幼儿期用改良Snyder法作龋蚀活跃性试验的研究分析

作者以改良Ｓｎｙｄｅｒ法研究分析４７４名２～５岁幼儿的患龋状况，结果显示改良Ｓｎｙｄｅｒ法２４、４８、７２小时的龋蚀活跃性结果与ｄｆｔ、ＣＳＩ、间均有非常显著的相关关系。文中并就龋蚀活跃性试验在幼儿期的应用意义及影响结果的因素作有分析。面对国内３亿儿童的严重患龋状况，改良Ｓｎｙｄｅｒ法在防龋工作中可起积极作用。     

采用ICDAS评价含氟牙膏用于不同Cariostat龋态值儿童的防龋效果

目的 采用ICDAS评价含氟牙膏用于3～4岁不同Cariostat龋态值儿童的防龋效果。方法 本研究为随机、对照、双盲设计、为期12个月以幼儿园为依托单位的临床试验研究。选择北京市密云区7所儿童在园刷牙的幼儿园。通过纳入排除标准选择进入试验的儿童,根据基线时儿童的Cariostat龋活跃性检测结果,分层随机分入试验组（1100 ppm含氟牙膏）、对照组（无氟牙膏）。受试儿童与检查者均不知道儿童分组情况。受试儿童在家长和老师的监督下使用分发的牙膏每天刷牙3次,每次刷牙2 min,并用计时器计时。12个月后,对两组儿童进行终期口腔健康检查。采用独立样本t检验及卡方检验比较儿童组间统计指标的差异。结果 由于疫情影响,终期检查推迟2个月。经过14个月产品使用后,在低龋态值儿童中,试验组全部龋及早期龋新生龋面均明显低于对照组（P <0.05）。对于中高龋态值组的儿童来说,试验组与对照组儿童无论是成洞龋还是早期龋新生龋均、龋面均的组间差异都没有统计学意义（P> 0.05）。结论 在14个月的研究期内,1100 ppm含氟牙膏对低龋态值的儿童具有良好的早期龋预防效果,但未观察到对低龋态值...     

Cariostat测试法中菌斑孵育时间选择的探讨

目的：了解机体龋病活跃性与其患龋状况的关系；分析Ｃａｒｉｏｓｔａｔ法２４ｈ、４８ｈ两种菌斑孵育时间所获的结果及其间的转换状态，确定合适的孵育时间。方法：对３９１名３岁～５岁幼儿进行龋病检查和Ｃａｒｉｏｓｔａｔ法龋病活跃性测试，观察菌斑孵育２４ｈ、４８ｈ的检测结果。结果：Ｃａｒｉｏｓｔａｔ法中菌斑孵育２４ｈ、４８ｈ的各度和患龋率、ｄｆｔ、ＣＳＩ均有高度相关性（Ｐ＜０．００１），４８ｈ的相关数值更大；孵育４８ｈ者各度患龋状况的差异分析亦比孵育２４ｈ者明显；孵育２４ｈ呈１度者有４６．５０％在４８ｈ时呈２度，４８ｈ呈２度者有６３．８５％在２４ｈ时呈０度或１度。结论：Ｃａｒｉｏｓｔａｔ能反映机体之患龋现状，其４８ｈ的菌斑孵育结果更能确切地体现机体的龋病活跃性     

龋蚀活跃性试验与龋蚀及牙龈状态的研究分析

目的 :研究龋蚀活跃度与龋蚀现状及龋蚀进展速度的关系 ,以及其与牙龈状态的关系。方法 :对 418名中学生从初中一年级起连续 2年进行龋蚀状态、牙龈状态的追踪检查 ,并在初中三年级时记录其龋蚀活跃度。结果 :各牙位龋均在 2年内均呈现上升趋势 ,其中上、下第一恒磨牙龋均明显高于其它牙位 ;龋蚀活跃度与龋均有极明显相关关系 ;龋蚀活跃度与 2年龋均增加值亦有极明显正相关关系 (P≤ 0 .0 5 ) ;龋蚀活跃度与菌斑指数、牙龈指数间无相关关系 ;龋均与菌斑指数、牙龈指数间无相关关系 ;菌斑指数与牙龈指数间有极明显相关关系。结论 :高龋蚀活跃度者龋蚀发生率高 ,龋蚀进展速度快 ,以该指标显示龋蚀现状并预测龋蚀进展的危险性是可靠的     

