European International Journal of Multidisciplinary Research
and Management Studies
70
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TYPE
Original Research
PAGE NO.
70-74
DOI
OPEN ACCESS
SUBMITED
17 December 2024
ACCEPTED
19 January 2025
PUBLISHED
21 February 2025
VOLUME
Vol.05 Issue02 2025
COPYRIGHT
© 2025 Original content from this work may be used under the terms
of the creative commons attributes 4.0 License.
Preparation of Teeth for
Veneers
Inogamov Sherzod Muhamatisakovich
Assistant Department of orthopedic dentistry, Samarkand State Medical
University, Samarkand, Uzbekistan
Abstract:
Veneers are porcelain or ceramic linings that
replace the outer layer of teeth. They allow you to
correct irregularities in the shape and color of the tooth,
and also protect your teeth (for example, when playing
wind instruments). Veneers are made according to the
shape and color of the patient's teeth and their wishes.
Keywords:
Porcelain, shape and color of the tooth.
Introduction:
Veneers are porcelain or ceramic linings
that replace the outer layer of teeth. They allow you to
correct irregularities in the shape and color of the tooth,
and also protect your teeth (for example, when playing
wind instruments). Veneers are made according to the
shape and color of the patient's teeth and their wishes.
A veneer is a plate with a thickness of 0.2 mm or more
that is glued to the labial, that is, the labial side of the
tooth and performs aesthetic, restorative, masking,
phonetic and alimentary functions. The composite plate
is an organic bisgma resin filled with ceramic or glass
microparticles. An example of a ceramic plate is lithium
disilicate glass ceramics.
For the manufacture of veneers, by and large,
aggressive preparation of tooth enamel is not required,
in some cases (microdentation or abrasion) it is possible
to manufacture veneers without preparation of tooth
tissues. With the observance of occlusal and
gnathological principles in the clinic by the operator and
compliance with all technological regulations in the
laboratory by the technical engineer, this restoration
method has long-term forecasts and can be widely
recommended for use.
Preparation of teeth for veneers is a mandatory step
necessary for the installation of any non
–
removable
structures. During the procedure, the surface dental
tissue is sanded (removed). In this way, the tooth is
shaped so that it can be covered with a prosthesis
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European International Journal of Multidisciplinary Research and Management Studies
without increasing the volume.
Until recently, dissection was considered one of the
most unpleasant and painful dental procedures.
Today, it is performed absolutely painlessly, without
causing the patient any discomfort.
Features of dental preparation for veneers
Before manipulation, it is important to calculate the
tooth depth correctly so as not to touch the pulp. For
this purpose, an X-ray or CT scan is performed, which
determines the anatomical and topographic nuances of
the location of the pulp chamber, as well as the
prevalence of a possible carious process.
Diagnosis usually includes a functional assessment of
the bite, a photoprotocol. All this is required to prevent
risks and manufacture reliable and comfortable micro-
prostheses, which are veneers.
At the preparation stage, professional dental hygiene
and caries treatment are mandatory.
Odontopreparation is, in fact, a surgical procedure. It
provides for the permanent excision of hard dental
tissues, including destroyed, softened and healthy
ones. That's why doctors follow the principles of gentle
sanding, removing the enamel layer to a minimum.
There are several turning technologies with preparation
or preservation of the cutting edge of the tooth. In the
first case, the integrity of the latter is not violated, in the
second two options are possible.:
• the cutting edge is sharpened around the entire
perimeter;
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European International Journal of Multidisciplinary Research and Management Studies
• a step ledge is created on the palatine side.
Methods of preparation of teeth for veneers
Dissection can be carried out in several ways. The
choice is determined by the planned outcome and the
clinical situation.
To date, there are 4 methods:
• Laser;
• Ultrasonic;
• air
-abrasive (sandblasting);
• tunnel.
Laser
In dentistry, a pulsed laser is used, which destroys the
surface layer of teeth by heating the water contained
in it. The deep layers of enamel and dentin are not
affected. The fragments of the ground fabrics are
cooled and washed off with an air-water jet.
Laser dissection is a gentle, delicate technique that
preserves the maximum amount of tissue. It is suitable
for the installation of veneers of all types, prevents
bleeding, infection. After the procedure, the sensitivity
of the teeth does not increase.
Ultrasonic
Ultrasound preparation is performed using a high-
frequency vibration ultrasonic scaler, which removes
the top layer of enamel safely and painlessly.
Ultrasound has no negative effect on the pulp chamber
and does not overheat the tissues.
This is a relatively new technique of gentle tooth
grinding, in which accidental damage to neighboring
units and healthy tissues is excluded. Due to the special
shape of the tips, which provide the strongest
adhesion to the enamel, it can be used to install even
the thinnest veneers.
Air-abrasive (sandblasting)
For sandblasting, a device is used that supplies an air-
abrasive jet under pressure. Sanding occurs due to the
ingress of abrasive particles onto the enamel, which
can be aluminum oxide or glass powder.
The air-water flow with the smallest solid particles
gently removes the surface layer of the enamel,
thereby creating a uniform roughness. After this
treatment, the veneer is firmly attached to the tooth
without damaging the pulp and dentin.
Tunnel
Tunneling is carried out using turbine installations
equipped with speed regulators and special nozzles.
The latter are made of metal alloys or diamond-coated.
The main advantage of tunnel preparation is the ability
to control the thickness of the layer to be removed.
The essence of the method lies in a thin profile inside
the cutting edge of the tooth: this cut is called a tunnel.
The outer
–
frontal
–
surface of the enamel is not
sharpened. Tunnel preparation is considered the most
gentle, since the natural shape and volume of dental
tissues are preserved.
The stages of preparation of teeth for veneers
The preparation of teeth for veneers is a delicate,
painstaking job that requires precision and skill from a
doctor. Its stages depend on the type of
microprostheses, but they necessarily include a
thorough examination with an orthopantomogram or
CT scan, and functional tests to assess bite.
When installing composite veneers made of filling
material, the removal of casts is not required, the
microprosthetics procedure is performed in one visit.
0.3-0.5 mm of enamel is sanded from the outer surface
of the tooth, after which the composite is applied in
layers in the required amount.
This stage is necessary, since an unshaded tooth will be
too convex, and its shade will be unnatural and opaque.
They try to maintain the boundaries of preparation
within the limits of tooth enamel.
Before installing ceramic veneers, casts are taken from
the dentition, on the basis of which a virtual model of
the future smile is made. Several options are being
created that are suitable for the shape and size of the
patient's teeth
–
a wax model of the wax-up jaw.
The selected option is printed out and becomes real,
which you can try on and feel its convenience. If
necessary, make adjustments on the spot, as this is a
mock-up model. That is, the patient sees the future
result before the manufacture of veneers begins.
The selection stage often takes longer than the
production, and can last up to three weeks.
Coordinating the design of new teeth is the most crucial
moment.
Thus, preparation for veneers belongs to a complex
section of orthopedic treatment. That is why the
installation of micro
–
prostheses fully justifies its cost,
especially considering the price of the material - dental
porcelain.
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