激光联合渗透树脂辅助诊室漂白治疗中度氟斑牙在临床上具有相对更好的疗效和舒适度。 展开更多
关键词 YAG激光 渗透树脂 诊室漂白 氟斑牙治疗
下载PDF
Synthesis and Characterization of Neodymium and Ytterbium-doped Yttrium Aluminum Garnet Nano-powder
10
作者 ZHANG Xuejian BI Meng +3 位作者 LI Chun HU Hongliang LI Shouyin LIU Jinghe 《Journal of the Chinese Ceramic Society》 2016年第2期98-101,共4页
Nd/Yb-co-doped YAG transparent ceramic nano-powder was prepared by a sol-gel combustion method.The structure,morphology and properties were characterized by thermogravimetric-differential thermal analysis,X-ray diffra... Nd/Yb-co-doped YAG transparent ceramic nano-powder was prepared by a sol-gel combustion method.The structure,morphology and properties were characterized by thermogravimetric-differential thermal analysis,X-ray diffraction,transmission electron microscopy,infrared spectroscopy,absorption analysis and fluorescence spectroscopy,respectively.The results show that the mass loss of the powder calcinated at 900 ℃ for 3 h is 49.56%.A well-crystallized Nd/Yb:YAG nano-powder with the superior sintering performance and high purity is obtained,and the morphology of the particles with the average diameter in the range of 60-100 runs appears regular.The nano-powder exhibits an intense absorption at 808 nm,corresponding to the 4I/9/2-4F7/2 transition of Nd^(^(3+) ions,which is suitable to absorb the wavelength of 808 nm from a laser diode source.The emission peak at 1046 nm of the Nd/Yb:YAG powder is more intense than that of Nd^(^(3+):YAG powder.It is indicated that the energy absorbed by Yb^(^(3+) ions from the laser diode source can be transmitted to Nd^(^(3+) ions based on the cross relaxation process of[(4F3/2)Nd,(2F7/2)Yb]-[(479/2)Nd,(2F5/2)Yb]. 展开更多
关键词 sol-gel combustion method neodymium and ytterbium-doped yttrium aluminum garnet transparent ceramics NANO-POWDER properties characterization
原文传递
探究YAG激光结合矿物三氧化物凝聚体对儿童乳牙牙髓炎的治疗效果及安全性分析
11
作者 包琪 贾欢 《中外医疗》 2024年第27期66-69,共4页
目的深入探究YAG激光结合矿物三氧化物凝聚体对儿童乳牙牙髓炎的治疗效果及其安全性。方法本研究采用回顾性分析方法,选取2022年6月—2024年1月单县中心医院口腔科收治的126例乳牙牙髓炎患儿的临床资料。根据治疗方法的不同分为联合组... 目的深入探究YAG激光结合矿物三氧化物凝聚体对儿童乳牙牙髓炎的治疗效果及其安全性。方法本研究采用回顾性分析方法,选取2022年6月—2024年1月单县中心医院口腔科收治的126例乳牙牙髓炎患儿的临床资料。根据治疗方法的不同分为联合组和常规组,每组63例。常规组应用矿物三氧化物凝聚体进行修补治疗,联合组额外采用钇铝石榴石(yttrium aluminum garnet,YAG)激光治疗。对比两组患儿的牙周状况、炎性因子水平、咀嚼功能、并发症发生情况。结果治疗后,联合组牙周情况、炎性因子水平以及咀嚼功能均优于常规组,差异有统计学意义(P均<0.05)。联合组并发症总发生率6.35%(4/63)低于常规组的19.05%(12/63),差异有统计学意义(χ^(2)=4.582,P<0.05)。结论YAG激光结合矿物三氧化物凝聚体在儿童乳牙牙髓炎的治疗中能有效改善患儿的牙周情况,降低炎性因子水平提升患儿的咀嚼功能,并减少并发症的产生。 展开更多
关键词 儿童乳牙牙髓炎 钇铝石榴石激光 矿物三氧化物凝聚体 治疗效果 安全性分析
下载PDF
铒激光在逆行性种植体周围炎预防及治疗中的应用
12
作者 罗心怡 罗新年 《赣南医科大学学报》 2024年第10期1078-1082,1087,共6页
