YAG激光治疗牙本质敏感症的疗效观察

目的：观察YAG激光治疗牙本质敏感症的疗效。方法：随机选择牙本质敏感症88例,共100对左右对称的同名牙,一侧采用激光脱敏,另侧采用药物脱敏,比较他们的疗效。结果：YAG激光治疗牙本质敏感症疗效明显超越药物脱敏,而且见效快,疗效维持时间长。结论：激光脱敏是目前较为理想的牙本质敏感症的治疗方法。     

脱敏剂和脉冲激光治疗牙齿敏感症临床观察

牙本质敏感症是许多牙体疾病所共有的症状 ,以牙周萎缩引起的根面暴露、牙颈部楔状缺损、咬合面重度磨耗最为常见 ,另外还可见于釉质发育不全、活动义齿摩擦、基牙预备后及牙齿洁治术后等。随着许多新材料、新设备的不断应用 ,治疗方法亦呈多样化 ,治疗效果明显提高。本实验分别应用脉冲Ｎｄ :ＹＡＧ激光和Ｇｌｕｍａ脱敏剂治疗牙本质敏感症 ,取得良好疗效 ,报告如下。材料和方法1.材料1.1　Ｇｌｕｍａ脱敏剂 (贺利氏—上海齿科有限公司 )。1.2　脉冲Ｎｄ :ＹＡＧ激光机 (美国ＰｕｌｓｅＭａｓｔｅｒ 60 0型 ) ,波长1.0 6μｍ ,脉冲频率 10…     

两种参数设置的激光联合氟化物治疗牙本质敏感症的临床评价

目的比较两种不同参数设置的激光联合氟化物治疗牙本质敏感症的临床效果。方法 60例患者,270颗面磨耗导致牙本质敏感症的患牙,随机分为:Nd:YAG激光治疗(A组)、Er:YAG激光治疗(B组)和多乐氟组(C组),根据激光输出功率不同分为低功率组(A1、A2、B1、B2组),高功率组(A3、A4、B3、B4组),其中A2,A4、B2,B4组为激光与多乐氟联用。采用数字化疼痛评判法(visual analogue scale, VAS)记录其在治疗前、治疗后5 min、1周、1个月、3个月和6个月的牙齿敏感程度,并进行统计学分析。结果各实验组治疗前VAS评分差异无统计学意义;A4组疼痛降低86.9%,明显优于其他实验组(P<0.01);A2、A4组(疼痛分别降低76.9%、86.9%)疗效优于A1、A3组(疼痛分别降低66.6%、73.7%),A3疗效优于A1组(P<0.01);Er:YAG激光治疗组是否联合氟化物治疗或增加输出功率对疗效无明显影响(P>0.05);A1、B1组疼痛降低(66.6%、62%)差异无统计学意义(P>0.05),A3、B3组仅在即刻(70...     

奥敏清牙齿脱敏剂治疗婴幼儿牙浅龋的疗效观察

目的:评价奥敏清牙齿脱敏剂治疗婴幼儿浅龋的疗效。方法:纳入患儿110名共410颗浅龋牙,分为3组。其中A组采用奥敏清牙齿脱敏剂,B组采用普通含氟牙膏,C组采用普通不含氟牙膏。测量治疗前、治疗2、4、6周及6个月后浅龋的激光荧光值,并对治疗前后激光荧光值进行比较。结果:治疗2周后,A组、B组、C组3组患牙治疗前后比较差异没有显著性(P>0.05)。4周后A组荧光值下降(P<0.01),A组荧光值低于B组和C组(P<0.05),B组与C组差异无显著性(P>0.05)。6周和6月后,A组荧光值均低于B组和C组(P<0.01)。结论:奥敏清牙齿脱敏剂治疗婴幼儿牙浅龋有较好疗效。     

Systemp脱敏剂治疗牙本质敏感症的疗效观察

目的 :观察Systemp脱敏剂治疗牙本质敏感症的临床疗效。 方法 :采用量化观察指标 ,对治疗前后不同时期的观察结果进行统计学分析。结果 :治疗后不同时期、不同牙位牙本质敏感程度均较治疗前明显降低。结论 :Systemp脱敏剂是一种较理想的治疗牙本质敏感症药物     

