掺铒铬钇钪镓石榴石激光去腐备洞技术的临床评价

目的：应用掺铒铬钇钪镓石榴石（Er,Cr：YSGG）激光去腐备洞技术在减轻疼痛、充填后远期效果及工作效率等方面的临床评价。方法：选择口内同时存在2个龋坏程度相似的同名牙病例30例,自身对照方法,分别采用Er,Cr：YSGG激光（实验组）和传统涡轮牙钻（对照组）去腐备洞。使用Wong-Baker面部表情量表对治疗过程中的疼痛程度进行评估,调查每个病例对两种方法的接受程度,记录去腐备洞时间,并分别在治疗后6个月,12个月复查充填体情况。结果：和传统的涡轮牙钻去腐备洞比较,Er,Cr：YSGG激光可明显减轻备洞过程中的疼痛,差异有显著性（P＆lt;0.01）;80%的患者更愿意选择Er,Cr：YSGG激光技术进行治疗;Er,Cr：YSGG激光和涡轮牙钻去腐备洞的平均时间分别是504s和390s;治疗后6个月,12个月复查,实验组和对照组差异无显著性。结论：Er,Cr：YSGG激光去腐备洞技术可显著减轻治疗过程中的疼痛和不适,在切割牙体硬组织方面具有独特的优点。     

Er,Cr:YSGG激光治疗原发性三叉神经痛疗效的临床观察

目的:观察Er,Cr:YSGG激光对原发性三叉神经痛的治疗效果。方法:46例原发性三叉神经痛患者随机分为两组,实验组采用Er,Cr:YSGG激光照射治疗,对照组采用三叉神经分支阻滞治疗。采用VAS及SF-MPQ进行评价。结果:实验组VAS及SF-MPQ值低于对照组(P<0.05),差异具有统计学意义。VAS值及SF-MPQ有随时间变化的趋势。结论:Er,Cr:YSGG激光治疗原发性三叉神经痛有较好的安全性及治疗效果。     

Er,Cr:YSGG激光对慢性牙周炎的短期疗效评估

目的评价Er,Cr:YSGG激光对慢性牙周炎的短期临床疗效。方法分别以Er,Cr:YSGG激光以及传统的龈下刮治手器对20例中重度慢性牙周炎患者进行牙周基础治疗,评价治疗后1个月、3个月临床附着水平(CAL),探诊深度(PD)以及探诊出血指数BOP(+)百分比的变化。采用视觉模拟评分法(VAS)记录患者对两种治疗的疼痛程度。结果所有患者对两组治疗均耐受,在激光组中未见明显副作用,两组VAS无明显差异(P>0.05)。治疗后1个月,Er,Cr:YSGG激光组BOP(+)百分比从45%降至12%。手器治疗组从43%降至13%。治疗后1个月,激光组和传统手器组患者的临床指标均有显著改善(P<0.05);治疗后3个月,两组疗效基本维持稳定,与基线相比,患者的各项牙周指标均明显改善,而两组间改善程度无明显差异(P>0.05)。结论相对于传统的治疗模式Er,Cr:YSGG激光有着显著的优点,且临床疗效与传统治疗类似。因此,Er,Cr:YSGG激光可作为一种新兴的可靠的方法治疗慢性牙周炎。     

Er,Cr:YSGG激光治疗糜烂型口腔扁平苔藓的疗效观察

观察Er,Cr:YSGG激光在LLLT模式下治疗糜烂型口腔扁平苔藓的临床疗效。方法 对53例临床经病理确诊的糜烂型口腔扁平苔藓患者随机分为两组,实验组例27例,使用Er,Cr:YSGG激光的LLLT模式;对照组26例,采取地塞米松注射液局部注射治疗。观察2组治疗糜烂型OLP的短期临床疗效。结果 (1)实验组总有效率为81.48%,对照组总有效率为76.92%,2组总有效率无显著性差异（P>0.05）。(2)实验组治疗后1周、2周、4周与治疗前比较VAS评分有统计学差异（P<0.05）;对照组治疗后2周、4周与治疗前比较VAS评分有统计学差异（P<0.05）;治疗后1周、2周2组VAS评分比较均有统计学差异（P<0.05）。结论 两种方法对糜烂型口腔扁平苔藓均有显著疗效,Er,Cr:YSGG激光能显著缓解患者疼痛症状,且无创、无痛、无毒副反应,值得临床应用推广。     