逆行性种植体周围炎(Retrograde peri-implantitis,RPI)是指在种植体植入术后短期内出现疼痛、肿胀、叩痛、瘘管等临床症状的一类根尖周病变。铒激光(Erbium yttrium-aluminium-garnet laser,Er∶YAG)能在种植体周围炎治疗中发挥有效的... 逆行性种植体周围炎(Retrograde peri-implantitis,RPI)是指在种植体植入术后短期内出现疼痛、肿胀、叩痛、瘘管等临床症状的一类根尖周病变。铒激光(Erbium yttrium-aluminium-garnet laser,Er∶YAG)能在种植体周围炎治疗中发挥有效的机械清洁作用,明显改善种植体周软组织的龈沟出血指数、探诊深度等,同时促进软硬组织的愈合和再生。目前,关于Er∶YAG在RPI的临床研究较少,本文结合近年来国内外研究文献,对Er∶YAG在RPI的预防及治疗中的应用进行综述。文献复习结果表明,Er∶YAG在RPI早期预防中的应用主要是种植位点保存、即刻种植以及邻牙显微根尖手术。Er∶YAG在RPI的治疗中也有广阔的应用,主要用于根尖病变处理、牙槽骨修整术、引导性骨再生以及术区残余细菌的清理等方面。 展开更多
关键词 铒激光 逆行性种植体周围炎 骨愈合
下载PDF
Bouveret syndrome masquerading as a gastric mass-unmasked with endoscopic luminal laser lithotripsy:A case report
13
作者 Swetha Parvataneni Harshit S Khara David L Diehl 《World Journal of Clinical Cases》 SCIE 2020年第22期5701-5706,共6页
BACKGROUND Bouveret syndrome,also known as gallstone ileus,is a rare form of gastric outlet obstruction accounting for 1%-3%of cases.This condition is most often reported in females.The diagnosis can be challenging an... BACKGROUND Bouveret syndrome,also known as gallstone ileus,is a rare form of gastric outlet obstruction accounting for 1%-3%of cases.This condition is most often reported in females.The diagnosis can be challenging and is often missed due to atypical presentations,which occasionally mimic gastric outlet obstruction symptoms such as nausea,vomiting,loss of appetite and hematemesis.The symptoms vary with stone size.Larger stones are managed with a surgical approach,but this carries increased morbidity and mortality.Over the past decade,the endoscopic approach has emerged as an alternative mode of treatment,but it is generally unsuccessful in the management of larger-sized stones.A literature review revealed cases of successful endoscopic treatment requiring multiple sessions for stone sizes measuring up to about 4.5 cm.Here we present a unique case of an elderly patient with Bouveret syndrome with a 5 cm stone mimicking a gastric mass and causing gastric outlet obstruction,who was successfully managed in a single session using a complete endoscopic approach with laser lithotripsy.CASE SUMMARY An 85-year-old female patient presented with 1-month history of intermittent abdominal pain,vomiting,decreased appetite and weight loss.An abdominal computed tomography showed a 4.5 cm×4.7 cm partially calcified mass at the gastric pylorus causing gastric outlet obstruction.Endoscopy showed an ulcerated fistulous opening and a large 5 cm impacted gallstone in the duodenal bulb.Endoscopic nets and baskets were used in an attempt to remove the stone,but this approach was unsuccessful.Given her advanced age,poor physical condition and underlying comorbidities,she was deemed to be high-risk for surgery.Thus,a minimally invasive approach using endoscopic laser lithotripsy was attempted and successfully treated the stone.Post-procedure,the patient experienced complete resolution of her symptoms with no complications and was able to tolerate her diet.She was subsequently discharged home at 48 h,with an uneventful recovery.CONCLUSION In our paper we describe Bouveret syndrome and highlight its management with a novel endoscopic approach of laser lithotripsy in addition to various other endoscopic approaches available to date and its success rates. 展开更多
