Revised Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (First Revision) which is identical with ISO 3964 : 2016 ‘Dentistry — Coupling dimensions for handpiece connectors’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Dentistry Sectional Committee and approval of the Medical Equipment and Hospital Planning Division Council.

This standard was originally published in 1987 which was identical with ISO 3964 : 1982 ‘Dental rotary instruments — Nominal diameters and designation code number’. The first revision of this standard has been undertaken to align it with the latest version of ISO 3964 : 2016.

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions and terminologies 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’.

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.