Ocena in vitro właściwości materiałowych Biodentine w porównaniu z ProRoot MTA
Solubility is an important factor in assessing the suitability of materials to be used as restorative materials in dentistry. Lack of solubility is a desired characteristic for root repair cements [15] because endodontic and restorative materials should provide a long-term seal and avoid leakage from the oral cavity and/or the periapical tissue. Consequently, a low solubility in distilled water as proposed in the Standard of the International Standard Organisation (ISO) 6876:2001 [16] is required. From other studies it is known that calcium silicate cements have the ability to form hydroxyapatite crystals on their surface after contact with phosphate containing body fluid [17-19]. But until now, it is unclear in how far these crystals formations may have an influence on the solubility. Thus, the solubility testing was performed in distilled water as well as in phosphate containing Phosphate Buffered Saline (PBS) buffer.
Vickers microhardness (HV) can be defined as the resistance to plastic deformation of the surface of a material after indentation or penetration. The reported microhardness values for sound dentine are in the range of 60–90 HV [20-22]. It would be optimal if the surface hardness of a calcium silicate cement could reach the same range as dentine.
Root-end filling and endodontic repair materials must be radiopaque in order to be able to evaluate the quality of the filling. It is known that the radiopacity of a 1 mm thick dentine layer is equivalent to [...]
którzy są subskrybentami naszego portalu.
i ciesz się dostępem do bazy merytorycznej wiedzy!