MS Coat脱敏剂治疗牙本质敏感症的临床效果

目的探讨MS Coat脱敏剂治疗牙本质敏感症的临床效果。方法牙本质敏感症患者57例96颗患牙分为3组,MSCoat脱敏组34颗、极固宁脱敏组32颗,75%氟化钠甘油组30颗。对比治疗后即刻、治疗后3个月的临床疗效。结果治疗后即刻,MSCoat脱敏组、极固宁脱敏组、75%氟化钠甘油组的有效率分别为94.12%、93.75%、70.00%;治疗后3个月,3组有效率分别为88.24%、87.50%、60.00%。治疗后即刻及治疗后3个月比较,MSCoat脱敏组与极固宁脱敏组疗效差异均无统计学意义,而与75%氟化钠甘油组差异有统计学意义。结论 MSCoat治疗牙本质敏感症确切有效。     

Gluma脱敏剂治疗牙齿敏感症的疗效观察

了解Ｇｌｕｍａ脱敏剂治疗牙齿敏感症的效果。方法 分别采用氟化钠甘油和Ｇｌｕｍａ脱敏剂治疗８０例４３２个患牙并进行了疗效对比。结果 Ｇｌｕｍａ脱敏剂疗效明显高于氟化钠。结论Ｇｌｕｍａ脱敏剂能更有效地用于牙齿敏感症患牙的治疗。     

Gluma脱敏剂治疗牙齿敏感症的疗效观察

目的了解Gluma脱敏剂治疗牙齿敏感症的效果。方法分别采用氟化钠甘油和Gluma脱敏剂治疗80例432个患牙并进行疗效对比。结果Gluma脱敏剂疗效明显高于氟化钠。结论Gluma脱敏剂能更有效地用于牙齿敏感症患牙的治疗。     

中药脱敏剂用于治疗牙本质过敏的效果比较观察

目的：观察研究中药脱敏剂用于治疗牙本质过敏症的临床疗效。方法：选取牙本质过敏的患者164例,随机分为研究组82例（患牙196颗）,对照组82例（患牙196颗）,分别使用中药脱敏剂和氟化钠甘油进行治疗。观察两组患者在治疗后即刻、3个月后、6个月后的疗效,并进行统计学分析。结果：中药脱敏剂组的疗效优于对照组,有显著性差异（P〈0.05）。结论：中药脱敏剂操作方便、高效,是适合临床应用的脱敏剂。     

脉冲Nd:YAG激光促进氟保护漆治疗牙齿敏感症临床观察

目的　观察脉冲Nd :YAG激光促进氟保护漆治疗牙齿敏感症的临床疗效。方法　用计算机程序控制脉冲Nd :YAG激光照射经涂一层氟保护漆的牙齿敏感症患牙 ,并分别与单纯涂一层氟保护漆或单纯脉冲Nd :YAG激光照射的疗效相比较。结果　涂氟保护漆加脉冲Nd :YAG激光照射治疗牙齿敏感症优于单纯涂保护漆或单纯脉冲Nd :YAG激光照射 ,疗效有显著性差异 (P <0 .0 5 )。结论　涂氟保护漆和脉冲Nd :YAG激光照射的联合应用是一种治疗牙齿敏感症较为有效的手段     

脉冲Nd:YAG激光结合氟化钠对人牙本质、牙骨质人工龋的影响

目的 :探讨脉冲Nd :YAG激光结合氟化钠对离体人牙牙本质、牙骨质人工龋的影响。方法 :将 2 0个健康离体人牙分别制成 2 0个牙本质和牙骨质标本。偏光显微镜观察激光加氟化钠组、激光组、氟化钠组和空白组 (不处理 )人工致龋实验后 ,牙本质、牙骨质标本纵面人工龋形态 ,并测量龋损深度。结果 :1)人工龋形态 :在牙本质和牙骨质标本中 ,激光加氟化钠组表层致密 ,脱矿区比空白组、激光组和氟化钠组浅。 2 )人工龋深度 :在牙本质和牙骨质标本中 ,激光加氟化钠组龋损深度不仅小于空白组 (P <0 .0 0 1) ,也小于激光组 [P <0 .0 0 1(牙本质 )、P <0 .0 1(牙骨质 ) ],氟化钠组〔P <0 .0 1(牙本质 )、P <0 .0 5 (牙骨质 )〕。结论 :脉冲Nd :YAG激光结合氟化钠能有效阻止离体人牙牙本质、牙骨质人工龋的形成和发展 ,促进早期龋再矿化 ,因而具有抗龋性能。     

