Digital Dentristry

Types of Sleeves for Guided Surgery

Main types of Sleeves for Guided Surgery are as follows:

Universal vs. System-Specific Sleeves

System-Specific Sleeves: Most implant systems (e.g., Sweden-Martina, Straumann) feature proprietary guided surgery systems with custom-manufactured sleeves tailored specifically to their instruments.
Universal Sleeves: Manufacturers produce a standardized osteotomy and sleeve system that automatically calibrates to the target implant length regardless of the brand (e.g., 3DDX / 3D Diagnostix).
Software Compatibility: Not all planning software supports every universal system. The aforementioned ones are fully supported by CoDiagnostix and RealGuide (author's note).

Pilot Sleeve: Used exclusively for a single osteotomy—most commonly with the initial pilot drill—to mark the precise osteotomy site. Subsequent drilling and implant placement are completed freehand.
Pin Sleeve: Designed specifically to guide the insertion of fixation pins to secure the surgical template.
Fully Guided Sleeve: The standard sleeve used in fully guided protocols. The entire drill sequence and the implant itself pass directly through this sleeve.
Combined Sleeves: Typically found in universal systems, these utilize a "sleeve-in-sleeve" (nested) approach to accommodate multiple drill diameters throughout the osteotomy (e.g., Steco guided surgery system).
Modified / Sleeveless Channels: Utilized by experienced clinicians to customize workflow. For instance, after adjusting software settings, the physical metal sleeve can be omitted entirely, leaving a direct guide channel printed into the surgical resin.

Inserted Physical Sleeve: A pre-manufactured metal or plastic sleeve is inserted into the 3D-printed guide (e.g., Sweden-Martina).
Direct Resin Channel (Sleeveless): The guide channel itself acts as the sleeve (e.g., Osstem/Hiossen). This eliminates potential manual errors such as angular/vertical misplacement of physical sleeves by dental technicians or resin overflow inside the sleeve cavity.
Calibration Requirements: Printed channels require precise 3D printer calibration to achieve the exact diameter for drill passage. Some systems offer dedicated reaming/calibration instruments to strip excess material (e.g., MegaGen), while others utilize a calibration matrix or pre-set software offsets (e.g., CoDiagnostix, RealGuide).

Most commonly manufactured from either medical-grade metal (titanium/stainless steel) or specialized plastics.

Shape: Most frequently hexagonal, elliptical, or cylindrical.
Retention: Sleeves incorporate retentive elements (grooves, flanges, or knurling) to mechanically lock into the surgical guide resin. For example, Versah sleeves were originally smooth cylinders but were later updated to feature retention elements.