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Clinical Study to Evaluate Remineralization Using an in Situ Model. (REMINSITU)

2026年6月2日 更新者：Colgate Palmolive

Clinical Study to Evaluate Enamel Remineralization Using Three Dentifrices in an in Situ Model.

This is a phase III clinical trial that aims to evaluate the enamel remineralization efficacy of three dentifrices on artificial caries lesions using an in situ model. The study involves 30 healthy volunteers, aged 18 to 70, who will participate in a randomized, triple-blind, three-period crossover design. Researchers will compare a 750 ppm MFP dentifrice against a 1450 ppm MFP positive control and a fluoride-free negative control to measure variations in mineral gain. Participants will wear a removable intraoral appliance containing human enamel blocks for three 14-day experimental phases. A 7-day washout period using will be implemented before and between each treatment phase.

研究概览

地位

尚未招聘

条件

干预/治疗

详细说明

This Phase III, randomized, single-center, triple-blind, crossover clinical study will evaluate the remineralization efficacy of three dentifrices on artificially induced initial enamel caries lesions. The research will involve 30 healthy participants aged 18 to 70 years who meet strict inclusion criteria. The experimental design will utilize an in situ model where participants will wear custom-made removable mandibular intraoral appliances containing four human enamel blocks with pre-formed artificial caries lesions. These lesions will be created laboratory-side using an acidified gel demineralization system before the blocks are mounted into the appliances.

The study will follow a nine-week timeline, divided into three 14-day experimental phases separated by 7-day washout periods to eliminate carryover effects, totaling 8 visits. During the treatment phases, subjects will be randomly assigned to a sequence of three test products: a test dentifrice with 750 ppm MFP, a positive control with 1450 ppm MFP, and a fluoride-free negative control. Each participant will receive a soft-bristle toothbrush and the assigned toothpastes.

The primary outcome will be the change in integrated mineral loss measured by transverse microradiography (TMR). Baseline mineral loss will be established from a slice of each block before intraoral exposure and compared to post-treatment analysis of the adjacent tissue. Secondary outcomes will include changes in lesion depth and fluorescence loss parameters assessed via Quantitative Light-induced Fluorescence (QLF).

Statistical analysis will be performed using a linear mixed-effects ANCOVA model to confirm the hypothesis that the 750 ppm MFP dentifrice promotes significantly greater remineralization than the negative control, with effects lower than or comparable to the high-fluoride positive control.

研究类型

介入性

注册 (估计的)

30

阶段

  • 第三阶段

联系人和位置

本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。

学习联系方式

学习地点

参与标准

研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

  • 成人
  • 年长者

接受健康志愿者

是的

描述

Inclusion Criteria:

  • Males and females, between 18-70 years of age (inclusive);
  • Informed Consent Form signed and availability for the duration of the study;
  • Good general health (absence of any condition that, in the opinion of the Principal Investigator, might constitute a risk to the subject while participating in the study. Examples include heart problems, valve/hip replacements, etc);
  • Willingness to provide information related to their medical history;
  • Minimum of 20 uncrowned permanent natural teeth (excluding third molars);
  • Normal salivary flow;
  • Willingness to wear an intra-oral appliance all day as instructed except when eating and drinking.

Exclusion Criteria:

  • Oral pathology, chronic disease, or a history of allergy to testing products;
  • Subject using anticonvulsants, antihistamines, antidepressants, sedatives, tranquilizers, anti-inflammatory medication or daily analgesics within one month prior to the start of the study or scheduled to start such intake during the course of the study;
  • Subject participating in any other clinical study;
  • Subject pregnant or breastfeeding;
  • Subject allergic to oral care products, personal care consumer products, or their ingredients;
  • Extended use of antibiotics or therapeutic mouthwash any time during the three months prior to entry into the study;
  • A medical history reporting that the subject has a current systemic or autoimmune disease, such as diabetes, lupus, etc.;
  • Ongoing use of medications known to affect the gingival tissues (i.e. calcium channel blockers, phenytoin, cyclosporine);
  • Advanced periodontal disease (purulent exudate, tooth mobility, and/or extensive loss of periodontal attachment or alveolar bone). Pocket depth equal or greater than 4 mm;
  • Five or more decayed, untreated dental sites (cavities);
  • Current smokers and subjects with a history of alcohol or drug abuse;
  • Dental work prevents wearing of the appliance or a reported need to wear a night guard.

