YY 0302.2-2016Dentistry—Rotary bur instruments - Part 2: Finishing burs (English PDF)

Foreword

YY 0302 consists of the following two parts.

--- YY 0302.1 Dental Rotary Gear - Part 1. Steel and Carbide Needles;

YY 0302.2 Dental rotation gears - Part 2. Trimming needle. This part is part 2 of YY 0302.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This part of the use of re-drafting to amend the use of ISO 3823-2.:2003 "dental rotary needle device Part 2. dressing with the needle" And its amendment 1..2008. The main changes are as follows.

On the normative reference documents, this standard has made the adjustment of technical differences to meet the technical conditions of China, the adjustment of the situation focused Reflected in Chapter 2, "Normative references", as follows.

GB/T 6682-2008 Analytical laboratory water specifications and test methods (ISO 3696. 1987, MOD)

YY/T 0149-2006 Test method for corrosion resistance of stainless steel medical equipment (ISO 13402.:1995, MOD)

YY 0967.1-2015 Dental rotation tool bar Part 1. Metal rod (ISO 1797-1.:1992, MOD)

YY/T 0873.1-2013 Digital coding systems for dental rotating instruments - Part 1. General characteristics (ISO 6360-1.:2004, IDT)

YY/T 0873.3-2014 Digital coding systems for dental rotating instruments - Part 3. Characteristics of needle and tool (ISO 6360-3. 2005, IDT)

YY/T 0874-2013 Test method for dental rotating instruments (ISO 8325.:2004, IDT)

Introduction

This section is one of the criteria for dental rotating instruments.

This section contains modifications to the requirements for carbide finishing. The requirements for the needle for steel dressing remain the same.

The requirements for size and other requirements for the use of needles for car finishing and carbide finishing for car finishing as specified in this section are considered to be It is important to ensure that these needles are interchangeably and safely used in dental clinics.

The nominal diameter of the working part listed in Tables 1 to 68 corresponds to the diameter specified in YY/T 1011-2014.

1 Scope

YY 0302 this part of the 17 most commonly used shape of steel and carbide repair needle size and related requirements, the package Including the quality control requirements and marking requirements of these devices.

2 Normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this document. For undated references, the latest edition (including all modifications) applies to this document.

GB/T 6682-2008 Analytical laboratory water specifications and test methods (ISO 3696. 1987, MOD)

YY/T 0149-2006 Test method for corrosion resistance of stainless steel medical equipment (ISO 13402.:1995, MOD)

YY 0967.1-2015 Dental rotation tool bar Part 1. Metal rod (ISO 1797-1.:1992, MOD)

YY/T 0873.1-2013 Digital coding systems for dental rotating instruments - Part 1. General characteristics (ISO 6360-1.:2004, IDT)

YY/T 0873.3-2014 Digital coding systems for dental rotating instruments - Part 3. Characteristics of needle and tool (ISO 6360-3. 2005, IDT)

YY/T 0874-2013 Test method for dental rotating instruments (ISO 8325.:2004, IDT)

3 Classification

According to the working part of the material, steel and carbide repair needle is divided into the following two types.

--- 1 type. steel trim with needle;

--- 2 type. Carbide trim needle.

4 Symbols

The following symbols are used in this section. d1 working part diameter, head diameter; d2 neck diameter; d3 tip part of the diameter; l1 working part length, head length; l2 total length; alpha working part angle.

5 Request