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Antimicrobial Agent for Reducing Bacteria in Aerosols and Oral Cavity

21 juin 2017 mis à jour par: GlaxoSmithKline

A Clinical Study to Evaluate the Efficacy of Pre-procedural and Pre-surgical Rinsing With an Antimicrobial Agent in Reducing Bacteria in Dental Aerosols and in the Oral Cavity

The primary objective of this study will be to evaluate the effect of two week pre-surgical rinsing with an antimicrobial mouthrinse containing 0.2% w/v Chlorhexidine digluconate on the total number of plaque bacteria in the mouth 3 days post implant surgery. The study will be conducted at Eastman Clinical Investigation Centre (ECIC), University College London (UCL) Eastman Dental Institute. Participants will be those who require a single and simple surgical implant to be placed, and will be recruited from new patient referrals within the Eastman Dental Hospital

Aperçu de l'étude

Statut

Complété

Les conditions

Intervention / Traitement

Type d'étude

Interventionnel

Inscription (Réel)

38

Phase

  • Phase 4

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Lieux d'étude

  • Royaume-Uni
      • London, Royaume-Uni, WC1X 8LD
        • GSK Investigational Site

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

18 ans à 64 ans (Adulte)

Accepte les volontaires sains

Oui

Sexes éligibles pour l'étude

Tout

La description

Inclusion Criteria:

  • Demonstrates understanding of the study and willingness to participate as evidenced by voluntary written informed consent and has received a signed and dated copy of the informed consent form.
  • Aged between 18-64 years old.
  • Understands and is willing, able and likely to comply with all study procedures and restrictions

  • Good general and mental health with, in the opinion of the investigator or medically qualified designee:

    1. No clinically significant and relevant abnormalities in medical history or upon oral examination.
    2. Absence of any condition that could affect the participant's safety or well being or their ability to understand and follow study procedures and requirements.
  • Females of childbearing potential who are, in the opinion of the investigator, practicing a reliable method of contraception

  • Dental Health

    1. Good overall oral health in the opinion of investigator.
    2. A minimum of 20 permanent teeth.
    3. Requiring a single and simple implant (single tooth replacement with no bone augmentation required for implant placement).
  • Females of childbearing potential who are, in the opinion of the investigator, practising a reliable method of contraception.

Exclusion Criteria:

  • Women who are known to be pregnant or who are intending to become pregnant over the duration of the study
  • Women who are breast-feeding
  • Known or suspected intolerance or hypersensitivity to the study materials (or closely related compounds) or any of their stated ingredients
  • Participation in another clinical study or receipt of an investigational drug within 30 days of the screening visit
  • Previous participation in this study
  • Recent history (within the last 1 year) of alcohol or other substance abuse
  • Use of antibiotics within 14 days prior to the Baseline visit or Implant surgery visit.
  • An employee of the sponsor or the study site or members of their immediate family

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: La prévention
  • Répartition: Randomisé
  • Modèle interventionnel: Affectation parallèle
  • Masquage: Seul

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Expérimental: Test product
Mouthwash containing 0.2% w/v Chlorhexidine digluconate
Médicament: 0.2% w/v Chlorhexidine digluconate
Participants will brush their teeth with the reference product (toothpaste) and thoroughly rinse their mouth with water and wait 5 timed minutes before using 10 ml of the 0.2% w/v Chlorhexidine digluconate mouthwash, except when using at site, where no brushing will take place prior to using the mouthrinse.
Médicament: Sodium fluoride toothpaste (Aquafresh Mild & Minty)
Participants will apply a strip of toothpaste to cover the head of the toothbrush and will brush in their usual manner for two timed minutes twice daily. They will then rinse their mouth thoroughly with water after brushing
Comparateur placebo: Control
Sodium fluoride toothpaste (Aquafresh Mild & Minty)
Médicament: Sodium fluoride toothpaste (Aquafresh Mild & Minty)
Participants will apply a strip of toothpaste to cover the head of the toothbrush and will brush in their usual manner for two timed minutes twice daily. They will then rinse their mouth thoroughly with water after brushing

