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Related Experiment Video

Updated: Jun 27, 2026

Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition

Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition

Published on: February 23, 2024

Occlusal development between primary and mixed dentitions: a 5-year longitudinal study.

Luiz Paulo Miranda da Silva¹, Rogerio Gleiser

¹Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.

Journal of Dentistry for Children (Chicago, Ill.)

|December 2, 2008

Summary

Primary dentition patterns influence mixed dentition occlusal relationships. Baume arch type I and primate spaces promote Class I malocclusion and reduce upper arch crowding, but not lower arch crowding or molar relationships.

Related Experiment Videos

Last Updated: Jun 27, 2026

Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition

Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition

Published on: February 23, 2024

Area of Science:

Pediatric Dentistry
Orthodontics
Dental Development

Background:

Understanding occlusal development is crucial for early orthodontic intervention.
Primate spaces and dental arch types are key factors in primary and mixed dentition.
Longitudinal studies are needed to track occlusal changes over time.

Purpose of the Study:

To analyze occlusal variations in primary and mixed dentition.
To investigate the impact of dental arch type and primate spaces on occlusal development.
To assess changes in molar-canine relationships and anterior crowding over five years.

Main Methods:

A longitudinal study involving 128 children in Brazil.
Examination of occlusal relationships, including canine and molar relationships, over a 5-year period.
Classification based on dental arch type (Baume) and presence of primate spaces.

Main Results:

A straight terminal plane in primary dentition often led to Class I or III, progressing to Class I in mixed dentition.
Class I canine relationships in primary dentition persisted in 91% of cases with Baume arch type I and primate spaces.
Overbite and overjet showed modifications from primary to mixed dentition; lower arch crowding occurred in 29% despite favorable arch type and spaces.

Conclusions:

Occlusal development in mixed dentition is largely predictable from primary dentition patterns.
Baume arch type I and primate spaces are associated with Class I malocclusion and reduced upper arch crowding.
These factors do not significantly influence molar relationships or the incidence of lower arch crowding.