Microbiome variations in preschool children with halitosis

Area of Science:

• Microbiology
• Oral Health
• Pediatric Dentistry

Background:

• Intra-oral halitosis is a common concern in children.
• Understanding the microbial basis of halitosis in preschool-aged children is crucial for targeted interventions.

Purpose of the Study:

• To investigate the bacterial characteristics associated with intra-oral halitosis in Chinese preschool children.
• To identify specific microbial communities and species linked to halitosis in this demographic.

Main Methods:

• An epidemiological study involving 273 preschool children (aged 3-4 years) in Shanghai.
• 16S rRNA gene sequencing was used to characterize microbial communities from tongue coating samples of healthy and halitosis participants.

Main Results:

• Halitosis was present in 13.2% of the children studied.
• No significant difference in overall microbial diversity was found between groups.
• Specific bacterial species, including Leptotrichia sp. HMT_417, Prevotella Pallens, and Alloprevotella rava, were more abundant in the halitosis group.

Conclusions:

• Halitosis in preschool children is associated with multi-microbial interactions.
• Oral microorganisms can have potentiating or inhibiting effects on each other, contributing to halitosis.