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1.
目的研究发育期SD大鼠髁状突颈部骨折对下颌髁状突软骨细胞中上游刺激因子1(USF1)表达的影响。方法本研究于2011年7—9月在昆明医科大学口腔医学院研究所完成。选择4周龄雄性SD大鼠12只,其中6只大鼠用于制作下颌单侧髁状突颈部骨折动物模型,6只大鼠为对照。分别在术后1、3、5周时处死大鼠,取出骨折侧、骨折对侧以及空白对照的髁状突软骨。采用免疫组织化学方法检测髁状突软骨细胞中USF1表达情况。结果术后1周,骨折对侧空白对照组与骨折侧的USF1表达有显著性差异(P<0.01);术后3周,空白对照组与骨折侧USF1表达有显著性差异(P<0.01)。骨折侧术后3周、5周与术后1周USF1表达有显著性差异(P<0.01)。结论单侧髁状突颈部骨折引起应力变化,使患侧髁状突软骨细胞中USF1表达异常,进而影响髁状突的生长发育。  相似文献   

2.
目的研究盐酸米诺环素对脂多糖(LPS)作用下人牙周膜成纤维细胞(HPDLF)的白细胞介素-6(IL-6)mRNA表达的影响。方法本研究于2011年10月至2012年2月在井冈山大学医学院重点实验室进行。培养HPDLF并分为以下5组:对照组(未加药)、高剂量组(0.01g/LLPS+0.2班盐酸米诺环素)、低剂量组(0.0lg/LLPS+0.05g/L盐酸米诺环素)、中剂量组(0.01g/LLPS+0.1g/L盐酸米诺环素)、模型组(0.0lg/LLPS),每组均复种3孔。实时荧光定量PCR检测各组HPDLF中的IL-6mRNA表达情况。结果对照组、高剂量组、低剂量组、中剂量组、模型组的IL-6mRNA相对表达量分别为:0.61±0.08、0.62±0.10、0.88±0.17、0.49±0.21、1.88±0.07。模型组IL-6mRNA的相对表达量高于对照组、高剂量组、低剂量组、中剂量组,且差异有统计学意义(P〈0.01)。对照组及低、中、高剂量组的IL-6mRNA相对表达量两两比较,差异均无统计学意义(P〉0.05)。结论盐酸米诺环素能够降低LPS作用下HPDLF中的IL-6mRNA的表达,这可能是盐酸米诺环素治疗牙周炙的作用机制之一。  相似文献   

3.
??Objective    To analyze the influence of periodontal nonoperative therapy on function of masticatory muscles in generalized advanced aggressive periodontitis??GAgP??. Methods    Randomly select 30 subjects who have been diagnosed with GAgP in Department of Periodontics??Stomatological Hospital of China Medical University by cone-beam computed tomography??CBCT??from June 2013 to December 2014. According to the ratio of AB/AC??the height of alveolar bone ??AB??and teeth height??AC?????the patients were divided into group A ??15 cases??AB/AC value ≥ 50%??and group B??15 cases??AB/AC value < 50%??. The probing depth??PD??and the clinical attachment level??CAL??of subjects were recorded. Measure the changes of electromyographic value of temporal muscle and masseter muscle of GAgP patients before and after periodontal nonoperative therapy using surface electromyography??Bio EMG ??. Analyze the correlation of degree of inflammatory reaction with EMG value of masseter muscle in the intercuspal position??ICP??. Compare the electricity value change of temporalis muscle and masseter muscle before and after periodontal nonoperative therapy. Results           In ICP state??the electricity value of masseter muscle of group A ???69.22 ± 22.33??μV?? was greater than group B ???35.31 ± 13.15??μV??. There was statistical difference between the two groups??P < 0.05??. There was positive correlation between the electricity value of masseter muscle and the AB/AC value of posterior sextants in GAgP patients??r = 0.731??P = 0.002??. In ICP state??after the periodontal nonoperative therapy??the electricity value of masseter muscle and temporal muscle of GAgP patients had significant change. There was statistical difference compared with before treatment??P < 0.05??. Conclusion    In GAgP patients??the more alveolar bone defected??the less function of the masticatory muscles present. Periodontal nonoperative therapy can effectively improve the performence of masticatory muscles.  相似文献   

