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Evolution of the Terminal Plane from Deciduous to Mixed Dentition
María Eugenia Cabrera-Domínguez1, Antonia Domínguez-Reyes1, Antonio F Galan-Gonzalez1
1Departamento de Estomatología, Universidad de Sevilla, 41009 Sevilla, Spain.
The study tracked dental arch development in children, finding that early terminal plane and canine occlusion patterns shift significantly from deciduous to mixed dentition, highlighting critical growth periods for preventing malocclusion.
Area of Science:
- Pediatric Dentistry
- Orthodontics
- Dental Development
Background:
- Proper development of deciduous dentition is essential for achieving physiological occlusion in permanent teeth.
- Understanding dental arch and occlusion progression is key to identifying and managing potential malocclusions early.
Purpose of the Study:
- To evaluate the longitudinal changes in terminal plane and canine occlusion from deciduous to mixed dentition in children.
- To identify developmental trends in occlusion that may influence future orthodontic needs.
Main Methods:
- Longitudinal study of 257 children (ages 3-5 and 8-10).
- Assessment of terminal plane and canine occlusion at two distinct developmental stages.
- Statistical analysis using chi-square, ANOVA, Mann-Whitney U, Kruskal-Wallis, and Wilcoxon tests (p < 0.05).
Main Results:
- The most frequent terminal plane shifted from bilateral flush (deciduous) to mesial (mixed dentition).
- Canine occlusion predominantly showed Class I in both dentitions, with a decrease in Class II in permanent teeth.
- Molar occlusion in mixed dentition was mainly Class I, followed by variations of Class II and Class III.
Conclusions:
- Recognizing peak dental growth periods can aid in preventing malocclusions and reducing the need for extensive orthodontic treatment.
- Early monitoring of occlusion development offers potential for improved treatment outcomes and long-term stability.
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