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치근단 병변이 있는 무증상 치아의 치근단 확대 후 미생물 부하

2026년 11월 3일 업데이트: Tan Firat Eyuboglu, Istanbul Medipol University Hospital

무증상 치아 치근단 병변에서 수동 초음파 활성화 전후의 미생물 부하에 대한 치근단 확대의 영향

The goal of this observational study is to define the role of apical shaping and irrigation activation on root canal cleanliness. The main questions it aims to answer are:

  • does the effectiveness of irrigation activation depends on apical shaping?
  • can a similar success be achieved by increasing apical shaping without irrigation activation Participants will [describe the main tasks participants will be asked to do, treatments they'll be given and use bullets if it is more than 2 items].

연구 개요

상세 설명

The aim of this study is to evaluate the effect of apical enlargement with two different diameters on the intraradicular microbiota of teeth with chronic apical periodontitis lesion before and after passive ultrasonic irrigation activation using ddPCR analysis in vivo.The study was planned as a randomized controlled clinical trial. We are planning to include 24 patients who was referred to the Istanbul Medipol University Faculty of Dentistry Endodontic Clinic with the need for root canal treatment, with asymptomatic chronic apical periodontitis. 24 patients will randomly be assigned to two groups according to the apical shaping size during root canal treatment: 25/.04 and 35/.04. Microbiological sampling of the teeth will be done with paper cones in three steps during the root canal treatment: 1. Sterility control samples (SR1) from the tooth surface after cavity preparation, 2. The first microbiological sample (S1) from the root canal after the initial file reaches the working length. 3. The second microbiological sample (S2) from the root canal after the shaping and irrigation of the root canal is finished. 4. The third microbiological sample (S3) from the root canal after the irrigation activation in the root canal is finished.The samples will be sent to the genetic analysis laboratory for further analysis in the cold chain using a Droplet Digital PCR.

연구 유형

관찰

등록 (실제)

24

연락처 및 위치

이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.

연구 장소

      • Istanbul, 터키 (Türkiye), 34083
        • Istanbul Medipol University School of Dentistry

참여기준

연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.

자격 기준

공부할 수 있는 나이

18년 (성인, 고령자)

건강한 자원 봉사자를 받아들입니다

예

연구 대상 성별

모두

샘플링 방법

확률 샘플

연구 인구

24 patients who was referred to the Istanbul Medipol University Faculty of Dentistry Endodontic Clinic with the need for root canal treatment, with asymptomatic chronic apical periodontitis, witj clinical and radiographic findings. The study will be carried out in Istanbul Medipol University Faculty of Dentistry Endodontic Clinic, and patients with appropriate criteria will be informed about the treatment to be performed and their consent will be obtained. In this observational type study, patients treated by the same physician will be followed.

설명

Inclusion Criteria:

  • Patients between the ages of 18-65
  • Patients complying with the ASA1 and ASA2 classification (American Society of Anesthesiology)
  • Patients who has molar teeth with radiolucent lesions in the periapical region
  • The volunteer himself/herself or his/her legal representative wants to participate in the research by signing the 'Voluntary Consent Form'.
  • Being able to tolerate the treatment physically and mentally

Exclusion Criteria:

  • Patients who have taken antibiotics/corticosteroids in the last 3 months
  • Patients with systemic disease
  • Teeth that cannot be properly isolated with a rubber dam
  • Teeth without coronal sealing,
  • Teeth with periodontal pocket depth>4 mm and teeth with crown / root fracture.
  • Individuals who continue or are considering starting orthodontic treatment during the research
  • Pregnant and lactating individuals
  • The volunteer himself/herself or his/her legal representative does not want to participate in the research by signing the 'Voluntary Consent Form'.
  • Teeth that are damaged enough to require post-core treatment.

공부 계획

이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.

연구는 어떻게 설계됩니까?

디자인 세부사항

  • 관찰 모델: CASE_CONTROL
  • 시간 관점: PROSPECTIVE

코호트 및 개입

그룹/코호트
개입 / 치료
Group 1- One Curve Mini 25/0.4

Root canal shaping will be completed with a heat-treated nickel titanium OneCurve Mini #25/0.4 rotary file (Micro-Mega, Besancon, France) after reaching the apical region with #10 K stainless steel files (Dentsply Maillefer, Ballaigues, Switzerland). The irrigation solution will be used by adapting an ultrasonic tip (IRRI S 21/25; VDW, Munich, Germany) to an ultrasonic device (VDW Ultra; VDW, Munich, Germany). The tip will be activated a total of three times, each cycle lasting 20 s and involving the use of 1 ml of 3% NaOCl. Then 2 ml of 17% EDTA solution will be activated for 1 minute as described above. The ultrasonic tip will be placed 2 mm shorter than the working length without touching the canal walls.