4.
??Objective    To investigate the influence of Porphyromonas gingivalis??Pg?? and Treponema denticola??Td?? in gingival crevicular fluid ??GCF?? of patients with aggressive periodantitis??AgP?? on organic acid. Methods    Forty cases of AgP and 40 healthy volunteers in our hospital were selected and GCF was collected. GCF in booth of same quadrant of patients was collected??and plaque index ??PLI????sampling location??probing depth??PD????sulcus beeding index??SBI?? and attachment loss??AL?? were recorded. CE was used to detect the concentration of organic acid??PCR was used to detect Pg and Td. The gray value of amplification entry stripe??which was detected positive??was given quantitative analysis??amplification target bars and brightness ratio showed the relative volune of target gene??which was PCR product quantity. Results    PLI??PD??AL??concentration of acid??Pg/Td detection rate and Pg/Td product quantity of AgP group were higher than those of healthy group ??P??0.05????Pg butyric acid concentration at positive detection point of AgP group was higher than that at negative detection point??P??0.05????organic acid concentration at Td positive detection point was higher than that at negative group??P??0.05??. Conclusion    Organic acid concentration in GCF of AgP patients shows product quantity of Pg and Td??which plays a certain guiding role in organic acid concentration of AgP.  相似文献   

5.
目的比较不同垂直骨面型的颅底形态,探索其规律性。方法选取2008年10月至2010年12月在中国医科大学附属口腔医院正畸科就诊的错牙拿患者69例,分为高角型22例、均角型24例、低角型23例。对所有患者x线头颅侧位片进行颅底相关项目测量。结果不同垂直骨面型的颅底角、蝶鞍角、颅基底角从低角型到均角型再到高角型依次增大;后颅底平面角、颅底的有效垂直生长高度从低角型到均角型再到高角型依次减小。高角型患者的后颅底长度最短,颅前基底角最大;而均角型和低角型间差异无统计学意义(P〉0.05)。结论不同垂直骨面型的颅底结构呈现一定的规律性,颅底的生长参与不同垂直骨面型的形成,尤其后颅底的变化对垂直骨面型的形成贡献更大..  相似文献   

6.
目的探讨口腔功能性矫治器治疗青春期下颌后缩伴阻塞性睡眠呼吸暂停低通气综合征(OSAHS)的远期疗效。方法选择2003年4月至2005年10月焦作市第二人民医院收治的下颌发育后缩合并OSAHS的患儿19例,戴用口腔功能性矫治器进行治疗,分别在治疗前、治疗结束时、治疗后5年拍摄X线头颅侧位片和进行多导睡眠监测,比较睡眠呼吸暂停低通气指数(AHI)、夜间最低血氧饱和度(SaO2)和X线头影测量指标的变化。结果治疗后患儿均诉鼾声减小或消失,未见睡眠中憋气,日间困倦缓解或消失。治疗结束时SNA角无明显改善,SNB角明显增大,LL—H线距明显减小,且SNA角与SNB角相差较大的OSAHS患儿治疗效果更好;治疗结束后追踪随访5年发现,SNA角、SNB角、LL—H线距、夜间最低SaO2及AHI均无明显改变。结论口腔功能性矫治器治疗青春期下颌后缩伴OSAHS远期疗效稳定,具有无创伤、安全、痛苦小、效果稳定的优点。  相似文献   

