不同充填剂治疗乳牙根尖周炎的疗效对比研究

目的 探讨不同充填剂治疗乳牙根尖周炎的近远期临床疗效.方法 我院诊治的120颗患尖周炎的乳牙,随机将其分为A(使用干髓糊剂进行充填)、B(使用氢氧化钙碘仿糊剂进行充填)、C(使用抗生素糊剂进行根管充填)三个治疗组,治疗3个月、6个月、1年后,比较各组患牙的治疗成功率.结果 于治疗3个月、6个月和1年,与A组相比,B组和C组的成功率都明显升高,P<0.05,差异具有统计学意义;与B组相比,C组的成功率没有明显差异,P>0.05.近期失败的主要临床表现为存在不同程度的咬合痛、叩击痛,窦道没有消失;远期的主要临床表现为牙齿折断、充填物脱落、继发龋齿.结论 氢氧化钙碘仿糊剂和抗生素糊剂根管充填是目前治疗乳牙根尖周炎的相对比较有效方法,值得临床推广应用.     

复方南星止痛膏治疗骨伤科疾病的疗效观察

目的:观察复方南星止痛膏对骨伤科疾病患者的疗效。方法:对230例软组织损伤、骨关节炎、慢性劳损等骨伤疾病患者予以复方南星止痛膏外敷,隔日1次,共敷6次,疗程结束后,评价患者治疗前、后疼痛指标的变化和临床疗效。结果:复方南星止痛膏外敷可有效改善软组织损伤、骨关节炎、慢性劳损等骨伤患者的疼痛及功能活动。结论:复方南星止痛膏可有效改善骨伤患者的临床症状,值得临床推广运用。     

银尔通治疗口腔溃疡的疗效观察

目的观察银尔通治疗口腔溃疡的临床疗效及安全性。方法将88例口腔溃疡患儿随机平均分为治疗组与对照组。对照组以口服维生素B2及口腔涂蒙脱石散糊治疗,3～6次／d;治疗组应用银尔通治疗,喷口腔溃疡3～6次／d,两组均治疗一个疗程（3～6d）。观察疗效及安全性。结果应用银尔通治疗口腔溃疡,疗效明显优于对照组,差异有统计学意义（P〈0．01）。结论采用银尔通治疗口腔溃疡效果满意,值得临床应用。     

氢氧化钙糊剂、替硝唑粉联合牙胶根管充填的疗效观察

目的:观察氢氧化钙糊剂、替硝唑粉联合牙胶进行根管充填的疗效。方法:将126例患者的180颗患牙随机分为观察组与对根管照。组比,各较920组颗的牙充,对填照效组果采。用结根果管:观糊察剂组加与牙对胶照充组填的根超管充,观填察、欠组充将填氢、氧适化充填钙效糊果剂比和较替,硝差唑异粉无以统2计∶1学的意比义例(调P>配0好.0后5)加。牙但胶治充疗后填7d,观察组的急性反应发生率明显低于对照组,差异有统计学意义(P<0.05)。随访1年,观察组充填有效率明显高于对照组,差异有统计学意义(P<0.05)。观察组急慢性牙髓炎充填有效率、急慢性根尖周炎充填有效率分别明显高于对照组,差异均有统计学意义(P<0.05)。结论:氢氧化钙糊剂、替硝唑粉联合牙胶根管充填效果好,值得临床推广。     

Vitapex配合超声治疗窦道型根尖周炎的临床分析

目的观察Vitapex配合超声治疗窦道型根尖周炎的临床疗效。方法 Vitapex糊剂＋超声震荡治疗窦道型根尖周炎。治疗后2～3周、6个月、1年后回访,通过临床和X线检查评价其疗效。结果经治156例患牙,成功142例,2～6周窦道消失,6个月后经X线片检查可见尖周稀疏区减少或消失,成功率达91.03%,14例失败,6例出现牙根纵裂,后行牙半切术后部分保留,8例为多窦道患牙拔除。结论 Vitapex配合超声震荡法治疗窦道型根尖周炎疗效确切。     

Determination of trace vanadium(V) by adsorptive anodic stripping voltammetry on an acetylene black paste electrode in the presence of alizarin violet

