Caries prevalence of the first permanent molars in 6–8 years old children

Abstract

Dental caries is one of the most common infectious diseases affecting 6–8-year-old children, especially their first permanent molars (FPMs). This study explored the prevalence of dental caries on FPMs by analyzing the oral health status of 1,423,720 children aged 6–8 years in Zhejiang Province, China. The data were extracted from the dental electronic records of the schoolchildren attending the Oral Health Promotion Project (OHPP), conducted during 2013–2017 in Zhejiang Province. Multiple logistic regression models were used to determine the factors affecting dental caries. Boys and girls accounted for 53.2% and 46.8% of the subjects, respectively. From 2013 to 2017, the prevalence of dental caries on FPMs increased: 2013: 20.4%; 2014: 25.3%; 2015: 24.5%; 2016: 27.0%; and 2017: 29.0%, despite the OHPP conducted. Based on multiple logistic regression model, girls had a significantly higher risk of FPM caries compared to boys (OR = 1.38, 95% CI: 1.37–1.39, p < 0.0001); compared with the caries rates in urban areas, the caries risk was significantly higher in rural areas (OR = 1.15, 95% CI: 1.14–1.16, p < 0.0001). In terms of geographic location in Zhejiang Province, the odds ratios of the caries risk of the east, south, west, and north were 1.35 (1.33–1.36), 1.3 (1.28–1.31), 0.81 (0.8–0.83), and 0.82 (0.81–0.84), respectively (p < 0.0001), by considering the central region as a reference. The caries prevalence of FPMs was high, with an increasing tendency and gender, social, cultural, and environmental factors affecting the caries prevalence.

The effect of unhealthy dietary habits on the incidence of dental caries and overweight/obesity among Egyptian school children (A cross-sectional study)

“…Moreover, there was an inverse significant association between meat/poultry/fish and dmft (p<0.05) in this study. These results are concomitant with a study carried out in Zhejiang Province, exploring the prevalence of dental caries in 6-to 8-year-old children, especially their first permanent molars (95).…”

“…It has been authorized that a lower risk for first permanent molars caries was found in children consuming diet rich in red meat, poultry, organs, eggs, and seafood ( 95 ). Moreover, there was an inverse significant association between meat/poultry/fish and dmft (p <0.05) in this study.…”

Research progress of mandibular first molar preparation with nickel-titanium instruments under the guidance of CBCT

“…The mandibular first molar has a complex pit and fissure structure on the occlusal surface, which not only makes it play an important role in the chewing process, but also causes a very high caries rate. A survey has shown [1][2][3] that the caries rate among Chinese adolescents is generally on the rise, among which the first permanent molars are the most serious, accounting for about 1/4. And the lower jaw is significantly higher than the upper jaw, and women are higher than men.…”

Effectiveness of Three Agents in Pulpotomy Treatment of Permanent Molars with Incomplete Root Development: A Randomized Controlled Trial

“…Although dental caries can be prevented by improving diet, limiting the ingestion of free sugars, by improving the exposure to fluoride as well as the measures of tooth brushing and facilitating access to dental care for all social classes, it is estimated that of all oral diseases, carious disease is the most common, affecting around 2.3 billion people worldwide [ 1 , 2 , 3 , 4 ]. Incidence of carious disease is reported to be much more frequent in pediatric patients and, as shown in different studies, to frequently affect the permanent molars, which are more susceptible to early caries soon after eruption [ 4 , 5 , 6 ]. First molars would play a key role in the healthy development of dental arches and occlusion [ 7 ].…”