Premature loss of primary first molars in children from urban and rural Peruvian educational centers

Authors

Keywords:

molar tooth, prevalence, primary tooth

Abstract

Introduction: Early loss of the first primary molar could cause deficiency in masticatory function and dental migration.

Objective: To determine the prevalence of premature loss of first primary molars in children aged 6 to 9 years in urban and rural schools.

Methods: A descriptive cross-sectional study was carried out. The sample consisted of 204 students, 102 from urban and 102 from rural schools. A data collection form was used that contained: odontogram, age of the children, gender, presence or absence of the first primary molar, affected tooth, dental arch and side of distribution. The data were analyzed using the chi-square distribution with a significance level of 5%.

Results: The prevalence of premature loss of the first primary molar was significantly higher in rural areas (21.1%) and in males, compared to urban areas. As for the frequency of this loss, it was higher in the rural area, especially in 9-year-old schoolchildren (31.7%), mainly affecting the right first primary molar (24.4%). The loss was more common in the lower arch (33.8%) and on both sides of the mouth (39.7%).

Conclusion: Premature loss of first primary molars was more prevalent among schoolchildren in rural areas than in urban areas.

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Author Biographies

Jaime Eduardo Juarez-Ríos, Universidad Cesar Vallejo

Cirujano dentista

César Gerardo Sandoval Agurto, Universidad Cesar Vallejo

Cirujano dentista

Catherin Angélica Ruiz Cisneros, Universidad Cesar Vallejo

Cirujano dentista

Paul Martín Herrera Plasencia, Universidad Cesar Vallejo

Cirujano dentista

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Published

2025-07-08

How to Cite

1.
Juarez-Ríos JE, Sandoval Agurto CG, Ruiz Cisneros CA, Herrera Plasencia PM. Premature loss of primary first molars in children from urban and rural Peruvian educational centers. Rev Cubana Med Milit [Internet]. 2025 Jul. 8 [cited 2025 Jul. 17];54(3):e025066717. Available from: https://revmedmilitar.sld.cu/index.php/mil/article/view/66717