Palatal soft tissue thickness at different ages using an ultrasonic device.

Area of Science:

• Orthodontics
• Dental Implantology
• Anatomy

Background:

• Temporary anchorage devices (TADs) are crucial for orthodontic treatment.
• Understanding palatal soft tissue thickness is essential for optimal TAD placement.
• Variations in tissue thickness across different dentition stages are not fully elucidated.

Purpose of the Study:

• To measure and compare palatal soft tissue thickness in late mixed, early permanent, and permanent dentition.
• To identify optimal anatomical sites for TAD placement based on tissue thickness.

Main Methods:

• Three groups were studied: late mixed (n=42), early permanent (n=41), and permanent dentition (n=38).
• Intraoral ultrasonic measurements were taken across a 27-point grid.
• Repeated measures analysis of variance was used for statistical analysis.

Main Results:

• Significant differences in palatal soft tissue thickness were observed among dentition groups (P < 0.001), with permanent dentition showing the greatest thickness.
• Tissue thickness increased significantly from median to lateral and anterior to posterior sites within each group.
• Arch form and gender influenced thickness (P < 0.05), but irregularity index and Angle classification did not.

Conclusions:

• Palatal soft tissue thickness progressively increases from mixed to permanent dentition.
• These findings provide valuable data for clinicians to improve the success rate of palatal TADs.