Abstract: Objective: To explore the clinical effect of aesthetic clasp removable partial denture based on digital precision impression technology with a spliced tray in the restoration of dentition defects. Diagnosis and Treatment: One patient with dentition defect was selected. Intraoral scanning was performed to obtain three-dimensional oral data, followed by digital design of a split-type custom impression tray, which was divided into two modules: one for the remaining dentition area and one for the edentulous mucosal area. The tray was precisely spliced via a buckle structure to complete sectional impression taking and jaw relation recording. The final denture was fabricated, delivered, and followed up for evaluation.Results: The denture was seated smoothly with good retention. Occlusal relationship and masticatory function were improved, and the aesthetic clasp showed good concealment with high patient satisfaction. At the 6-month follow-up, the denture remained stable in retention, with no inflammatory reaction in the mucosa.Conclusions: This treatment protocol can balance the functional stability and aesthetic effect of the denture, reduce the number of patient visits, and have high clinical application value.

Key words: aesthetic clasp, removable partial denture, dental defect, splicing tray, digital design