目的 观察护牙素对龈下刮治后牙本质敏感患者牙周指数的影响,探讨脱敏治疗对口腔卫生维护和疗效维护的影响.方法 将116例(464颗患牙)龈下刮治所致的牙本质敏感患者随机分为治疗组(60例,240颗患牙)和对照组(56例,224颗患牙),治疗组采用GC护牙素(日本株式会社而至齿科)进行脱敏治疗,对照组不进行任何脱敏治疗.观察治疗后1周、1个月的牙石指数(CI)和软垢指数(DI)的变化.结果 治疗后1周,对照组CI和DI值均较治疗组显著升高(P＜0.05),治疗后1个月,对照组CI和DI值均较治疗组显著升高(P＜0.05).结论 经护牙素脱敏治疗的牙周病患者更容易保持相对健康的牙周指数.

目的 评价护牙素治疗龈下刮治所致牙本质敏感的临床疗效,并探讨其作用机制.方法 将116例(464颗患牙)龈下刮治所致的牙本质敏感患者随机分为治疗组(60例,240颗患牙)和对照组(56例,224颗患牙),治疗组采用GC护牙素进行脱敏治疗,对照组不进行任何脱敏治疗.观察治疗后1周、1个月的VAS评分、CI值及DI值.结果 治疗后1周,治疗组的VAS值显著降低,与对照组比较,差异具有统计学意义(P<0.05).治疗后1个月,治疗组与对照组VAS值均降低,二者比较差异统计学意义(P>0.05).结论 GC护牙素在龈下刮治后早期可以起到缓解牙本质敏感的作用.

目的：研究鼻咽癌患者初次放疗后牙齿敏感应用护牙素脱敏的临床分析。方法选择在我院口腔科门诊就诊的48例鼻咽癌初次放射治疗并有牙齿敏感的患者﹐随机分为两组﹕实验组为应用护牙素护理+口腔卫生宣教强化﹐采用护牙素药池﹐于放疗第7d开始使用﹐用药时间从当天晚8点持续到第2d早上6点﹐连续使用14d。对照组为使用Gluma脱敏剂+口腔卫生宣教强化。对牙体敏感区清洁后﹐吹干﹐用小棉球取适量Gluma脱敏剂反复擦2~3次﹐保持30~60s﹐吹干至牙面液膜消失无光泽为止。2次/w﹐连续用2w﹐1个月后复查。结果两组患者的疗效比较﹐经Ridit分析差别有统计学意义(=2.138﹐<0.05)﹐说明验实组的疗效优于对照组。结论显示GC护牙素疗效显著﹐无毒副作用﹐操作简便﹐值得临床推广。

目的:评价短期应用100 g/L酪蛋白磷酸多肽钙磷复合体(Tooth Mousse护牙素)对鼻咽癌放射性龋预防的效果.方法:选择鼻咽癌初次放疗患者230例,口腔综合防治后随机分为4个实验组和1个对照组(n=46).对照组不用护牙素药池;实验1、2组用护牙素药池每天10 h各持续7、14 d;实验3、4组用护牙素药池每天20h以上各持续7、14 d.统计分析各实验组与对照组放疗前后患龋率和龋失补牙面数、牙髓/根尖周炎、残根的发生率等.结果:放疗前,各组患龋率、1年后新患龋率和龋失补牙面数、牙髓/根尖周炎、残根比较无统计学差异(P＞0.05),放疗后1年,各组以上指标均增加;4个实验组各项指标均低于放疗前(P＜0.05),各实验组间比较则无统计学差异(P＞0.05).结论:采用Tooth Mousse护牙素药池综合防治对放射性龋预防效果良好.

Objective To study the effect of oral health education in patients with nasopharyngeal carcinoma. Methods In our hospital, Department of Stomatology, 46 cases of radiation therapy in nasopharyngeal carcinoma (NPC) first patients, using self-designed oral health education knowledge questionnaire before and after the intervention of the investigation, the project survey were compared and analyzed. Results The awareness rate of radiotherapy for nasopharyngeal carcinoma (NPC) for the first time the oral hygiene of the patients is relatively low, can not meet the self care needs. After oral comprehensive prevention and oral health education and oral health awareness rate is improved, the statistical analysis: oral health education and health awareness than < 0.05, there is statistical significance than the rate. Conclusion Oral comprehensive prevention and health education can improve patients on oral health awareness and enhanced in patients with oral self maintenance ability, actively prevent radioactive caries occurrence and play a positive role in promoting the patient's quality of life and the survival.

Objective To evaluate the effect of complex of casein phosphopeptide and amorphous calcium phosphate(trade name: GC Tooth Mousse) application in enamel remineralization in vitro.Methods The in vitro premolars enamel blocks were made as specimens.After weighing, the specimens were soaked with 37.5%phosphor-ic acid for 2 minutes.At 5 min after the dry the specimens were weighed with a balance.Then after acid etching Tooth Mousse was used to coate the surface of acid etching tooth blocks for 30 min, immersed in distilled water for 1 hours, weighing at 5 min after the dry.According to different time the specimens were divided into the A~L of 12 groups.Statistical analysis was performed in the relation between the weight and the soaking time of each experimental group and the acid etching group.Results The statistical analysis showed there was no statistical difference between the groups after soaking and the control group in average weight ( P>0.05 ) , and between the experimental groups there was no a statistically significant difference ( P >0.05 ) .Conclusion The remineralization effect of Tooth Mousse is not straight up but a curve.

