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SWITZERLAND JOTA
jota kit 1724
All Ceramic Prep by Dr. Milko Villarroel
on the spot
Ceramic Prep all in one for Laminates and Crowns
PhD in Restorative Dentistry, São Paulo State University FOAr – Brazil.Master Dental Science, Integrated Clinic at State University of Punta Grosa – Brazil.Scientifi c Director, CWB Dental Training Curitiba, Brazil Licensed in Dental Science, University of Valparaíso.
Photo byPhoto byDr Milko VillarroelDr Milko Villarroel
Using the kit
Quality instruments for precision work
Maximising simplicity through the use of a procedure
In the search for conservative treatments, various restorative alternatives have been proposed. Dental preparation is a critically
important phase in which several parameters must be kept in mind to reach a predictable and satisfactory fi nal result. Currently,
the use of wax-ups and mock-ups enable visualisation of the amount of the dental structure that must be removed, or if this
must be minimised to have adequate space.
The balance between minimal tooth reduction and the space needed for restoration must be based in a preliminary test of the
fi nal volume for the envisioned restoration. This procedure is highly relevant, since the preservation of the dental structure
(enamel and dentin) will be refl ected in the biomechanical behaviour of the tooth. Thus, the dental preparation phase should
be based on rational and sound procedures, and should not be improvised.
The kit has a detailed sequence of instruments, corresponding to each of the steps in the procedure for preparing crowns and ceramic laminates, as described below.
Step 1
jota kit 1724
All Ceramic Prep by Dr. Milko Villarroel
on the spot
The spherical bur is used to determine the specifi c depth for each region (vestibular). For the laminate procedure, it is recommended to use a small diameter spherical bur (801.FG.012) in the cervical region and a large diameter bur (801.FG.016) in the medial and incisal regions.
Step 1 – Determining the depth
Sequence for laminates
> Determining the depth of wear using a mock-up. Using half of the spherical bur, with the
stem of the bur serving as a stop. The 801.FG.012 bur for the cervical region and 801.FG.016
for the medial and incisal region.
> Removal of the mock-up and joining the grooves with abrasion burs (blue ring).
It is suggested to use the 850.FG.014 bur for the laterals, the 850.FG.016 for the centrals
and the 850.FG.018 for the canines.
> Incisal reduction, this step will determine the clinical need for the case.
> Placement of the retractor wire.
> Cervical demarcation.
> Finishing and polishing the dental surface. Use of the fi nishing burs (red ring).
801.FG.012 850.FG.016
850.FG.016 850.FG.016850.FG.016
Step 2 – Superfi cial abrasion
Intended for vestibular abrasion, through joining the orientation grooves and creating the necessary space for defi nitive restoration. (It is suggested to use the 850.FG.014 bur for the laterals, the 850.FG.016 for the centrals and the 850.FG.018 for the canines).
jota kit 1724
All Ceramic Prep by Dr. Milko VillarroelPreparation for ceramic laminates
Step 3 – Finishing and polishing
This phase is intended to leave smooth, regular surfaces. For this, the same approach is used to prevent any alteration of the depth of the preparation.
Step 4 – Specialty burs
The goal of cervical fi nishing is better conservation of the cervical enamel and both fi nishing procedures are intended to leave a visible demarcation with minimal abrasion.
• 801F.FG.010 enables the creation of a cervical boundary
• 858F.FG.010 enables working with a knife edge
849F.FG.025 fi nishing and polishing pre-existing preparations in the posterior teeth. 858F.FG.010 elimination of contact points between the anterior teeth.
801F.FG.010 801F.FG.010
Final result
850F.FG.016
Finished and polished preparation.
on the spot
Sequence for crowns
> Determination of the abrasion depth with the 850.FG.014 bur using a mock-up to create the orientation grooves.
Remember that usually 3 dental surface planes are present, which must be kept in mind.
> Removal of the mock-up and junction of the orientation grooves.
> Elimination of the proximal contacts using the 858F.FG.010 bur.
> Incisal reduction
> Palatal abrasion using the fl ame-shaped 830.FG.023 bur.
> Gingival retraction and cervical demarcation
> Finishing and polishing of the preparation with a fi ne-grained bur (red ring).
Step 1 – Determination of the abrasion depth
Determination of the abrasion depth with an 850.FG.014 bur, using a mock-up to create the orientation grooves. Remember that usually 3 dental surface planes are present, which must be kept in mind.
Step 2 – Removal of the mock-up and junction of the orientation grooves
850.FG.016
850.FG.014
850.FG.016
Clinical step with the objective of joining the orientation grooves created in Step 1, aimed at creating the space necessary for restoration.
jota kit 1724
All Ceramic Prep by Dr. Milko VillarroelProcedure for preparing a crown
850.FG.016
Step 3 – Elimination of the proximal contacts
With the 858F.FG.010 bur
850.016850.016
Step 4 – Incisal reduction
With the objective of creating vertical space.
Step 5 – Palatal abrasion
With the 830.FG.023 fl ame-shaped bur.
830.FG.023 830.FG.023
858F.FG.010
850.FG.016
on the spot
Step 6 – Gingival reduction and cervical demarcation
Gingival protection is achieved using a retractor wire. The cervical demarcation will allow adequate space while avoiding over-contouring.
Step 7 – Refi nement at the gingival level
The goal of the fi nal stage of refi nement is to leave fl at surfaces free of roughness. Here, the instruments with a red ring (fi ne) are ideal for this purpose, since the size of the diamond particles is between 27 and 76 micrometers.
850F.FG.016
850.FG.016
850F.FG.016
850F.FG.016
on the spot
JOTA-Dealer
1080
02.5
950.
0339
- 01
/201
8
SWITZERLAND JOTA
jota kit 1724
All Ceramic Prep by Dr. Milko Villarroel
JOTA AG Rotary InstrumentsHirschensprungstrasse 2, 9464 Rüthi, SwitzerlandPhone +41 (0)71 767 79 99, Fax +41 (0)71 767 79 97info@jota.ch, www.jota.ch SWITZERLAND
0483
850.FG.014
250’000 rpm
852.FG.018 830F.FG.023
801.FG.016
300’000 rpm
850.FG.016
300’000 rpm
850F.FG.014
801.FG.012
801F.FG.010
852F.FG.018
830.FG.023
858F.FG.010
849F.FG.025
190’000 rpm
850F.FG.016
280’000 rpm 250’000 rpm
280’000 rpm
280’000 rpm 300’000 rpm
300’000 rpm
190’000 rpm 300’000 rpm
180’000 rpm
Recommended