Periodontal DiseasesNew PeriodontaNCT04271787
New Periodontal Classification
An observational study of Periodontal Diseases and Peri-Implantitis, run by Beni-Suef University at 1 site in Egypt.
Trial summary
A new classification system of periodontal and peri-implant diseases and conditions was proposed by consensus of world experts in 2017. Since then there has been ongoing debates among periodontists regarding the application of the new classification. Read more about this study
- Who is it for?
- Ages 26 to 70 years
- Conditions the study is for
- Periodontal Diseases, Peri-Implantitis, Gingival Diseases
- What is being tested?
- questionnaire
- How many people
- 200 participants
- Where
- 1 siteEgypt
- Study dates
- 1 Mar 2019to 4 Nov 2019
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 26 to 70 years
- All sexes
- Adult, Older adult
Study population: periodontists in various universities
Who may be able to join
- periodontists
Who cannot join
- non periodontists
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Periodontal Diseases Classification: Old is Gold or New is Bold
A new classification system of periodontal and peri-implant diseases and conditions was proposed by consensus of world experts in 2017. Since then there has been ongoing debates among periodontists regarding the application of the new classification. This study aims to shed light on the current understanding of the new classification among Egyptian periodontists.
Read the detailed description
This study was approved by the Research Ethics Committee of Faculty of Dentistry Beni-Suef University (ID #FDBSUREC/27022019/AM) and was conducted in full accordance with the World Medical Association Declaration of Helsinki 1975, revised in 2003. The questionnaire was anonymous with no personal identification data. Completion and submission of the questionnaire was considered an approved informed consent to participate in the study by the Research Ethic Committee.
The questionnaire was designed by the authors and pilot tested among a group of 12 periodontists for validation. Afterwards, adjustments were made to ensure a clear and comprehensive version of the questionnaire. The questionnaire had a cover letter explaining the nature and purpose of the survey and comprised 15 questions. The first six statements of the questionnaire were descriptive in nature addressing the participant's demographics, and the seventh was a question whether the participant is aware of the new PDL classification or not. Only those who were aware of it were asked to proceed to 13 multiple choice questions using Likert scale; ranging from strongly disagree to strongly agree or from excellent to poor, in addition to "I don't know" option (8). There were also three open ended questions for further comments at the end of the questionnaire.
- Conditions
- Periodontal Diseases, Peri-Implantitis, Gingival Diseases
- Being tested
- questionnaire
- Keywords
- Classification, Periodontal diseases, Periodontitis, Peri-implantitis
- Medical subject headings
- Periodontal Diseases, Peri-Implantitis, Gingival Diseases, Periodontitis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
questionnaireOther
Questionnaire
| Study group | Role | What they receive |
|---|---|---|
| strongly dissatisfied | Not described Receives: Other: questionnaire | |
| dissatisfied | Not described Receives: Other: questionnaire | |
| neutral | Not described Receives: Other: questionnaire | |
| satisfied | Not described Receives: Other: questionnaire | |
| strongly satisfied | Not described Receives: Other: questionnaire | |
| don't know | Not described Receives: Other: questionnaire |
What is being measured
The primary outcome is the main question the study is designed to answer.
significant predictors of satisfaction with the new classification.
Binary logistic Regression analysis to determine significant predictors of new classification application. Ordinal Regression analysis to determine significant predictors of satisfaction with the new classification.
Measured: 4 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted17 Feb 2020
- Study start1 Mar 2019
- Primary completion30 Jun 2019
- Study completion4 Nov 2019
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Periodontal DiseasesStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Other
- Time perspective
- Cross-sectional
- Enrolment
- 200 participants (actual)
Sponsor and investigators
- Lead sponsor
- Beni-Suef University
- Sponsor type
- University, hospital or other
- Collaborators
- Cairo University
- Responsible party
- Principal investigator, Maha Abdelkawy, Beni-Suef University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04271787
- Sponsor's protocol ID
- FDBSUREC/27022019/AM
- Acronym
- New Periodonta
- Status last verified
- Feb 2020
- First submitted
- 12 Feb 2020
- Last updated
- 8 Oct 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: ONCE PUBLISHED
Study at a glance
From the registry record, last updated by the sponsor on 8 Oct 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Periodontal Diseases Classification: Old is Gold or New is Bold
- ClinicalTrials.gov ID
- NCT04271787
- Acronym / sponsor ID
- New Periodonta / FDBSUREC/27022019/AM
- Conditions
- Periodontal Diseases, Peri-Implantitis, Gingival Diseases
- Keywords
- Classification, Periodontal diseases, Periodontitis, Peri-implantitis
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 200 participants (actual)
- Lead sponsor
- Beni-Suef UniversityUniversity, hospital or other
- Collaborators
- Cairo University
- Study start
- 1 Mar 2019 (actual)
- Primary completion
- 30 Jun 2019 (actual)
- Study completion
- 4 Nov 2019 (actual)
- First posted
- 17 Feb 2020 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
A new classification system of periodontal and peri-implant diseases and conditions was proposed by consensus of world experts in 2017. Since then there has been ongoing debates among periodontists regarding the application of the new classification. This study aims to shed light on the current understanding of the new classification among Egyptian periodontists.
Detailed description
This study was approved by the Research Ethics Committee of Faculty of Dentistry Beni-Suef University (ID #FDBSUREC/27022019/AM) and was conducted in full accordance with the World Medical Association Declaration of Helsinki 1975, revised in 2003. The questionnaire was anonymous with no personal identification data. Completion and submission of the questionnaire was considered an approved informed consent to participate in the study by the Research Ethic Committee.
The questionnaire was designed by the authors and pilot tested among a group of 12 periodontists for validation. Afterwards, adjustments were made to ensure a clear and comprehensive version of the questionnaire. The questionnaire had a cover letter explaining the nature and purpose of the survey and comprised 15 questions. The first six statements of the questionnaire were descriptive in nature addressing the participant's demographics, and the seventh was a question whether the participant is aware of the new PDL classification or not. Only those who were aware of it were asked to proceed to 13 multiple choice questions using Likert scale; ranging from strongly disagree to strongly agree or from excellent to poor, in addition to "I don't know" option (8). There were also three open ended questions for further comments at the end of the questionnaire.
Study design
- Observational model
- Other
- Time perspective
- Cross-sectional
- Number of arms
- 6
| Arm | Type | Receives |
|---|---|---|
| strongly dissatisfied | – | Other: questionnaire |
| dissatisfied | – | Other: questionnaire |
| neutral | – | Other: questionnaire |
| satisfied | – | Other: questionnaire |
| strongly satisfied | – | Other: questionnaire |
| don't know | – | Other: questionnaire |
Who may qualify
- Ages
- 26 to 70 years
- Sex
- All
- Age groups
- Adult, Older adult
- Study population
- periodontists in various universities
Key inclusion criteria (1 listed)
- periodontists
Key exclusion criteria (1 listed)
- non periodontists
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| questionnaireQuestionnaire | Other | dissatisfied, don't know, neutral, satisfied, strongly dissatisfied, strongly satisfied |
Primary outcome
significant predictors of satisfaction with the new classification.
Time frame: 4 months
Binary logistic Regression analysis to determine significant predictors of new classification application. Ordinal Regression analysis to determine significant predictors of satisfaction with the new classification.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 8 Oct 2026.
- Individual participant dataSharing planned: Yes. ONCE PUBLISHED
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Periodontal Diseases and Peri-Implantitis, run by Beni-Suef University at 1 site in Egypt.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 8 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Egypt. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
significant predictors of satisfaction with the new classification. (time frame: 4 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Oct 2026.