Restorative
Jacob Ozuna, DMD (he/him/his)
Pediatric Dental Resident
University of Nevada, Las Vegas, NV
University of Nevada, Las Vegas
Henderson, Nevada, United States
William Buhler, DDS
UNLV
Las Vegas, Nevada, United States
Neamat Hassan, n/a
University of Nevada, Las Vegas
Las Vegas, Nevada, United States
Purpose: To evaluate the color stability of different restorative modalities for masking silver diamine fluoride (SDF) after thermal aging.
Methods: 108 recently extracted carious permanent teeth were used. The teeth had caries to the dentin and no restoration. All samples were divided into six groups after been treated with SDF. Three groups were treated with potassium iodide (KI) before restoration. The groups were: Group A (SDF, KI and packable composite resin), Group B (SDF, flowable, and packable composite resin), Group C (SDF, KI, resin-modified glass Ionomer (RMGI), and packable composite resin), Group D (SDF, KI, and RMGI), Group E (SDF, glass ionomer (GI), packable composite resin), and Group F (SDF and RMGI). The samples were subjected to artificial aging using a thermocycling machine dwelling for 10000 cycles (one clinical year) at 5 °C and 55°C. After preparation, all samples were kept in artificial saliva at room temperature. VITA EasyShade device was used to determine color parameters to calculate the delta (ΔE). Color parameters were recorded initially and after 1, 3, and 5 clinical years.
Results: All groups showed a significant color change during the first clinical year. Groups restored with RMGI demonstrated the most significant color changes after thermal aging. The three groups that showed the most remarkable color stability after five clinical years were groups A, B, and E, with Δ E values of 7.02, 8.01, and 6.31, respectively.
Conclusions: KI is effective at reducing SDF staining, flowable and packable composite resins provided a long-term color-stable restoration.