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- 長田 知子
- 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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- Reinforcement for Overdentures on Abutment Teeth
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Purpose: This study investigated the effect of the position of reinforcement wires, differences in artificial teeth, and framework designs on the breaking strength of overdentures.<BR>Methods: The basal surfaces of composite resin teeth and acrylic resin teeth were removed using a carbide bur. A reinforcement wire or a wrought palatal bar was embedded near the occlusal surface or basal surface. Four types of framework structures were designed: conventional skeleton (skeleton), housing with skeleton (housing), housing plus short metal backing (metal backing), and housing plus long metal backing (double structure). After the wires, bars, and frameworks were sand-blasted with 50μm Al203 powder, they were primed with a metal primer and embedded in a heat-polymerized denture base resin. The breaking strengths (N) and maximum stiffness (N/mm) of two-week aged (37deg;C) specimens were measured using a bending test (n=8). All data obtained at a crosshead speed of 2.0mm/min were analyzed by ANOVA/Tukey's test (α=0.01).<BR>Results: There were no statistical differences between the two kinds of artificial teeth (p>0.01). The wrought palatal bar had significantly higher strength than the reinforcement wire (p<0.01). Greater strengths were found for specimens with frameworks than those without frameworks (p<0.01). The breaking strength of the wrought palatal bar embedded near the occlusal surface was higher than that on the basal surface (p>0.01). The breaking strength and maximum stiffness of the double structure framework were significantly greater (p<0.01) than those of the conventional frameworks.<BR>Conclusion: The breaking strengths of overdentures were influenced by the size and position of the reinforcement wires. Double structure frameworks are recommended for overdentures to promote a longterm prognosis without denture breakage.
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 50 (2), 191-199, 2006
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
- 1390282679388370560
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- NII論文ID
- 10017492474
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- NII書誌ID
- AN00197911
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- ISSN
- 1883177X
- 03895386
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- PubMed
- 16790958
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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