A sensitive and simplified voltammetric method is developed for the determination of trace amounts of vanadium(V) by adsorptive anodic stripping voltammetry using an acetylene black (AB) paste electrode. The method is based on the preconcentration of the V(V)–alizarin violet (AV) complex at open circuit while stirring the solution for 90 s in 0.15 mol dm⁻³ hexamethylenetetraamine–hydrochloric acid buffer (pH 4.4), the adsorbed complex is then oxidized, producing a response with a peak potential of 564 mV when scanning linearly from 0 to 1000 mV. For voltammetric determination of V(V), the parameters influencing the peak current have been optimized. Under the selected conditions, the peak current and concentration of V(V) accorded with linear relationship in the range of 8.0 × 10⁻¹⁰ mol dm⁻³–1.0 × 10⁻⁷ mol dm⁻³ (c_AV = 2.0 × 10⁻⁶ mol dm⁻³) and 1.0 × 10⁻⁷ mol dm⁻³–8.0 × 10⁻⁶ mol dm⁻³ (c_AV = 2.0 × 10⁻⁵ mol dm⁻³), the detection limit (three times signal to noise) was estimated to be 6.0 × 10⁻¹⁰ mol dm⁻³ for 90 s accumulation. The relative standard deviation (RSD) is 1.9% and 2.3% for V(V) concentrations of 1.0 × 10⁻⁷ mol dm⁻³ and 1.0 × 10⁻⁸ mol dm⁻³ respectively. Finally, this proposed method was successfully applied to the determination of V(V) in natural water samples.     

MTA和Vitapex糊剂治疗成人慢性根尖周炎伴根尖孔闭合不全的疗效比较

目的：比较三氧化物多聚体（mineral trioxide aggregate,MTA）和Vitapex糊剂应用于成人慢性根尖周炎伴根尖闭合不全恒牙的临床疗效。方法：选取成人慢性根尖周炎伴根尖孔闭合不全的恒牙共38颗,随机分为2组,实验组在根管显微镜下用MTA严密封闭根尖开放部位,硬固后根管行热牙胶充填;对照组用Vitapex糊剂行根尖诱导成形,在根尖部有硬组织形成后行根管充填。两组术后均定期复查,评价临床效果及X线片结果。结果：经过2年的复查,实验组所有病例在治疗后均无临床不适症状,X线片显示患牙11颗根尖阴影完全消失,8颗明显缩小,1颗无变化,有效率95%。对照组2颗磨牙因冠根折拔除,8颗根尖有硬组织形成,8颗根尖无硬组织形成,有效率为44.4%,两者差异有统计学意义。结论：MTA治疗成人根尖孔未闭合恒牙是一种较理想的根尖诱导成形材料,短期临床疗效好,长期效果有待于进一步观察。     

康中医口腔膏在固定正畸早期保护牙龈的临床观察

目的观察康中医口腔膏在固定正畸治疗早期对牙龈炎的防治效果。方法将200名固定正畸患者随机分成实验组125例（使用康中医口腔膏刷牙）和对照组75例（常规口腔卫生保健措施）,对比观察正畸治疗前及治疗后1个月、2个月、3个月发生牙龈指数、菌斑指数改变的病例数。结果实验组1个月、2个月、3个月后,牙龈指数、菌斑指数改变病例数均明显少于对照组,差异均有显著性（P〈0.01）。结论康中医口腔膏对正畸早期牙龈炎症的发生有一定的预防效果。     

The treatment of oral aphthous ulceration or erosive lichen planus with topical clobetasol propionate in three preparations: a clinical and pilot study on 54 patients

BACKGROUND: This study evaluated the clinical use of a corticosteroid in three preparations (topical clobetasol propionate ointment, clobetasol propionate in an oral analgesic base, and clobetasol propionate in an adhesive denture paste). METHODS: Fifty-four patients (34 males and 20 females) with a history of vesiculo-ulcero-erosive oral lesions were selected: 24 with oral erosive lichen planus and 30 with aphthae. The subjects enrolled were randomly divided into three groups, each of 18 patients (10 with aphthae and 8 with lichen planus): the first was treated with topical clobetasol propionate ointment (0.05%) directly on the lesion(s) three times a day; the second with clobetasol propionate in an adhesive denture paste in equal amounts (1:1) two times a day; the third with clobetasol propionate in an oral analgesic base (Orabase-B) in equal amounts (1:1) two times a day. Each subject scored his or her symptoms daily from most severe (7) to none (0) by verbal assessments using a categorical scale. RESULTS: In all cases, the administration of the corticosteroid was effective in producing remission of symptoms in each group of patients. Significant differences (P<0.05) between groups were determined by the Kruskal-Wallis test. The Dunn test was used in order to detect which group differs from the others; clobetasol and adhesive denture paste correlated with an early remission of pain in lichen and apthous lesions. CONCLUSION: The results suggest that topical application of clobetasol in an adhesive denture paste is an effective drug for symptomatic oral vesiculo-erosive and/or ulcerative lesions.