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. 2017:2017:6074703.
doi: 10.1155/2017/6074703. Epub 2017 Jul 12.

Incidence of Tooth Loss in Adults: A 4-Year Population-Based Prospective Cohort Study

Manoelito Ferreira Silva-Junior  1 , Marília Jesus Batista  2 , Maria da Luz Rosário de Sousa  1
Affiliations

Incidence of Tooth Loss in Adults: A 4-Year Population-Based Prospective Cohort Study

Manoelito Ferreira Silva-Junior et al. Int J Dent. 2017.

Abstract

Objective: To verify the incidence of tooth loss in extended age group of adults in 4 years.

Materials and methods: The prospective cohort study assessed adults (20-64 years old) between 2011 and 2015, from Piracicaba, São Paulo, Brazil. The dependent variable was cumulative incidence of tooth loss, assessed by difference between missing teeth (M) of decayed, missing, and filled tooth index (DMFT) in 2011 and 2015. Participants were stratified into young (20-44 years old) and older (45-64 years old) adults. Mann-Whitney U test (p < 0.05) was used to compare the means of incidence of tooth loss between age groups.

Results: After four years, 57.7% (n = 143) of adults were followed up and the mean incidence of tooth loss was 0.91 (SD = 1.65); among these, 51 adults (35.7%) who lost their teeth showed mean tooth loss of 2.55 (SD = 1.86). In older adults, incidence of tooth loss was higher (p = 0.008), but no difference between age groups was found when only adults with incidence of tooth loss were assessed (p = 0.844).

Conclusion: There was higher incidence of tooth loss in older adults after four years, however, without difference between age groups when only those who lost teeth were evaluated.

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Figures

Figure 1
Figure 1
Frequency of total incidence and by age group of the number of teeth lost by adults in the 4-year follow-up. Piracicaba, São Paulo, Brazil, 2011–2015.
Figure 2
Figure 2
Percentage of tooth loss according to affected teeth in adults at the baseline and follow-up. Piracicaba, São Paulo, Brazil, 2011–2015.
See this image and copyright information in PMC

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