Modified additive manufacturing and injection molding for diastema closure with an integrated occlusal prop

Q: What does this research mean for the field?

Integrating custom occlusal props into a 3D-printed injection guide for the Additive Manufacturing and Injection Molding (AMIM) technique improves mandibular stability, patient comfort, and clinical handling during anterior composite restorations. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

Leonardo M. Nassani; Gretchen L. Smith; Emma Workman; D. S. Clark; Daria Buhtoiarova; Shereen Azer; Rafat S. Amer

doi:10.1016/j.prosdent.2026.07.022

September 1, 2026Journal of Prosthetic DentistryOpen Access

Modified additive manufacturing and injection molding for diastema closure with an integrated occlusal prop

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Key Points

To modify the additive manufacturing and injection molding technique by incorporating custom occlusal props directly into a 3D-printed injection guide for anterior diastema closure.
Digitally integrated custom occlusal bite props into a translucent 3D-printed injection guide design.
Demonstrated the clinical workflow in a single patient receiving multiple direct anterior composite resin veneers for diastema closure.
The integrated occlusal prop stabilized the mandible and increased patient comfort during prolonged restorative placement.
The modified translucent guide improved clinical handling without obstructing restorative instruments or interfering with composite injection.

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Abstract

The Additive Manufacturing and Injection Molding (AMIM) technique was modified by digitally integrating custom occlusal props into a translucent 3-dimensionally (3D) printed injection guide. The design improved mandibular stability, patient comfort, and clinical handling during the placement of multiple anterior composite resin restorations without interfering with the restorative procedure. The technique was demonstrated in a patient treated with direct composite veneers.

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Nassani et al. (2026) studied this question.

synapsesocial.com/papers/6a993576636c6408cfa7da14 https://doi.org/10.1016/j.prosdent.2026.07.022

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Modified additive manufacturing and injection molding for diastema closure with an integrated occlusal prop

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Modified additive manufacturing and injection molding for diastema closure with an integrated occlusal prop

Key Points

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