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Background <p>Ascertaining the maturation status of third molars is crucial for dental age estimation (DAE). This study aimed to evaluate and compare the effectiveness of the DAE criteria proposed by Demirjian et al. (DEM method) with the modification proposed by Solari and Abramovitch (S&amp;A method).</p> Methods <p>In this retrospective, cross-sectional study, the maturation status of 1,351 third molars from 383 subjects was assessed using panoramic radiographs of individuals aged 7–25&#xa0;years. The receiver operator characteristic curve was plotted to compare the effectiveness of the two methods, along with sensitivity and specificity, to analyze the efficacy of the individual stages for estimating ages 16 and 18.</p> Results <p>When considering all four third molars together, the area under the curve (AUC) was significantly greater for the S&amp;A method. When evaluating third molars individually, only tooth 48 showed a significant difference in the AUCs of the two methods (0.005; p = 0.045) for 18&#xa0;years. The specificity for stages F1 (96.99%, 95% CI: 95.09%, 98.31%) and G1 (96.29%, 95% CI: 94.72%, 97.50%) of the S&amp;A method was higher than that for stages F (91.78%, 95% CI: 89.02, 94.04) and G (94.63%, 95% CI: 92.8, 96.10) of the DEM method for ages 16 and 18, respectively. Stages F1 (96.7%) and G1 (85.9%) of the S&amp;A method had a higher probability of an individual being ≥ 16 and ≥ 18&#xa0;years, respectively.</p> Conclusion <p>Both methods were effective in estimating age; however, the S&amp;A method demonstrated greater specificity. Mandibular third molars were more effective than combined third molars and maxillary third molars. Both methods were more accurate in males than in females.</p>

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Evaluation of Demirjian’s and modified Demirjian staging chart by Solari and Abramovitch employing third molars: a comparative cross-sectional study

  • 期刊论文

  • 发表日期：

    2026年3月12日

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  • Shruti Gupta,
  • Ambika Gupta,
  • Komal Kumia,
  • Anita Hooda,
  • Deepti Sharma,
  • Mala Kamboj

摘要

Background

Ascertaining the maturation status of third molars is crucial for dental age estimation (DAE). This study aimed to evaluate and compare the effectiveness of the DAE criteria proposed by Demirjian et al. (DEM method) with the modification proposed by Solari and Abramovitch (S&A method).

Methods

In this retrospective, cross-sectional study, the maturation status of 1,351 third molars from 383 subjects was assessed using panoramic radiographs of individuals aged 7–25 years. The receiver operator characteristic curve was plotted to compare the effectiveness of the two methods, along with sensitivity and specificity, to analyze the efficacy of the individual stages for estimating ages 16 and 18.

Results

When considering all four third molars together, the area under the curve (AUC) was significantly greater for the S&A method. When evaluating third molars individually, only tooth 48 showed a significant difference in the AUCs of the two methods (0.005; p = 0.045) for 18 years. The specificity for stages F1 (96.99%, 95% CI: 95.09%, 98.31%) and G1 (96.29%, 95% CI: 94.72%, 97.50%) of the S&A method was higher than that for stages F (91.78%, 95% CI: 89.02, 94.04) and G (94.63%, 95% CI: 92.8, 96.10) of the DEM method for ages 16 and 18, respectively. Stages F1 (96.7%) and G1 (85.9%) of the S&A method had a higher probability of an individual being ≥ 16 and ≥ 18 years, respectively.

Conclusion

Both methods were effective in estimating age; however, the S&A method demonstrated greater specificity. Mandibular third molars were more effective than combined third molars and maxillary third molars. Both methods were more accurate in males than in females.