Flexibility and hardness of dental stainless steel wrought wires used inThailand
ความสามารถในการคืนตัวและความแข็งของลวดดัดเหล็กกล้าไร้สนิมทางทันตกรรม
Pojjanut Benjakul, Assoc. Prof., D. of Prosthetic Dentistry, F. of Dentistry, PSU.
Chanya Cheunarrom, D. of Prosthetic Dentistry, F. of Dentistry, PSU.
Chakree Ongthiemsak, D. of Prosthetic Dentistry, F. of Dentistry, PSU.
Corresponding e-mail : bchanpen@ratree.psu.ac.th
Grant : Prince of Songkla University
Published : Research Report
Key words : stainless steel wrought wire, flexibility, hardness
Stainless steel wrought wires, that were used as clasp arms for removable partial dentures in Thailand were compared with some used in some other countries in the as-received condition in flexibility, Vickers' microhardness and composition. The results showed that there were significant differences (p<0.05) among the wires, especially a Japanese stainless steel wire (SK) which revealed the obvious differences. It had the lowest proportional limit and microhardness, but the flexibility was almost the same. The chemical composition of each wire was not greatly different. There were about 18-20 wt% chromium and 8-9 wt% mickel that excepted SK wire which had about 12 wt% nickel.
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