Evidence Based Summaries in Dentistry - Volume 1, Issue 4, 2014
Volume 1, Issue 4, 2014
Source: Evidence Based Summaries in Dentistry 1, pp 1 –3 (2014)More Less
Most carious lesions and cavities develop in pits and fissures of occlusal surfaces in primary and permanent posterior teeth. The simultaneous interaction of a susceptible host, cariogenic microflora and suitable substrate (i.e. fermentable carbohydrates from food in the oral environment) has been established as the etiological factor. Exclusion of the cariogenic microflora from substrate may prevent carious lesion and cavity development and is achieved by placing a physical barrier in the form of a seal on pits and fissures.
Source: Evidence Based Summaries in Dentistry 1, pp 4 –6 (2014)More Less
Sealing pits and fissures of teeth is an effective caries-preventive intervention. It has been shown that up to 71% of occlusal decay is preventable after a single sealant application in a fissure. Evidence regarding the efficacy and cost-effectiveness of sealants in reduction of occlusal carious lesions in molar teeth has been highlighted. Today the most commonly used sealant materials are resin- or GIC-based. Resin-based materials seal pits and fissures through micro-retention, created through tags after enamel acid etching. Glass-ionomer cements (GIC) were introduced as alternative materials for sealing pits and fissures. In contrast to resin-based materials, GICs do not rely on micro-retention through tags after enamel acid etching, but on comparatively weaker chemical adhesion through ion exchange. In contrast to resin and GIC-based sealants, only a few reports of clinical trials covering other types of sealant materials, such as compomers or ormocers, are available.
Author S. MickenautschSource: Evidence Based Summaries in Dentistry 1, pp 7 –9 (2014)More Less
The process of comparison has been defined as an estimate of the similarities/dissimilarities between two things or people. In health sciences, the outcome of comparisons concerning the effectiveness of clinical interventions relies on the inference that any observed higher treatment effect of one intervention above another is indeed attributable to the characteristics of such treatment. Therefore, conditions of comparisons should assure an even distribution of all factors among the compared intervention groups, with the exception of the differences in intervention that are related to the outcome of interest. Such even distribution of confounding factors can be achieved by random subject allocation to intervention groups.
Uncontrolled longitudinal studies give misleading results regarding glass-ionomer restoration efficacySource: Evidence Based Summaries in Dentistry 1, pp 10 –12 (2014)More Less
The term 'high-viscosity' or 'high-viscous glass-ionomer cement' (HVGIC) has emerged within the scientific dental literature: a simple search conducted in PubMed/Medline (25.09.2012) with the string of search terms: "high-viscosity glass ionomer cement" OR "high-viscous glass ionomer cement" revealed 16 citations of articles, published between 2003 - 2011, of which five articles referred to the term in their titles and all articles in their listed abstracts and related it specifically to the products Fuji IX (GC Corporation, Japan) or Ketac Molar (3M ESPE, Germany).