7.
目的 评价不同剂型EDTA对弯曲根管作用的疗效.方法 选择2010年7-12月在中国医科大学口腔医学院综合急诊科就诊的480例急性牙髓炎患者的480颗后牙,包括具有轻度弯曲(simple,S),中度弯曲(medium,M),重度弯曲(difficult,D)3种弯曲根管的上、下颌前磨牙及上、下颌磨牙各40颗,每颗患牙选取1个根管作为研究对象,并将其随机分为试验组和对照组,分别采用凝胶型EDTA和液体EDTA作为根管润滑剂,1%NaClO作为冲洗剂,结合ProTaper冠向深入法预备根管,观察各组根管预备时间以及根管预备后疼痛反应.结果 (1)根管预备时间:上颌前磨牙、磨牙的M、D弯曲根管和下颌前磨牙、磨牙的S弯曲根管试验组和对照组差异有统计学意义(P<0.05);上颌前磨牙、磨牙的S弯曲根管和下颌前磨牙、磨牙的M、D弯曲根管试验组和对照组差异无统计学意义(P>0.05).(2)根管预备后疼痛发生情况:上颌磨牙和下颌前磨牙的D弯曲根管以及下颌磨牙的M、D弯曲根管试验组和对照组差异有统计学意义(P<0.05);上颌前磨牙的S、M、D弯曲根管与上颌磨牙和下颌前磨牙的S、M弯曲根管以及下颌磨牙的S弯曲根管试验组和对照组差异均无统计学意义(P>0.05).结论 凝胶型EDTA应用于弯曲根管较液体EDTA根管润滑效果好,术后反应轻.  相似文献   

8.
目的    通过建立下颌后缩三维有限元模型,探讨并分析Forsus矫治器在不同作用力值和不同作用方向对上、下颌骨位移及应力分布的影响。方法    2008年6月于西安交通大学口腔医院正畸科选取1例13岁骨性Ⅱ类下颌后缩女性患者,采用Mimics和Ansys软件结合CT技术建立该患者颌面部骨骼的三维有限元模型,模拟Forsus矫治器的作用方式在模型上进行两种加载,分别为大小不同的3组力值和方向不同的3组力值,观察颌骨和牙齿上标志点的三向位移及应力分布情况。结果    两种加载方式的3个不同加力组之间的位移差异均有统计学意义。结论    生长发育高峰期过后的患者可适当增加Forsus矫治器力值;高角、长面型患者应尽量减小Forsus矫治器作用角度。  相似文献   

9.
目的研究牙周模牵张成骨速移动牙齿时牙髓组织中肿瘤坏死因子α(TNF-α)含量变化情况。方法 2009年12月至2010年2月选用山东大学实验动物中心提供健康杂种犬18只,随机分为9组,每组2只。以单根的第一前磨牙作为移动牙,通过牙周膜牵张成骨快速移动牙齿,分别在加力2(A1组)、4(A2组)周及各自加力后保持1(B1、B2组)、2(C1、C2组)、4(D1、D2、E组,其中E组为对照组,不加力)周时,取出牙髓组织标本,利用酶联免疫吸附试验检测牙髓组织中TNF-α含量。结果 TNF-α含量在牵张加力2、4周后明显升高,停止牵张加力后第1、2周TNF-α含量明显降低,第3、4周TNF-α含量稳定在一定水平上,其含量低于对照组。结论牙槽骨牵张2周及4周快速移动牙齿时,牙髓内TNF-α含量均可在牵张后2周内基本恢复正常,而牵张后7~14d则为其转变的关键时期。  相似文献   

10.
目的 比较微小RNA(miRNAs)在人牙髓干细胞(dental pulp stem cells, DPSCs)及非DPSCs中的表达差异,探讨其在维持DPSCs干性状态中的作用。方法 本研究于2013年1—10月在福建医科大学附属口腔医院完成。 原代培养人牙髓细胞,利用结合了STRO-1特异性抗体的免疫磁珠分选获得DPSCs,并进行成牙本质样细胞的诱导分化,检测碱性磷酸酶(ALP)、骨钙素(OC)值以及进行von Kossa染色,鉴定其分化能力。采用miRNA基因芯片技术,检测DPSCs和非DPSCs中miRNAs的表达,筛选出差异表达的miRNAs。结果 与非DPSCs相比,DPSCs中表达上调超过2倍的miRNAs有11个,表达下调超过2倍的miRNAs有3个。结论 miRNAs表达谱的变化可能与DPSCs干性状态的维持相关。  相似文献   

