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ORIGINAL ARTICLE
Year : 2022  |  Volume : 14  |  Issue : 1  |  Page : 28-37

Eruption chronology of 1st permanent tooth and evaluation of several factors among the children of Kolkata − An original research


Department of Pediatric and Preventive Dentistry, Gurunanak Institute of Dental Sciences and Research, Kolkata, West Bengal, India

Correspondence Address:
Trisha Das Sarma
157/F Nilgunj Road, Panihati, Sodepur, Kolkata - 700 114, West Bengal
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jorr.jorr_34_21

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Objective: Eruption is an orderly, sequential, age-specific event and an important milestone during child's development. Along with the study of prenatal and postnatal growth, diagnosis and treatment planning and maintaining birth records also need idea about proper eruption sequence. The purposes of this study are as follows: To determine which permanent tooth first erupts and at which age, identify if any difference exists with the existing eruption sequence and to note factors if any related to specific eruption chronology among the 5–7 years' old children of North Kolkata. Materials and Methods: Socioeconomic statuses were noted as per the Modified Kuppuswamy Scale. Body mass index (BMI) was calculated with Centers for Disease Control and Prevention child and teen BMI calculator. Tooth notation was recorded using the foreign direct investment system. Children in whom no permanent tooth was erupted, intraoral periapical radiograph was taken with the help of dental mesh gauge in mandibular (mand.) anterior and posterior region. Variables which may influence eruption time were recorded in prevalidated questionnaire. Statistical analysis was performed using IBM SPSS 20.0 software. Results: Mand. central incisor (CI) was the 1st erupted permanent tooth in 31.8% children and Mand. 1st Molar (M1) in 67.9% of total study population. The mean age of eruption of 1st erupted permanent tooth was 5.981 ± 0.547 years. More no of samples (3.80%) from upper socioeconomic status have shown Mand. CI as 1st erupted permanent tooth. Percentage of preterm children (20%) and infants with any systemic diseases (9.50%) were also more in this group. Conclusion: In many children, Mand. CI is the 1st erupted permanent tooth; this is definitely a Milestone Data and did not match with Kronfild and Schour's permanent teeth eruption time table which we are blindly following for years. Parental education and further periodic revaluation are needed for future purpose.


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