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Comparison of 3D-Printed and Heat-Cured Upper Complete Denture Bases
Sponsor: Arab International University
Summary
This study compared two methods of making bases for upper complete dentures: three-dimensional (3D) printing and conventional heat curing. A denture base rests on the gums and supports the artificial teeth. The aim was to determine whether the manufacturing method affected retention, stability and support: how well the base resisted being dislodged, resisted horizontal or rocking movements, and resisted movement towards the supporting tissues under pressure. Sixteen participants with no remaining upper teeth took part. Two denture bases were made for each participant from the same dental impression, one using each manufacturing method. The order in which the bases were tested was randomly determined by computer. The bases were labelled with codes so that two independent examiners were not informed of the manufacturing method. Each examiner assessed anterior and posterior retention, front-to-back and lateral stability, and front-to-back and lateral support using predefined rating scales. Scores were compared within each participant, and agreement between the examiners was also evaluated.
Official title: Retention, Stability and Support of 3D-Printed Versus Heat-Polymerised Maxillary Complete Denture Bases: A Within-Participant Clinical Study
Key Details
Gender
All
Age Range
45 Years - 60 Years
Study Type
INTERVENTIONAL
Enrollment
16
Start Date
2024-03-16
Completion Date
2026-01-15
Last Updated
2026-11-02
Healthy Volunteers
No
Conditions
Interventions
Heat-Polymerised Maxillary Complete Denture Base
A maxillary acrylic denture base fabricated directly on the master cast using conventional flasking and resin packing. The base had a nominal thickness of 3 mm and incorporated three testing handles. Processing involved a water bath at 73°C for two hours.
3D-Printed Maxillary Complete Denture Base
A maxillary denture base digitally designed from a laboratory scan of the master cast and fabricated from photopolymer resin using LCD-based stereolithography. The base had a nominal thickness of 3 mm and incorporated three testing handles. Printing was followed by alcohol washing and additional light polymerisation.
Locations (1)
School of Dental Medicine
Damascus, Syria