11.
目的比较全酸蚀和自酸蚀黏结系统对牙颈部楔状缺损形成的黏结界面超微结构的影响。方法2006年9月至2007年1月在大连医科大学附属第一医院口腔科选用6颗新鲜拔除的无龋人上颌前磨牙在颊侧颈部制备3mm×3mm×2mm人造楔状缺损。使用全酸蚀单瓶系统(single bond,SB),自酸蚀一步黏结系统(adper prompl-pop,AP)处理牙面,以罗丹明B异硫氰酸盐(rhodamine B isothiocyanate)为荧光素,使用激光扫描共聚焦显微镜(CLSM)观察比较黏结界面的微观结构。结果在全酸蚀和自酸蚀黏结剂形成的黏结界面上,两种黏结剂均有良好的渗透,没有发生黏结材料与黏结界面分离的情况。SB产生的树脂突较长、混合层较厚,均大于黏结剂AP。结论SB与AP作用同类型的牙本质上,AP比SB形成的混合层薄,树脂突短。  相似文献   

12.
目的 探讨面部不对称畸形患者的三维仿真头模术前设计对其术中上颌骨截骨的指导意义。方法 选择中国医科大学口腔医学院口腔颌面外科2007年1月至2009年1月收治的18例面部不对称畸形患者。所有患者畸形明显并且均伴有竖直方向牙合平面的倾斜。术前制作三维头模,精确测量之后在模型上模拟截断上颌骨,评价截骨的位置及截骨量,再将得到的数据应用到手术中行上颌骨截骨,术后6个月评价手术效果。结果 18例患者手术顺利,无严重并发症出现。所有患者术后效果满意,牙合平面均水平,面部对称。结论 通过三维头模模拟截骨得出的数据可用于精确指导术中的截骨,对于术中上颌骨截骨的位置及截骨量的确定具有重要的指导意义。  相似文献   

13.
??Abstract?? Objective To explore the relationship between periodontitis and chronic obstructive pulmonary disease by analyzing the relationship between FEV1% and periodontal index. Methods Totally 160 cases of stable COPD and 106 cases of acute exacerbation of COPD were collected. Check and record simplified oral hygiene index??sulcus bleeding index??probing depth and clinical attachment loss of all six index teeth?? use pulmonary function to test and record the FEV1%?? and do oral survey for all subjects. Results ??1??The smoking rate of AE-COPD group was 47.2%?? which was higher than that of the stable COPD group ??P < 0.01???? ??2??SBI??PD and CAL of AE-COPD group were significantly higher than that of stable COPD group ??P < 0.01??????3??OHI-S??SBI??PD and CAL of AE-COPD group showed a strong correlation with FEV1% ??r = -0.309??P < 0.01??r = -0.333??P < 0.01??r = -0.395??P < 0.01??r = -0.702??P < 0.01????CAL of stable COPD group was correlated with FEV1% ??r = -0.657??P < 0.01??. Conclusion ??1??Smoking is a very important risk factor for periodontitis and COPD.??2??The degree of periodontal inflammation in AE-COPD patients aggravates with pulmonary function abating?? which suggests there is a correlation between periodontitis and COPD.  相似文献   

