Prevalence of Lower and Upper Incisor Periodontal Phenotypes and Risk Indicators.

NCT06981871 | Not Yet Recruiting

• 1 other identifier: 25Odonto02
• Study Type: observational
• Target: 245
• Locations: 1 country
• Sites: 1

Brief Summary

The determination of the periodontal phenotype is an essential part of the periodontal diagnostic process, which must guide not only treatment but also prognosis (Kim et al. 2020). This determination is based on the clinical assessment of 3 individual variables: gingival height/thickness and alveolar bone cortical thickness. Although these anatomical characteristics are genetically determined, they are also influenced by numerous acquired, endogenous or exogenous factors that can act at a general and/or local level. The periodontal phenotype is therefore specific to an individual and its 3 components vary over time according to the dental sectors and sites of each individual. For example, the morphology of this phenotype varies according to whether the gingiva is thick or thin, high or reduced, and the bone cortex is thick or thin, with all possible combinations. Clinicians need to know the distribution of these different types of phenotypes, particularly in the aesthetic areas they are concerned with, in order to better identify the most fragile ones in the face of the multiple daily stresses to which the periodontium may be subjected: muscular force, dental plaque, oral hygiene manoeuvres, parafunctionality, dental procedures.... However, studies on the prevalence of the periodontal phenotype are limited and mainly concern Asian, Indian and American populations, with very few studies on European populations. Main objective: To assess the prevalence of periodontal phenotypes in the upper and lower incisors of French subjects, according to tooth type and at the individual level. Secondary objective: Identification of potential risk indicators in relation to the type of periodontal phenotype."

Conditions

Gingiva; Phenotype

Outcome Measures

Primary Outcomes (3)

• Prevalence of gingival phenotypes (gingival thickness )

  Assessment of gingival thickness

  At the inclusion

• Prevalence of gingival phenotypes (keratinised tissue height)

  Evaluation of keratinised tissue height of the lower and upper incisors with UNC-15 peridontal probe (mm) and clinical photography.

  At the inclusion

• Prevalence of gingival phenotypes (Photography)

  Description of the gingiva

  At the inclusion

Secondary Outcomes (2)

• Associated risk indicators for thin gingival phenotype ( Clinical description)

  At the inclusion

• Associated risk indicators for thin gingival phenotype ( orthodontic and facial characteristics )

  At the inclusion

Interventions

Evaluation of the gingival phenotype of the incisors in the upper and lower jaws OTHER

Assessment of gingival thickness (Kan et al 2015) and keratinised tissue height of the incisors with UNC-15 peridontal probe (Hu-Freidy, USA) and clinical photography.

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Probability Sample

Study Population

Dental students at the university hospitals of Nice and Nancy (France)

You may qualify if:

• Age (18 years old or older),
• Dental student on the university hospitals of Nice and Nancy.
• Social security affiliate.
• Systemically healthy.
• Healthy and intact periodontium.
• Informed consent.

You may not qualify if:

• Pregnancy.
• Under any regular medical treatment.
• Active periodontal disease.
• Enduring orthodontic treatment.
• Periodontal surgery in the mandibulary anterior region.
• Non consent patient.
• Patient under judgment trials.

Sponsors & Collaborators

• Centre Hospitalier Universitaire de Nice: lead

Study Sites (1)

CHU NICE

Nice, Alpes Maritimes, 06000, France

Location

Central Study Contacts

:Sophie-Myriam D Dridi

CONTACT

06 19 29 92 08; s@chu-nice.fr

:Carole Charavet

CONTACT

06 78 11 97 70; charavet.c@chu-nice.fr

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: May 13, 2025
• First Posted: May 21, 2025
• Study Start: July 1, 2025
• Primary Completion (Estimated): July 1, 2026
• Study Completion (Estimated): July 1, 2026
• Last Updated: May 21, 2025

Record last verified: 2025-05

Locations

FR (1)