Thesis & Dissertations

Objective: To compare the clinical and radiographic performance of glass ionomer ZRGIs (ChemFil™ Rock, Dentsply, USA) versus resin composite (Z350, 3M ESPE, USA) restoration in class II cavities in primary molars. Material and methods: In a total of 12 patients aged 4-8 years old, forty class II restorations were placed. Patients had to have one or more pair of contralateral or bilateral teeth requiring class II restorations. The two materials were randomly placed in a split mouth design, in the first group, 20 primary teeth were restored by ZRGIs (ChemFil™ Rock, Dentsply, USA), and in the second group, 20 primary teeth were restored by resin composite (Z350, 3M ESPE, USA). The restorations were evaluated using FDI clinical criteria after 3, 6, 9 and 12 months. Data were subjected to statistical analysis using the Mann Whitney test. Results: The result did not reflect any significant differences at the first 6-month evaluation. However, there was a significant difference at 9 and 12-month evaluation regarding; anatomic form, fracture of material and retention, marginal adaptation, wear, proximal anatomical form, contact point, proximal contour, radiographic examination, recurrence of caries and periodontal response. Conclusion: Resin composite showed better clinical performance than ChemFil™ Rock at one year follow up. Keywords: Primary Teeth, Class II, Glass Ionomer, Resin Composite.