24 patients will randomly be assigned to two groups according to the apical shaping size during root canal treatment: 25/.04 and 35/.04. Microbiological sampling of the teeth will be done with paper cones in three steps during the root canal treatment: 1. Sterility control samples (SR1) from the tooth surface after cavity preparation, 2. The first microbiological sample (S1) from the root canal after the initial file reaches the working length. 3. The second microbiological sample (S2) from the root canal after the shaping and irrigation of the root canal is finished. 4. The third microbiological sample (S3) from the root canal after the irrigation activation in the root canal is finished.The samples will be sent to the genetic analysis laboratory for further analysis in the cold chain using a Droplet Digital PCR.

Group 2- One Curve Mini 35/0.4

Root canal shaping will be completed with a heat-treated nickel titanium OneCurve Mini #35/0.4 rotary file (Micro-Mega, Besancon, France) after reaching the apical region with #10 K stainless steel files (Dentsply Maillefer, Ballaigues, Switzerland). The irrigation solution will be used by adapting an ultrasonic tip (IRRI S 21/25; VDW, Munich, Germany) to an ultrasonic device (VDW Ultra; VDW, Munich, Germany). The tip will be activated a total of three times, each cycle lasting 20 s and involving the use of 1 ml of 3% NaOCl. Then 2 ml of 17% EDTA solution will be activated for 1 minute as described above. The ultrasonic tip will be placed 2 mm shorter than the working length without touching the canal walls.

24 patients will randomly be assigned to two groups according to the apical shaping size during root canal treatment: 25/.04 and 35/.04. Microbiological sampling of the teeth will be done with paper cones in three steps during the root canal treatment: 1. Sterility control samples (SR1) from the tooth surface after cavity preparation, 2. The first microbiological sample (S1) from the root canal after the initial file reaches the working length. 3. The second microbiological sample (S2) from the root canal after the shaping and irrigation of the root canal is finished. 4. The third microbiological sample (S3) from the root canal after the irrigation activation in the root canal is finished.The samples will be sent to the genetic analysis laboratory for further analysis in the cold chain using a Droplet Digital PCR.

연구는 무엇을 측정합니까?

주요 결과 측정

결과 측정
측정값 설명
기간
apical shaping size
기간: through study completion, an average of 1 year

does apical shaping size affect the microbial load in the root canal after shaping and irrigation finishes? microbial load after two different apical shaping size will be compared between two groups. Droplet Digital PCR will be used to measure and compare the microbial load within the root canal before and after irrigation protocol in each group to measure this outcome.

through study completion, an average of 1 year
irrigation activation
기간: through study completion, an average of 1 year

does irrigation activation affect the microbial load in the root canal? microbial load after chemomechanical cleaning of the root canal and after the irrigation activation will be compared. Droplet Digital PCR will be used to measure microbial load before after irrigation activation in each canal to see its effect on reduction fo microbial load within the root canal.

through study completion, an average of 1 year

2차 결과 측정

결과 측정
측정값 설명
기간
the effect of apical shaping in irrigation activation
기간: through study completion, an average of 1 year

does apical size affect the irrigation activation? the microbial load after chemomechanical cleaning of the root canal and after irrigation activation will be compared between two groups (with different apical shaping size) to analyse the effect of apical shaping on irrigation activation. Droplet Digital PCR results before and after irrigation activation in root canals with different apical size will be compared to measure this outcome.

through study completion, an average of 1 year

공동 작업자 및 조사자

여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.

수사관

  • 수석 연구원: Tan Firat Eyüboglu, PhD, JSD, Istanbul Medipol University Hospital

연구 기록 날짜

이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.

연구 주요 날짜

연구 시작 (실제)

2024년 2월 24일

기본 완료 (실제)

2024년 7월 8일

연구 완료 (실제)

2024년 11월 27일

연구 등록 날짜

최초 제출

2023년 8월 29일

QC 기준을 충족하는 최초 제출

2023년 9월 6일

처음 게시됨 (실제)

2023년 9월 13일

연구 기록 업데이트

마지막 업데이트 게시됨 (실제)

2026년 11월 4일

QC 기준을 충족하는 마지막 업데이트 제출

2026년 11월 3일

마지막으로 확인됨

2026년 11월 1일

추가 정보

이 연구와 관련된 용어

개별 참가자 데이터(IPD) 계획

개별 참가자 데이터(IPD)를 공유할 계획입니까?

아니요

IPD 계획 설명

due to regulatory reasons the participant data will not be shared.

약물 및 장치 정보, 연구 문서

미국 FDA 규제 의약품 연구

아니

미국 FDA 규제 기기 제품 연구

아니

이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .

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