国产Nd：YAG激光与氟化钠联合治疗牙本质过敏症疗效的Meta分析

目的通过Meta分析,科学评价国产钕钇铝石榴石（neodymium-doped yttrium aluminum garnet,Nd：YAG）激光与氟化钠联合应用治疗牙本质过敏症的临床疗效。方法检索中国期刊全文电子数据库2000~2010年发表的文献,收集Nd：YAG激光联合氟化钠与单纯Nd：YAG激光治疗牙本质过敏症疗效比较方面的临床研究资料。对纳入的文献进行质量评价、数据提取,并进行Meta分析。结果有7项研究共试验组516颗患牙（Nd：YAG激光与氟化钠联合治疗）,对照组490颗患牙（单纯Nd：YAG激光治疗）纳入Meta分析。Meta分析显示,Nd：YAG激光联合氟化钠治疗牙本质过敏症,3个月疗效的合并相对危险度（relative risk,RR）为1.26,95%可信区间为1.14~1.39;6个月疗效的合并RR为1.34,95%可信区间为1.14~1.58。结论 Nd：YAG激光联合氟化钠治疗牙本质过敏症的疗效优于单一激光治疗。     

Er：YAG激光和Nd：YAG激光联合应用治疗口腔均质型白斑

目的：探讨Er：YAG激光和Nd：YAG激光联合应用治疗口腔均质型白斑的临床疗效。方法：应用Er：YAG激光和Nd：YAG激光联合治疗均质型白斑31例,根据病损面积、患者的疼痛状况调整激光参数。治疗间隔时间1个月。结果：本组31例白斑治愈14例,显效14例,有效3例,治愈率45．1％,有效率90．3％。结论：Er：YAG激光和Nd：YAG激光联合应用治疗口腔均质型白斑临床疗效好,不良反应小,是治疗口腔均质型白斑的有效方法之一。     

半导体激光治疗牙本质过敏症疗效观察

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Er:YAG激光处理对牙本质与树脂粘结强度的影响

目的:探讨Er:YAG激光处理对牙本质表面性能及树脂粘结强度的影响。方法:选取30颗无龋坏、无修复体的人离体磨牙,用高速涡轮手机在流水冲洗下磨除釉质层。每个牙冠以髓腔为中心沿近远中向切开成颊/舌两部分,最终选取50个样件,按不同的表面处理方法随机分为5组(A~E组),每组10个样件。每组2个样件扫描电镜观察,其余8个样件分别在处理后的牙本质表面粘结光固化复合树脂,进行剪切强度测试。结果:C组最高,为(7.11±1.73) MPa,E组次之,E组与A、C、D组无统计学差异, B组较低,其中B组与C、D、E组均有统计学差异。扫描电镜观察:酸蚀组可见部分牙本质小管口开放,管径未增大;管周牙本质与管间牙本质界限不明显。激光+酸蚀组可见牙本质表面清沽,牙本质小管开放,周围白晕环绕。激光组可见牙本质表面清洁、粗糙,无玷污层,呈片状、蜂窝状外观,管周牙本质与管间牙本质界限清晰。结论:Er:YAG激光处理能增加牙本质与树脂的剪切粘结强度,但是合适的能量参数有待进一步研究。     

A comparison between the occluding effects of the Nd:YAG laser and the desensitising agent sensodyne on permeation through exposed dentinal tubules of endodontically treated teeth: an in vitro study

