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| Clinical Evaluation Of Viscous Gic-Restorations In Class I And II Cavities After 6 And 12 Months |
| K. Salzmann*, A. Mehl, R. Hickel |
| (Dep. Of Operative Dentistry; LMU Munich, Germany) |
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Within the class of Glass-Ionomer-Cements (GIC) a new subgroup has been developed: highly viscous GIC. These materials are almost condensable like amalgam, are tooth-colored, release fluoride and have a lower ablation rate than conventional GIC.
The objective of this study was to investigate the clinical behavior and longevity of this new type of GIC for restorations in posterior teeth.
50 class I and II cavities of various extension were filled with highly viscous GIC (Ionofil Molar Capsule, VOCO, Germany). The fillings were evaluated using the USPHS criteria directly after placement, 6 months and 12 months later. Statistical differences were evaluated by Mann-Whitney-U-test (p = 0.05, SPSS 8.0). The results show, that concerning the criteria listed below no statistical differences after 6 months could be observed. Statistical differences could only be evaluated for marginal integrity and integrity of the restoration after 12 months. In 66 % of the cases the fillings had a slightly different color shading according to the opacity of GIC. Two occlusal fillings in one patient showed cracking after 12 months, and therefore had to be replaced. The table summerizes the percentual proportion of some criteria directly after placement (BL), after 6 months (6M) and 12 months (12M).
| Criteria |
Alfa (%) |
Bravo (%) |
Charlie (%) |
Delta (%) |
| Time period |
BL |
6M |
12M |
BL |
6M |
12M |
BL |
6M |
12M |
BL |
6M |
12M |
| Surface structure |
0 |
0 |
0 |
100 |
100 |
100 |
0 |
0 |
0 |
0 |
0 |
0 |
| Marginal integrity |
100 |
100 |
96 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
4 |
| Integrity of restoration |
100 |
100 |
96 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
4 |
| Color match |
34 |
34 |
34 |
66 |
66 |
66 |
0 |
0 |
0 |
0 |
0 |
0 |
| Postoperative symptoms |
100 |
100 |
100 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Although our criteria of observation were very strict, 100% of the fillings showed acceptable or excellent results over a time period of 6 months and 96% over a time period of 12 months. Further investigations are planned at 3 and 5 years after placement.
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