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Total Number of Detectable Plaque Bacteria Sampled 3 Days Post Implant Surgery
Délai: At Day 3
The examiner identified three plaque sampling sites as follows: surgical site, contralateral site to the surgical site and tongue. An individual cotton swab was used at each identified site for up to 20 seconds in order to harvest a plaque sample and immediately be placed into 1mL phosphate buffered saline in a sterile Eppendorf tube. The samples were analysed using quantitative polymerase chain reaction (qPCR) which determined the total number of bacteria in a sample by quantifying the number of 16S ribosomal ribonucleic acid (rRNA) genes in the sample. The number of bacteria in each of the three identified plaque sampling sites (surgical site, contralateral site to the surgical site and tongue) for each participant were summed to calculate the total number of bacteria for each participant.
At Day 3

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Total Number of Detectable Plaque Bacteria Sampled at Implant Surgery (at Pre-rinse, Pre, Mid and Post Implant Surgery) and Post Implant Surgery (at Day 1 and 7)
Délai: At Day 0 (pre-rinse, pre, mid and post implant surgery), Day 1 and 7
The examiner identified three plaque sampling sites as follows: surgical site, contralateral site to the surgical site and tongue. An individual cotton swab was used at each identified site for up to 20 seconds in order to harvest a plaque sample and immediately be placed into 1mL phosphate buffered saline in a sterile Eppendorf tube. The samples were analysed using quantitative polymerase chain reaction (qPCR) which determined the total number of bacteria in a sample by quantifying the number of 16S ribosomal ribonucleic acid (rRNA) genes in the sample.
At Day 0 (pre-rinse, pre, mid and post implant surgery), Day 1 and 7
Area Under the Curve (AUC) for the Total Number of Plaque Bacteria in the Mouth Post Implant Surgery
Délai: Up to 7 days post implant surgery
The examiner identified three plaque sampling sites as follows: surgical site, contralateral site to the surgical site and tongue. An individual cotton swab was used at each identified site for up to 20 seconds in order to harvest a plaque sample and immediately be placed into 1mL phosphate buffered saline in a sterile Eppendorf tube. The samples were analysed using quantitative polymerase chain reaction (qPCR) which determined the total number of bacteria in a sample by quantifying the number of 16S ribosomal ribonucleic acid (rRNA) genes in the sample. The AUC of the total count of detectable plaque bacteria was calculated using trapezoidal rule in the time range from immediately post implant surgery to 7 days post implant surgery
Up to 7 days post implant surgery
Total Number of Recoverable Viable Bacteria in the Aerosol Generated During Dental Prophylaxis
Délai: At Baseline
Thick settle blood agar plates (supplemented with 5% [volume by volume v/v]) defibrinated horse blood) were used to determine the bacterial load of the aerosol. Thirty (30) minutes prior to the participants had their procedure (dental prophylaxis), a total of 5 settle plates with lids removed were placed at set positions around the dental surgery. After 30 minutes, the settle plates lids were replaced. This was repeated during the dental prophylaxis procedure using 5 fresh settle plates. All plates were then sealed with parafilm and transported for incubation in an anaerobic chamber at 37°C for 3 days. The plates were inspected daily to access growth and after 3 days removed and stored at 4°C for subsequent colony enumeration and Colony Forming Unit/mL (CFU/mL) calculation
At Baseline

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

GlaxoSmithKline

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

1 février 2015

Achèvement primaire (Réel)

1 juin 2015

Achèvement de l'étude (Réel)

29 février 2016

Dates d'inscription aux études

Première soumission

15 décembre 2014

Première soumission répondant aux critères de contrôle qualité

15 décembre 2014

Première publication (Estimation)

18 décembre 2014

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

19 juillet 2017

Dernière mise à jour soumise répondant aux critères de contrôle qualité

21 juin 2017

Dernière vérification

1 juin 2017

Plus d'information

Termes liés à cette étude

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • 202200
  • 2014-003222-40 (Numéro EudraCT)
  • RH02604 (Autre identifiant: GSK)

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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