Retention of cobalt–chromium powder bed fusion (selective laser melting) removable partial dentures: An in vitro comparative analysis

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This study aims to compare the retention of cobalt-chromium removable partial dentures fabricated by conventional casting and selective laser melting.
Twelve cobalt-chromium removable partial denture frameworks were fabricated and divided into two groups: Group 1 (3D-printed resin patterns) and Group 2 (SLM fabrication).
Retention forces were measured using a universal testing machine before and after simulated chewing cycles.
SLM-fabricated frameworks exhibited higher retention forces than 3D-cast frameworks.
The difference in retention between SLM and 3D-cast groups was not statistically significant after chewing simulation.
Both framework types showed satisfactory retentive performance.

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In vitro analysis compares retention of cobalt-chromium removable partial dentures from two manufacturing methods, indicating potential alternatives.

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Zaky et al. (2026) studied this question.

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