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1、I . I - r J I S T*6510 85 4933608 0071769 3 UDC 665.94 : 61 5.462 : 61 6.31 4 JAPANESE INDUSTRIAL STANDARD Dental Base Plates JIS T 6 5 1 0 - 1 9 8 5 Translated and Published Japanese Standards Association Printed in Japan 4s Copyright Japanese Standards Association Provided by IHS under license wit
2、h JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:10:19 MSTNo reproduction or networking permitted without license from IHS -,-,- J I S T*b510 85 111 4933608 0071770 T In the event of any doubt arising, the original Standard in Japanese is to be final authority.
3、 Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:10:19 MSTNo reproduction or networking permitted without license from IHS -,-,- J I S T*b51O 45 = 4733608 0071771 1 UDC 665.94:6 15.4626
4、16.3 14 JAPANESE INDUSTRIAL STANDARD J I S Dental Base Plates T 6510-1985 1. Scope base, hereinafter, referred to as the “base plate“ having natural resin as main component used for dental service. This Japanese Industrial Standard specifies the dental base plate for temporary . Remark: The units an
5、d the numerical values given in in this standard are in accordance with the conventional system of units and appended for informative reference. 2. Quality The quality of base plate shall comply with the following requirements. (1) The base plate shall be unitform in thickness, softened at about 70C
6、 and able to be easily press formed to the surface of model. at the mouth temperature or below. Further, the formed base plate shall not be softened to be deformed (2) (3) When tested in accordance with 3.1, the breakage strength shall be 19.6 N/mm2 (2 kgf/mm2 minimum. When tested in accordance with
7、 3.2, the elongation shall be 5 % maximum. i k Applicable Standard: JIS T 6501-Acrylic Denture Base Resin Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:10:19 MSTNo reproduction or netw
8、orking permitted without license from IHS -,-,- J I S T*b51U 85 4933bU8 U073772 3 2 T 6510-1985 3. Test Method 3.1 Breakage Strength Test specified in 5.4 of JIS T 6501. The tester shall accordingly comply with that The test piece shall be 10 mm in width, 30 mm in length, 1.4 i : 0.1 mm in After fir
9、stly thickness and 25 mm in distance between supporting points. carried out at a room temperature of 20 to 25C or in the water. statically applying a load of 4.9 N (0.5 kgf) to the centre of test piece, a load of 1.96 N (0.2 kgf) is added each elapse of one minute and the load is applied until the t
10、est piece is broken, breakage strength is obtained from the following formula. The test shall be The load when it is broken is summed up and the Breakge strength N/mm2 kgf/mm2) (l) = 26t2 3PL where L : distance between supporting points (mm) P : load N (kgf) b : width of test piece (mm) t : thicknes
11、s of test piece (mm Note (1) 1 N/rnm2 = 1 MPa 3.2 Elongation Test The test piece shall be 10 mm in width, 50 mm in length, 1.4 2 0.1 mm in thickness, and about 30 mm in gauge length. After making the test piece stand in the water at 20 2 2C for. 5 minutes, the bottom end of test piece is attached to
12、 the metal stand at the bottom of a water tank (37 I 1C in water temperature) of the apparatus as given in Attached Figure. After keeping it as it is for 5 minutes, the top end of test piece is pulled upward with a dead weight of 50 g in mass and taken out from the water tank after further being kep
13、t therein for 5 minutes. After making the test piece stand in the water at 20 I 2C for 5 minutes, the gauge length is measured and the elongation is calculated from the following formula. Gauge length after test - gauge length before test Gauge length before test Elongation (%) = x 100 4. Designatio
14、n The product shall be designated by name, Example: Dental base plate Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:10:19 MSTNo reproduction or networking permitted without license fro
15、m IHS -,-,- J I S T*b530 85 4933b08 0073773 5 3. T 6510-1985 5. Marking Q The package of base plate shall be marked with the following information. (1) Name (2) (3) Manufacturing number or mark Distinction of upper or lower jaws (4) Manufacturers name and location Attached Figure Base Plate Elongati
16、on Tester Schematic Diagrams Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:10:19 MSTNo reproduction or networking permitted without license from IHS -,-,- 4 t J I S TM6510 B5 O 4933608
17、 0073774 7 O T 6510-1985 Edition 1 Japanese Text Established by Minister of Health and Welfare Date of Establishment: 1965-02-01 Date of Revision: 1985-10-22 Date of Public Notice in Official Gazette: 1985-11-02 Investigated by: Japanese Industrial Standards Committee Divisional Council on Mechical
18、and Safety Facilities This English translation is published by: Japanese Standards Association 1-24, Akasaka 4, Minato-ku, Tokyo 107 Japan O JSA, 1988 Rinted i n Tokyo by Hohbunsha Co., Ltd. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:10:19 MSTNo reproduction or networking permitted without license from IHS -,-,-