氟离子透入防龋2年效果观察

氟离子透入防龋２年效果观察四川省郫县人民医院口腔科周在蓉氟离子透入法是国内近年来采用的一种局部给药防龋新技术,利用氟化物电解后释放出活性很强的氟离子直接与牙作用,促进牙的矿化和再矿化,增强其抗酸能力起到防龋作用。以１９８８年３月实足年龄３岁和６岁儿童...     

氟离子透入防龋效果观察报告

本文通过过用氟离子透入防龋法对３７１名一年级小学生在实验前后观察比较，发现实验后龋和患龋率明显下降。因此，作者认为有条件地区有通过此法对小学生进行防龋。     

氟离子透入防龋三年临床效果评价

氟离子透入防龋三年临床效果评价周洪来李振英李瑞智刘锡贵我国１２亿人口，患龋者达４亿，尤为严重的是乳牙患龋率相当高，大大损害儿童口腔健康［１］。作者认为氟离子透入对减少龋齿发生率有明显作用，因而对氟离子透入防龋的可行性进行了初步临床观察和评价。１．资料...     

第一恒磨牙应用氟保护漆防龋效果的临床观察

龋齿是危害人群口腔健康的最主要疾病之一,在儿童、青少年中发病率较高,龋齿不仅通过局部危害影响人的全身健康,重则会影响儿童的生长发育.氟保护漆预防龋齿自应用以来取得了较好的防龋效果,降低了龋病的发病率,目前已在国际上广泛应用[1].北京崇文区牙病防治中心于1997年2月至1999年10月选取小学1～3年级学生1687人进行氟保护漆的3年对照观察,其中463人完成实验,现将临床观察效果报告如下.     

10%氟钼酸铵溶液预防和抑制乳牙龋作用的临床观察

目的：通过临床实验评价１０％氟钼酸铵溶液预防和抑制乳牙龋的作用。方法：Ｅ和１０％氟钼酸铵溶液和０．９％生理盐水（对照组）涂擦牙面;实验前、后统计幼儿乳牙乳龋情况进行统计学分析。：（１０Ｆ一年后纪儿患龋率实验组明显低于对照组;（２）患新生龋的人数和牙数,实验组均明显低于对照组;（３）与对照组比１０％氟钼酸铵液有明显地抑制牙本质龋的作用。结论：１０％氟钼酸铵溶液对乳牙龋不仅有预防作用,而且对已形成的龋     

氟片防龋3年效果观察

〕目的：比较氟化物对儿童龋病的预防作用。方法：对饮水氟含量１．５７８×１０－５ｍｏｌ／Ｌ低氟区７岁～８岁学生５５７名，以学生班为单位分为氟片组与对照组，进行群体防龋试验。结果：试验３年后，氟片组与对照组比较，龋均、龋面均的降低率分别为４５．００％、５６．１４％，对第一恒磨牙，龋均、龋面均降低率分别为４０．５４％、５０．００％，龋齿都发生在第一恒磨牙的点隙窝沟处。对照组前牙及双尖牙龋患较低，氟化物对前牙光滑面龋的预防效果仍有待继续观察。结论：氟化物对窝沟龋有一定的防龋作用，但较窝沟封闭剂的防龋效果差。对于儿童龋齿的预防，如果将氟化物与窝沟封闭同时应用，将会取得最佳的效果。     

莞城自来水加氟防龋第十年效果观察

1974年10月,广东省东莞市莞城镇开始实行自来水加氟预防龋齿,该市的自来水加氟防龋工作组订出计划,对其效果和安全性进行了有对照的纵向观察,在加氟前和加氟第二年、四年和七年都作过调查报告,发现加氟有明显的防龋效果,而未出现氟斑牙问题。为     

防龋齿片的临床防龋效果

防龋齿片的临床防龋效果郑明明，许放，何彩云大连市口腔医院（１１６００１）大连市卫生防疫站（１１６０１１）根据大连市饮用水氟低的特点，１９８８年起我们研究了口服防龋齿片临床防龋的效果。现将１年的观察结果报告如下。１材料和方法１．１对象以３～６岁、８～１...     

氟保护漆抗龋效果的电镜观察

目的 观察氟保护漆的抗龋效果。方法 选离体牙10颗，分别观察采用氟保护漆和0.2g/L氟化钠溶液进行矿化实验和抗龋试验后釉质表面的超微结构。结果 涂氟保护漆牙釉表面经抗龋实验后在电镜下观察显微结构无破坏，氟化钠溶液组及空白组抗龋实验后釉质表面见明显的酸蚀孔隙。结论 本实验提示氟保护漆与牙面能够稳定的粘附，滞留时间较长，有利于氟化物的释放，有较好的抗龋性能。     

窝沟釉质成形术结合窝沟封闭剂防龋的临床观察

儿童龋齿不仅严重影响患儿的健康,而且给日常的生活和学习带来诸多不便。窝沟封闭是预防龋齿的有效方法。然而随着时间的延长窝沟封闭剂逐渐脱落,从而降低了防龋效果。如何提高封闭剂的保存率,笔者自1999年采用窝沟釉质成形术结合窝沟封闭剂防龋,随访1~3年,疗效满意。1临床资料     

Clinical study of indirect composite resin inlays in posterior stress-bearing cavities placed by dental students: results after 4 years

Objectives

This longitudinal randomized controlled clinical trial evaluated the longevity of composite resin inlays in single- or multi-surface cavities up to 4 years.

Methods

21 dental students placed 75 Artglass and 80 Charisma composite resin inlays in class I and II cavities in posterior teeth (89 adult patients) luted with dual-curing resin cements. Clinical evaluation was performed up to 4 years using modified USPHS criteria.

Results

87.2% of Artglass and 76.6% of Charisma inlays were assessed to be clinically excellent or acceptable. Up to the 4-year recall 5 Artglass and 11 Charisma inlays failed mainly because of postoperative symptoms, bulk fracture, and loss of marginal integrity. No significant differences between both composite resin materials could be detected at 4 years for all clinical criteria (Mann-Whitney U-test, p > 0.05). The comparison of restoration performance with time yielded a significant increase in marginal discolouration and postoperative symptoms (p < 0.05), deterioration of surface texture quality, marginal and restoration integrity (p < 0.05) for both inlay systems. However, the changes were mainly effects of scoring shifts from alfa to bravo. Small inlays compared to large inlays and premolar restorations compared to molar restorations showed significant better outcome for some of the tested clinical parameters for the Artglass inlays (p < 0.05). For Charisma inlays no such influences were revealed.

Conclusions

Clinical assessment of Artglass and Charisma composite resin inlays exhibited an annual failure rate of 3.2% and 5.9% that is within the range of published data. Within the limitations of this study indirect composite inlays are a competitive restorative procedure in stress-bearing preparations.     

Effect of chewable fluoride tablets on dental caries in schoolchildren: results after six years of use.

Two groups of children, initially in the first and second grades, chewed, rinsed with, and swallowed an acidulated phosphate-fluoride tablet containing 1 mg of fluoride either once or twice a day in school. A control group of children followed the procedure once a day using a placebo tablet. An evaluation after six years of treatments showed that both the once-a-day and the twice-a-day procedures with fluoride tablets effectively reduced the incidence of dental caries.