Research Summary
Analyzed using Evidence Intelligence™

aPDT improves periodontal health in Type 2 diabetes patients

Last updated August 16, 2026

Key finding

PI decreased from 2.35 ± 0.28 at baseline to 1.32 ± 0.22 at 3 months.

This study evaluated the efficacy of antimicrobial photodynamic therapy (aPDT) as an adjunct to scaling and root planing in patients with chronic periodontitis and type 2 diabetes mellitus, showing significant improvements in various periodontal parameters.

Quick read

Study at a glance

The essential study design details in one scan.

EvidenceScore™

Moderate

Study type

RCTs

Follow-up

Medium-Term (3–12 mo)

Risk of bias

Some Concerns

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Plain-language summary

What this paper says

A plain-language read of the study’s main message and where it applies.

Study focus

This study evaluated the efficacy of antimicrobial photodynamic therapy (aPDT) as an adjunct to scaling and root planing in patients with chronic periodontitis and type 2 diabetes mellitus, showing significant improvements in various periodontal parameters.

Clinical relevance

Improving periodontal health in patients with diabetes is crucial, as periodontal disease can exacerbate diabetes complications. This study suggests that incorporating aPDT into standard treatment may enhance outcomes for patients suffering from both chronic periodontitis and type 2 diabetes, potentially leading to better overall health and quality of life.

Keep in mind

Limited sample size may affect generalizability Short follow-up period of 3 months No significant changes in HbA1c levels observed

Published in

Journal Reference

Publication details and source links for this paper.

Priyanka A, Pratibha S, Rakshitha S. Efficacy of Antimicrobial Photodynamic Therapy Using Indocyanine Green as an Adjunct to Scaling and Root Planing in Patients with Chronic Periodontitis and Type 2 Diabetes Mellitus. Journal of Oral Biology and Craniofacial Research. 2025;15(3):525-533. doi:10.1016/j.jobcr.2025.03.004

Main Effects

Plaque index decreased from 2.35 to 1.32 (p=0.001)

Gingival index decreased from 2.20 to 1.02 (p=0.001)

Probing depth decreased from 3.70 mm to 1.24 mm (p=0.001)

Clinical attachment level decreased from 6.76 mm to 2.81 mm (p=0.001)

Evidence network

How this study fits

Understand where this research contributes within the broader evidence network.

Evidence Context

This study contributes evidence to Antimicrobial photodynamic therapy (aPTD) and Clinical attachment level, Colony forming units of Aggregatibacter actinomycetemcomitans (Aa), Colony forming units of Porphyromonas gingivalis (Pg), and 4 more.

Primary intervention

Antimicrobial photodynamic therapy (aPTD)

Primary outcomes

  • Clinical attachment level
  • Colony forming units of Aggregatibacter actinomycetemcomitans (Aa)
  • Colony forming units of Porphyromonas gingivalis (Pg)

Evidence relationships

Intervention and outcome relationships this study adds to the evidence network.

7
Evidence pairs
7
Relationships
1
Evidence topics
contributes_evidence

Editorial context

Why this study matters

See why this paper is useful beyond its individual results.

Evidence network role

This section describes how the study fits into the current evidence network. It does not determine whether an intervention works on its own.

Moderate contributionModerate confidenceNetwork score: 63

1

Related topics

7

Evidence pairs

348

Related studies

High relevance in at least one topic

Why it is useful

  • Contributes to 7 evidence relationships
  • Includes primary outcome data
  • Linked to 1 direct semantic evidence topic

Topic contributions

Evidence topic

Contributes evidence

Add related evidence to your Evidence Tracker

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Primary evidence

Evidence topic

HbA1c Reduction

matched_outcome

Core evidence

Study findings

The primary outcomes reported in this study.

Clinical attachment level

Antimicrobial photodynamic therapy (aPTD) → Clinical attachment level

Antimicrobial photodynamic therapy (aPTD) → Clinical attachment level

Evidence Intelligence™
EvidenceScore™
Moderate
Score 69 · Based on 2 studies
ImpactScore™
100
Very Positive
ConsistencyScore™
100
consistent
Supporting studies: Based on 2 studies
Add to Evidence Tracker

Colony forming units of Aggregatibacter actinomycetemcomitans (Aa)

Antimicrobial photodynamic therapy (aPTD) → Colony forming units of Aggregatibacter actinomycetemcomitans (Aa)

Antimicrobial photodynamic therapy (aPTD) → Colony forming units of Aggregatibacter actinomycetemcomitans (Aa)

Evidence Intelligence™
EvidenceScore™
Emerging
Score 59 · Based on 1 study
ImpactScore™
100
Very Positive
ConsistencyScore™
unclear
Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence Tracker

Colony forming units of Porphyromonas gingivalis (Pg)

Antimicrobial photodynamic therapy (aPTD) → Colony forming units of Porphyromonas gingivalis (Pg)

Antimicrobial photodynamic therapy (aPTD) → Colony forming units of Porphyromonas gingivalis (Pg)

Evidence Intelligence™
EvidenceScore™
Emerging
Score 59 · Based on 1 study
ImpactScore™
100
Very Positive
ConsistencyScore™
unclear
Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence Tracker

Gingival Index (GI)

Antimicrobial photodynamic therapy (aPTD) → Gingival Index (GI)

Antimicrobial photodynamic therapy (aPTD) → Gingival Index (GI)