学习计划

本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。

研究是如何设计的？

设计细节

  • 主要用途：其他
  • 分配：随机化
  • 介入模型：交叉作业
  • 屏蔽：四人间

武器和干预

参与者组/臂
干预/治疗
实验性的：Test Group
Subjects will brush using a fluoride toothpaste containing 750 ppm MFP in a Dical base and a soft bristle toothbrush
设备：牙刷
市售成人软毛牙刷
药品：Fluoride toothpaste containing 750 ppm MFP in a Dical base
Subjects will brush using a fluoride toothpaste containing 750 ppm MFP in a Dical base and a soft bristle toothbrush for 14 days
有源比较器：Positive Control Group
Subjects will brush using a fluoride toothpaste containing 1450 ppm MFP in a Dical base and a soft bristle toothbrush
设备：牙刷
市售成人软毛牙刷
药品：Fluoride toothpaste containing 1450 ppm MFP in a Dical base
Subjects will brush using a fluoride toothpaste containing 1450 ppm MFP in a Dical base and a soft bristle toothbrush for 14 days
假比较器：Negative Control Group
Subjects will brush using a fluoride-free toothpaste in a Dical base and a soft bristle toothbrush
设备：牙刷
市售成人软毛牙刷
药品：Fluoride-free toothpaste in a Dical base
Subjects will brush using a fluoride-free toothpaste in a Dical base and a soft bristle toothbrush for 14 days

研究衡量的是什么？

主要结果指标

结果测量
措施说明
大体时间
Change in integrated mineral loss (Δz)
大体时间：9 weeks
Integrated mineral loss (Δz) will be assessed by transverse microradiography (TMR). This outcome will evaluate the change from the baseline demineralized state (Δz0) to the post-treatment state (Δz1) to quantify the net mineral gain or loss.
9 weeks

次要结果测量

结果测量
措施说明
大体时间
Change in lesion depth
大体时间：9 weeks
Post-treatments lesion depth (LD) will be assessed by TMR. For each experimental phase, post-treatment values will be compared with corresponding baseline measurements to determine the extent of remineralization.
9 weeks
Change from Baseline in Fluorescence Loss
大体时间：9 weeks
Fluorescence loss ΔF, will be assessed by quantitative light-induced fluorescence (QLF) to measure the percentage loss of fluorescence intensity. The change will be calculated by comparing post-treatment values at 9 weeks with baseline measurements.
9 weeks
Change from Baseline in Maximum Fluorescence Loss ΔFmax at 9 Weeks
大体时间：9 weeks
Maximum fluorescence loss ΔFmax at the deepest point of the lesion will be assessed by quantitative light-induced fluorescence (QLF). The change will be calculated by comparing post-treatment values at 9 weeks with baseline measurements.
9 weeks
Change from Baseline in Fluorescence Loss Volume (ΔQ) at 9 Weeks
大体时间：9 weeks
Fluorescence loss volume (ΔQ) will be assessed by quantitative light-induced fluorescence (QLF). The change will be calculated by comparing post-treatment values at 9 weeks with baseline measurements.
9 weeks

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

Colgate Palmolive

合作者

Federal University of Paraíba

调查人员

  • 首席研究员：Fábio Correia Sampaio, PhD、Federal University of Paraíba

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (估计的)

2026年6月1日

初级完成 (估计的)

2026年10月1日

研究完成 (估计的)

2026年10月1日

研究注册日期

首次提交

2026年5月14日

首先提交符合 QC 标准的

2026年6月2日

首次发布 (实际的)

2026年6月4日

研究记录更新

最后更新发布 (实际的)

2026年6月4日

上次提交的符合 QC 标准的更新

2026年6月2日

最后验证

2026年5月1日

更多信息

与本研究相关的术语

关键字

其他研究编号

  • CRO-2026-02-REMIN-BZ-CB

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)？

不

药物和器械信息、研究文件

研究美国 FDA 监管的药品

不

研究美国 FDA 监管的设备产品

不

此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.

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