Evaluation of Salivary Biomarker Levels of Individuals With Different Periodontal Diseases

Assessment of Saliva Leucine Rich α-2 Glycoprotein1 (LRG1) And C Reactive Protein (CRP) Levels In Individuals With Different Periodontal Diseases

The aim of this study is; detection of leucine rich α-2 glycoprotein1 (LRG1), c-reactive protein (CRP) levels in saliva samples of periodontally healthy, gingivitis and periodontitis patients and the possible correlation between these values and clinical parameters of periodontal diseases. Materials and methods: Samples of saliva were obtained from 60 systemically healthy non-smoker individuals with periodontitis (P, n=20), gingivitis(G, n=20) and healthy periodontium (S, n=20). Full-mouth clinical periodontal measurements including probing depth (PD), clinical attachment level (CAL), bleeding on probing (BOP), gingival index (GI) and plaque index (PI) were also recorded. Enzyme-linked immunosorbent assay (ELISA) was used to determine LRG and CRP levels in the biological samples.

Study Overview

• Status: Completed
• Conditions: Periodontal Diseases
• Intervention / Treatment: Diagnostic test: saliva obtaining

• Study Type: Interventional
• Enrollment (Actual): 60
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Turkey
  • Çiğli
    • İzmir, Çiğli, Turkey, 35640
      • Izmir Katip Çelebi University Department of Periodontology

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 20 years to 60 years (Adult)
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• Systemically healthy (The determination of healthy volunteers will be based on the statements of the patients in the anamnesis. No additional examinations will be made.)
• At least twenty permanent teeth in the mouth
• Non-smoker
• No medication for continuous use
• Those who have not used antibiotics, anti-inflammatory and systemic corticosteroid drugs in the last 6 months.
• Not in pregnancy or lactation period.
• For the periodontitis group that has not received periodontal treatment in the last 6 months
• For the periodontitis group; According to the evaluation made in 6 regions of each tooth, individuals with 30% or more bleeding on probing area, at least 2 teeth not adjacent to each quarter jaw with a depth of 5 mm or more and 4 mm or more attachment loss, coronal 1/3 and more on radiography (horizontal and / or vertical) bone loss
• For the gingivitis group; According to the evaluation made in 6 regions of each tooth, individuals with 10% or more bleeding on probing area, having a probing depth of less than 4mm and no attachment loss
• For healthy group; According to the evaluation made in 6 regions of each tooth,individuals with less than 10% bleeding on probing area, having a probing depth less than 4mm and no loss of attachment were included in the study.

Exclusion Criteria:

• Any oral or systemic disease
• Regularly using a systemic medication
• During pregnancy or lactation
• Received periodontal treatment within the last 6 months.
• Those who received antibiotic, anti-inflammatory or systemic corticosteroid medication in the last 6 months
• Smokers are not included in the study

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Diagnostic
• Allocation: Non-Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Healthy Periodontium; Full-mouth clinical periodontal measurements recorded and saliva obtained.	Diagnostic test: saliva obtaining; The patient was asked to sit upright and tilt his/her head forward to collect saliva samples. İn this way, unstimulated saliva was allowed to accumulate in the floor of the mouth. The accumulated saliva was collected in a sterile container. It was then transferred to a propylene tube. The tubes were centrifuged and the clear part at the top of the tube was taken with a sterile syringe and transferred to a different propylene tube with 0.5 ml in each tube. Tubes were stored at -80ºC until the day of analysis.
Experimental: Gingivitis; Full-mouth clinical periodontal measurements recorded and saliva obtained.	Diagnostic test: saliva obtaining; The patient was asked to sit upright and tilt his/her head forward to collect saliva samples. İn this way, unstimulated saliva was allowed to accumulate in the floor of the mouth. The accumulated saliva was collected in a sterile container. It was then transferred to a propylene tube. The tubes were centrifuged and the clear part at the top of the tube was taken with a sterile syringe and transferred to a different propylene tube with 0.5 ml in each tube. Tubes were stored at -80ºC until the day of analysis.
Experimental: Periodontitis; Full-mouth clinical periodontal measurements recorded and saliva obtained.	Diagnostic test: saliva obtaining; The patient was asked to sit upright and tilt his/her head forward to collect saliva samples. İn this way, unstimulated saliva was allowed to accumulate in the floor of the mouth. The accumulated saliva was collected in a sterile container. It was then transferred to a propylene tube. The tubes were centrifuged and the clear part at the top of the tube was taken with a sterile syringe and transferred to a different propylene tube with 0.5 ml in each tube. Tubes were stored at -80ºC until the day of analysis.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
The total amount of LRG1 in saliva	The total amount of leucine rich α-2 glycoprotein1 in saliva	24 hours after taking the clinical measurements at the first visit
The total amount of CRP in saliva	The total amount of C-reactive protein in saliva	24 hours after taking the clinical measurements at the first visit

Collaborators and Investigators

• Sponsor: Izmir Katip Celebi University
• Investigators: Study Director: Mehmet Sağlam, Izmir Katip Celebi University

Study record dates

Study Major Dates

• Study Start (Actual): December 8, 2021
• Primary Completion (Actual): March 20, 2023
• Study Completion (Actual): April 10, 2023

Study Registration Dates

• First Submitted: March 7, 2023
• First Submitted That Met QC Criteria: March 7, 2023
• First Posted (Actual): March 20, 2023

Study Record Updates

• Last Update Posted (Estimate): April 13, 2023
• Last Update Submitted That Met QC Criteria: April 12, 2023
• Last Verified: April 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Stomatognathic Diseases; Mouth Diseases; Periodontal Diseases
• Other Study ID Numbers: 2021-TDU-DİŞF-0016

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Sharing Supporting Information Type: STUDY_PROTOCOL; SAP; ICF

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No