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Salivary Free Amino Acid Profiles in Periodontitis: Associations With Clinical Parameters and Dynamic Responses to Non Surgical Therapy (FAA-CP-SRP)

19 giugno 2026 aggiornato da: Zhang, Yuwei

A Cross-Sectional and Prospective Cohort Study of Salivary Free Amino Acid Profiles in Patients With Periodontal Health, Gingivitis and Periodontitis: Associations With Clinical Parameters and Dynamic Responses to Non-Surgical Periodontal Therapy

# Brief Summary (Word count: 198)

This combined observational and interventional study investigates salivary amino acid profiles and their connections to periodontal conditions, as well as how these substances change after standard non-surgical gum treatment. It recruits adults aged 20 to 50, including healthy volunteers, people with gingivitis and periodontitis. The study is approved by the institutional ethics committee with the ID WCHSIRB-D-2023-370. The main questions it aims to answer are:

Do salivary free amino acid levels differ across people with healthy gums, gingivitis and periodontitis? Are changes in salivary branched-chain amino acids related to improved gum health after treatment?

Researchers compare three groups in the observational part and track periodontitis patients to assess treatment effects. All participants go through eligibility screening, full periodontal checks and morning saliva collection. 45 participants complete only one baseline visit. Another 32 periodontitis patients receive standard therapy and return for re-examinations at 6 and 12 weeks. Saliva samples are tested for amino acid concentrations. Statistical analysis will explore the correlation between salivary markers and gum conditions. The results may aid clinical evaluation and management of periodontal diseases.

Panoramica dello studio

Tipo di studio

Interventistico

Iscrizione (Effettivo)

77

Fase

  • Non applicabile

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Luoghi di studio

    • Sichuan
      • Chengdu, Sichuan, Cina, 610041
        • West China Hospital of Stomatology, Sichuan University

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Adulto

Accetta volontari sani

Descrizione

Inclusion Criteria:

  • Age between 20 and 50 years old at the time of enrollment.
  • Body mass index (BMI) between 18.5 and 24.0 kg/m².
  • No special dietary habits (e.g., long-term vegetarian diet, extreme dieting) and no food allergies.
  • Body weight fluctuation less than 3 kg in the past 6 months before enrollment.
  • At least 20 natural teeth remaining in the oral cavity (excluding third molars).
  • Able to understand and sign the written informed consent form voluntarily.
  • Able to attend all scheduled follow-up visits as required.
  • For participants in the interventional arm: diagnosed with periodontitis according to the 2018 International Classification of Periodontal and Peri-Implant Diseases and Conditions.

Exclusion Criteria:

  • Systemic diseases such as diabetes mellitus, rheumatoid arthritis, or immunodeficiency disorders.
  • Use of antibiotics, anti-inflammatory drugs, or antioxidant medications within 3 months before enrollment.
  • Received any form of periodontal treatment (e.g., scaling, root planing, periodontal surgery) within 6 months before enrollment.
  • Long-term use of medications known to affect gingival health, including calcium channel blockers, phenytoin, cyclosporine, or hormone replacement therapy drugs.
  • History of smoking (current or former smokers) or use of tobacco products within the past 5 years.
  • Pregnant or lactating women.
  • Presence of severe oral mucosal diseases or active dental caries requiring immediate treatment.
  • Participation in other interventional clinical trials within the past 30 days.
  • Mental or cognitive disorders that may affect the ability to comply with study procedures.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Diagnostico
  • Assegnazione: N / A
  • Modello interventistico: Assegnazione di gruppo singolo
  • Mascheramento: Nessuno (etichetta aperta)

