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Quantitative Assessment Protocol for Facial Soft Tissue Volumetric Changes with Stereophotogrammetry

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Soft tissue facial changes using Biobloc appliances: geometric morphometrics.

Dave Singh¹, Lilliana E Medina, William M Hang

¹SMILE Foundation, USA.

International Journal of Orthodontics (Milwaukee, Wis.)

|September 11, 2009

Summary

The Biobloc appliance guides soft tissue facial growth consistently, promoting a balanced profile. Untreated facial growth is less predictable and more vertical.

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Area of Science:

Orthodontics
Craniofacial Biology
Biomedical Engineering

Background:

Facial growth patterns are influenced by various factors.
Orthodontic appliances can modify craniofacial development.
Understanding soft tissue changes is crucial for predicting treatment outcomes.

Purpose of the Study:

To investigate the effect of the Biobloc appliance on soft tissue facial growth.
To compare treated and untreated facial growth patterns.
To assess the consistency and direction of soft tissue changes.

Main Methods:

Analysis of standardized lateral cephalometric radiographs from 41 subjects.
Digitization of 14 facial landmarks.
Application of finite-element analysis to quantify soft tissue changes.

Main Results:

Biobloc treatment demonstrated a consistent soft tissue facial growth direction of approximately 45 degrees.
Untreated subjects exhibited less consistent and more vertical facial growth.
Facial changes associated with Biobloc treatment indicate a more balanced profile.

Conclusions:

The Biobloc appliance effectively guides soft tissue facial growth.
Treatment with Biobloc results in predictable and balanced facial development.
Finite-element analysis provides valuable insights into orthodontic treatment effects.