Comparison of Biofilm Characteristics Between an in Situ Biofilm Model of Supragingival Plaque and Natural Teeth

NCT ID: NCT02769260

Last Updated: 2016-05-11

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

EARLY_PHASE1

Total Enrollment

15 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-09-30

Study Completion Date

2016-06-30

Brief Summary

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The purpose of this study is to determine in situ the bacterial viability, thickness and bacterial diversity of a biofilm formed on different substrates in comparison to a naturally tooth-formed oral biofilm. In addition, it will be evaluated whether the restraint of oral hygiene measures may influence the development of the PL-Biofilm.

Detailed Description

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* To calculate an a priori sample size, the following statistical criteria were established: an effect size of 0.35, an alpha error of 0.05 and a statistical power of 87%. Assuming these criteria and using the repeated measures ANOVA test, a sample size of 15 subjects was required.
* Bacterial viability and thickness will be analyse by Confocal Laser Scanning Microscope and Live/Dead BackLight staining solution.
* Bacterial diversity will be analyse by Pyrosequencing the 16S DNAr gene.

Conditions

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Biofilm Dental Plaque

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

DOUBLE

Investigators Outcome Assessors

Study Groups

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No toothbrushing during experiment and Pyrosequencing

Volunteers will not brush their teeth during 48 hours. Dental plaque samples will be analyse by CLSM (confocal Laser scanning microscope) and 16S DNA pyrosequencing.

Group Type NO_INTERVENTION

No interventions assigned to this group

No toothbrushing during experiment

Volunteers will not brush their teeth during 48 hours. Dental plaque samples will be analyse by CLSM (confocal Laser scanning microscope).

Group Type NO_INTERVENTION

No interventions assigned to this group

Toothbrushing during experiment

48hours-Dental plaque samples will be analyse by CLSM (confocal Laser scanning microscope).

Group Type ACTIVE_COMPARATOR

Toothbrushing

Intervention Type OTHER

Normal toothbrushing without toothpaste or antiseptic mouthwash.

Interventions

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Toothbrushing

Normal toothbrushing without toothpaste or antiseptic mouthwash.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* systemically healthy
* good oral health status

Exclusion Criteria

* smoker or former smoker,
* presence of dental prostheses or orthodontic devices,
* antibiotic treatment or routine use of oral antiseptics in the previous 3 months,
* presence of any systemic disease that could alter the production or composition of saliva
Minimum Eligible Age

20 Years

Maximum Eligible Age

45 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Santiago de Compostela

OTHER

Sponsor Role lead

Responsible Party

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Inmaculada Tomas

Senior Lecture

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Inmaculada Tomás Carmona, S Lecturer

Role: PRINCIPAL_INVESTIGATOR

Univeristy of Santiago de Compostela

Locations

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Univeristy of Santiago de Compostela, Faculty of Dentistry

Santiago de Compostela, Galicia/ A Coruña, Spain

Site Status RECRUITING

Countries

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Spain

Central Contacts

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Inmaculada Tomás Carmona, S Lecturer

Role: CONTACT

981563100 ext. 12384

Facility Contacts

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Inmaculada Tomás Carmona, S Lecturer

Role: primary

981563100 ext. 12384

Other Identifiers

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Pyro-Biofilm

Identifier Type: -

Identifier Source: org_study_id

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