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Status unknownNCT03168217Updated May 30, 2017

Classification of Periodontitis Revisited: A Cluster Analysis

An observational study in Periodontitis, sponsored by University Paris 7 - Denis Diderot. Status unknown. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2017-05-30.

Sponsored by University Paris 7 - Denis Diderot · Observational

The sponsor has not verified this record recently (last verified May 2017), so the status shown — last known as Active, not recruiting — may be out of date.
Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
235
Ages
18 Years to 75 Years
Sex
All
01

Study summary

This study aims to identify phenotypic groups of patients with periodontitis by applying a cluster analysis.

Read the detailed description

This is a retrospective cross-sectional study based on a prospectively maintained database of consecutive patients attending the Departement of Periodontology at the Rothschild hospital. A cluster analysis will help to distinguish clinical and microbiological profils of periodontal patients.

02

Conditions studied

  • Periodontitis

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Keywords

  • Periodontitis
  • classification
  • Cluster analysis
03

In context

Periodontitis

1,231 studies on the registry are indexed under Periodontitis; 295 are open to participants now.

This study's enrollment of 235 is above the median of 90 across 372 observational studies indexed under Periodontitis.

Browse Periodontitis studies →

Lead sponsor

University Paris 7 - Denis Diderot is the lead sponsor of 13 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

This is a retrospective cross-sectional analysis based on a prospectively maintained database of consecutive patients attending the Department of Periodontology at the Rothschild Hospital of Paris (France)

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients with periodontitis either aggressive or chronic

Exclusion criteria

Exclusion Criteria:

  • Patients who had received periodontal therapies or antimicrobial therapy within the 6 months preceding the examination
05

Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
235 participants (actual)
Patient registry
No
06

What researchers measure

Primary outcomes

  1. Clinical Attachment Loss (CAL)

    measured in millimeters

    Time frame: one day

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: Yes — IPD Will be shared on request

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Jan 2003, a primary completion of Jan 2010 and a completion of Jun 2017. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 17, 2017
First posted
May 30, 2017
Start
Jan 2003
Primary completionActual
Jan 2010
CompletionEst.
Jun 2017
Last update
May 30, 2017
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 30, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03168217
Lead sponsor
University Paris 7 - Denis Diderot
Responsible party
Hélène Rangé (Clinical Professor, University Paris 7 - Denis Diderot) — Principal investigator
First posted
May 30, 2017
Start date
Jan 2003
Primary completion
Jan 2010
Completion
Jun 2017 (estimated)
Last update
May 30, 2017

Study contacts

Philippe Bouchard, PhD,DDS
study chair · Paris Diderot University

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in May 2017. You cannot join it, but the record below documents what was studied.

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Discussion

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