目的:评价短期应用10％酪蛋白磷酸多肽钙磷复合体(complex of casein phosphopeptide and amorphous calcium phosphate,CPP-ACP)(商品名:Tooth Mousse护牙素)离体牙釉质片再矿化的功效.方法:将正畸需要拔出的离体前磨牙1 5颗从冠根向一分为二,共30个实验样本,用自凝材料包埋于塑料圈内,根据扫描电镜样品的要求打磨抛光,抛光后的牙釉质面积为3mm×3mm.用数字随机表的方法随机分成4个实验组和1个对照组,每组6个.对照组是用37.5％磷酸酸蚀浸泡牙釉质2 min后不用护牙素浸泡,实验组均用37.5％磷酸酸蚀浸泡牙釉质2min后分别用Tooth Mousse护牙素涂搽牙面30 min,置于蒸馏水中浸泡.每组浸泡的时间逐步累加,A、B、C、D实验组分别浸泡时间为1、5、10、20h.每组待第2天在同一时间涂搽护牙素及在蒸馏水中浸泡的步骤同第1天,每天更换蒸馏水一次.每组连续作用5次.扫描电镜观察及用能谱检测钙的质量分数,统计分析各组釉柱再矿化与浸泡时间的关系.结果:A、B、C、D实验组釉质表面钙质量分数是(67.38±0.89、67.63±0.56、67.71±0.52、69.11±0.27)和酸蚀组65.74±0.74之间的差异有统计学意义(F=21.568,P=0.000＜0.01);用(Student-Newman-Keuls)法做多组间样本均数的两两统计比较分析,A、B、C组间差异均无统计学意义(P＞0.05);D实验组与A、B、C组间差异均有统计学意义(P＜0.05).结论:Tooth Mousse护牙素体外实验在蒸馏水环境中多次短时间每天20h浸泡离体牙釉质在减少脱矿和促进再矿化方面较实验其余3组作用显著.

目的：观察系统口腔护理干预模式对牙周病患者治疗效果及口腔保健行为的影响。方法120例牙周病病患者，随机分为观察组和对照组，每组60例。两组均给予牙周基础治疗，并给予常规口腔护理，观察组在上述基础上给予系统口腔护理干预，包括心理护理、口腔健康知识教育、指导控制菌斑的方法。分别于干预前后评价两组菌斑指数（PLI）、龈沟出血指数（SBI）、牙周袋深度（PD）的变化及患者口腔保健行为变化情况。结果干预后观察组PD、SBI、PLI明显低于对照组（ P＜0．01），掌握正确刷牙方法、每天刷牙3次、每次3 min、使用牙线比例高于对照组（P＜0．05）。结论系统口腔护理干预可以提高牙周病基础治疗效果和患者口腔保健意识。

目的评价局部麻醉法与牙髓失活法应用于慢性牙髓炎下颌第二磨牙牙髓摘除术的临床效果。方法龋源性慢性下颌第二磨牙牙髓炎患者197例(220颗患牙)按随机数字表法分为两组,麻醉组97例(108颗患牙)使用必兰局部浸润麻醉下行牙髓摘除术;失活组100例(112颗患牙)使用Depulpin牙髓失活剂后行牙髓摘除术。对比两组镇痛效果、根管治疗期间疼痛反应及治疗后1年的临床疗效。结果两组牙髓摘除术时镇痛效果比较,差异无统计学意义(P>0.05);麻醉组和失活组根管治疗期间急症发生率分别为10.10%和5.66%,两者比较差异无统计学意义(P>0.05);两组临床疗效比较,差异无统计学意义(P>0.05);失活组根管治疗期间疼痛反应发生率为28.30%,低于麻醉组的46.45%(P<0.05)。结论 Depulpin和必兰用于牙髓摘除术,均可获得较好的镇痛效果,但Depulpin能减轻根管治疗期间的疼痛反应。

Objective To investigate the therapeutic results on replantation of vertical fractured posterior teeth after bonding with glass ionomer cement and fixation with metal post.Methods A total of 40 vertical fractured posterior teeth were treated by extraction,root canal therapy,bonding with glass ionomer cement,fixation with metal post,replantation and coronal restoration.36 of the 40 posterior teeth were completely followed up for 2 years and evaluated.Results Among 36 vertical fractured posterior teeth observed,the the successful reserved rate of 6 months was 100.00%(36/36),one year was 88.89%(32/36),two years was 80.56%(29/36).There were statistical significant differences of the reserved rate in difference period after therapy.the reserved rate became lower with observation time became longer.Conclusion The therapeutic results were satisfied with a 2-year reserved rate.and the method can be worth of clinical application.

Objective: To investigate clinical efficacy of sonic endodontic instrument combined with nickel-titanium instrument on preparation of C-shaped root canals in mandibular second molars in elderly patients with chronic periapical periodontitis.Methods: 140 teeth of 133 patients were randomly assigned to two groups.Experimental group with 68 teeth were prepared by sonic endodontic instrument and Hero 642 rotary Nickel-titanium instrument;while control group with 72 teeth were prepared only by Hero 642 rotary Nickel-titanium instrument.Root canals were disinfected by calcium hydroxide paste and obturated by lateral condensation technique,followed by evaluation of the clinical efficacy.Results: The post-operative pain reaction in experimental group were lighter and less,The incidence of the total complications of root canal preparation were relatively higher in Group control.Conclusion: The combination of sonic and nickel-titanium endodontic instruments could be used effectively for the preparation of C-shaped root canals in mandibular second molars.Meanwhile,it might reduce the incidence of complications and post-operative pain reaction,and improve the quality of canal obturation.