Effect of type of cavity preparation (bur,Er:YAG laser) and restorative materials on prevention of caries lesion
| Autor: | Masumeh Hasani Tabatabaei, Sakineh Arami, Fatemeh Khajavi, Zohreh Moradi |
|---|---|
| Jazyk: | perština |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Journal of Dental Medicine, Vol 29, Iss 4, Pp 229-236 (2017) |
| Druh dokumentu: | article |
| ISSN: | 1024-641X 2008-2444 |
| Popis: | Background and Aims: Despite the reduction of incidence of dental caries in recent years, this disease is common and many efforts were conducted to decrease the prevalence of dental caries. On the other hand secondary caries lesions are the main reason for replacement of direct restorations. Therefore, the aim of the current study was to evaluate suitable methods of preparation and restorative materials to reduce caries recurrence. Materials and Methods: In this experimental study, eighty human teeth were collected and stored in normal saline. The teeth were soft-tissue debrided and cleaned with water/pumice slurry and rubber cups in a low-speed handpiece. Speciments were randomly divided in two main groups. Cavities were prepared with diamond burs or Er:YAG laser (10 Hz, 300 mJ, 3W). Each group was divided into 4 sub-groups, and restored with a glass-ionomer cement (Fuji IX), resin modified glass-ionomer (Fuji II LC), total etch bonding + composite resin or self-etch bonding + composite resin. The specimens were submitted to pH cycling. Speciments were then sectioned, polished and Vickers microhardness measurements were performed on each specimen. Differences among the medians were analyzed using two way ANOVA test at a 95% confidence level and Tukey test. Results: Statistical analysis showed significant difference in the type of substrate (enamel, dentin) in both main groups (P |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|