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Spacing and crowding among African and Caucasian children
E A Mugonzibwa1, R Eskeli, M T Laine-Alava
1Department of Preventive and Community Dentistry, Muhimbili University College of Health Sciences (MUCHS), Dar Es Salaam, Tanzania.
Insights
Dental crowding and spacing vary significantly between African and Caucasian children, influenced by ethnicity and tooth development stage. These factors are crucial for effective orthodontic treatment planning.
Area of Science:
- Orthodontics
- Pediatric Dentistry
- Anthropology
Background:
- Dental crowding and spacing are key indicators of oral health and orthodontic needs.
- Understanding ethnic and developmental variations is essential for accurate diagnosis.
Purpose of the Study:
- To compare dental spacing and crowding between Tanzanian African and Caucasian children.
- To analyze these variations based on gender and dental emergence stage.
Main Methods:
- Cross-sectional epidemiological clinical study.
- Involved 869 African and 706 Caucasian children aged 3.5-16 years.
- Compared spacing and crowding across ethnic groups, genders, and developmental stages.
Main Results:
- Spacing was more prevalent in the maxilla, crowding in the mandible.
- Caucasians showed more spacing during early permanent maxillary incisor transition.
- Crowding was more frequent in Caucasians, increasing with developmental stage, unlike Africans.
Conclusions:
- Ethnic background and dentition emergence stage are critical considerations for orthodontic treatment planning.
- Resource allocation for orthodontic care should account for population-specific variations.
- Individualized treatment strategies must incorporate ethnic and developmental factors.
Objective:
To determine spacing and crowding according to ethnic group, gender and dental emergence stage among Tanzanian African and Caucasian children.
Design:
Cross-sectional epidemiological clinical study.
Setting:
A total of 869 African (428 boys, 441 girls) and 706 Caucasian (319 boys, 387 girls) school children, aged 3(1/2)-16 years.
Main Outcome Measures:
Comparison of spacing and crowding between African and Caucasian children according to gender and dental emergence stage.
Results:
Spacing was more often found in the maxilla, while crowding was more common in the mandible. Only during the transition of the maxillary permanent front teeth was there significantly more spacing in Caucasians. No gender differences were found. In both samples spacing decreased during later emergence stages. Crowding was more often found in Caucasian children than in African children. In Caucasian children the frequency of crowding increased with advanced emergence stages, while for Africans the trend was not consistent.
Conclusion:
When planning resources for orthodontic treatment for different populations as well as planning treatment for individuals, ethnic background and emergence stage of the dentition need to be considered.
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