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: Non-Surgical Periodontal Therapy Group
Participants in this experimental arm receive standardized non-surgical periodontal therapy. The treatment includes personalized oral hygiene instruction and quadrant-wise scaling and root planing, performed once weekly following the European Federation of Periodontology (EFP) clinical practice guidelines. Post-treatment follow-up assessments, including full-mouth periodontal examinations and unstimulated saliva collection, are scheduled at 6 weeks and 12 weeks after therapy completion to evaluate clinical outcomes and salivary amino acids changes.
Standardized non-surgical periodontal therapy, including personalized oral hygiene instruction and quadrant-wise scaling and root planing, is provided once weekly following the European Federation of Periodontology (EFP) clinical practice guidelines. The goal is to remove supra- and subgingival plaque and calculus to reduce periodontal inflammation.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Change in Salivary Branched-Chain Amino Acid (BCAA) Concentrations from Baseline to 12 Weeks Post-Treatment
Lasso di tempo: Baseline (pre-treatment) and 12 weeks post-treatment
Salivary concentrations of branched-chain amino acids (BCAAs: leucine, isoleucine, valine) will be measured using liquid chromatography-tandem mass spectrometry (LC-MS/MS) at three time points: baseline (pre-treatment), 6 weeks post-treatment, and 12 weeks post-treatment. The primary outcome is the mean change in BCAA levels from baseline to the 12-week follow-up, reflecting the long-term metabolic response to non-surgical periodontal therapy.
Baseline (pre-treatment) and 12 weeks post-treatment

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Change in Mean Probing Depth (PD) from Baseline to 12 Weeks Post-Treatment
Lasso di tempo: Baseline (pre-treatment) and 12 weeks post-treatment
Probing depth (PD) will be measured at six sites per tooth using a calibrated UNC-15 periodontal probe at baseline and 12 weeks post-treatment. The mean change in PD from baseline to 12 weeks will be calculated to assess the improvement in periodontal pocket depth after therapy.
Baseline (pre-treatment) and 12 weeks post-treatment
Change in Mean Clinical Attachment Level (CAL) from Baseline to 12 Weeks Post-Treatment
Lasso di tempo: Baseline (pre-treatment) and 12 weeks post-treatment
Clinical attachment level (CAL) will be measured at six sites per tooth using a calibrated periodontal probe at baseline and 12 weeks post-treatment. The mean change in CAL from baseline to 12 weeks will be evaluated to reflect improvements in periodontal attachment support.
Baseline (pre-treatment) and 12 weeks post-treatment
Change in Bleeding on Probing Percentage (BOP%) from Baseline to 12 Weeks Post-Treatment
Lasso di tempo: Baseline (pre-treatment) and 12 weeks post-treatment
Bleeding on probing (BOP) will be recorded as present or absent at six sites per tooth during periodontal examinations at baseline and 12 weeks post-treatment. The percentage of bleeding sites (BOP%) will be calculated, and the change from baseline to 12 weeks will be analyzed to assess reductions in periodontal inflammation.
Baseline (pre-treatment) and 12 weeks post-treatment
Change in Mean Probing Depth (PD) from Baseline to 6 Weeks Post-Treatment
Lasso di tempo: Baseline (pre-treatment) and 6 weeks post-treatment
Probing depth (PD) will be measured at six sites per tooth at baseline and 6 weeks post-treatment. The mean change in PD from baseline to 6 weeks will be analyzed to evaluate the early clinical response to non-surgical periodontal therapy.
Baseline (pre-treatment) and 6 weeks post-treatment

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Effettivo)

1 novembre 2023

Completamento primario (Effettivo)

5 ottobre 2024

Completamento dello studio (Effettivo)

5 ottobre 2024

Date di iscrizione allo studio

Primo inviato

19 giugno 2026

Primo inviato che soddisfa i criteri di controllo qualità

19 giugno 2026

Primo Inserito (Effettivo)

25 giugno 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

25 giugno 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

19 giugno 2026

Ultimo verificato

1 giugno 2026

Maggiori informazioni

Termini relativi a questo studio

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Descrizione del piano IPD

Individual participant data (IPD) will not be shared with other researchers due to restrictions from the institutional review board (IRB) and hospital data management policies, which are designed to protect patient privacy and confidentiality. The aggregated results of this study will be published in peer-reviewed journals.

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

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