The Morelli SLI Self-Ligating Interactive Brackets are a stainless steel, MBT prescription case covering incisors, canines and premolars in both arches, in .022″ slot. The interactive Nitinol clip behaves passively over light round wires and engages the archwire as its dimension grows, so alignment starts with low friction and torque expression is delivered on the finishing wires.
Key Features
Interactive Nitinol Clip — passive on light round wires for free sliding, active on larger rectangular wires to transmit torque and rotation control.
Anti-Lock System — clip geometry specially designed to prevent jamming caused by plaque and tartar buildup.
Optimized Slot — curvature relief and rounded edges reduce binding and notching, preserving sliding mechanics.
MIM Construction — body injected by Metal Injection Molding as a single piece, for high dimensional precision and superior resistance.
Base Adaptation and Retention — mesiodistal and cervico-occlusal curvatures, micro pins, retention bands and sandblasted surface for mechanical anchoring.
Rounded, Low-Profile Design — small dimensions and rounded contours for patient comfort; the clip is opened and closed without special pliers.
Elastic Memory — the nickel-titanium alloy withstands mechanical deformation throughout treatment and always tends to return to its original position, keeping a consistent torque reading.
Technical Specifications
Material: Stainless steel, injected by MIM (Metal Injection Molding)
Clip: Nitinol (nickel-titanium) with elastic memory, interactive action
Slot: .022″ × .028″ (0,56 × 0,71 mm)
Prescription: MBT
System: Self-ligating interactive (SLI)
Purpose: Correction of malocclusion, including crowded and misaligned teeth
Certifications: FDA Approved, CE Approved, ISO 9001:2015, ISO 13485:2016
Country of Manufacture: Brazil
Package Includes: 20 self-ligating brackets — one complete case for a single patient: upper 15 to 25 and lower 45 to 35 (central incisors, lateral incisors, canines, first and second premolars), with hooks on canines and premolars
Torque and Angulation
Upper central incisor (11/21): torque +17° · angulation +4° · length 2,9 mm
Upper lateral incisor (12/22): torque +10° · angulation +8° · length 2,9 mm
Upper canine (13/23): torque 0° · angulation +8° · length 3,0 mm
Upper first premolar (14/24): torque -7° · angulation 0° · length 3,0 mm
Upper second premolar (15/25): torque -7° · angulation 0° · length 3,0 mm
Lower central incisor (31/41): torque -6° · angulation 0° · length 2,7 mm
Lower lateral incisor (32/42): torque -6° · angulation 0° · length 2,7 mm
Lower canine (33/43): torque 0° · angulation +3° · length 3,0 mm
Lower first premolar (34/44): torque -12° · angulation +2° · length 3,0 mm
Lower second premolar (35/45): torque -17° · angulation +2° · length 3,0 mm
Clinical Applications
Comprehensive fixed treatments that need low friction during alignment and levelling and full expression of the prescription at finishing.
Cases with rotations and torque demand in the anterior segment, where the clip must act on the rectangular wire rather than only retain it.
Practices standardising on self-ligating mechanics that prefer a single bracket covering the whole sequence, from initial alignment to detailing.
Which self-ligating system does this case call for?
Choose the SLI Interactive when the case needs free sliding at the start and active torque expression on the finishing wires from the same bracket.