OBJECTIVE: Dentine hypersensitivity may occur due to loss of covering enamel and/or loss of cementum after gingival recession, resulting in exposure of cervical dentine and patency of dentinal tubules. The effect of thermally cooled pulsed neodymium:yttrium-aluminium-garnet (Nd:YAG) laser on the permeability and structural appearance of the root canal wall was investigated in vitro. The aim of this study was to compare the occluding effect of Nd:YAG laser with that of sensodyne on exposed dentine. MATERIAL AND METHODS: Forty freshly extracted human maxillary anterior teeth were collected at random. Root canal obturations were performed using master apical file no. 60 k-type for obturated teeth. All teeth were stored in 100% humidity at 37 degrees C for 48h to allow time for the sealer to set. Dentine of 35 teeth was exposed by removing the cementum, and the remaining five teeth represented a negative control group. Specimens were examined using stereomicroscopy to show the surface topography of the dentine substrate before and after treatment with Nd:YAG laser or sensodyne. RESULTS: A double-blind technique was used when taking measurements of ink penetration (in mm) for each group. Teeth treated by Nd:YAG laser showed the least ink penetration, followed by teeth treated by sensodyne. The positive control group demonstrated complete ink penetration and the negative control group showed no ink penetration. Stereomicroscopic examination of specimens treated with Nd:YAG laser showed deposition on the dentinal surface, and specimens treated with sensodyne showed partial deposition. Untreated specimens were free of deposition and the tubules remained patent. CONCLUSION: There is no significant difference in the occluding effect of Nd:YAG laser and sensodyne toothpaste. Both treatments have a promising effect on the reduction of permeation through exposed dentinal tubules. However, the occluding effect of Nd:YAG laser occurs within seconds whereas that of sensodyne takes at least 3 weeks.     

Desensitizing effects of an Er:YAG laser on hypersensitive dentine

AIM: The aim of the present study was to evaluate and compare the desensitizing effects of an Er:YAG laser (KEY II(R), KaVo, Germany) and Dentin Protector (Vivadent, Germany) on cervically exposed hypersensitive dentine. METHOD: A group of 30 patients showing a total of 104 contralateral pairs of hypersensitive and caries-free teeth was selected and randomly allocated in a split-mouth design to either (1) Er:YAG laser (80 mJ/pulse, 3 Hz), or (2) the application of Dentin Protector (polyurethane-isocyanate 22.5%; methylenechloride 77.5%) whereat one pair served as an untreated control in each patient. The degree of sensitivity to a thermal stimulus was determined qualitatively with an evaporative stimulus defined as a 3-s air blast at a distance of 2 mm from each site to be tested. A qualitative registration of the degree of discomfort was determined according to an arbitrary pain scale in 4 degrees. Recordings were assessed before treatment, immediately after, 1 week, 2 and 6 months after treatment by 1 blinded examiner. RESULTS: Both treatment forms resulted in significant improvements of discomfort immediately after and 1 week post treatment. After 2 months, the discomfort in the Dentin Protector(R) group increased up to 65% of the baseline score and even up to 90% after 6 months, whereas the effect of the laser remained at the same level that was achieved immediately after treatment. The differences immediately after, 1 week, 2 and 6 months post treatment between both groups were statistically high significant (p< or =0.001; respectively). Compared to the untreated control group, both treatment forms resulted in a significant reduction of discomfort at each follow-up examination. CONCLUSION: It was concluded that desensitizing of hypersensitive dentine with an Er:YAG laser is effective and the maintenance of the positive result was more prolonged than with Dentin Protector.     

Er：YAG激光备洞与树脂充填微渗漏的实验研究

目的：评价Er：YAG激光备洞对树脂充填材料边缘微渗漏的影响。方法：选择48颗年轻前磨牙随机分成4组,每组12颗牙,用Er：YAG激光或高速牙钻制备ⅴ类洞。对照组：牙钻备洞＋35%磷酸酸蚀;实验1组：激光备洞＋35%磷酸酸蚀;实验2组：激光备洞＋自酸蚀粘接;实验3组：单纯激光备洞。树脂充填,经冷热循环试验后染色24h,体视显微镜下观察微渗漏,统计学处理数据。结果：龈壁的染料渗透,4组间无统计学差异;壁的染料渗透,以实验3组较明显,与对照组、实验1、2组有统计学差异（P〈0.05）;各组内壁的染料渗透均比龈壁轻,但没有统计学差异。结论：Er：YAG激光备洞,35%磷酸酸蚀或自酸蚀粘接处理可减少洞壁与树脂充填边缘的微渗漏。