earticle

영어

Purpose: To evaluate positional changes of artificial teeth in complete dentures reinforced with glass fiber mesh using three-dimensional analysis. Methods: An edentulous model was selected as the master model. Ten study models were fabricated with Type IV dental stone. Fifteen wax trial dentures were prepared and divided into three groups (five each) as follows: conventional complete denture (CD group) and glass fiber mesh–reinforced complete dentures (GI and GII groups). The artificial teeth of the wax trial dentures were scanned using a model scanner. After polymerization, the conventional and reinforced complete dentures were re-scanned. The datasets of the wax trial dentures and complete dentures were superimposed using three-dimensional analysis software, and tooth movement was evaluated using a color difference map. Root mean square (RMS) values were statistically analyzed using one-way analysis of variance, followed by Duncan’s post-hoc test (α=0.05). Results: The mean RMS values of the GI and GII groups were smaller than those of the CD group, with GII showing the smallest mean and the CD group the largest mean values. Standard deviations were also reduced in the GI and GII groups. Statistically significant differences were observed among the three groups (p<0.05). Conclusion: Complete dentures reinforced with glass fiber mesh (GI and GII groups) demonstrated greater positional stability than conventional complete dentures (CD group). These findings indicate that the application of reinforcing materials to denture bases can enhance the dimensional stability of complete dentures.