Er,Cr:YSGG激光制备对牙体抗剪切强度影响的实验研究

目的　比较Er,Cr:YSGG激光与传统高速手机两种切割方法对牙体抗剪切强度的影响 ,分析Er,Cr:YSGG激光是否可以提高牙面的黏结强度。方法　选取新鲜离体牛上中切牙 4 6颗 ,分为两组 ,分别采用Er,Cr :YSGG激光和高速手机切割牙体。通过分组对照 ,进行抗剪切强度实验、扫描电镜观察、能谱分析及X线衍射分析。结果　Er,Cr:YSGG激光组的抗剪切强度高于高速手机组 (P <0 .0 0 1) .扫描电镜下观察 ,激光组的牙体表面清洁、粗糙 ,无玷污层存在 ,牙本质小管口开放 ,无裂化、熔融等热损伤迹象 ;能谱分析与X线衍射分析结果表明 ,两组样本在表面成分、结构上无明显差异。结论　Er,Cr:YSGG激光制备牙体不会引起牙体组织成分及结构的改变 ;Er,Cr:YSGG激光制备后的牙体抗剪切强度高于高速手机制备后的牙体 ,Er,Cr:YSGG激光制备牙体可以提高牙体的黏接强度。     

Er,Cr:YSGG激光在根管治疗术中根管清理方面的应用

随着激光在口腔医学领域的研究范围逐渐广泛,各类激光在牙体牙髓治疗中的应用也受到较高关注。根管治疗术是目前治疗牙髓病及根尖周病的首选方法,而根管清理是根管治疗术成败的关键性环节。Er,Cr:YSGG激光因其具有杀菌消毒、去除根管内壁玷污层、清除根管内牙本质碎屑及其他感染物质而成为在根管清理方面最具应用优势和发展前景的激光之一。本文就Er,Cr:YSGG激光在根管治疗术中根管清理方面的应用研究进行综述,期望对Er,Cr:YSGG激光在口腔临床中的应用有所帮助。     

Er,Cr:YSGG激光对乳牙硬组织粘接性能影响的研究进展

Er,Cr:YSGG激光以其能够安全、精确地切割牙体硬组织而成为近年来激光牙科学的研究热点.Er,Cr:YSGG激光照射后牙体硬组织的表面形态、成分及结构均发生改变,这些变化对后续修复材料粘接力的影响目前还存在争议.本文从Er,Cr:YSGG激光用于牙体硬组织切割的机制、乳牙组织的结构特点、Er,Cr:YSGG激光处理对乳牙牙体硬组织粘接力的影响、Er,Cr:YSGG激光在儿童口腔领域应用的安全性、优势及展望做一综述.     

Er,Cr:YSGG激光照射对窝沟封闭剂粘结性的影响

目的 :探讨Er,Cr:YSGG激光照射作为窝沟封闭前釉质预处理方式的可能性。方法 :以 40颗离体前磨牙做为标本 ,随机分成 4组 ,唇面釉质分别采用下列方式处理 ,A组 :杯状刷处理 酸蚀 ,B组 :钻切割 酸蚀。C组 :Er ,Cr :YSGG激光照射 ,D组 :Er,Cr :YSGG激光照射 酸蚀。测试窝沟封闭剂与釉质面的抗剪强度 ,并用扫描电镜观察 4种方式处理后釉质表面的形态特征。结果 :Er ,Cr :YSGG激光照射与传统杯状刷或钻处理后酸蚀的釉质面抗剪强度相似无显著性差异 (P >0 .0 5 ) ,Er ,Cr:YSGG激光照射后酸蚀也不增大抗剪强度。SEM观察Er ,Cr :YSGG激光照射后的釉质面不规则 ,鱼鳞状 ,无玷污层。结论 :Er ,Cr :YSGG激光照射可代替传统杯状刷或钻处理后酸蚀 ,是一种较好的窝沟封闭前预处理方式     

Er,Cr:YSGG激光备洞对兔牙髓组织热休克蛋白70表达的影响

目的观察Er,Cr:YSGG激光用于牙体窝洞制备后兔牙髓的形态学变化及热休克蛋白70(heat shockprotein70 HSP70)的表达情况。方法用Er,Cr:YSGG激光在家兔前牙制备V类洞并常规充填,普通高速牙钻备洞作对照,分别于术后4h、24h处死实验动物,组织切片经HE染色及免疫组化染色,镜下观察。结果 Er,Cr:YSGG激光备洞后牙髓轻到中度炎症反应,与牙钻对照组无明显差异。备洞后24h,激光组成牙本质细胞HSP70中到强阳性表达,成纤维细胞、血管内皮细胞中度阳性表达。牙钻组成牙本质细胞及相邻成纤维细胞强阳性表达,血管内皮细胞强阳性表达,对照组HSP70表达高于Er,Cr:YSGG激光实验组,差别有统计学意义(P<0.05)。结论 Er,Cr:YSGG激光备洞对牙髓刺激小,有很好的临床使用价值。     