大连市某幼儿园儿童的龋齿活跃性与患龋状态的关系

目的研究大连市某幼儿园儿童龋齿活跃性与患龋状态之间的关系。方法选择3～6岁大连市某幼儿园儿童151名,进行口腔检查及龋齿活跃性试验(cariosat test,CAT),根据口腔检查及CAT值,分析调查对象的患龋状态。结果该幼儿园儿童患龋率为64.9%,龋均为2.77。CAT值低度组的患龋率是32.5%(49/151),中度组是54.3%(82/151),高度组是13.2%(20/151)。CAT值低度组与中度组的患龋率差异有统计学意义(χ2=2.539,P=0.025),CAT值低度组与高度组的患龋率差异有统计学意义(χ2=13.452,P<0.001),CAT值中度组与高度组的患龋率差异有统计学意义(χ2=9.910,P=0.016)。比较龋均在不同CAT值分度组的差异,CAT值高度组与中度组(t=2.264,P=0.037)、低度组(t=12.476,P<0.001)比较,差异均有统计学意义。结论大连某幼儿园儿童患龋率较高,龋齿活跃性高的儿童占大多数。     

Cariostat法对成年患者的龋活跃性检测的效果评价

目的 研究Cariostat检测法用于成年患者患龋风险评估的可行性,为不同年龄段成年门诊患者的龋病防治提供参考依据。方法 用Cariostat检测法对南京医科大学附属口腔医院门诊就诊的52例不同年龄段成年患者(18~24岁,25~34岁,35~44岁,45~54岁,≥55岁)进行龋活跃性检测。并按照世界卫生组织《口腔健康调查基本方法》第5版的标准进行口腔检查,同时进行现场问卷调查,用于Cariogram系统评估。口腔检查包括牙列状况、患龋情况等,问卷调查包括饮食习惯、口腔保健习惯等。分析不同年龄段成年门诊患者患龋现状,用Cariostat法检测不同年龄段成年门诊患者的龋活跃性,得出其患龋风险等级,并与Cariogram系统评估的患龋风险等级进行比较,评价Cariostat检测法与Cariogram龋风险评估系统的一致性。结果 Cariostat检测法得出的不同龋风险等级的成年门诊患者低风险组与中、高风险组的龋面均有差异(P<0.05),Cariogram不同龋风险等级的成年门诊患者低风险组与中、高风险组的龋均、龋面均有差异(P<0.05);Cariostat检测法与Cariogram龋风险评估系统对成年患者龋风险等级的评估结果表明,在≥55岁组Kappa值为0.467(P<0.05),为中等一致性。结论 Cariostat检测法有利于了解成年门诊患者的龋活跃性,尤其是对55岁及以上患者更为准确有效。     

Cariostat龋易感性检测技术用于评估无龋儿童1年后患龋风险的研究

目的:观察Cariostat龋易感性检测技术所检测出的龋态值与3岁无龋儿童1年后龋患进展的相互关系.方法:以深圳市2所市属幼儿园就读的3岁无龋儿童为研究对象,进行口腔检查并采用Cariostat龋易感性检测技术检测牙菌斑产酸能力,追踪观察1年,计算1年后的患龋率、龋失补牙数、龋失补牙面.统计学分析不同龋态值儿童龋患状况...     

菌斑pH值、游离钙和总蛋白水平与根龋易感性的关系

目的　分析菌斑液成分的动态变化与根龋易感性的关系。方法　比较无根龋组和有根龋组根面牙菌斑液在糖溶液漱口前后 ,所测定pH值、游离钙 (微电极法 )和总蛋白水平 (分光光度法 )的差异。结果　静止状态下 ,无根龋组和有根龋组的pH值 (无根龋组 6 2 4± 0 74,有根龋组 5 96±0 70 )和游离钙 [无根龋组 (0 6 0± 0 46 )mmol/L ,有根龋组 (0 89± 0 5 4)mmol/L]两项指标差异无统计学意义 ;糖漱口后 ,有根龋组的pH(5 14± 0 19)和游离钙 [(1 73± 0 74)mmol/L]水平均低于无根龋组[pH 5 2 8± 0 16 ,游离钙 (2 73± 1 2 5 )mmol/L],差异有统计学意义。总蛋白水平与游离钙含量之间没有相关性。同一个体牙根面与冠面之间菌斑液的三项指标均有显著的相关关系。结论　有根龋组的菌斑液有较强的致龋倾向 ,在细菌酵解糖产酸方面 ,牙根面 (牙骨质 )菌斑与牙冠面 (牙釉质 )菌斑无根本差别     

