J Korean Orthop Assoc.  2008 Dec;43(6):746-751.

Bonding Strength between Cement and an Implant according to the Cementing Time

• Cho WS
• Kim BK
• Woo JH
• Youm YS
• Byeon HK

Abstract

PURPOSE: The objective of this study was to compare the bonding strength between cement and an implant according to the cementing time.
MATERIALS AND METHODS
The two types of cement used were CMW(R) 1 and 3 (Depuy Ltd., Blackpool, UK). Plastic molds containing CMW(R) 1 were pressed onto metal blocks at 2, 4, 5 or 6 minutes after mixing the cement, while molds containing CMW(R) 3 were pressed onto blocks at 3, 5, 6 or 7 minutes after mixing the cement. Tensile strength was tested with using an Instron Model 8874 (Instron Corp., Canton, MA, USA). Tensile strengths were compared using the Kruskal-Wallis test and the Mann-Whitney U test.
RESULTS
The strongest bonding strengths for the tensile load were at 2 minutes post-mixing for CMW(R) 1, and at 3 minutes post-mixing for CMW(R) 3. The strength rapidly decreased after 5 minutes for CMW(R) 1 and after 6 minutes for CMW(R) 3.
CONCLUSION
This study suggests that the risk of loosening between cement and an implant is likely to be minimized by the surgical technique that considers the bonding strength according to time.

Keyword

Bonding strength; Bone cement; Loosening; Arthroplasty

MeSH Terms

Arthroplasty
Fungi
Plastics
Tensile Strength
Plastics