Er,Cr∶YSGG激光联合Hybrid Coat脱敏剂治疗牙本质过敏症的疗效观察

目的:评价Er,Cr∶YSGG激光联合Hybrid Coat脱敏剂在牙本质过敏中的治疗效果.方法:纳入100名牙本质暴露患者(310颗牙齿),随机分为A、B、C3组,A组Er,Cr∶YSGG激光治疗(n = 106);B组Hybrid Coat治疗(n = 100),C组Hybrid Coat联合Er,Cr∶YSGG激...     

Removal of fibrous epulis with Er,Cr:YSGG laser: case report.

BACKGROUND: Epulis is a benign tumour located in the area of the alveolar bone, periodontal ligament and marginal gingiva. A clinical case of Epulis, treated using an Er,Cr:YSGG laser in our Paediatric Dentistry division of the PTV Hospital, University of Rome Tor Vergata, is described. CASE REPORT: A pink, sessile, broad-based lesion, elastic in consistency, was detected on the maxillary vestibular gum above the lateral right incisor. The lesion was removed with Er,Cr:YSGG laser (2780 nm) without anaesthetic infiltration, power ranged from 1,5 to 2,0 Watts at 20 Hz repetition rate under 20%-15% air-water spray. The histopathological examination confirmed the diagnosis of fibrous epulis. The immediate postoperative course was excellent, with no pain or need for anti-inflammatory or analgesic drugs. Wound healing was good after 1 week, and was completed after 1 month. The patient was followed up for 3-6 months, and checked again after 1 and 2 years to assess possible relapse. The Er,Cr:YSGG laser has several treatment advantages, fundamental in Paediatric Dentistry: it requires only topical anaesthesia, it has a high clinical safety, there is a short treatment time, no surgical sutures are required; no complications were encountered during or immediately following laser surgery, all resulting in excellent patient cooperation.     

Er、Cr:YSGG激光根管内照射对根管封闭效果的影响

目的:探讨常规根管预备后使用不同能量的Er、Cr:YSGG激光进行根管内照射对根充后根管封闭效果的影响。方法:选择新拔除的单根管牙105颗,分成7组,每组15颗牙。切除牙冠后,常规进行根管预备。第1组不进行任何处理,作为阳性对照组;第2组为1W、有水激光照射;第3组为1W、无水激光照射;第4组为2W、有水激光照射;第5组为2W、无水激光照射;第6组为3W、有水激光照射;第7组为3W、无水激光照射。根充后进行根尖微渗漏检测,评估根管封闭效果。采用单因素方差分析(Anova)进行多组间总体均数比较,q检验进行组间比较。结果:除3W无水组外,其他各激光组与对照组相比,根尖微渗漏深度均有显著性差异(P<0.05);其中1W无水组与对照组相比具有高度显著性差异(P<0.01)。结论:较低能量(除外3W、无水)Er、Cr:YSGG激光进行根管内照射,能够有效提高根管充填后的封闭效果,其中1W、无水激光照射时根管封闭效果最好。     

Irritation fibroma removal: a comparison of two laser wavelengths

Laser wavelengths are available that offer dentists treatment options for both hard and soft oral tissues. This article discusses the benefits of removing hypertrophic soft tissue by using an all-tissue laser. A clinical case is presented involving the use of both an 810 nm diode laser and a 2,780 nm Er,Cr:YSGG laser to remove two irritation fibromas, both located on the left cheek of the same patient. This unique perspective was ideal for comparing the healing of each wound. The Er,Cr:YSGG appeared to have a less traumatic effect on target tissue and offered improved postoperative healing, faster recovery time, and less trauma than traditional surgical modalities.     