铸造与冷弯卡环基牙菌斑致龋菌分析

目的 初步探讨可摘局部义齿卡环对基牙健康的影响。方法 对铸造、冷弯卡环可摘局部义齿初截一周前后,基牙菌斑中的主要致龋菌进行分析比较。结果 铸造卡环组初戴一周后,基牙菌斑中粘性放线菌与变形链球菌的百分比分别上升了２．３％和３．８％;冷弯卡环组初戴一周后,上述细菌百分比分别上升了５．９％和３．３％,二者间差异有显著性;铸造卡环组粘性放线菌上升的百分比显著低于冷弯卡环组。结论 可摘局部义齿卡环会增加基牙     

Level of caries activity and an estimate in the increase of permanent teeth caries: a three-year follow up study in preschool senior children

The aim of this study was to examine relationships between the level of caries activity in preschool senior children and the increase of dental caries 3 years after the permanent teeth erupted. A total of 1133 preschool senior children aged 5–6 years were examined yearly during 3-year duration. A Caries Activity Test (Cariostat Test) was used at the first examination of this study. The results were as follows;

• 1.The caries prevalence rate of the subjects was 84.1% and the mean dft was 5.89 at the first examination.
• 2.There was a significant relationship between the CAT score and dft at the first examination (P < 0.001).
• 3.The subjects were divided into 3 risk groups by CAT score: low-risk group (20.4%), middle-risk group (43.3%) and high-risk group (36.3%).
• 4.Increments of DFT from 1 year to 3 years after the permanent tooth erupted for the high-risk group were more than twice for those of the low-risk group (P < 0.001). The prevalence of the permanent tooth decay for the high-risk group was also higher than that of the low-risk group (P < 0.001).

The results showed that the usage of the CAT Test for preschool senior children was useful to predict increase in permanent teeth caries over 3-year duration.     

口腔乳杆菌菌落密集度与乳牙龋患状况及进展的相关性分析

目的:观察口腔唾液中乳杆菌菌落密集度与乳牙龋患状况及进展的相关性,评价Dentocult LB龋活跃性检测方法的有效性.方法:以223名2～4岁深圳市属幼儿园小班儿童为研究对象,进行口腔检查并采用Dentocult LB法检测口腔唾液中乳杆菌菌落密集度,2年后复查,分别计算2年前后患龋率、龋失补牙数(dmft)、龋失补...     

Relationship between the existing caries status, plaque S. mutans and Cariostat caries activity test in children

An attempt was made in this study to find out the sensitivity and specificity of a caries activity test, CARIOSTAT and its relationship to the existing caries status and the plaque S. mutans level. The test proved to be highly sensitive and specific with significant relationship to the S.mutans count in the dental plaque. There also was a significant relationship between both the cultured microorganisms on MSB agar and the plaque in the Cariostat medium.     

乳牙牙菌斑脂肪酸的分析研究

目的 了解乳牙菌斑中脂肪酸组成、含量及其与龋病的关系。方法 43名4-6岁幼儿按龋蚀状况分组，气相色谱-质谱联用技术、气相色谱技术测定乳牙菌斑中脂肪酸组成厦含量，将脂肪酸含量与患龋状况作相关性分析。结果乳牙菌斑含有9种直链饱和脂肪酸及3种直链非饱和脂肪酸。总脂肪酸含量在无龋组、高危组间差别有统计学意义（P〈0．05），C16：0脂肪酸含量在有龋组、无龋组间及无龋组、高危组间差别有统计学意义（P〈0．05）。结论 乳牙菌斑总脂肪酸、C16．0脂肪酸含量所示与乳牙龋病之关系可进一步探讨。     

Results with the caries activity test "Cariostat" compared to prevalence of mutans streptococci and lactobacilli

The colorimetric test, Cariostat (Sankin, Japan), for measuring the caries activity, based on the presence of acidogenic microorganisms, was evaluated. The results were compared with the prevalence of mutans streptococci and lactobacilli in the samples. Pure cultures of S. mutans and lactobacilli were inoculated into the test medium. A maximum color change from blue to yellow was not obtained not even when large numbers of bacteria were used. Samples of stimulated saliva and plaque samples from people with different salivary levels of mutans streptococci and lactobacilli were inoculated into the test medium. Samples with very low or very high numbers of cariogenic bacteria were found in all score groups indicating that the Cariostat test did not satisfactorily differentiate samples with low or high numbers of microorganisms associated with dental caries.     

