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[Guided and unguided hinge axis in the totally edentulous]
T Tamaki1, S T Tamaki, M C Yamada
1Faculdade de Odontologia-USP.
Revista De Odontologia Da UNESP
|January 1, 1990
Summary
This study located the terminal hinge axis (THA) in edentulous patients using guided and non-guided methods. Both techniques precisely identified the THA in the anteroinferior quadrant near the vertical dimension of occlusion.
Area of Science:
- Dentistry
- Biomechanics
- Anatomy
Context:
- Accurate determination of the terminal hinge axis (THA) is crucial for prosthetic rehabilitation in completely edentulous patients.
- Existing methods for THA location can be challenging, especially in edentulous individuals.
- Chin compression is a technique explored to aid in THA identification.
Purpose:
- To compare two methods (guided and non-guided with chin compression) for locating the terminal hinge axis (THA) in completely edentulous individuals.
- To evaluate the reliability and precision of THA determination using these techniques.
Summary:
- The investigation analyzed two distinct approaches for identifying the terminal hinge axis (THA) in completely edentulous subjects.
- Key findings indicate that the emergence points of the THA were consistently located in the anteroinferior quadrant.
- THA identification occurred adjacent to the vertical dimension of occlusion, and each method successfully pinpointed a unique THA without significant difficulty.
Impact:
- Provides insights into reproducible methods for locating the THA in edentulous patients.
- May inform clinical practices for improved accuracy in complete denture fabrication and occlusal rehabilitation.
- Contributes to understanding the anatomical landmarks relevant to mandibular kinematics in the absence of teeth.