The Morelli SLP Self-Ligating Passive Brackets are a stainless steel, MBT prescription case covering incisors, canines and premolars in both arches, in .022″ slot. The passive Nitinol clip closes over the archwire without pressing it, turning the slot into a smooth tube: friction stays at its lowest and the wire runs free through the whole sequence.
Key Features
Passive Nitinol Clip — closes without compressing the archwire, keeping resistance to sliding at a minimum and preserving light, continuous forces.
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 the clip stable until debonding.
Technical Specifications
Material: Stainless steel, injected by MIM (Metal Injection Molding)
Clip: Nitinol (nickel-titanium) with elastic memory, passive action
Slot: .022″ × .028″ (0,56 × 0,71 mm)
Prescription: MBT
System: Self-ligating passive (SLP)
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
Sliding mechanics and space closure, where every gram lost to friction reduces the force actually reaching the teeth.
Crowding and initial alignment with light round wires, using long working intervals and reduced chair time.
Cases planned for light, continuous forces, including patients who report discomfort with conventional ligation.
Which self-ligating system does this case call for?
Choose the SLP Passive when the treatment plan is built on minimum friction and free wire sliding through the whole sequence.