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Updated: Jan 23, 2026

Detection of Functional Matrix Metalloproteinases by Zymography
Published on: November 8, 2010
Investigation of active matrix- metaloproteinase-8 (aMMP-8) as a reference parameter for path control in
J Deumer1, M Frentzen2, M C Meinke3
1MVZ Erstes Zahnärztliches Lasercentrum Berlin, Gatower Straße 296, 14089 Berlin, Germany.
Objectives:
This retrospective data-collection study aims to explain how the active matrix-metalloproteinase-8-titer (aMMP-titer) influences the immune response of the subject. This is done through monotherapy scaling and root planing (SRP) which is then compared to SRP combined with antimicrobial photothermal therapy (aPTT, Emundo®).
Methods:
Data collection was monocentric, randomized and split-mouth based. A study group of twenty patients with chronic periodontal disease with a periodontal pocket depth (PPD) 4 mm ≤ PPD ≤8 mm, a periodontal screening index (PSI: > 3), and a gingival recession ≤2 mm were selected.A diode laser, manufactured by A.R.C. Laser GmbH, with 810 nm wavelength was used. This device implemented three different light transmission systems for transgingival and intra-gingival irradiation. Power settings between 200 and 300 mW were deployed for 10 s during all treatment steps. The photothermic dye of EmunDo® system (A.R.C. Laser GmbH) was infracyaningreen.The adjuvant effect of the antimicrobial photothermal therapy (aPTT) with EmunDo® in combination with conventional SRP on the teeth 15 and 35 was compared with the results of monotherapy SRP on teeth 25 and 45.
Results:
A reduction of the aMMP-8-titer in gingival crevicular fluid (GCF) was observed in both groups (follow up group and control group) after one month. However; the decrease in the follow up group under SRP in combination with aPTT was significantly more pronounced. The periodontal pocket depths was reduced in both treatment groups. The periodontal probing depth (in mm) shows a larger decrease of the periodontal pocket depth within the follow up group (SPR with aPTT) compared with the control group (SRP).
Conclusion:
The aMMP-8-titer showed differences in both groups prior to and after treatment. Active matrix-metalloproteinase-8 (aMMP-8) as a reference parameter for path control in antimicrobial photothermal therapy (aPTT) seems acceptable.
Insights
Antimicrobial photothermal therapy (aPTT) combined with scaling and root planing (SRP) significantly reduced active matrix-metalloproteinase-8 (aMMP-8) levels and periodontal pocket depth more than SRP alone. This indicates a enhanced immune response in periodontal disease treatment.
Area of Science:
- Periodontology
- Biomaterials Science
- Laser Dentistry
Background:
- Chronic periodontal disease is characterized by inflammation and tissue destruction.
- Active matrix-metalloproteinase-8 (aMMP-8) is a key biomarker for periodontal disease activity.
- Current treatments like scaling and root planing (SRP) aim to reduce bacterial load and inflammation.
Purpose of the Study:
- To evaluate the influence of active matrix-metalloproteinase-8 titer (aMMP-titer) on the immune response.
- To compare monotherapy SRP with SRP combined with antimicrobial photothermal therapy (aPTT, Emundo®).
Main Methods:
- Retrospective, monocentric, randomized, split-mouth study design.
- Twenty patients with chronic periodontal disease (PPD 4-8 mm, PSI > 3, recession ≤2 mm) were included.
- Diode laser (810 nm) with EmunDo® photothermic dye was used for aPTT, combined with SRP on specific teeth, compared to SRP monotherapy on contralateral teeth.
Main Results:
- Both treatment groups showed a reduction in aMMP-8 titer and periodontal pocket depth after one month.
- The combination of SRP with aPTT demonstrated a significantly more pronounced decrease in aMMP-8 titer and periodontal pocket depth compared to SRP monotherapy.
- aMMP-8 levels differed between groups pre- and post-treatment.
Conclusions:
- Antimicrobial photothermal therapy (aPTT) in conjunction with SRP enhances the reduction of periodontal disease markers.
- aMMP-8 serves as an acceptable reference parameter for monitoring treatment efficacy in aPTT.
- The findings support aPTT as an effective adjunct therapy for periodontal disease.
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