This standard specifies the diagnostic criteria and treatment principles for occupational tooth erosion. This standard applies to occupational tooth erosion caused by exposure to various acid mists or acid anhydrides during work. GBZ 61-2002 Occupational tooth erosion diagnostic standard GBZ61-2002 standard download decompression password: www.bzxz.net

ICS13.100
National Occupational Health Standard of the People's Republic of China GBZ61—2002
Diagnostic Criteria Occupational Dental Erosion
Diagnostic Criteria Occupational Dental ErosionPublished on April 8, 2002
Implemented on June 1, 2002
Ministry of Health of the People's Republic of China
Article 6.1 of this standard is recommended, and the rest are mandatory. This standard is formulated in accordance with the Law of the People's Republic of China on the Prevention and Control of Occupational Diseases. From the date of implementation of this standard, if there is any inconsistency between the original standard GB16381-1996 and this standard, this standard shall prevail. Occupational activities involving exposure to acid mist may cause dental erosion. This standard is formulated to protect the health of workers and facilitate the prevention and control of dental erosion.
Appendix A of this standard is an informative appendix, and Appendix B is a normative appendix. This standard is proposed and managed by the Ministry of Health of the People's Republic of China. This standard was drafted by Zhuzhou Refinery Workers Hospital, and Shanghai Sixth People's Hospital participated in the drafting. This standard is interpreted by the Ministry of Health of the People's Republic of China. ..comDiagnostic criteria for occupational tooth erosion
GBZ61-2002
Occupational tooth erosion is a demineralization defect of tooth hard tissue caused by long-term exposure to various acid mists or acid anhydrides. Its clinical manifestations include different degrees of defects in the crowns of the anterior teeth, as well as teeth sensitive to cold, hot, sour, sweet and other stimuli, often accompanied by gingivitis, gingival bleeding, toothache, loose teeth, etc. In severe cases, most of the crowns are defective, or only residual roots are left, and there may be pulp cavity exposure and pulp lesions.
1 Scope
This standard specifies the diagnostic criteria and treatment principles for occupational tooth erosion. This standard applies to occupational tooth erosion caused by exposure to various acid mists or acid anhydrides during manual labor. 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties reaching an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version shall apply to this standard.
GB/T16180
3 Diagnostic principles
Identification of the degree of disability caused by work-related injuries and occupational diseases of employees Based on the occupational history of exposure to acid mist or acid anhydride, the clinical manifestations mainly of anterior tooth hard tissue damage, and reference to the results of on-site labor hygiene surveys, a comprehensive analysis is conducted, and other tooth hard tissue diseases are excluded before diagnosis can be made. 4 Observation subjects
Those with two or more teeth in the anterior area suspected of tooth acid erosion can be listed as observation subjects. 5 Diagnosis and classification standards
5.1 First degree dental erosion
If two or more teeth in the anterior area are suffering from first degree dental erosion, they can be diagnosed as first degree dental erosion. 5.2 Second degree dental erosion
If two or more teeth in the anterior area are suffering from second or third degree dental erosion. They can be diagnosed as second degree dental erosion. 5.3 Third degree dental erosion
If two or more teeth in the anterior area are suffering from fourth degree dental erosion, they can be diagnosed as third degree dental erosion. Treatment principles
6.1 Treatment principles
6.1.1If there are symptoms of dentin hypersensitivity, fluoride or acid-proof desensitizing toothbrushes or fluoride water rinses can be given. If necessary, desensitization treatment can be performed with drugs.
6.1.2Whether to perform tooth restoration for first degree dental erosion can be decided according to the specific situation. For second degree dental erosion, tooth restoration should be performed as soon as possible. Third degree tooth erosion can be restored after pulp disease and its complications are treated. 6.2 Other treatments
Observation object: Review every six months, no special treatment is required..com6.2.2
First, second and third degree tooth erosion: After treatment and restoration, acid-free operation can be continued under enhanced protection conditions. Instructions for the correct use of this standard
See Appendix A (Informative Appendix) and Appendix B (Normative Appendix). Appendix A
(Informative Appendix)
Instructions for the correct use of this standard
A.1 This standard is only applicable to occupational tooth erosion caused by prolonged exposure to acid mist or acid anhydride during the manufacture and application of various acids.
A.2 Occupational tooth erosion mainly manifests in the anterior teeth of the upper and lower jaws, namely the central incisors, lateral incisors and canines, and early lesions are mostly in the 1/3 of the labial lateral incisor.
A.3 Non-occupational factors such as acidic foods, beverages, drugs and certain diseases can also cause tooth erosion. Abrasion, wear, trauma, enamel hypoplasia and dental fluorosis can also cause damage to tooth hard tissues and should be identified based on occupational history, medical history and clinical features.
A.4 Usually in a person's mouth, there are multiple teeth with different levels of erosion. As a whole, the diagnostic grade of tooth erosion should be determined based on the two or more teeth with the most severe erosion grade. Example 1:
Example 2:
Example 3:
If only one tooth has the most severe erosion grade, determine its diagnostic grade.
Example 4:
Example 5:
First degree tooth erosion
Second degree tooth erosion
III Third degree tooth erosion
To avoid misdiagnosis, the second tooth with the most serious erosion level should be treated according to II
First degree tooth erosion
Second degree tooth erosion
5 In addition to symptomatic treatment, the treatment of tooth erosion mainly adopts various methods to repair the tooth defect. A.5
B.1 Oral examination requirements
Appendix B
(Normative Appendix)bZxz.net
Oral examination requirements and judgment criteria
B.1.1 When asking about the medical history, attention should be paid to whether there is a history of toothache, the location and nature of the pain, whether it is spontaneous pain or provoked pain, and the provoking factors.
B.1.2 Oral examination should be conducted with appropriate lighting (either daylight or light). Routine examinations should be performed using a mouth mirror, probe, and tweezers by visual inspection, probing, and immediate examination. If necessary, hot and cold stimulation tests or electric vitality tests, X-ray examinations, etc. should be performed. The examination results should be recorded separately according to the tooth position.
B.2 Criteria for judging tooth erosion
B.2.1 Suspected tooth erosion (code O+): The enamel surface on the labial side is smooth and shiny, the transparency of the incisal tip is increased, the incisal edge is rounded or the transparency of the tooth surface is reduced, and it is ground glass-like milky white, but there is no tooth substance defect. B.2.2 First-level tooth erosion (code I): Only the enamel on the labial surface is defective, which is more common in the 1/3 of the lateral lip incisal tip, and the incisal edge becomes thinner and translucent: or the enamel in the middle of the labial surface is an arc-shaped concave defect. The surface is smooth, with no obvious boundary with the surrounding enamel. B.2.3 Secondary dental acid erosion (code II): The defect reaches the shallow layer of dentin, mostly in a slope shape, starting from the incisal edge and cutting towards the labial surface of the crown. A relatively transparent enamel layer can be seen around the exposed dentin. B.2.4 Tertiary dental acid erosion (code III): The defect reaches the deep layer of dentin, and the center of the dentin exposed on the defect surface, which is equivalent to the original pulp cavity, can be seen. A round or oval brown-yellow dentin area. However, there is no pulp cavity exposure and no pulp lesions. B.2.5 Fourth-level dental acid erosion (code IV): The defect reaches the deep layer of dentin. Although there is no pulp cavity exposure, there are secondary pulp lesions: or the defect has reached the pulp cavity; or most of the crown is defective, leaving only residual roots. ..com
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