此页面是自动翻译的，不保证翻译的准确性。请参阅 英文版 对于源文本。

Photodynamic Therapy as an Adjunct in Periodontal Treatment (PDT-PERIO)

2026年6月2日 更新者：Gabriela Guadalupe Zambrano Manzaba、Universidad Catolica Santiago de Guayaquil

Clinical Evaluation of Photodynamic Therapy as an Adjunct to Scaling and Root Planing in the Treatment of Periodontal Disease: A Split-Mouth Randomized Controlled Clinical Trial

This study aims to evaluate the clinical effectiveness of antimicrobial photodynamic therapy (aPDT) as an adjunct to scaling and root planing (SRP) in the treatment of periodontitis. A split-mouth design will be used, in which one hemiarch receives conventional SRP and the contralateral hemiarch receives SRP combined with aPDT. Clinical periodontal parameters, including probing pocket depth (PPD), clinical attachment level (CAL), bleeding on probing (BOP), plaque index (PI), and gingival index (GI), will be assessed at baseline and 30 days after treatment. The study seeks to determine whether adjunctive aPDT improves periodontal outcomes compared with conventional non-surgical periodontal therapy alone.

研究概览

地位

尚未招聘

条件

干预/治疗

详细说明

Periodontitis is a chronic inflammatory disease characterized by the destruction of the supporting tissues of the teeth and is one of the leading causes of tooth loss worldwide. Scaling and root planing (SRP) is considered the gold standard non-surgical treatment; however, complete elimination of periodontal pathogens may be difficult in deep periodontal pockets and anatomically complex sites.

Antimicrobial photodynamic therapy (aPDT) has emerged as a minimally invasive adjunctive treatment. This technique combines a photosensitizing agent, toluidine blue O, with low-level laser irradiation to produce reactive oxygen species capable of destroying periodontal pathogens while minimizing damage to host tissues.

This study will be conducted at the Dental Clinic of the Universidad Católica de Santiago de Guayaquil, Ecuador. Thirty adult patients diagnosed with periodontitis will be enrolled. A split-mouth randomized design will be used, with one hemiarch receiving SRP alone (control) and the contralateral hemiarch receiving SRP plus aPDT (test group).

Clinical parameters including probing pocket depth (PPD), clinical attachment level (CAL), bleeding on probing (BOP), plaque index (PI), and gingival index (GI) will be recorded at baseline and at 30-day follow-up. The primary objective is to compare the clinical effectiveness of adjunctive aPDT versus conventional SRP alone in improving periodontal health outcomes.

The study has been approved by the Ethics Committee for Research in Human Subjects of the Universidad Católica de Santiago de Guayaquil (CEISH-UCSG) and will be conducted in accordance with ethical principles for human research.

研究类型

介入性

注册 (估计的)

30

阶段

  • 不适用

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

  • 厄瓜多尔
    • Guayas
      • Guayaquil、Guayas、厄瓜多尔、090101
        • Dental School, Catholic University of Santiago de Guayaquil (UCSG)
        • 副研究员：
          • HECTOR A LEMA GUTIERREZ, DDS
        • 接触：
        • 接触：
        • 副研究员：
          • PABLO M REYES CUENCA, DDS
        • 首席研究员：
          • GABRIELA GUADALUPE ZAMBRANO MANZABA, DDS

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

不

描述

Inclusion Criteria:

  • Adults aged 18 to 65 years.
  • Diagnosis of Stage I, II, III, or IV periodontitis according to the 2018 World Workshop Classification.
  • Presence of at least two hemiarches with periodontal pockets ≥5 mm suitable for a split-mouth design.
  • Systemically healthy individuals.
  • No periodontal treatment received within the previous 6 months.
  • No use of antibiotics, anti-inflammatory drugs, or antiseptic mouth rinses within the previous 3 months.
  • Ability and willingness to provide written informed consent and attend follow-up visits.

Exclusion Criteria:

  • Uncontrolled systemic diseases that may affect healing or immune response.
  • Use of antibiotics, corticosteroids, or immunosuppressive medications within the previous 3 months.
  • Active smokers consuming more than 10 cigarettes per day.
  • Pregnant or breastfeeding women.
  • Presence of dental implants, defective restorations, or teeth with Grade III mobility in the selected study sites.
  • Known allergy to toluidine blue O or any component of the photosensitizer.
  • Individuals unable or unwilling to attend the 30-day follow-up visit.

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：治疗
  • 分配：随机化
  • 介入模型：并行分配
  • 屏蔽：双倍的

武器和干预

参与者组/臂
干预/治疗
有源比较器：Scaling and Root Planing (SRP)
Hemiarch treated with conventional non-surgical periodontal therapy consisting of scaling and root planing alone.
程序：Scaling and Root Planing
Conventional non-surgical periodontal therapy performed using ultrasonic and manual instrumentation to remove subgingival biofilm and calculus.
实验性的：Scaling and Root Planing Plus Antimicrobial Photodynamic Therapy (SRP + aPDT)
Hemiarch treated with conventional scaling and root planing combined with adjunctive antimicrobial photodynamic therapy using toluidine blue O and low-level laser irradiation.
程序：Scaling and Root Planing
Conventional non-surgical periodontal therapy performed using ultrasonic and manual instrumentation to remove subgingival biofilm and calculus.
程序：Antimicrobial Photodynamic Therapy
Adjunctive antimicrobial photodynamic therapy using toluidine blue O as photosensitizer activated with a 650 nm low-level laser following scaling and root planing.

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 Probing Pocket Depth (PPD)
大体时间：Baseline and 30 Days
Mean change in probing pocket depth (PPD), measured in millimeters using a UNC-15 periodontal probe, comparing baseline and 30-day follow-up between treatment groups.
Baseline and 30 Days

次要结果测量

结果测量
措施说明
大体时间
Change in Clinical Attachment Level (CAL)
大体时间：Baseline and 30 Days
Mean change in clinical attachment level (CAL), measured in millimeters from the cemento-enamel junction to the bottom of the periodontal pocket.
Baseline and 30 Days
Change in Bleeding on Probing (BOP)
大体时间：Baseline and 30 Days
Percentage of sites presenting bleeding on probing after periodontal examination.
Baseline and 30 Days
Change in Plaque Index (PI)
大体时间：Baseline and 30 Days
Percentage of dental surfaces with visible plaque assessed using the O'Leary plaque index.
Baseline and 30 Days
Change in Gingival Index (GI)
大体时间：Baseline and 30 Days
Mean gingival index score assessed according to the Löe and Silness criteria.
Baseline and 30 Days

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

Universidad Catolica Santiago de Guayaquil

出版物和有用的链接

负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。

一般刊物

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7月28日

初级完成 (估计的)

2026年8月30日

研究完成 (估计的)

2026年9月27日

研究注册日期

首次提交

2026年6月2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8日

研究记录更新

最后更新发布 (实际的)

2026年6月8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6月1日

更多信息

与本研究相关的术语

关键字

其他相关的 MeSH 术语

其他研究编号

  • CEISH-UCSG-045-2025. - CEISH-

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)？

未定

IPD 计划说明

A decision regarding the sharing of individual participant data (IPD) has not yet been made. Data sharing plans will be determined after study completion, publication of primary results, and in accordance with institutional policies, ethical approvals, participant confidentiality requirements, and applicable regulations.

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.

订阅