14.
??Abstract??Objective To discuss the effect of PG0839 of Porphyromonas gingivalis ??P.gingivalis?? on inflammatory cytokine expression?? including interleukin 1β and interleukin 6?? in liver tissues and serum of mice. Methods The study was completed in the central laboratory of School of Stomatology?? China Medical University from Jun. 2013 to Nov. 2013. Group 1 was challenged with P.gingivalis W83 strain at the doses of 1×109 CFU/ml cells. Group 2 was challenged with PG0839-defective mutant at the same dose. All mice in both groups were challenged with subcutaneous injections of 0.1 mL of bacterial suspension at two sites on the dorsal surface. Control group was challenged with 0.1 mL sterile PBS only. After 5 days?? all mice were sacrificed?? and the liver and serum were stored. The levels of IL-1β and IL-6 in mice liver tissue and serum were detected using ELISA. Analyze all result data with statistics software SPSS 13.0. Results IL-1β expression in the liver tissue and serum of mice was lower in group 2 than in group 1 ??P < 0 05??. Compared with the control group?? IL-1β and IL-6 expressions in the liver tissue and serum of mice were significantly increased in group 1 and 2 ??P < 0 05??. Conclusion These results suggest that PG0839 may participate in the process of P.gingivalis inducing systemic inflammation in mice.  相似文献   

15.
??Objective    To study the effect of different concentrations of ozone water on the expression of IL-6 in periodontal tissues of rat with periodontitis. Methods    A total of 70 male Wistar rats weighing??200 ± 20??g were chosen??randomly select five as normal control group??executed by cervical dislocation method????and the rest of the rats were made model of periodontitis. When the model was established??five periodontitis rats were randomly selected as no-treatment group??executed by cervical dislocation method??. The rest of periodontitis rats were randomly divided into ozone water treatment group and control treatment group for periodontal pocket rinsing. The general conditions and pathological changes of the periodontal tissues were observed. Immunohistochemical staining was conducted to determine the expression of IL-6 in the periodontal tissues. Results    The level of IL-6 in periodontal tissues of rats of no-treatment group was much higher than that in the normal control group??P < 0.05??. The level of IL-6 in the treatment groups was much lower than that in the no-treatment group??P < 0.05??. In each period of rinsing??at 15mg/L of ozone water treatment group??the expression of IL-6 in periodontal tissue was lower than that in other concentration groups ??5mg/L??10mg/L????P < 0.05????but there was no significant difference compared with the control treatment group. Conclusion    The ozone water can reduce the IL-6 level in periodontal tissues in rats and the effect is more obvious in concentration of 15mg/L??which has certain treatment effect on periodontitis.  相似文献   

16.
目的探讨拔牙和非拔牙矫治对安氏Ⅱ1错患者下颌第三磨牙的影响。方法随机选择2005年1月至2007年12月云南省第二人民医院口腔正畸门诊收治的安氏Ⅱ1错患者27例,分为拔牙组15例(矫治拔除4个双尖牙)和非拔牙组12例(保存全牙列矫治),均采用Edgwise矫治技术治疗。对患者治疗完成时的全颌曲面断层片进行各指标测量及比较分析。结果治疗结束后,拔牙组和非拔牙组下颌第三磨牙萌出间隙(BX)均较治疗前分别平均增加2.6mm和0.71mm,组间比较差异有统计学意义(P<0.05);拔牙组下颌第三磨牙近中倾斜角(θ)平均减小4.36°,而非拔牙组则平均增大0.41°,组间比较差异有统计学意义(P<0.01);拔牙组BX与下颌第三磨牙牙冠宽度之比(BX/MD)虽有明显变化,但与非拔牙组比较差异无统计学意义(P>0.05)。结论对于生长期安氏Ⅱ1错患者,拔牙矫治更有利于下颌第三磨牙的正常萌出。  相似文献   

17.
目的研究安氏Ⅱ1错矫治前后咬合功能状况的变化,借以评价正畸治疗对咬合接触变化的影响,并结合国内外学者的相关研究数据,对比分析本研究对安氏Ⅱ1错咬合稳定重建的可靠程度及对临床的指导意义。方法选取2008-2012年来济南市口腔医院正畸科就诊的安氏Ⅱ1错患者30例,用T-scanⅡ数字化咬合分析系统记录患者矫治前后最大牙尖交错位的力总值(TOF)、力不对称指数(AOF)、力中心点位置(COF)、力中心点的最大位移(MMCOF)、闭合时间(TO),并进行统计分析。结果安氏Ⅱ1错患者矫治后TOF高于矫治前(P<0.01);矫治后COF距上颌中线的距离与矫治前相比减小(P<0.01);矫治后AOF、MMCOF、TO均低于矫治前(P<0.01)。结论正畸治疗能够改善安氏Ⅱ1错患者的力水平及平衡性;T-scanⅡ数字化咬合分析系统能够客观、真实、准确的显示咬合接触状态,其测量结果可作为临床评价的指标。  相似文献   

