Research Summary
Analyzed using Evidence Intelligence™

Nonsurgical Periodontal Treatment Improves Oral Self-Care in Diabetes Patients

Last updated July 22, 2026

Key finding

The EG exhibited greater improvement in probing pocket depth (β = -0.2, ES = 0.61) at 1-month follow-up than the CG did.

This study evaluated the impact of nonsurgical periodontal treatment combined with a community health worker strategy on oral self-care behaviors in patients with Type 2 Diabetes Mellitus.

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 impact of nonsurgical periodontal treatment combined with a community health worker strategy on oral self-care behaviors in patients with Type 2 Diabetes Mellitus.

Clinical relevance

Improving oral health in patients with diabetes is crucial, as it can lead to better overall health outcomes. This study highlights the effectiveness of integrating community health workers into periodontal care, which may enhance patient engagement and self-management of oral health.

Keep in mind

The effectiveness of the intervention remains unclear due to limited data. Sample size and generalizability of findings may be constrained. No significant changes in HbA1c levels were observed.

Published in

Journal Reference

Publication details and source links for this paper.

Yuan-Jung H, Yi-Hui C, Kun-Der L, et al. The Effects of Nonsurgical Periodontal Treatment with Community Health Worker Strategy on Oral Self-Care Behaviors in Patients with Type 2 Diabetes Mellitus. International Journal of Environmental Research and Public Health. 2021;18(16):8371. doi:10.3390/ijerph18168371

Main Effects

The intervention group showed a decrease in periodontal probing depth by -0.2 mm at 1-month follow-up.

Clinical attachment levels improved by -0.2 mm in the intervention group at 1-month follow-up.

Oral health-related quality of life increased in the intervention group, with effect sizes of 0.19, 0.60, and 0.62 at 1, 3, and 6 months, respectively.

Evidence network

How this study fits

Understand where this research contributes within the broader evidence network.

Evidence Context

This study contributes evidence to Non-surgical periodontal treatment and Clinical attachment level, Diabetes self-management behaviors, HbA1c, and 2 more.

Primary intervention

Non-surgical periodontal treatment

Primary outcomes

  • Clinical attachment level
  • Diabetes self-management behaviors
  • HbA1c

Evidence relationships

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

5
Evidence pairs
5
Relationships
2
Evidence topics
contributes_evidence

Editorial context

Why this study matters

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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: 64

2

Related topics

5

Evidence pairs

380

Related studies

High relevance in at least one topic

Why it is useful

  • Contributes to 5 evidence relationships
  • Includes primary outcome data
  • Linked to 2 direct semantic evidence topics

Topic contributions

Evidence topic

Contributes evidence

Evidence topic

Contributes evidence

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Primary evidence

Evidence topic

HbA1c Reduction

matched_outcome

Related evidence

Evidence topic

Treatment Adherence

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Core evidence

Study findings

The primary outcomes reported in this study.

Clinical attachment level

Non-surgical periodontal treatment → Clinical attachment level

Non-surgical periodontal treatment → Clinical attachment level

Evidence Intelligence™
EvidenceScore™
84
Strong
ImpactScore™
76
Positive
ConsistencyScore™
75
consistent
Supporting studies: Based on 10 studies
Add to Evidence Tracker

Diabetes self-management behaviors

Non-surgical periodontal treatment → Diabetes self-management behaviors

Non-surgical periodontal treatment → Diabetes self-management behaviors

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

Non-surgical periodontal treatment → HbA1c

Non-surgical periodontal treatment → HbA1c

Evidence Intelligence™
EvidenceScore™
84
Strong
ImpactScore™
70
Positive
ConsistencyScore™
56
generally_consistent
Supporting studies: Based on 10 studies
Add to Evidence Tracker

Health-related quality of life

Non-surgical periodontal treatment → Health-related quality of life

Non-surgical periodontal treatment → Health-related quality of life

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

Periodontal probing depth

Non-surgical periodontal treatment → Periodontal probing depth

Non-surgical periodontal treatment → Periodontal probing depth

Evidence Intelligence™
EvidenceScore™
83
Strong
ImpactScore™
85
Positive
ConsistencyScore™
90
consistent
Supporting studies: Based on 11 studies
Add to Evidence Tracker

Evidence Library

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evidence suggest

Evidence Suggest

  • Improvement in probing depth by -0.2 mm in the intervention group.
  • Clinical attachment level improved by -0.2 mm at 1-month follow-up.
  • Increased oral health-related quality of life with effect sizes of 0.19, 0.60, and 0.62.
who this applies

Who this applies to

  • Adults with Type 2 Diabetes Mellitus.
  • Patients requiring nonsurgical periodontal treatment.
keep in mind

Keep in Mind

  • The study's findings may not be applicable to populations outside the study sample.
  • The lack of significant HbA1c reduction suggests limited impact on glycemic control.
  • Further research is needed to confirm long-term effectiveness.
between the lines

Between the Lines

  • The effectiveness of the intervention remains unclear due to limited data.
  • Sample size and generalizability of findings may be constrained.
  • No significant changes in HbA1c levels were 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 Non-surgical periodontal treatment and Clinical attachment level, Non-surgical periodontal treatment 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 Non-surgical periodontal treatment improve clinical attachment level?

Strong Evidence

Non-surgical periodontal treatment may improve Clinical attachment level.

ConsistencyScore™: Results are consistent across studies.

Ranked evidence signals

  1. 1

    Clinical attachment level

    EvidenceScore™ Strong | EvidenceScore™ 84.4 | moderate 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: Jul 2026

Does Non-surgical periodontal treatment improve HbA1c?

Strong Evidence

Non-surgical periodontal treatment may improve HbA1c.

ConsistencyScore™: Results are generally consistent across studies.

Ranked evidence signals

  1. 1

    HbA1c

    EvidenceScore™ Strong | EvidenceScore™ 83.6 | moderate positive | ConsistencyScore™ Generally 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: Jul 2026

Does Non-surgical periodontal treatment improve periodontal probing depth?

Strong Evidence

Non-surgical periodontal treatment may improve Periodontal probing depth.

ConsistencyScore™: Results are consistent across studies.

Ranked evidence signals

  1. 1

    Periodontal probing depth

    EvidenceScore™ Strong | EvidenceScore™ 83.4 | moderate 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: Jul 2026

Does Non-surgical periodontal treatment improve diabetes self-management behaviors?

Emerging Evidence

Non-surgical periodontal treatment appears to improve Diabetes self-management behaviors.

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

Ranked evidence signals

  1. 1

    Diabetes self-management behaviors

    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: Jul 2026
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