Long-Term Effect of Diet Consistency on Mandibular Growth within Three Generations: A Longitudinal Cephalometric
Ioannis A Tsolakis1,2, Christos Verikokos3, William Papaioannou4
1Department of Orthodontics, School of Dentistry, Aristotle University of Thessaloniki, 54154 Thessaloniki, Greece.
Biology
|April 28, 2023
Summary
A soft diet significantly reduced mandibular growth in Wistar rats across three generations. This suggests diet consistency impacts skeletal development and may have transgenerational effects on jaw growth.
Area of Science:
- Developmental biology
- Craniofacial development
- Animal models
Background:
- Dietary consistency is a factor in craniofacial development.
- Investigating the long-term effects of diet on mandibular growth is crucial.
- Understanding generational impacts of diet requires multi-generational studies.
Purpose of the Study:
- To investigate the impact of diet consistency on mandibular growth in Wistar rats.
- To examine these effects across three generations.
- To identify specific craniofacial changes associated with diet consistency.
Main Methods:
- Wistar rats (60 female, 8 male) were bred for three generations.
- Lateral cephalometric X-rays were analyzed from female rats at 100 days old.
- Linear and geometric morphometric analyses were performed on craniofacial landmarks.
Main Results:
- Soft diet groups exhibited significantly smaller mandibular measurements compared to hard diet groups.
- Linear measurements showed significant differences between first and third-generation soft diet groups.
- Geometric morphometrics revealed differences in the condylar process and mandibular angle.
Conclusions:
- A soft diet is associated with reduced mandibular growth.
- These dietary effects on mandibular development may be transmitted across generations.
- Dietary consistency plays a role in the heritability of craniofacial traits.