关键词 Gastric outlet obstruction Bouveret syndrome laser lithotripsy Holmium laser lithotripsy Holmium and neodymium yttrium aluminum garnet lasers Case report
下载PDF
A Experimental Study on the Micromorphorogical Effect of Nd∶YAG Laser in Endodontic Therapy
14
作者 朱庆萍 孙卫斌 +2 位作者 俞未一 蒋欣泉 濮祖茂 《The Journal of Biomedical Research》 CAS 1996年第2期33-36,共4页
The canal walls of extracted human teeth, following Nd∶YAG Laser irradiation, were examined with a scanning electron microscope and compared with those prepared with conventional methods or pretreated with citric aci... The canal walls of extracted human teeth, following Nd∶YAG Laser irradiation, were examined with a scanning electron microscope and compared with those prepared with conventional methods or pretreated with citric acid as control. The results showed that all the dentinal tubules were closed and smeared layer disrupted following laser irradiation, It was suggested that Nd∶YAG Laser irradiation would be expectablly applied to endodontics, especially in root canal therapy (RCT). 展开更多
关键词 root canal \ neodymium yttrium aluminum garnet\ laser \ scanning electron microscope
下载PDF
Successful Treatment of Mutinucleate Cell Angiohistiocytoma with Nd:YAG Laser
15
作者 Salih Mishlab Emily Avitan-Hersh Ziad Khamaysi 《Journal of Cosmetics, Dermatological Sciences and Applications》 2021年第1期38-43,共6页
A 50-year-old man had noticed the gradual appearance of asymptomatic skin lesions on the dorsal aspects of the hands during the last 3 years. Physical examination revealed clusters of multiple purplish dome-shaped inf... A 50-year-old man had noticed the gradual appearance of asymptomatic skin lesions on the dorsal aspects of the hands during the last 3 years. Physical examination revealed clusters of multiple purplish dome-shaped infiltrated papules. Histopathological examination was compatible mutinucleate cell angiohistiocytoma. We treated him with 10,464 nm Nd:YAG laser, after the second session, some of the lesions had disappeared completely while the rest has gained substantial improvement. There were no adverse reactions and no recurrence after two years of follow-up. MCAH is a rare vascular fibrohistiocytic proliferation. No standard of care exists. We believe that Nd:YAG laser should be considered the treatment of choice. 展开更多
关键词 Mutinucleate Cell Angiohistiocytoma laser Therapy Nd:YaG-Neodymium-doped yttrium aluminum garnet
下载PDF
Nd:YAG激光爆破模式对后囊膜切开术效果的影响
16
作者 马英慧 贾璐瑶 +3 位作者 杨洁 马琳丽 谭小波 刘刚 《中国医药导报》 CAS 2023年第21期125-128,191,共5页
