Purpose
The aim of the present study is to compare the fracture resistance of teeth after
access cavity preparation with conventional rotary burs, Erbium-doped yttrium
aluminum garnet laser (Er:YAG) and Erbium, cromium: yttrium scandium gallium
garnet laser (Er,Cr:YSGG) lasers.
Materials and methods
Fifty five intact mandibular molars were divided into 3 negative groups (groups 1, 2,
3; n=5 for each), 3 study groups (groups 4, 5, 6; n=10 for each) and 1 positive control
group (intact teeth; n=10). Access cavities of groups 1, 2 and 3 were prepared with
conventional burs, Er:YAG laser and Er,Cr:YSGG laser respectively. After root canal
obturation, their coronal portions were left non-restored. Access cavities of groups 4,
5 and 6 were prepared by using the same equipment but their coronal portions were
restored with composite resinafter root canal obturation. Following thermocycling,
fracture strength was evaluated with a Universal Testing Machine. Mean force at which
each sample is fractured was recorded in Newton unit and statistically analyzed.
Results
Fracture resistance of group 7 (intact teeth) was significantly higher than all other
groups (p<0.001). Differences among the fracture resistance values of groups 4, 5 and 6
were not significantly different but they were significantly higher than those of groups
1, 2 and 3 (p<0.001). No significant difference was found between Groups 1, 2 and 3.
Conclusion
Preparing access cavities with either laser or bur has no effect on the fracture
resistance of teeth with root canal treatment.
Bur cavity preparation Er Cr:YSGG Er:YAG fracture resistance
Birincil Dil | İngilizce |
---|---|
Konular | Sağlık Kurumları Yönetimi |
Bölüm | Araştırmalar |
Yazarlar | |
Yayımlanma Tarihi | 1 Mayıs 2018 |
Gönderilme Tarihi | 5 Ocak 2017 |
Yayımlandığı Sayı | Yıl 2018 Cilt: 52 Sayı: 2 |