IS 15311-2: Dental Rotary Instruments - Shanks, Part 2: Shanks Made of Plastics

10 Pages·2003·1 MB·English

by  Bureau of Indian Standards

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IS 15311-2 (2003): Dental Rotary Instruments - Shanks, Part
2: Shanks Made of Plastics [MHD 8: Dentistry]
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IS 15311 ( Part 2 ) :2003”
ISO 1797-2:1992

Indian Standard
DENTAL ROTARY INSTRUMENTS — SHANKS
PART 2 SHANKS MADE OF PLASTICS
ICS 11.060.20

@ BIS 2003
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002

February 2003 Price Group 2
Dentistry Sectional Committee, MHD 8
NATIONAL FOREWORD
This Indian Standard ( Part 2 ) which is identical with ISO 1797-2:1992 ‘Dental rotary instruments —
Shanks — Part 2: Shanks made of plastics’ issued by the International Organization for Standardization
(ISO )was adopted by the Bureau of Indian Standards on the recommendation of the Dentistry Sectional
Committee and approval of the Medical Equipment and Hospital Planning Division Council.
This standard is one of the series of basic standards on dental rotary instruments and constitutes an
important link between the standards on dental rotary instruments and those on dental hand-pieces.
This standard under general title ‘Dental rotary instruments — Shanks’ is being published in two parts.
Other part is as follow:
Part 1 :Shanks made of metals
The text of International Standard has been approved as suitable for publication as Indian Standard
without deviations. Certain conventions are, however, not identical to those used in Indian Standards.
Attention is particularly drawn to the following:
a) Wherever the words ‘International Standard’ appear referring to this standard, they should be
read as ‘Indian Standard’; and
b) Comma ( ,) has been used as a decimal marker while in Indian Standards, the current practice
is to use a point ( .) as the decimal marker.
Inthis adopted standard, reference appears to certain International Standards for which Indian Standards
also exist. The corresponding Indian Standards which are to be substituted in their place are listed
below along with their degree of equivalence for the editions indicated:
International Corresponding Indian Standard Degree of
Standard Equivalence
ISO 527-1:1993 IS 13360 ( Part 5/See 1 ) :1996 Plastics — Methods Identical

of testin g: Part 5 Mechanical properties, Section 1

Determinat ion of tensile properties — General
principles
ISO 527-2:1993 IS 13360 ( Part 5/See 2 ) :1996 Plastics — Methods of do
testing: Part 5 Mechanical properties, Section 2
Determination of tensile properties — Test conditions for
moulding and extrusion plastics
ISO 1797-1:1992 IS 15311 ( Part 1 ) :2003 Dental rotary instruments — do
Shanks: Part 1 Shanks made of metals ( under print)
The Technical Committee responsible for the preparation of this standard has reviewed the provisions of
ISO 3274, ISO 3630-1 l), ISO 3630-2 and ISO 4288, referred in this adopted standard and has decided
that these are acceptable for use in conjunction with this standard.
For the purpose of deciding whether a particular requirement of this standard is complied with, the final
value, observed or calculated, expressing the result of a test, shall be rounded off in accordance with
IS 2 : 1960 ‘Rules for rounding off numerical values ( revised )’. The number of significant places
retained in the rounded off value should be the same as that of the specified value in this standard.

‘)TObe published.
IS 15311 (Part 2) :2003
1S0 1797-2:1992
Indian Standard
DENTAL ROTARY INSTRUMENTS — SHANKS
PART 2 SHANKS MADE OF PLASTICS
1 Scope (stylus) instruments of consecutive proti/e trans-
formation – Contact profile meters, system M.
This part of ISO 1797 specifies shanks of dental ro-
tary instruments made of plastics materials and ISO 3630-1:–l), Dents/ root-cana/ instruments —
gives measurement methods for the verification of Part 1:Files, reamers, barbed broaches, rasps, paste
the dimensions. A quality requirement is added in carriers, explorers and cotton broaches.
order to ensure a high quality level.
ISO 3630-2:1986, Dents/ root cana/ instruments —
Subclauses 4.6 and 4.7 do not apply to disposable Part 2: Enlargers.
(single-use) instruments,
ISO 4288:1985, Rules and procedures for the meas-
Shanks made of plastics materials are designed for
urement of surface roughness using stylus instru-
use at speeds less than 5000 r/rein,
ments
2 Normative references
The following standards contain provisions which, 3 Symbols and term”s -
through reference in this text, cons titute provisions
of this part of ISO 1797. At the time of publication, Symbols and terms are shown in figures 1to 3, with
the editions indicated were valid. All standards are the following key:
subject to revision, and parties to agreements based
dl diameter of shank
on this part of ISO 1797 are encouraged to investi-
gate the possibility of applying the most recent edi-
dz diameter in the groove
tions of the standards indicated below. Members of
IEC and ISO maintain registers of currently valid ,$ D-flat dimension
International Standards.
/1 fitting length
lSO/R 527:1966, P/astics – Determination of fensi/e
properties. /2 shoulder to end length
/3 shoulder to groove length
ISO 1797-1:1992, Dents/ rotary instruments – Shanks
– Part f: Shanks made of meta/s. /4 width of groove
ISO 3274:1975, /nsfruments for the measurement of NOTE1 Figures2 and 3 are given forconsistencywith
surface roughness by the profile method — Contact 1s0t797-1.
1) To be published.

