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題名 | 精密附連體可撤式局部義齒之替換--病例報告=Replacement of Precision Attachment Removable Partial Denture--Case Report |
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作者 | 王震乾; 洪昭民; 洪純正; 施岳文; Wang, Jen-chyan; Hong, Jau-min; Hong, Chung-jeng; Shih, Yueh-wen; |
期刊 | 中華牙醫學雜誌 |
出版日期 | 19990600 |
卷期 | 18:2 1999.06[民88.06] |
頁次 | 頁141-146 |
分類號 | 416.963 |
語文 | chi |
關鍵詞 | 局部義齒; 義齒設計; 義齒修復; Partial denture; Denture design; Denture repair; |
中文摘要 | 可撤式局部義齒所使用精密附連體的固位效果主要來自附連體凸處與凹處緊鄰面 間抵抗移動的磨擦,或藉著凸處的一部份進入凹處的倒凹區產生機械性的嵌合。由於�G復體 的取出與裝戴,都將造成附連體凹處與凸處的移動,以及無法避免的漸漸磨耗。此外,附連 體小組件重複地彎曲也可能造成金屬疲勞和斷折。�G復體本身也將因支持組織解剖形態的改 變,義齒的磨耗和支柱牙的喪失而需要修復。本文提出一個在現存固定�G復體上替換精密附 連體可撤式局部義齒的症例。除詳細描述利用冠內附連體凸處替換與製作精密附連體局部義 齒的步驟外,並且分析精密附連體可能失敗的原因和討論影響附連體持久性的各種因素。 |
英文摘要 | The retentive effect of precision attachments for removable partial dentures can be achieved either through frictional resistance to movement between closely approximated surfaces fo male and female components or by the mechanical engagement of undercut areas within the female recess by the male component. Progressive wear of the attachment surfaces is inevitable. This case report describes a female patient who experienced looseness of mandibular precision attachment removable partial denture due to functional wear between the male and female components. We duplicated existing crowns with precision attachment female recesses by silver-plating method for final cast fabrication, and replaced a removable partial denture with male components to fit these existing fixed prostheses. This replacement method allows the patient to regain acceptable function and esthetics without remaking both fixed prosthesis and precision attachment removable partial denture. The advantages and disadvantages of this method was described. The possible causes of failure and factors influencing the durability of precision attachments were also discussed. |
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