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Aim <p>To evaluate crestal soft tissue thickness at edentulous mandibular first molar sites in an Indian population using cone-beam computed tomography (CBCT) and to assess potential associations with age and gender.</p> Materials and Methods <p>This retrospective radiological study analyzed CBCT scans of 100 patients (48 females, 52 males), comprising 104 edentulous mandibular first molar sites with adjacent teeth present. Scans were obtained using standardized protocols and analyzed using CS 3D Imaging software. Crestal soft tissue thickness was measured at the midpoint between adjacent teeth in cross-sectional views. Statistical analysis was performed using MedCalc software.</p> Results <p>Crestal soft tissue thickness ranged from 1.0 to 3.8&#xa0;mm, with a mean of 1.93 ± 0.27&#xa0;mm. Males demonstrated slightly greater thickness than females; however, the difference was not statistically significant (<i>p</i> = 0.096). No significant difference was observed between patients above and below 50 years of age (<i>p</i> = 0.72).</p> Conclusion <p>The average crestal soft tissue thickness in the Indian population at the mandibular first molar edentulous site is below the commonly cited threshold of approximately 2&#xa0;mm reported to be favorable for peri-implant tissue stability. This suggests a potential need for soft tissue augmentation in most clinical scenarios, particularly when sub-crestal implant placement is not feasible.</p>

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Crestal Soft Tissue Thickness in the Mandibular First Molar Region: A Cross-sectional Retrospective Analysis of Radiographic Data

  • 期刊论文

  • 发表日期：

    2026年3月14日

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  • Yazad Gandhi,
  • Mayuri Patel,
  • Ninad Padhye

摘要

Aim

To evaluate crestal soft tissue thickness at edentulous mandibular first molar sites in an Indian population using cone-beam computed tomography (CBCT) and to assess potential associations with age and gender.

Materials and Methods

This retrospective radiological study analyzed CBCT scans of 100 patients (48 females, 52 males), comprising 104 edentulous mandibular first molar sites with adjacent teeth present. Scans were obtained using standardized protocols and analyzed using CS 3D Imaging software. Crestal soft tissue thickness was measured at the midpoint between adjacent teeth in cross-sectional views. Statistical analysis was performed using MedCalc software.

Results

Crestal soft tissue thickness ranged from 1.0 to 3.8 mm, with a mean of 1.93 ± 0.27 mm. Males demonstrated slightly greater thickness than females; however, the difference was not statistically significant (p = 0.096). No significant difference was observed between patients above and below 50 years of age (p = 0.72).

Conclusion

The average crestal soft tissue thickness in the Indian population at the mandibular first molar edentulous site is below the commonly cited threshold of approximately 2 mm reported to be favorable for peri-implant tissue stability. This suggests a potential need for soft tissue augmentation in most clinical scenarios, particularly when sub-crestal implant placement is not feasible.