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- 佐藤 洋平
- 鶴見大学歯学部歯科補綴学第一講座
書誌事項
- タイトル別名
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- Effect of Surface Modification Using Laser on Wear Resistance of Titanium
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Purpose: Severe wear of cast commercial pure (CP) titanium teeth was observed in a clinical survey. This study evaluated the wear resistance of cast CP titanium and titanium alloy teeth after the surface was modified using laser technology.<BR>Methods: Teeth patterns were duplicated from artificial first molars (Livdent FB 30, GC, Japan). All teeth specimens were cast with CP Ti grade 3 (T-Alloy H, GC) and Ti-6 Al-7 Nb (T-Alloy Tough, GC). After the occlusal surface was blasted with Al203, the occlusal contact points were modified using a laser (Neo laser L, Girrbach, Germany) at the following irradiation conditions (voltage: 260 V; pulse: 7 ms; focus: 1.5 mm). These parameters were determined by preliminary study. As a control, Type IV gold alloy (PGA-3, Ishifuku, Japan) was also cast conventionally. Both maxillary and mandibular teeth were worn using an in vitro two-body wear testing apparatus that simulated chewing function (60 strokes/min; grinding distance: 2 mm under flowing water). Wear resistance was assessed as volume loss (mm3) at 5 kgf (grinding force) after 50, 000 strokes. The results (n=5) were analyzed by ANOVA/Scheffé's test (α=0.05).<BR>Results: The gold alloy showed the best wear resistance of all the metals tested. Of all the titanium specimens tested, the modified surface indicated significantly greater wear resistance than did conventional titanium teeth without surface modification (p<0.05).<BR>Conclusions: Wear resistance was increased by modification of the surface using a laser. If severe wear of titanium teeth was observed clinically, little wear occurred when the occlusal facets were irradiated using a laser.
収録刊行物
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- 日本補綴歯科学会雑誌
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日本補綴歯科学会雑誌 49 (1), 46-55, 2005
社団法人 日本補綴歯科学会
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詳細情報 詳細情報について
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- CRID
- 1390001204410608256
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- NII論文ID
- 10014372002
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- NII書誌ID
- AN00197911
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- ISSN
- 1883177X
- 03895386
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- PubMed
- 15838151
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- PubMed
- CiNii Articles
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- 使用不可