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Pubmed for Handhelds

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  • Title: An in vitro assessment of cavity margin finishing and marginal adaptation of tunnel restorations.
    Author: Chalker SA, Lumley PJ.
    Journal: Eur J Prosthodont Restor Dent; 1993 Jun; 1(4):151-6. PubMed ID: 8268839.
    Abstract:
    Reasons for the failure of tunnel restorations include fracture of weak carious enamel at the cavity margins, poor adaptation of the restoration approximally, incomplete removal of caries and fracture of the marginal ridge. Four methods of cavity margin finishing were investigated. A round steel bur in a slow handpiece was found to give the best finish. Four materials were used for the restoration of tunnel cavities. In this study posterior resin composite gave the best marginal adaptation; however, a glass ionomer (polyalkenoate) may be preferable as it is impossible to guarantee removal of all carious tooth tissue from these preparations and glass ionomers have the benefit of fluoride release.
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