IADR Abstract Archives
Initial Hydrophilicity of Light Body Impression Materials
Objectives:
Initial water contact angles of a newly developed experimental super-quick setting Polyether Light Body Impression material were compared with a conventional Polyether material and VPS Light Body materials in the unset stage.
Methods:
For this study an experimental super-quick setting Polyether Light Body material (3M, # VT-PENG-ABF-G-0008, EXP) was compared to Polyether Light Body material Impregum Garant L Duosoft (3M, #3174520, IMP) and VPS Light Body materials Honigum Pro Light fast (DMG, #759878, HPL), Panasil Initial Contact Light (Kettenbach, #160661, PIC), Exafast NDS Injection Type (GC, #1606161, ENI), Aquasil Ultra LV fast Set (Dentsply, #150316, AUL) and Aquasil Ultra Plus LV Fast Set (Dentsply, #150923, AUP). For each material, initial contact angles were measured (n=5) using deionized water with a drop size of 5µl using a Kruess DSA 30 drop shape analyzer. Unset pastes were placed on glass plates (76mmx26mmx1mm) with a layer thickness of 200µm. Two series of measurements were done 20sec and 45sec after mixing the pastes. Room conditions were 23°C and 50% rel. humidity.
Results: Mean values and standard deviations of initial water contact angels are shown in the table below. Data were analyzed by one-way-Anova and Tukey Test (p<0.05). Within each column means that do not share a letter are significantly different.
Conclusions: IMP and EXP show the lowest contact angles independent of the amount of working time used. Based on this study both Polyether materials show a significantly higher initial hydrophilicity than the tested VPS materials.
Initial water contact angles of a newly developed experimental super-quick setting Polyether Light Body Impression material were compared with a conventional Polyether material and VPS Light Body materials in the unset stage.
Methods:
For this study an experimental super-quick setting Polyether Light Body material (3M, # VT-PENG-ABF-G-0008, EXP) was compared to Polyether Light Body material Impregum Garant L Duosoft (3M, #3174520, IMP) and VPS Light Body materials Honigum Pro Light fast (DMG, #759878, HPL), Panasil Initial Contact Light (Kettenbach, #160661, PIC), Exafast NDS Injection Type (GC, #1606161, ENI), Aquasil Ultra LV fast Set (Dentsply, #150316, AUL) and Aquasil Ultra Plus LV Fast Set (Dentsply, #150923, AUP). For each material, initial contact angles were measured (n=5) using deionized water with a drop size of 5µl using a Kruess DSA 30 drop shape analyzer. Unset pastes were placed on glass plates (76mmx26mmx1mm) with a layer thickness of 200µm. Two series of measurements were done 20sec and 45sec after mixing the pastes. Room conditions were 23°C and 50% rel. humidity.
Results: Mean values and standard deviations of initial water contact angels are shown in the table below. Data were analyzed by one-way-Anova and Tukey Test (p<0.05). Within each column means that do not share a letter are significantly different.
Conclusions: IMP and EXP show the lowest contact angles independent of the amount of working time used. Based on this study both Polyether materials show a significantly higher initial hydrophilicity than the tested VPS materials.