A comparative histological and immunohistochemical study of wound healing following incision with a scalpel, CO(2) laser or Er,Cr:YSGG laser in the Guinea pig oral mucosa

Abstract Purpose. This study was undertaken to compare wound healing following incisions with either a scalpel, CO(2) laser or Er,Cr:YSGG laser in Guinea pig oral mucosa. Materials and methods. Three types of wounds were randomly introduced with either a stainless steel scalpel, CO(2) laser or Er,Cr:YSGG laser in the buccal mucosa of each of 22 Guinea pigs. Four Guinea pigs were sacrificed on day 1, day 3 and day 5 post-surgery. Five Guinea pigs were sacrificed on day 7 and day 14 post-surgery. Biopsy samples from each oral mucosa wound were examined and the expression of TNF-α and TGF-?1 was determined by immunohistochemical staining. Results. At day 3 post-surgery, the histological pattern of the healing process was similar in the scalpel and Er,Cr:YSGG laser wounds and there were more ulcerations present in the CO(2) laser wounds than in the scalpel and Er,Cr:YSGG laser wounds. The level of TNF-α expression was twice in the laser wounds that in the scalpel wounds. A higher level of TGF-β1 expression was seen at day 7 post-surgery and a lower level at day 14 post-surgery in the CO(2) laser wounds than in the scalpel and Er,Cr:YSGG laser wounds. Conclusions. The Er,Cr:YSGG laser has many advantages for oral surgery due to a low inflammatory response and minimal damage of the tissue. Although a CO(2) laser has better hemostatic ability, its use causes greater tissue damage than a scalpel and Er,Cr:YSGG laser. However, further larger studies would be needed before fully endorsing its widespread use.     

Evaluation of the bactericidal effect of Er,Cr:YSGG, and Nd:YAG lasers in experimentally infected root canals

The aim of this study was to evaluate the bactericidal effect of the Er,Cr:YSGG laser and the Nd:YAG laser in experimentally infected root canals. Sixty single-rooted teeth with straight canals were selected. After preparation and sterilization, the specimens were inoculated with Enterococcus faecalis for 3 weeks. After irradiation by lasers, the number of bacteria in each root canal was examined. The Er,Cr:YSGG laser gave a reduction of 77% after irradiation at 1 W and 96% at 1.5 W, but there was no significant difference (p > 0.05). The Nd:YAG laser gave a reduction of 97% at 1 W and 98% at 1.5 W, and there was no significant difference (p > 0.05). Compared with the Er,Cr:YSGG laser, the Nd:YAG laser is more effective (p < 0.05). In conclusion, both lasers systems have a significant bactericidal effect in infected root canals, and the Nd:YAG laser is more effective than the Er,Cr:YSGG laser.     

应用水激光和超声进行根管消毒的效果评价

目的:比较水激光和超声在根管消毒方面的杀菌效果,为临床应用提供理论依据.方法:选择慢性根尖周炎患者60例,随机均分为3组,分别采用常规机械预备和冲洗(对照组)、常规机械预备后用水激光消毒处理(水激光组)、常规机械预备后超声荡洗根管(超声组).用纸尖法提取根管根尖1/3的样本,用BHI培养液10倍系列稀释,分别取50 μ.L接种于BHI血琼脂平板培养基中,37℃厌氧(80％ N2,10％ H2和10％ CO2)培养24h后计数菌落.应用SPSS19.0软件包进行单因素方差分析,比较3组病例根管预备前、后的细菌数量变化,评价三者的根管消毒效果.结果:3组在根管预备前的细菌数量无显著差异,根管预备后3组的细菌数量均有明显减少,具有显著差异.水激光组和超声组预备后的细菌数量减少显著大于对照组(P＜0.05),水激光组和超声组之间无显著差异(P＞0.05).结论:经根管预备后根管内的细菌数量明显减少,应用水激光或超声后细菌减少更明显,应用水激光或超声可以增加根管的消毒效果.     

Er，Cr：YSGG激光在慢性牙周炎非手术治疗中的应用

目的：探讨超声龈下刮治结合Er,Cr：YSGG激光治疗慢性牙周炎的临床效果。方法纳入12名慢性牙周炎患者,超声龈上洁治后2周进行基线检查,采用分口设计,四个象限随机分组。实验组在超声龈下刮治的基础上,激光照射1次或3次;对照组在超声龈下刮治基础上进行手工根面平整。治疗结束后分别记录每象限治疗用时,患者对每象限治疗时的舒适程度视觉模拟评分。在基线、治疗后6周及12周检查牙周临床指标,包括菌斑指数、牙龈出血指数、探诊深度及临床附着丧失。结果实验组和对照组各项临床指标均有显著改善,且临床疗效相当。和传统手工根面平整术比较,激光照射治疗所需时间较长,舒适度更加;和激光照射1次比较,照射3次并无明显优势。结论超声龈下刮治结合Er,Cr：YSGG激光照射治疗慢性牙周炎的临床疗效良好,且激光照射在治疗过程中更为舒适,超声龈下刮治结合Er,Cr：YSGG激光照射1次可作为牙周炎非手术治疗可选方法之一。