A study of caries activity test. 1. Comparison of MSBB test, Cariostat test, RD test

In the present study, experiments were performed using three variations of the caries activity test: the modified MSBB test (MSBB test), Cariostat test and Resazurin Disk test (RD test). The subjects of experiment I consisted of 147 patients treated in Nippon Dental University Hospital and first- and second-year students of Affiliated School of Dental Hygiene. Those of experiment II consisted of 25 men and women, aged 14 to 28 years. Experiment I was performed to determine the influence of the subject's concept of dental hygiene, DMF rate, presence or absence of regular brushing and skill in brushing, on the scores of MSBB and Cariostat test, and to determine whether or not there was a correlation between these two test. In experiment II, the correlation between the MSBB and Cariostat tests was studied, using the RD test as a standard. In experiment I, a comparison of MSBB scores before and after practice in dental hygiene revealed significantly decreased caries activity in the first-year students. Similar results were obtained by the Cariostat test. There was a positive correlation between the scores of the MSBB and Cariostat tests. The second-year students, who were considered to have a relatively good sense of oral hygiene, had the lowest scores. Experiment II revealed a correlation between the scores of the RD and MSBB tests.     

北京市海淀区3岁儿童龋病患病状况及龋病活跃性检测的研究

目的 通过了解北京市2所大学附属幼教机构学龄前儿童的口腔健康状况、龋病活跃性,了解儿童患龋情况与龋病活跃性之间的关系,探讨龋病活跃性检测筛查龋易感儿童及反映龋活跃性检测试剂的灵敏性和特异性,评价其对患龋预测的有效性和可行性.方法 对3岁年龄组儿童进行连续1年的口腔检查和龋活跃性检测,分析儿童患龋情况的变化与龋病活跃性之间的关系.结果 3岁儿童的患龋率为44.80%,龋均dft为2.04,龋面均dfs为2.79,儿童龋活跃性检测结果的各个分值与儿童患龋程度呈高度正相关关系(P<0.001).1年后随访,龋高危组儿童的新龋发生率显著高于龋低危组,经统计学检验其差异具有显著性意义(P<0.001).Cariostat法进行龋活跃性检测的敏感度可达95.1%,特异度达50.2%.结论 龋活跃性检测能够准确的反映儿童龋患现状,预测儿童患龋的趋势,为儿童制定个性化的预防保健计划.     

2012～2015年北京市海淀区13所幼儿园2～6岁儿童患龋趋势研究

目的了解北京市海淀区2~6岁儿童2012~2015年间乳牙龋病的患病趋势,为海淀区儿童龋病防治工作提供依据。方法 2012~2015年间对北京市海淀区13所幼儿园2~6岁儿童,连续4年进行口腔健康状况调查,采用WHO推荐的检查方法和龋病诊断标准,调查4年间海淀区2~6岁儿童乳牙龋病的患病趋势。口腔检查由2年以上工作经验的儿童口腔医生进行,所有的检查者都经过培训和校准。结果 4年来13所幼儿园2~6岁儿童乳牙患龋率、龋均(dft)和龋面均(dfts)逐年升高,5岁组儿童乳牙患龋率为69.06%~72.08%,dft为4.04~4.30,dfts为5.15~5.80。3~5岁儿童重度低龄儿童龋的患病率分别为22.09%~29.54%,26.92%~31.18%和32.18%~35.84%,随年龄增加而上升。2~6岁患龋儿童接受治疗率和龋补充填比呈下降趋势,分别为82.60%~61.46%和55.61%~42.96%。结论 海淀区2~6岁儿童乳牙患龋率、龋均和SECC患病率处于较高水平,在幼儿园采取龋病综合防治措施非常有效,但应同时加强龋病的预防工作,特别是对龋高危儿童的监控和防治。     

无锡市部分城区学龄前儿童乳牙龋齿与肥胖相关性调查研究

根据国外文献数据估样,随机选取无锡市部分城区1263例3～6岁在校学龄前儿童进行龋齿与肥胖之间关系的调查研究.超重儿童191人,肥胖儿童104人,体重正常968人,分别检查患龋情况.经SPSS分析,儿童年龄越大患龋程度越高(F=31.77,P=0.0001);儿童体重状态与年龄无相关性(x2=36.00,P=0.33);学龄前儿童乳牙患龋与体重状态无相关性(F=0.21,P=0.808).认为,肥胖并非是学龄前儿童乳牙龋齿的易感因素.