The Morelli Plastic Trays Upper & Lower #4 are sterilizable plastic impression trays supplied as a matched pair, one upper tray and one lower tray, both in size 4. The upper tray measures 70 mm (2.76 in) across the arch and 53 mm (2.09 in) front to back, with 28 mm (1.10 in) of lateral wall height; the lower tray measures 67 mm (2.64 in) across and 50 mm (1.97 in) front to back, with 23 mm (0.91 in) of lateral wall height. These dimensions define the dental arch this pair is selected for. Retention grooves molded into the base of each tray hold alginate in position, and the lateral wall height allows a complete impression of the dental arch.
Key Features
Base retention grooves hold the impression material against the tray base while the impression is taken.
Lateral wall height of 28 mm (1.10 in) on the upper tray and 23 mm (0.91 in) on the lower tray allows a complete impression of the dental arch.
Size 4 proportions pair an upper tray of 70 mm (2.76 in) by 53 mm (2.09 in) with a lower tray of 67 mm (2.64 in) by 50 mm (1.97 in), so both arches are recorded at the same size.
Sterilizable plastic construction allows sterilization in an autoclave at 121 °C (250 °F) or by chemical process.
Supplied as a pair: one upper tray and one lower tray are supplied together, ready for chairside use.
Technical Specifications
Material: Plastic.
Size: Size 4.
Color: White.
Upper Tray Dimensions: Height 28 mm (1.10 in), width 70 mm (2.76 in), length 53 mm (2.09 in).
Lower Tray Dimensions: Height 23 mm (0.91 in), width 67 mm (2.64 in), length 50 mm (1.97 in).
Dimensional Tolerance: All dimensions are external reference values and may vary by ±2.0 mm (±0.08 in).
Sterilization: Autoclave at 121 °C (250 °F) or chemical sterilization.
Compatibility: Impression materials, including alginate.
Purpose: Taking upper and lower dental arch impressions in size 4.
Certifications: FDA Approved, CE Approved, ISO 9001:2015, ISO 13485:2016.
Country of Manufacture: Brazil.
Package Includes: 1 upper impression tray and 1 lower impression tray (1 pair).
Clinical Applications
Orthodontic impressions: upper and lower arch records for diagnosis, treatment planning, and appliance fabrication in arches that fit the size 4 dimensions.
Prosthetic dentistry: alginate impressions for study models and laboratory workflows.
Restorative and general dentistry: arch impressions for clinical assessment, patient documentation, and treatment records.
Need size 4 impression trays for your operatory?
Order the Morelli Plastic Trays Upper & Lower #4 and take upper and lower arch impressions with a sterilizable tray sized for the arch.
