T he technique of cementing orthodontic bands to teeth was first introduced by Magil I in 1871 and remained the treatment of choice for more than 85 years. Direct bonding has replaced anterior teeth banding and offers significant advantages such as improved esthetics, ease of placement, patient comfort, decreased soft tissue irritation, enhanced ability to detect interproximal decay, and less d...

Current concepts in cement Total Hip Arthroplasty advocates optimization of mechanical interlock of cement (PMMA) with trabecular bone. The Third generation cementing technique has been developed to achieve this with the use of cement gun retrograde cementing within the proximal femur and pressurization of the cement with wedge or surgeon’s thumb. The forces generated by cement compression duri...

BACKGROUND There has been controversy whether methylmethacrylate precoating of the cemented femoral stem is a solution for aseptic loosening or rather contributes to increased failure rates in cemented total hip arthroplasties. METHODS On a retrospective basis, we analyzed 76 primary hybrid total hip arthroplasties from 63 patients with precoated, cemented femoral stems between October 1990 a...

-The simple replacement technique of cement by fly ash in concrete does not produce a concrete with desirable early strength which is a significant parameter of present day emphasis of speedier construction. Increasing the amount of flyash replacement slows down the strength development at early ages. For effective mix proportioning of fly ash concrete, cementing efficiency factor has to be tak...

OBJECTIVES To evaluate microleakage and marginal gaps in full cast crown restorations bonded with six different types of cementing agents. METHODS Sixty non-carious human premolars and molars were prepared in a standardized manner for full cast crown restorations. The mesial and distal margins were located in dentin, while the vestibular and palatal/lingual margins were located in enamel. Cro...

BACKGROUND AND PURPOSE A proximal stem centralizer may be beneficial regarding cementing pressures, cement penetration, and stem alignment. We measured these parameters when cementing a mat-surfaced femoral component with and without the use of a proximal stem centralizer. MATERIAL AND METHODS 8 femoral prostheses with proximal centralizers and 8 femoral prostheses without proximal centralize...

BACKGROUND AND PURPOSE The Charnley Elite-Plus stem was introduced in 1993 as a presumed improvement of the flanged Charnley stem. We started this study in 1996 to investigate the migratory pattern of the Elite-Plus stem. PATIENTS AND METHODS We followed 114 patients with osteoarthritis and a primary total hip replacement with the Elite-Plus stem. Mean age at the time of operation was 64 (50-...