[Therapeutic immediate denture, class II]

Area of Science:

• Dentistry
• Orthodontics
• Temporomandibular Joint Disorders

Background:

• Posterior support absence and temporomandibular joint (TMJ) dysfunction lead to unstable jaw joints with condyles in a retruded, downward position.
• This compromised joint position prevents a stable occlusal relationship, rendering the most retruded clinical position unsuitable for prosthetic restorations.

Purpose of the Study:

• To determine an optimal therapeutic centric occlusion anteriorly without increasing vertical dimension.
• To establish accurate methods for determining occlusal plane position and orientation.
• To understand how a corrected occlusal scheme influences muscle coordination and mandibular positioning.

Main Methods:

• Utilizing original temporomandibular joint (TMJ) tomographs to ascertain the degree of anterior condylar repositioning.
• Employing cephalometric analysis for precise determination of the occlusal plane's position and orientation.
• Establishing a therapeutic centric occlusion anteriorly to improve jaw stability.

Main Results:

• The study advocates for establishing a therapeutic centric occlusion anteriorly, avoiding the use of the most retruded clinical position.
• TMJ tomographs guide the extent of anterior condylar repositioning.
• Cephalometric analysis is essential for accurately defining a normal occlusal plane.

Conclusions:

• A stable occlusion is achievable by repositioning the condyles anteriorly, without increasing vertical dimension.
• Accurate occlusal plane determination via cephalometric analysis is key.
• This approach promotes proper muscle coordination and maintains an anterior mandibular position, crucial for TMJ health.