18.
目的探讨成釉细胞瘤(AB)的发病和复发机制。方法对2004—2006年中国医科大学口腔医学院和沈阳市口腔医院病理科存档的34例病理诊断为AB的蜡块标本(滤泡型AB18例,丛状型AB10例,壁性AB6例)及口腔正常黏膜蜡块标本14例,采用SABC法免疫组化检测BMP-2的表达。胞浆出现棕黄色颗粒为阳性着色。用改良打分法半定量分析BMP-2表达。采用秩和检验比较。结果AB与正常口腔黏膜的BMP-2表达差异具有统计学意义。滤泡型AB组、丛状型AB组和壁性AB组间差异无统计学意义。结论BMP-2在AB中有阳性表达。在不同病理类型的AB中,BMP-2的表达差异无统计学意义。BMP-2在AB的发生、发展中起重要作用。  相似文献   

19.
研究青年正常(牙合)者前伸(牙合)颌位和侧(牙合)颌位的(牙合)接触情况.方法 2010年9月至2011年4月按纳入标准,从福建医科大学1350名本科生中筛选162名正常(牙合)志愿者,男55名,女107名,年龄18~23岁.用Bausch咬合膜拉出法检测前伸(牙合)及侧(牙合)颌位的(牙合)接触牙位,分别归纳、统计两种颌位的(牙合)接触情况分布.结果 前伸(牙合)颌位:前牙接触、后牙无接触者111人(68.52%),前、后牙均有接触者49人(30.25%),后牙接触、前牙无接触者2人(1.23%).侧(牙合)颌位:工作侧接触、非工作侧无接触241人(74.38%),工作侧、非工作侧均有接触75例(23.15%),非工作侧接触、工作侧无接触8人(2.47%),其中双侧一致者142人(87.65%),双侧不一致者20人(12.35%).结论 在正常(牙合)人群,前伸(牙合)颌位时,可能出现仅有前牙接触和前、后牙均有接触及仅有后牙接触的(牙合)接触情况,其中仅有前牙接触的(牙合)接触情况最常见;侧(牙合)颌位时,可能出现仅有工作侧接触和工作侧、非工作侧均有接触及仅有非工作侧接触的(牙合)接触情况,其中仅有工作侧接触最常见.在侧(牙合)颌位,大部分人为双侧一致.  相似文献   

20.
目的探讨肌动蛋白聚合蛋白-1(Fascin-1)在人涎腺腺样囊性癌(SACC)中的表达及临床意义。方法选择2007年11月至2009年12月哈尔滨医科大学附属口腔医院口腔颌面外科手术切除涎腺组织的患者63例,其中SACC患者46例,涎腺正常患者17例。应用免疫组化法检测SACC和正常涎腺组织中Fascin-1的表达水平,比较并分析其与患者其他因素的相关性。结果 Fascin-1在SACC组织中的表达率明显高于正常涎腺组织(P<0.01)。Fascin-1在SACC组织中的表达,与患者的年龄、性别、部位、肿瘤大小和病理类型无关(P>0.05)。临床分期Ⅲ~Ⅳ期的癌组织Fascin-1表达阳性率明显高于Ⅰ~Ⅱ期(P<0.05),有区域淋巴结转移患者Fascin-1表达阳性率明显高于无区域淋巴结转移者(P<0.05)。结论 Fascin-1表达与SACC患者的临床分期和淋巴结转移相关。  相似文献   

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