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Effect of mobile phone usage time on total antioxidant capacity of saliva and salivary immunoglobulin a.

Iranian journal of public health · 2014 · Harm · Low evidence

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HarmLow evidencePaper 3020

Mean salivary total antioxidant capacity differed across three mobile phone daily-usage groups (reported means: 657.91, 726.77, and 560.17 µmol/L). A statistically significant difference was reported between two groups (P=0.039), and the authors conclude that…

Study snapshot

PublicationIranian journal of public health · 2014
Study typecross_sectional
Reported directionHarm
Evidence ratingLow

Abstract

BACKGROUND: Nowadays mobile phone is very popular, causing concern about the effect it has on people's health. Parotid salivary glands are in close contact to cell phone while talking with the phone and the possibility of being affected by them. Limited studies have evaluated the effect of cell phone use on the secretions of these glands; so this study was designed to investigate the effects of duration of mobile phone use on the total antioxidant capacity of saliva. METHODS: Unstimulated saliva from 105 volunteers without oral lesions collected. The volunteers based on daily usage of mobile phones were divided into three groups then total antioxidant capacity of saliva was measured by Ferric Reducing Ability of Plasma (FRAP) method. Data were analyzed by SPSS software version 19. ANOVA was used to compare 3 groups and post-hoc Tukey test to compare between two groups. RESULTS: Average total antioxidant capacities of saliva in 3 groups were 657.91 µmol/lit, 726.77 µm/lit and 560.17 µmol/lit, respectively. The two groups had statistically significant different (P = 0.039). CONCLUSION: Over an hour talking with a cell phone decreases total antioxidant capacity of saliva in comparison with talking less than twenty minutes.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typecross_sectional
Effect directionharm
Population105 volunteers without oral lesions
Sample size105
ExposureRF · Daily mobile phone usage time; comparison includes >1 hour talking vs <20 minutes
Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

Mean salivary total antioxidant capacity differed across three mobile phone daily-usage groups (reported means: 657.91, 726.77, and 560.17 µmol/L). A statistically significant difference was reported between two groups (P=0.039), and the authors conclude that talking >1 hour/day decreases total antioxidant capacity compared with talking <20 minutes/day.

Outcomes measured

  • Total antioxidant capacity of saliva (FRAP method)
  • Salivary immunoglobulin A

Limitations

  • Exposure characterized by self-reported daily mobile phone usage time; no objective RF exposure metrics (e.g., frequency, SAR) reported
  • Cross-sectional grouping limits causal inference
  • Group definitions and which specific pairwise comparison(s) were significant are not fully specified in the abstract
  • Although the title mentions salivary immunoglobulin A, results for IgA are not reported in the abstract
View raw extracted JSON
{
  "study_type": "cross_sectional",
  "exposure": {
    "band": "RF",
    "source": "mobile phone",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "Daily mobile phone usage time; comparison includes >1 hour talking vs <20 minutes"
  },
  "population": "105 volunteers without oral lesions",
  "sample_size": 105,
  "outcomes": [
    "Total antioxidant capacity of saliva (FRAP method)",
    "Salivary immunoglobulin A"
  ],
  "main_findings": "Mean salivary total antioxidant capacity differed across three mobile phone daily-usage groups (reported means: 657.91, 726.77, and 560.17 µmol/L). A statistically significant difference was reported between two groups (P=0.039), and the authors conclude that talking >1 hour/day decreases total antioxidant capacity compared with talking <20 minutes/day.",
  "effect_direction": "harm",
  "limitations": [
    "Exposure characterized by self-reported daily mobile phone usage time; no objective RF exposure metrics (e.g., frequency, SAR) reported",
    "Cross-sectional grouping limits causal inference",
    "Group definitions and which specific pairwise comparison(s) were significant are not fully specified in the abstract",
    "Although the title mentions salivary immunoglobulin A, results for IgA are not reported in the abstract"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "mobile phone",
    "saliva",
    "total antioxidant capacity",
    "FRAP",
    "parotid gland",
    "oxidative stress",
    "talk time"
  ],
  "suggested_hubs": [
    {
      "slug": "mobile-phones-rf",
      "weight": 0.9,
      "reason": "Study evaluates health-related biomarkers in relation to mobile phone talking time."
    }
  ]
}
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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: Not supplied
PubMed: 26005658

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