目的探讨掺钕钇铝石榴石(Nd:YAG)激光不同爆破模式对后囊膜切开术效果的影响。方法收集2017年12月至2019年12月承德医学院附属医院治疗的后囊膜混浊患者59例59眼,采用随机数字表法将其分为单脉冲组(29例)和多脉冲组(30例)。比较两组手... 目的探讨掺钕钇铝石榴石(Nd:YAG)激光不同爆破模式对后囊膜切开术效果的影响。方法收集2017年12月至2019年12月承德医学院附属医院治疗的后囊膜混浊患者59例59眼,采用随机数字表法将其分为单脉冲组(29例)和多脉冲组(30例)。比较两组手术前后最佳矫正视力(BCVA)、眼压、前房闪辉和前房细胞发生等级、黄斑中心区视网膜厚度和生活质量等。结果术后1周,两组BCVA均高于术前(P<0.05)。两组不同时间点眼压比较,差异有统计学意义(P<0.05)。术后1周,两组前房闪辉和前房细胞发生等级均低于术后1 h(P<0.05)。单脉冲组Nd:YAG激光总能量低于多脉冲组(P<0.05)。两组不同时间点黄斑中心区视网膜厚度比较,差异有统计学意义(P<0.05)。结论后囊膜切开术中Nd:YAG激光单脉冲模式较多脉冲模式节省激光能量,减轻眼内光损伤,临床中可首选应用。 展开更多
关键词 掺钕钇铝石榴石激光 后囊膜切开术 脉冲 后囊膜混浊
下载PDF
稀土氧化物掺杂对Y_(3)Al_(5)O_(12)热障涂层材料热膨胀性能的影响
17
作者 王炫力 刘爽 +3 位作者 谢敏 王志刚 牟仁德 宋希文 《内蒙古科技大学学报》 CAS 2023年第1期58-65,共8页
采用固相烧结法制备稀土氧化物(Gd_(2)O_(3),Er_(2)O_(3),Sc_(2)O_(3))掺杂钇铝石榴石(YAG)热障涂层材料.通过X射线衍射仪、扫描电镜和热膨胀仪研究掺杂离子种类、含量和掺杂位置对材料物相组成、微观形貌和热膨胀性能的影响规律.结果显... 采用固相烧结法制备稀土氧化物(Gd_(2)O_(3),Er_(2)O_(3),Sc_(2)O_(3))掺杂钇铝石榴石(YAG)热障涂层材料.通过X射线衍射仪、扫描电镜和热膨胀仪研究掺杂离子种类、含量和掺杂位置对材料物相组成、微观形貌和热膨胀性能的影响规律.结果显示:阳离子半径小于Y^(3+)的Sc_(2)O_(3)掺杂YAG陶瓷材料热膨胀性能最优.当掺杂量x为0.6时,(Y_(0.4)Sc_(0.6))_(3)Al_(5)O_(12)陶瓷的平均热膨胀系数最大,约为12.34×10^(-6)K^(-1),比纯YAG陶瓷的平均热膨胀系数(~8×10^(-6)K^(-1))提高了约50%. 展开更多
关键词 热障涂层 钇铝石榴石 稀土氧化物 掺杂 热膨胀
下载PDF
掺钕钇铝石榴石激光联合脱敏牙膏封闭牙本质小管后抗酸蚀的效果评价
18
作者 李珍 赵继志 +4 位作者 李倩 李春兰 蔡文 常金兰 杨文东 《中国医学科学院学报》 CAS CSCD 北大核心 2023年第5期809-813,共5页
目的 评估掺钕钇铝石榴石(Nd∶YAG)激光和含有氟化亚锡系统的脱敏牙膏不同应用顺序对牙本质小管封闭效果的影响。方法 选择12颗完整的新鲜拔除的人第三磨牙制备成0.8 mm厚牙本质片,将每个牙本质片再分为4小片,取其中3小片,用6%的柠檬酸... 目的 评估掺钕钇铝石榴石(Nd∶YAG)激光和含有氟化亚锡系统的脱敏牙膏不同应用顺序对牙本质小管封闭效果的影响。方法 选择12颗完整的新鲜拔除的人第三磨牙制备成0.8 mm厚牙本质片,将每个牙本质片再分为4小片,取其中3小片,用6%的柠檬酸进行腐蚀,随机分配至以下3组(n=12):(1)对照组:无处理;(2)Nd∶YAG激光+牙膏(TB)组:先用Nd∶YAG激光照射,后用脱敏牙膏刷牙;(3)TB+Nd∶YAG组:先用脱敏牙膏刷牙,后用Nd∶YAG激光照射。Nd∶YAG激光照射参数均为:1 W,15脉冲/s,脉冲宽度150μs,照射10 s, 6个循环。经上述处理后,将Nd∶YAG+TB组和TB+Nd∶YAG组的12个牙本质片随机分配到4个亚组(n=3),分别在可口可乐液中接受酸蚀0、5、10、15 min。采用扫描电子显微镜观察各组牙本质片并拍片,由8名单盲检查员根据统一标准给出评分,采用方差分析对各组评分进行比较。结果 酸蚀前,Nd∶YAG+TB组和TB+Nd∶YAG组的牙本质小管封闭评分分别为(4.83±0.09)分和(3.85±0.66)分,均明显高于对照组的(0.10±0.07)分(P均<0.0001),Nd∶YAG+TB组与TB+Nd∶YAG组差异无统计学意义(P=0.0590)。Nd∶YAG+TB组酸蚀5、10、15 min牙本质小管封闭评分分别为(4.33±0.60)、(4.27±0.24)、(3.63±0.07)分,与TB+Nd∶YAG组的(4.04±0.10)、(3.76±0.59)、(3.17±0.29)分差异均无统计学意义(P均>0.05)。在Nd∶YAG+TB亚组中,酸蚀15 min牙本质小管封闭评分明显低于酸蚀前(P=0.0011)。在TB+Nd∶YAG组中,酸蚀前后牙本质小管封闭评分间差异无统计学意义(P>0.05)。结论 适当参数的Nd∶YAG激光照射结合使用脱敏牙膏,不论先后顺序,均可以产生良好的牙本质小管封闭效果,但是先用脱敏牙膏刷牙后用Nd∶YAG激光照射组在酸蚀后的牙本质封闭效果更稳定。 展开更多
关键词 掺钕钇铝石榴石激光 牙本质敏感症 酸蚀 牙膏
下载PDF
Nd:YAG激光治疗糖尿病患者后发性白内障的临床研究 被引量:4
19
作者 邹引 《基层医学论坛》 2023年第2期5-7,11,共4页
目的 探讨掺钕钇铝石榴石(Nd:YAG)激光后囊膜切开术治疗伴有2型糖尿病(T_(2)DM)的后发性白内障的疗效及安全性。方法 对2019年12月-2021年9月江西省景德镇市第一人民医院收治的60例行Nd:YAG激光后囊膜切开术的后发性白内障患者临床资料... 目的 探讨掺钕钇铝石榴石(Nd:YAG)激光后囊膜切开术治疗伴有2型糖尿病(T_(2)DM)的后发性白内障的疗效及安全性。方法 对2019年12月-2021年9月江西省景德镇市第一人民医院收治的60例行Nd:YAG激光后囊膜切开术的后发性白内障患者临床资料进行回顾性分析,其中伴T_(2)DM患者30例(观察组),非T_(2)DM患者30例(对照组)。比较2组术前、术后4周视力、眼压、前房深度及角膜内皮细胞变化情况,记录并发症。结果 术后4周,2组裸眼视力、矫正视力较术前明显提高,而眼压、前房深度、角膜内皮细胞密度(CECD)、角膜内皮细胞变异系数及六边形细胞比例较术前明显降低(P<0.05),但组间差异不明显(P>0.05);观察组术后总并发症发生率为36.67%,较对照组的23.33%略高,但差异无统计学意义(P>0.05)。结论 采用Nd:YAG激光后囊膜切开术治疗伴有T_(2)DM的后发性白内障安全有效,与非T_(2)DM患者疗效相当。 展开更多
关键词 糖尿病 后发性白内障 掺钕钇铝石榴石激光 视力 眼压 前房深度 角膜内皮
下载PDF
上一页 1 2 6 下一页 到第
使用帮助 返回顶部