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Palate and alveolar ridge development in predental infants: a longitudinal study
F Ishida1, Y Ukai2, T Shimizu3
1Nihon University Graduate School of Dentistry at Matsudo, Matsudo, Chiba, Japan.
Insights
Infant palate and alveolar ridge growth patterns differ in the first 7 months. Major palate development occurs in the first 3 months, influencing later growth.
Area of Science:
- Craniofacial development
- Pediatric morphology
- Infant growth studies
Background:
- Understanding infant craniofacial development is crucial for identifying potential growth abnormalities.
- The predental period offers a unique window to study early palate and alveolar ridge formation.
Purpose of the Study:
- To investigate the developmental trajectory of palate morphology and alveolar ridge dimensions in healthy infants.
- To analyze morphological changes from birth up to 7 months of age.
Main Methods:
- Longitudinal study of 32 healthy infants using 144 dental casts taken from birth to 7 months.
- Measurement of 12 distinct morphological characteristics of the palate and alveolar ridge.
- Application of Principal Component Analysis (PCA) to assess palatal vault changes.
Main Results:
- Alveolar ridge dimensions (width, length) showed consistent age-related increases throughout the 7-month period.
- Palate morphology exhibited significant development in the initial 2-3 months, with slower changes thereafter.
- PCA revealed that palatal vault shape stabilized after 3 months of age.
Conclusions:
- Infant palate and alveolar ridge exhibit distinct growth patterns during the predental period.
- Early postnatal development (first 3 months) is critical for palate morphology.
- Initial palate growth may significantly influence subsequent craniofacial development.
Aim:
To investigate the developmental process of palate morphology, including the alveolar ridge, in healthy infants for the predental period of 7 months from immediately after birth.
Methods:
The subjects were 32 healthy infants. Four or more dental casts were taken of each subject from immediately after birth until 7 months, for a total of 144 dental casts. Twelve characteristics were then measured in order to morphologically study the subjects' palate development. Principal component analysis (PCA) was performed to investigate morphological changes in the palatal vault.
Results:
The 12 characteristics were classified into either the alveolar ridge characteristics group, which determined the size of the alveolar ridge, or the palate characteristics group, which determined palate morphology, with each group showing different growth patterns. The characteristics of width and length increased with age in the alveolar ridge characteristics group; this correlation was maintained throughout the predental period. Meanwhile, in the palate characteristics group, the characteristics showed major developmental changes in the first 2 to 3 months after birth, but the changes were subsequently fewer from 3 to 7 months. The PCA of the palatal vault showed that the first principal component increased until 3 months but subsequently ceased to change.
Conclusions:
In predental infants, growth patterns of palate morphology differed according to their characteristics. There were major developmental changes in the palate during the first 3 months after birth. The study findings suggest that palate growth in the first half of the predental period may affect subsequent palate growth.
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