Occlusion accuracy of restorations and removable partial dentures fabricated using the impression under occlusal...

Area of Science:

• Dentistry
• Prosthodontics
• Dental Materials

Background:

• Accurate occlusal registration is crucial for successful dental restorations and removable partial dentures (RPDs).
• Conventional impression techniques may lead to inaccuracies in occlusal contacts and high occlusion.
• Evaluating novel impression methods is essential for improving prosthodontic outcomes.

Purpose of the Study:

• To compare the occlusal accuracy of a novel impression technique against conventional methods.
• To evaluate high occlusion and occlusal contact areas during lateral movements for metal restorations and RPDs.
• To determine the clinical applicability of the novel impression technique for fabricating accurate prostheses.

Main Methods:

• A novel functionally generated path (FGP) recording and impression technique under occlusal force was developed.
• Metal restorations and RPDs were fabricated using both novel and conventional techniques on a simulation model.
• Occlusion in intercuspal position and lateral contact areas were measured and statistically analyzed.

Main Results:

• The novel technique resulted in significantly lower high occlusion in the intercuspal position for both restorations and RPDs compared to conventional methods.
• The new technique demonstrated superior guidance contact during lateral movements.
• Conventional techniques exhibited significantly higher occlusion in the intercuspal position.

Conclusions:

• The novel impression technique offers improved accuracy in occlusal contact and reduced high occlusion.
• This technique is recommended for fabricating highly accurate dental prostheses, minimizing the need for adjustments.
• The FGP recording and impression under occlusal force method enhances prosthodontic precision.