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Timing and sequence of emergence of deciduous teeth in Jordanian children
Ola B Al-Batayneh1, Ashraf I Shaweesh2, Earab S Alsoreeky3
1Department of Preventive Dentistry, Faculty of Dentistry, Jordan University of Science and Technology, Irbid, Jordan.
Insights
This study established the timing and sequence of deciduous tooth eruption in Jordanian children, providing crucial data for pediatric dentistry and anthropology. The findings detail the order and age ranges for primary teeth emergence in this specific population.
Area of Science:
- Pediatric Dentistry
- Anthropology
- Forensic Science
Background:
- Deciduous tooth emergence timing and sequence are critical for assessing child development.
- Establishing population-specific data is essential for accurate clinical and forensic applications.
- Previous research has focused on permanent teeth, leaving a gap in deciduous tooth emergence data for specific populations.
Purpose of the Study:
- To determine the timing and sequence of deciduous tooth emergence in Jordanian children.
- To provide the first population-specific standards for primary tooth eruption in Jordan.
- To establish a baseline for future research in pediatric dentistry, orthodontics, and forensic science.
Main Methods:
- A cross-sectional study involving 1988 Jordanian children aged 1 to 45 months.
- Dental examinations were conducted to record the emergence of deciduous teeth.
- Probit regression analysis was used to calculate the median age of emergence per tooth for different age groups and genders.
Main Results:
- The complete deciduous dentition emerged between 8.2 and 27.5 months.
- The typical emergence sequence in both arches was: central incisor, lateral incisor, first molar, canine, and second molar.
- While central incisors showed mandibular precedence, other teeth exhibited maxillary precedence; females generally had earlier emergence, though differences were not statistically significant.
Conclusions:
- This study provides the first standards for deciduous tooth emergence timing and sequence in the Jordanian population.
- These standards will aid in patient management in pediatric dentistry and orthodontics.
- The data will also be valuable for forensic and anthropological research.
Objective:
The aim of this study was to provide the timing and sequence of deciduous tooth emergence in a sample of Jordanian children.
Design:
A total of 1988 (885 female and 1103 male) children aged from 1 to 45 months recruited from nursery schools and child and maternity health centres in the northern, middle and southern regions of Jordan underwent a dental examination for the detection of deciduous tooth emergence. Children were categorized into 15 3-month-apart age groups. Using Probit regression (SPSS version 16), the median age of emergence per tooth was calculated for the total sample and for both genders.
Results:
The period for acquiring deciduous dentition in the total sample ranged from 8.2 to 27.5 months. In either of the maxillary and mandibular arches, deciduous dentition emerged in the following order: central incisor, lateral incisor, first molar, canine and second molar. In addition, there were insignificant differences across side and there was a significant mandibular precedence of the central incisor although the maxillary precedence in the rest of the teeth was insignificant. Moreover, teeth emerged earlier in females although none of the inter-gender differences were significant.
Conclusions:
The first standards of the timing and sequence of deciduous tooth emergence specific to the Jordanian population were provided. These standards will be used along with the previously published standards of permanent tooth emergence to aid managing patients in paediatric dentistry and orthodontics and will find applications in forensic and police sciences and in anthropological research.
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