Evidence map›Paper›PMID 39186925›Full record

SynthesisCaries research2025

Association of Molar Incisor Hypomineralization with Hypomineralized Second Primary Molars: An Updated Systematic Review with a Meta-Analysis and Trial Sequential Analysis.

Zhaoxin Zhang, Yueying Liu, Yaxin Zhu, Jingya Guo, Mingzhen Yang, Yang Lu, Yimeng Zhang, Jie Jia

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in Caries research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Trends in the prevalence of molar incisor hypomineralisation between 2018 and 2023: a comparison of two cross-sectional studies in elementary schools in Mexico.European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Zhaoxin ZhangThe First Affiliated Hospital of Henan University, Henan University School of Stomatology, Kaifeng, China, zhangzhaoxin98@163.com.
Yueying LiuThe First Affiliated Hospital of Henan University, Henan University School of Stomatology, Kaifeng, China.
Yaxin ZhuThe First Affiliated Hospital of Henan University, Henan University School of Stomatology, Kaifeng, China.
Jingya GuoThe First Affiliated Hospital of Henan University, Henan University School of Stomatology, Kaifeng, China.
Mingzhen YangThe First Affiliated Hospital of Henan University, Henan University School of Stomatology, Kaifeng, China.
Yang LuThe First Affiliated Hospital of Henan University, Henan University School of Stomatology, Kaifeng, China.
Yimeng ZhangThe First Affiliated Hospital of Henan University, Henan University School of Stomatology, Kaifeng, China.
Jie JiaThe First Affiliated Hospital of Henan University, Henan University School of Stomatology, Kaifeng, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThere is a correlation between molar incisor hypomineralization (MIH) and hypomineralized second primary molars (HSPM), but this relationship has not been definitively confirmed. The purpose of this systematic review and meta-analysis was to reevaluate whether children with HSPM are more affected by MIH than non-HSPM children.

methodsA systematic search was conducted in four databases (PubMed, Embase, Web of Science, and the Cochrane Library) for literature, published up to December 2022. Two independent reviewers conducted the study search and screening, quality assessment, and data extraction according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. The risk-of-bias assessment of all included cohort studies and case-control studies was assessed by the Newcastle-Ottawa Scale (NOS), and cross-sectional studies were assessed using the Agency for Healthcare Research Quality (AHRQ) scale. RevMan 5.4 software was used for all data analyses, with odds ratios (ORs) and 95% confidence intervals (CIs) as the effect measures. Sensitivity and subgroup analyses were conducted to identify the potential sources of heterogeneity among the studies. Publication bias was tested and corrected by funnel plots and Egger's test. Trial sequential analysis (TSA) was performed using TSA 0.9.5.10 Beta software to control for type-1 and type-2 errors.

resultsA total of 12 studies involving 8,944 children were included in this meta-analysis. Compared with the non-HSPM group, the HSPM group had an increased likelihood of MIH (OR = 10.90, 95% CI = 4.59-25.89, p < 0.05). All the included studies were of moderate-to-high quality. TSA and sensitivity analyses suggested the robustness of this outcome.

conclusionThis systematic review demonstrated a certain correlation between HSPM and MIH, suggesting that HSPM can play a predictive role in the occurrence of MIH. Further high-quality, multicenter, and large-sample longitudinal studies are highly recommended.

introductionThere is a correlation between molar incisor hypomineralization (MIH) and hypomineralized second primary molars (HSPM), but this relationship has not been definitively confirmed. The purpose of this systematic review and meta-analysis was to reevaluate whether children with HSPM are more affected by MIH than non-HSPM children.

methodsA systematic search was conducted in four databases (PubMed, Embase, Web of Science, and the Cochrane Library) for literature, published up to December 2022. Two independent reviewers conducted the study search and screening, quality assessment, and data extraction according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. The risk-of-bias assessment of all included cohort studies and case-control studies was assessed by the Newcastle-Ottawa Scale (NOS), and cross-sectional studies were assessed using the Agency for Healthcare Research Quality (AHRQ) scale. RevMan 5.4 software was used for all data analyses, with odds ratios (ORs) and 95% confidence intervals (CIs) as the effect measures. Sensitivity and subgroup analyses were conducted to identify the potential sources of heterogeneity among the studies. Publication bias was tested and corrected by funnel plots and Egger's test. Trial sequential analysis (TSA) was performed using TSA 0.9.5.10 Beta software to control for type-1 and type-2 errors.

resultsA total of 12 studies involving 8,944 children were included in this meta-analysis. Compared with the non-HSPM group, the HSPM group had an increased likelihood of MIH (OR = 10.90, 95% CI = 4.59-25.89, p < 0.05). All the included studies were of moderate-to-high quality. TSA and sensitivity analyses suggested the robustness of this outcome.

conclusionThis systematic review demonstrated a certain correlation between HSPM and MIH, suggesting that HSPM can play a predictive role in the occurrence of MIH. Further high-quality, multicenter, and large-sample longitudinal studies are highly recommended.

Indexed as

Dental Enamel HypoplasiaMolarTooth, DeciduousChildHumansMolar HypomineralizationHypomineralized second primary molarsMeta-analysisMolar incisor hypomineralizationTrial sequential analysis

Identifiers

PMID39186925
PMCPMC11793096

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.