Palatal Arch Bars

The Morelli Palatal Arch Bars are pre-formed stainless steel palatal bars made from Ø0.9 mm wire, supplied in ten sizes and in two loop positions — mesial or distal. The bar connects to the lingual tubes of the molar attachments and is used to generate rotation, intrusion or torque forces and to reinforce anchorage.

Key Features

• Two loop positions — the mesial-loop bar and the distal-loop bar share the same size range and differ only in where the adjustment loop sits relative to the molars.

• Ten pre-formed sizes — from 34 mm to 55 mm, so the bar can be matched to the intermolar width instead of bent from straight wire.

• Ø0.9 mm stainless steel wire — the gauge required to transmit rotation, intrusion and torque forces without deforming.

• Connects to the lingual tubes — the arms seat into the lingual tubes of the molar attachments, so the bar is inserted and removed without chairside welding.

• Adjustable loop — the loop is activated to expand or contract the posterior segment and to fine-tune the force applied to each molar.

• Pre-formed palatal contour — reduces chairside bending time and improves reproducibility between cases.

Technical Specifications

• Material: Stainless steel

• Wire Diameter: Ø0.9 mm

• Loop Position: Mesial or distal

• Sizes: 34 mm, 37 mm, 39 mm, 41 mm, 43 mm, 45 mm, 47 mm, 49 mm, 52 mm and 55 mm

• Attachment: Inserts into the lingual tubes of the molar attachments

• Quantity: 10 pieces per package

• Purpose: Generate rotation, intrusion or torque forces on the molars and act as anchorage reinforcement.

• Certifications: FDA Approved, CE Approved, ISO 9001:2015, ISO 13485:2016

• Country of Manufacture: Brazil

• Package Includes: 10 Morelli palatal arch bars in the selected size and loop position

Clinical Applications

• Molar rotation, torque and inclination correction — the bar applies differential force to reposition first molars in all three planes.

• Anchorage reinforcement and molar distalization — ties the posterior segments together, and supports distalization when combined with an anchorage system.

• Transverse control and relative intrusion — expansion or contraction of the upper posterior segment and eruption control of the first molars.

Which loop position does your case call for?
Choose the mesial or distal loop and the size that matches the intermolar width, and the bar arrives pre-formed and ready to seat into the lingual tubes.