Stabilized record bases for complete dentures

Area of Science:

• Dentistry
• Prosthodontics
• Dental Materials Science

Background:

• Accurate maxillomandibular jaw relation records are crucial for successful denture fabrication.
• Traditional record bases can be unstable and may damage casts, especially in undercut areas.
• Improving the retention and stability of record bases is essential for clinical procedures.

Purpose of the Study:

• To describe a technique for constructing stabilized record bases that utilize undercuts effectively.
• To evaluate the use of resilient denture liner material for protecting cast details and enhancing retention.
• To assess the benefits of incorporating a posterior palatal seal into the record base design.

Main Methods:

• A step-by-step technique for constructing stabilized record bases was developed.
• Resilient denture liner material was applied to undercut regions of the record base.
• Shellac denture base material was incorporated at the posterior limit to facilitate posterior palatal seal assessment.
• Record bases were fabricated using both sprinkle-on and dough methods for comparison.

Main Results:

• The described technique successfully created stabilized record bases that leveraged undercuts.
• Resilient liners protected rugae and prevented cast damage during repeated handling.
• The integrated posterior palatal seal provided adequate retention for jaw relation records and try-ins.
• Record bases made via the sprinkle-on technique demonstrated superior rigidity, stability, accuracy, and resistance to warping compared to the dough method.

Conclusions:

• The described technique offers an effective method for constructing stable and retentive record bases.
• Utilizing resilient denture liners in conjunction with specific materials enhances record base performance and cast protection.
• The sprinkle-on technique is preferred for fabricating superior quality record bases for prosthodontic procedures.