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Comparative Clinical Study of Retention in Complete Denture Bases Using Green Stick Compound and Polycaprolactone
Marwa Mohd Vazeer1, Sreeramulu Basapogu1, Pilli Bhavana1
1Prosthodontics, Government Dental College and Hospital, Hyderabad, IND.
Cureus
|July 6, 2026
Summary
Polycaprolactone (PCL) offers superior retention and patient comfort for complete dentures compared to traditional green stick compound. This promising alternative enhances the peripheral seal for better denture success.
Area of Science:
- Dental Materials Science
- Prosthodontics
- Clinical Dentistry
Background:
- Complete denture retention is crucial for success, with border molding vital for peripheral seal.
- Green stick compound is conventional, but polycaprolactone (PCL) is an emerging alternative.
- Comparing PCL and green stick compound for denture retention, comfort, and handling is needed.
Purpose of the Study:
- To compare the retention of complete denture bases using green stick compound versus PCL for border molding.
- To evaluate patient comfort during the border molding procedure with both materials.
- To assess operator handling characteristics of green stick compound and PCL.
Main Methods:
- A comparative clinical study involving 17 edentulous patients.
- Border molding performed using green stick compound (Group A) and PCL (Group B) on custom trays.
- Retention measured via pull test; patient comfort assessed using Visual Analogue Scale (VAS); operator feedback collected via Likert scale questionnaire.
Main Results:
- PCL group showed significantly higher retention (32.82 N) than green stick compound (28.99 N) (p < 0.001).
- Patient comfort scores were significantly greater with PCL (9.41) compared to green stick compound (8.65) (p < 0.001).
- Operator feedback favored PCL for handling, adaptability, and reheating (p < 0.05).
Conclusions:
- Polycaprolactone (PCL) provides superior denture retention and enhanced patient comfort over green stick compound.
- PCL's improved thermoplastic adaptability likely contributes to a more effective peripheral seal and better retention.
- PCL is a clinically advantageous alternative for border molding in complete denture fabrication.
