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At the beginning of the 90's on the market of dental restoration materials appeared compomers, polyacid modified composite resins (PMC). The term compomer suggests a combination of glass-ionomer and composite technology. This has led to confusion about how it relates to dental structures. The properties and adhesion of compomers to dental structures suggest a closer connection with composites than with glass ionomers. They do not have direct chemical adhesion to any tooth structure it adheres similar to the composites through a separate binding agent. However, their proximity to composites does not make them substitutes of composites. Compomers are a versatile class of dental restorative biomaterials, whose clinical benefits are particularly useful in pediatric dentistry. [ABSTRACT FROM AUTHOR]

The morphostructural features of temporary teeth cause certain clinical and therapeutic implications. To avoid opening of the pulp chamber during tooth preparation, conservative restorations are required, adapted to the size and colour of the temporary teeth. Dental developmental anomalies (DOA) may occur during the stages of tooth development, due to several disturbing factors. They m ay also result from the action of either genetic or environmental factors (e.g. metabolic, chemical, physical factors) or from the combined action of both categories in any of the odontogenesis stages (1-3). Depending on the possible result of the action of the etiological factors during different stages of dental development, DDAs are classified into: anomalies in number, size, shape, structure and colour. Medical history and clinical examination are the first methods of investigation required in the detection of DOA. Fallowing the assumption or the clinical finding of a possible anomaly, further examinations are recommended. [ABSTRACT FROM AUTHOR]