Examination of the Effect of Nd:YAG Laser on Oxidative Stress and Matrix Metalloproteinase-9 in Teeth With Apical Periodontitis

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT07243353

Enrollment

Registered

2025-11-21

Start date

2024-02-01

Completion date

2024-11-08

Last updated

2025-12-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Apical Periodontitis, Oxidative Stress

Keywords

Apical periodontitis, Matrix metalloproteinase-9, Nd:YAG laser, Oxidative stress

Brief summary

The objective of this clinical investigation is to examine the impact of Nd:YAG laser therapy on oxidative stress and matrix metalloproteinase-9 (MMP-9) levels in teeth afflicted with apical periodontitis. Samples were collected from patients who had undergone treatment with the Nd:YAG laser and compared with samples collected from patients who had not received this treatment. The study commenced with a sample of 60 patients. However, the study was completed with 58 patients. The study concluded with the following finding: the use of Nd:YAG lasers was not found to be superior.

Interventions

None listed

Study design

Observational model

CASE_CONTROL

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

25 Years to 50 Years

Healthy volunteers

Inclusion criteria

* Patients aged between 25 and 50 years and classified as American Society of Anesthesiologists (ASA) I. The maxillar and mandibular incisors and premolars with chronic apical periodontitis of a PAI score of 3 or 4 were included.

Exclusion criteria

* Patients with American Society of Anesthesiologists (ASA) classification II or higher, pregnant, patients with localised or generalised periodontitis, patients who had used antibiotics in the last month and anti-inflammatory drugs in the last week, smokers, and teeth with internal or external root resorption, swelling, palpation pain or fistula in the relevant area, root fracture or incomplete root formation, and teeth that could not be isolated with rubber dam were not included in the study.

Design outcomes

Primary

Measure	Time frame	Description
Measurement of TOS, TAOC and MMP-9 levels in periapical exudate and GCF	The initial and seventh days of the treatment period	TOS, TAOC and MMP-9 levels were measured by ELISA in periapical exudate and GCF samples collected during routine root canal treatment in patients with apical periodontitis. No significant difference was detected in the change in biomarker levels between the group treated with the Nd:YAG laser and the control group.

Secondary

Measure	Time frame	Description
Determination of the correlation relationship between TOS, TAOC and MMP-9 levels in periapical exudate and GCF samples	The initial and seventh days of the treatment period	The present study investigated the correlation between periapical exudate and GCF samples. The findings revealed a unidirectional and strong relationship between TOS and TAOC.

Countries

Turkey (Türkiye)

Outcome results