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Compass | Crown-cutters and filling removers
Fast-cutting specialist for separating non-precious metal
separates extremely hard alloys
ceramic veneers and metal frames
Effi cient composite removal
Pressure-free separation with a perfect view
H 35 L
H 4 NP
H 4 MCL
4 COMP
4 ZR
4 ZRSH32
„Jack“ for splitting
Fast-cutting specialist for removing amalgam
For grinding down crowns
Com
posit
e
A
malgam
All-ceramic restorations Universal
Precious metal Non-precious m
etal
Fi
llings
Cro
wns
Komet Dental · Gebr. Brasseler GmbH & Co. KG · Postfach 160 · 32631 Lemgo · Export: Telefon +49 (0) 5261 701-0 · Telefax +49 (0) 5261 701-329 · [email protected] · www.kometdental.de
ca. 45°
4 5
Separation of all-ceramic crowns
• Split all-ceramic crowns with Jack (4ZRS): In front teeth, cut across the axial surface up to and beyond the inci-sal edge. Molars: Cut along the occlu-sal surface to simply break the crown open (4).
• Adhesive crowns can be opened piece by piece with crown dilating forceps (5). Start in the cervical region - as far as you can - and then remove further fragments step by step, working in an incisal or occlusal direction. Like this, lever forces exerted on the crown core can be prevented to a large extent.
• Grind down any remaining fragments with the longer crown-cutter 4ZR.
© 0
2/20
19 ·
4193
20V0
General information
• Optimum speed: (160,000 rpm in the micro motor.
• Always work with sufficient cooling (at least 50 ml/min).
• Do not exceed a maximum contact pressure of 2N.
• We recommend reducing the speed to 120,000 rpm when working on alloys that make instruments “skip”. Alternatively, you can work with a dental turbine at low contact pressure.
• For an optimum cutting performance, apply the instrument to the crown at an angle of 45° (1).
Separation of PFM crowns
• When removing PFM crowns, start with the veneer and then separate the metal frame (2, 3).
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Perfect removal of crowns