1
IS 15311 (Part 2):2003
ISO 1797-2:1992
IJ
A-A
A
d L
.—. _ . .— .,_ ..-. G
e
1--1
lb
Figure 1 – Type 1 shank
11 [q
I
Figure 2 – Type 2 and typa 4 shank Figure 3 – Type 3 shank
IS 153,11 (Part 2) :2003
ISO 1797-2:1992
4 Requirements
4.3 Surface Irregularities – Flattened
portions
4.1 Material
Shanks shall be made of plastics materials. The type
Surface irregularities shall comply with the following
of plastics and treatment are at the discretion of the
specifications, which relate to figure 5:
manufacturer.
d, = 2,35 &
4.2 Dimensions
x = 0,04 max.
The dimensions and tolerances shall be as shown
in figures 4 and 5.
d2< d,
Dimensions Inmillimetres
Surface roughness values inmlcrometres
1,
—
2,7-:,3
.
l 0,05
1,0 0
A-A
A
1 -
I
.—. _ .._ .
t
I
‘B
t
(),9l0,05
Figure 4 – Shank

B-B(2:1)
Figure 5 – Flattened portions, cross-section B-B of figure 4

3
IS 15311 (Part 2):2003
ISO 1797-2:1992
4.4 Surface roughness 5 Test methods
The surface roughness within /1shall be as specified
5.1 Shank dimensions
in figure4.
Measurements shall be made using either tungsten
Testing shall be carried out in accordance with
carbide ring gauges checked regularly with mating
ISO 3274 and ISO 4288.
plugs, air gauges, or dial indicators, graduated in
divisions of 0.001 mm.
4.5 Tensile strength
The diameter d, shall apply over the length Il.
The tensile strength shall be a minimum of
84 N/mm*.
5.2 Other dimensions
Testing shall be carried out in accordance with
Measurements shall be made using either appro-
lSO/R 527.
priate gauges with tungsten carbide faces, tungsten
carbide-faced micrometer calipers, toolmakers’
4.6 Heat resistance and colour stability
microscopes, or dial indicators.
This requirement does not apply to disposable in-
5.3 Heat resistance, coiour stabiiity and
struments.
stabii{ty against sweiiing and chemicais
Shanks shall show no signs of deformation and
there shall not be recognizable colour change after 5.3,1 Apparatus
testing.
Steam autoclave and dry heat sterilizers.
Testing shall be carried out in accordance with 5.3.
5,3.2 Procedure
4.7 Stabiiity against sweiiing and chemicais
Autoclave ten instruments of each size under
This requirement does not apply to disposable in- pressure of 220 kPa (2,2 bar) at (136 + 2) “C for
struments. 20 min and dry heat sterilize at (180 + 5) “C for
120 min.
Shanks shall not swell beyond the specified toler-
ance range of figure4 when treated with disinfecting
or sterilizing solutions as recommended by the 6 Quality control
manufacturer. Shanks shall meet the tolerance
range of figure4 when sterilized ac cording to 5.3. The specification of ISO 1797-1:1992, clause 8 for

shanks of type 1 applies.

Testing shall be carried out in acco rdance with 5.1
and 5.2.
4.8 Coiour code
The colour of the plastic shanks shall comply with
the colour code of the instrument for which it is
used. For root-canal instruments, this shall meet the
requirements of ISO 3630-1 and ISO 3630-2,
Testing shall be carried out by visual inspection.
Bureau of Indian Standards
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harmonious development of the activities of standardization, marking and quality certification of goods and
attending to connected matters in the country.
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Review of Indian Standards
Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed
periodically; a standard along with amendments isreaffirmed when such review indicates that no changes are
needed; ifthe review indicates that changes are needed, it istaken up for revision. Users of Indian Standards
should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue
of ‘BIS Catalogue’ and ‘Standards :Monthly Additions’.
This Indian Standard has been developed from Doc :No. MHD 8(2796 ).
Amendments Issued Since Publication
Amend No. Date of Issue Text Affected
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