Tooth Wear and Crowding in Amazon Indigenous Populations
Author Information
Author(s): Travassos da Rosa Moreira Bastos, da Costa Eduardo Oliveira, Normando David
Primary Institution: Federal University of Para, Belém, Brazil
Hypothesis
The study investigates the relationship between tooth wear and tertiary crowding in Amazon Indigenous populations over a 13-year period.
Conclusion
After 13 years, dental crowding and tooth wear increased, while the arch dimensions tended to decrease, suggesting that tooth wear has a small impact on tertiary crowding.
Supporting Evidence
- Tooth wear increased between 0.65 and 0.99 units over 13 years.
- A slight increase in anterior dental crowding was observed, with a decrease in arch perimeter.
- Tooth loss was inversely associated with dental crowding in the upper arch.
Takeaway
This study looked at how wearing down teeth affects crowding in the mouths of Indigenous people in the Amazon over 13 years.
Methodology
A cohort study with clinical, photographic, and dental cast evaluations of 40 Indigenous people at baseline and after 13 years.
Potential Biases
Potential bias due to the convenience sampling method and loss of participants over time.
Limitations
High incidence of tooth loss in the sample and difficulty in locating participants for follow-up reduced the sample size.
Participant Demographics
The sample included 16 males and 24 females from two villages, with mean ages of 16.0 and 29.6 years at baseline and follow-up, respectively.
Statistical Information
P-Value
p<0.05
Confidence Interval
95% CI 0.74–0.99
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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