Evidence Intelligence™
EvidenceScore™
Emerging
Score 59 · Based on 1 study
ImpactScore™
100
Very Positive
ConsistencyScore™
unclear
Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence Tracker

HbA1c

Antimicrobial photodynamic therapy (aPTD) → HbA1c

Antimicrobial photodynamic therapy (aPTD) → HbA1c

Evidence Intelligence™
EvidenceScore™
Moderate
Score 69 · Based on 2 studies
ImpactScore™
50
Neutral
ConsistencyScore™
100
consistent
Supporting studies: Based on 2 studies
Add to Evidence Tracker

Periodontal probing depth

Antimicrobial photodynamic therapy (aPTD) → Periodontal probing depth

Antimicrobial photodynamic therapy (aPTD) → Periodontal probing depth

Evidence Intelligence™
EvidenceScore™
Moderate
Score 69 · Based on 2 studies
ImpactScore™
100
Very Positive
ConsistencyScore™
100
consistent
Supporting studies: Based on 2 studies
Add to Evidence Tracker

Plaque Index (PI)

Antimicrobial photodynamic therapy (aPTD) → Plaque Index (PI)

Antimicrobial photodynamic therapy (aPTD) → Plaque Index (PI)

Evidence Intelligence™
EvidenceScore™
Emerging
Score 59 · Based on 1 study
ImpactScore™
100
Very Positive
ConsistencyScore™
unclear
Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence Tracker

Evidence Library

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evidence suggest

Evidence Suggest

  • Plaque index reduced significantly by 1.03 units (p=0.001)
  • Gingival index improved by 1.18 units (p=0.001)
  • Probing depth decreased by 2.46 mm (p=0.001)
who this applies

Who this applies to

  • Adults with chronic periodontitis
  • Patients diagnosed with type 2 diabetes mellitus
keep in mind

Keep in Mind

  • Results may not apply to populations outside the study sample
  • Further long-term studies are needed to assess durability of effects
  • The study did not measure other potential confounding factors
between the lines

Between the Lines

  • Limited sample size may affect generalizability
  • Short follow-up period of 3 months
  • No significant changes in HbA1c levels observed

Evidence Library

Build your evidence library

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Connected Evidence

Explore related studies, evidence collections, and research questions.

Relationships organized using the Dediabetes Evidence Intelligence™ framework.

This study contributes to evidence on Antimicrobial photodynamic therapy (aPTD) and Clinical attachment level, Antimicrobial photodynamic therapy (aPTD) and HbA1c.

Related evidence relationships

Explore in Evidence Explorer

This study contributes to the evidence on the following intervention-outcome relationships.

Questions answered by this study

Generated from the study's connected evidence using Evidence Intelligence™.

Does Antimicrobial photodynamic therapy (aPTD) improve clinical attachment level?

Moderate Evidence

Antimicrobial photodynamic therapy (aPTD) appears to improve Clinical attachment level.

ConsistencyScore™: Results are consistent across studies.

Ranked evidence signals

  1. 1

    Clinical attachment level

    EvidenceScore™ Moderate | EvidenceScore™ 69.0 | strong positive | ConsistencyScore™ Consistent | 1 study

Why this answer: This answer is based on a single supporting study.

Limitations

  • Only one supporting study is available.
  • Population details are unavailable.
1 supporting studyUpdated: Aug 2026

Does Antimicrobial photodynamic therapy (aPTD) improve periodontal probing depth?

Moderate Evidence

Antimicrobial photodynamic therapy (aPTD) appears to improve Periodontal probing depth.

ConsistencyScore™: Results are consistent across studies.

Ranked evidence signals

  1. 1

    Periodontal probing depth

    EvidenceScore™ Moderate | EvidenceScore™ 69.0 | strong positive | ConsistencyScore™ Consistent | 1 study

Why this answer: This answer is based on a single supporting study.

Limitations

  • Only one supporting study is available.
  • Population details are unavailable.
1 supporting studyUpdated: Aug 2026

Does Antimicrobial photodynamic therapy (aPTD) improve HbA1c?

Moderate Evidence

Current evidence does not show a clear benefit of Antimicrobial photodynamic therapy (aPTD) for HbA1c.

ConsistencyScore™: Results are consistent across studies.

Ranked evidence signals

  1. 1

    HbA1c

    EvidenceScore™ Moderate | EvidenceScore™ 69.0 | neutral | ConsistencyScore™ Consistent | 1 study

Why this answer: This answer is based on a single supporting study.

Limitations

  • Only one supporting study is available.
  • Population details are unavailable.
1 supporting studyUpdated: Aug 2026

Does Antimicrobial photodynamic therapy (aPTD) improve colony forming units of aggregatibacter actinomycetemcomitans (aa)?

Emerging Evidence

Antimicrobial photodynamic therapy (aPTD) appears to improve Colony forming units of Aggregatibacter actinomycetemcomitans (Aa).

ConsistencyScore™: Consistency cannot yet be determined from the available evidence.

Ranked evidence signals

  1. 1

    Colony forming units of Aggregatibacter actinomycetemcomitans (Aa)

    EvidenceScore™ Emerging | EvidenceScore™ 59.0 | strong positive | ConsistencyScore™ Unclear | 1 study

Why this answer: This answer is based on a single supporting study.

Limitations

  • Only one supporting study is available.
  • Consistency cannot yet be determined.
  • Population details are unavailable.
1 supporting studyUpdated: Aug 2026
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