Bindi depigmentation.

While some clinicians accept that denture fixatives have a valuable function in certain situations and contribute significantly to denture retention and stability, others disapprove of their use, believing that there is no substitute for a properly constructed, accurately fitting denture. It is also believed that their inappropriate use can lead to problems such as impairment of the development of the neuromuscular system which is important for the retention and stability of dentures. However, because these fixatives are available over the counter, it is important that clinicians, whatever their opinion, can give patients informed advice. The aim of this paper, therefore, is to provide an update, advice and recommendations on the use of denture fixatives.

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PubMed1996

Shear bond strength of four dentinal adhesives applied in vivo and in vitro.

OBJECTIVES: The purpose of this study was to determine whether dentine bonding performed under clinical conditions is as reliable as laboratory bonding. METHODS: Freshly cut dentine was used in vivo or in vitro as a substrate for the bonding of various adhesive systems. Bond strength was measured in shear loading. RESULTS: Clearfil Liner Bond, Optibond and All Bond 2 showed better results when applied in vivo than in vitro. Scotchbond Multipurpose showed the opposite effect but the bond strength was, for both conditions, superior to the other three products. Only All Bond 2 presented statistically significant differences in bond strength between in vivo and in vitro applied bonding. CONCLUSIONS: The results indicate that, with the new hydrophilic dentine bonding systems, in vitro application does not lead to substantially different results when compared with, in vivo application.

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