Clinical Trials Logo
  1. Home
  2. Bacterial Infections
  3. NCT03537664

Adjunctive Steps for Disinfection of Teeth With Primary Endodontic Infections

Bacterial Infections Clinical Trial

Official title:
Analysis of Metabolically Active Bacteria After Adjunctive Steps for Disinfection of Teeth With Primary Endodontic Infections: RNA- and DNA-based Molecular Study

Clinical Trial Summary

This study aims to evaluate an endodontic treatment protocol using adjunctive steps for disinfection of teeth with primary endodontic infections.

Clinical Trial Description

The success of endodontic treatment in teeth with necrotic pulp and apical periodontitis depends on the reduction of viable microorganisms of root canals by endodontic disinfection procedures. This study aims to evaluate by molecular methods the effect of different disinfection procedures on reduction, diversity and microbial metabolic activity. Patients with necrotic pulps and apical periodontitis in single-rooted teeth will be selected. Microbiological samples will be taken from root canals after access cavity (S1), after chemomechanical preparation with Reciproc System and 2.5% NaOCl (S2), after irrigant activation using the XP-Endo Finisher instrument (S3a) and ultrasonic activation (S3b); and after intracanal medication with calcium hydroxide for 14 days (S4), followed by 2nd-visit root canal preparation (S5). DNA and RNA will be extracted from root canal samples, and complementary DNA (cDNA) synthetized using reverse transcription reaction. The effect of treatment protocols on total microbiota levels will be determined by DNA-based quantitative polymerase chain reaction (qPCR) using universal primers for Bacteria domain. RNA of root canal samples will be used to determine the diversity of metabolically active microbiota by Reverse Transcriptase Reaction (RT), followed by amplification (PCR) and high throughput sequencing of the hypervariable region V4-V5 of 16S rRNA gene. The metabolic activity of the most prevalent species / taxa will be calculated by rRNA- and DNA-based molecular methods. Ratios between rRNA and DNA levels will be calculated to search for active bacteria (rRNA/DNA ≥ 1) in root canal samples. Data will be analyzed by statistical tests, with 5% significance level. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT03537664
Study type Interventional
Source University of Sao Paulo
Contact
Status Completed
Phase N/A
Start date August 4, 2017
Completion date May 29, 2020
View Details
See also
  Status Clinical Trial Phase
Completed NCT03726216 - Xydalba Utilization Registry in France
Completed NCT03605498 - OR PathTrac (Tracking Intra-operative Bacterial Transmission)
Withdrawn NCT05269121 - Bacteriophage Therapy in First Time Chronic Prosthetic Joint Infections Phase 1/Phase 2
Completed NCT02541695 - Characterization of Resistance Against Live-attenuated Diarrhoeagenic E. Coli N/A
Recruiting NCT02074865 - Children's Antibiotic Resistant Infections in Low Income Countries N/A
Completed NCT01689207 - To Investigate the Safety and Tolerability of Aztreonam-Avibactam (ATM-AVI) Phase 1
Completed NCT01932034 - Prospective Study to Optimize Vancomycin Dosing in Children and Adults Using Computer Software N/A
Completed NCT01412801 - Magnitude of the Antibody Response to and Safety of a GBS Trivalent Vaccine in HIV Positive and HIV Negative Pregnant Women and Their Offsprings Phase 2
Not yet recruiting NCT01159470 - The Rate of C-reactive Protein (CRP) Increase as a Marker for Bacterial Infections in Children N/A
Completed NCT00983255 - Ascending Dose Pharmacokinetic (PK) and Absolute Bioavailability (BA) Phase 1
Completed NCT00678106 - Study Of Dalbavancin Drug Levels Achieved In Hospitalized Adolescents Who Are Receiving Antibiotic Therapy For Bacterial Infections Phase 1
Completed NCT00799591 - French Study In ICU Patients Treated With Tigecycline N/A
Completed NCT01074775 - Human Innate Immune Responses To Mycobacterial Aerodigestive Tract Infection N/A
Completed NCT00478855 - Tazocin Intervention Study Phase 4
Terminated NCT00431028 - Sub-Tenon's Injection of Triamcinolone and Ciprofloxacin in a Controlled-Release System for Cataract Surgery Phase 1/Phase 2
Not yet recruiting NCT03634904 - Serum Ceftazidime Concentrations in Hemodialysis Patients N/A
Recruiting NCT05684705 - Study to Investigate the Penetration of Rifabutin Into the Lung After Multiple Intravenous Administrations of BV100 Phase 1
Recruiting NCT03858387 - PK/PD and Clinial Outcomes of Beta-lactams in ICU Patients
Enrolling by invitation NCT04764058 - Efficacy and Safety of Colistin Based Antibiotic Therapy Phase 1/Phase 2
Recruiting NCT06319235 - Clinical Trial to Demonstrate the Safety and Efficacy of DUOFAG® Phase 1/Phase 2