DENTAL CARIES SITUATION AND DISTRIBUTION OF STREPTOCOCCUS MUTANS AND STREPTOCOCCUS SOBRINUS IN DENTAL PLAQUE OF STUDENTS IN VO TRUONG TOAN PRIMARY SCHOOL AT CAN THO CITY FROM 2022 TO 2024
Main Article Content
Abstract
Background: Dental caries cause tooth loss, poor chewing ability, loss of aesthetics, and is also the cause of some internal diseases. The rate of dental caries in primary school students is very high, over 85%. The main reason is Streptococcus bacteria in plaque, of which Streptococcus mutans and Streptococcus sobrinus are the main bacteria. Objectives: To describe the current status of dental caries in students from 6 to 10 years old; determine the presence rate of Streptococcus mutans and Streptococcus sobrinus bacteria in dental plaque. Materials and methods: A cross-sectional descriptive study was conducted on 77 students with dental caries to perform Polymerase Chain Reaction to determine the prevalence of Streptococcus mutans and Streptococcus sobrinus infection. Results: 100% of the study subjects had dental caries, both baby and permanent teeth. Of which, the number of students with 5-10 baby teeth decayed accounted for the highest rate with 61%, and the rate of students with more than 10 damaged baby teeth accounted for 11.7%. The number of students with 4 or more permanent teeth decayed was 75.3%. Regarding the presence rate of Streptococcus mutans alone, Streptococcus sobrinus, both bacteria species in plaque were 88.3%; 2.6%; 3.9% respectively. Conclusion: The number of students with multiple cavities was very high, both in primary and permanent teeth. Streptococcus mutans and Streptococcus sobrinus bacteria are closely related to the rate of dental caries, requiring interventions to change the biofilm that affects the bacteria to reduce the rate of tooth decay.
Article Details
Keywords
Dental caries, deciduous tooth, permanent tooth, primary school student, dental plaque, Streptococcus mutans, Streptococcus sobrinus
References
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