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DOI :10.26650/eor.2018.442   IUP :10.26650/eor.2018.442    Full Text (PDF)

Fracture resistance of root-filled teeth after cavity preparation with conventional burs, Er: YAG and Er,Cr: YSGG lasers

Uğur Aydın, Fatih Aksoy, Samet Tosun

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. 
Keywords: Bur; cavity preparation; Er, Cr:YSGG; Er:YAG; fracture resistance

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APA

Aydın, U., Aksoy, F., & Tosun, S. (2018). Fracture resistance of root-filled teeth after cavity preparation with conventional burs, Er: YAG and Er,Cr: YSGG lasers. European Oral Research, 52(2), 59-63. https://doi.org/10.26650/eor.2018.442


AMA

Aydın U, Aksoy F, Tosun S. Fracture resistance of root-filled teeth after cavity preparation with conventional burs, Er: YAG and Er,Cr: YSGG lasers. European Oral Research. 2018;52(2):59-63. https://doi.org/10.26650/eor.2018.442


ABNT

Aydın, U.; Aksoy, F.; Tosun, S. Fracture resistance of root-filled teeth after cavity preparation with conventional burs, Er: YAG and Er,Cr: YSGG lasers. European Oral Research, [Publisher Location], v. 52, n. 2, p. 59-63, 2018.


Chicago: Author-Date Style

Aydın, Uğur, and Fatih Aksoy and Samet Tosun. 2018. “Fracture resistance of root-filled teeth after cavity preparation with conventional burs, Er: YAG and Er,Cr: YSGG lasers.” European Oral Research 52, no. 2: 59-63. https://doi.org/10.26650/eor.2018.442


Chicago: Humanities Style

Aydın, Uğur, and Fatih Aksoy and Samet Tosun. “Fracture resistance of root-filled teeth after cavity preparation with conventional burs, Er: YAG and Er,Cr: YSGG lasers.” European Oral Research 52, no. 2 (Aug. 2025): 59-63. https://doi.org/10.26650/eor.2018.442


Harvard: Australian Style

Aydın, U & Aksoy, F & Tosun, S 2018, 'Fracture resistance of root-filled teeth after cavity preparation with conventional burs, Er: YAG and Er,Cr: YSGG lasers', European Oral Research, vol. 52, no. 2, pp. 59-63, viewed 14 Aug. 2025, https://doi.org/10.26650/eor.2018.442


Harvard: Author-Date Style

Aydın, U. and Aksoy, F. and Tosun, S. (2018) ‘Fracture resistance of root-filled teeth after cavity preparation with conventional burs, Er: YAG and Er,Cr: YSGG lasers’, European Oral Research, 52(2), pp. 59-63. https://doi.org/10.26650/eor.2018.442 (14 Aug. 2025).


MLA

Aydın, Uğur, and Fatih Aksoy and Samet Tosun. “Fracture resistance of root-filled teeth after cavity preparation with conventional burs, Er: YAG and Er,Cr: YSGG lasers.” European Oral Research, vol. 52, no. 2, 2018, pp. 59-63. [Database Container], https://doi.org/10.26650/eor.2018.442


Vancouver

Aydın U, Aksoy F, Tosun S. Fracture resistance of root-filled teeth after cavity preparation with conventional burs, Er: YAG and Er,Cr: YSGG lasers. European Oral Research [Internet]. 14 Aug. 2025 [cited 14 Aug. 2025];52(2):59-63. Available from: https://doi.org/10.26650/eor.2018.442 doi: 10.26650/eor.2018.442


ISNAD

Aydın, Uğur - Aksoy, Fatih - Tosun, Samet. “Fracture resistance of root-filled teeth after cavity preparation with conventional burs, Er: YAG and Er,Cr: YSGG lasers”. European Oral Research 52/2 (Aug. 2025): 59-63. https://doi.org/10.26650/eor.2018.442



TIMELINE


Submitted05.01.2017
Accepted21.02.2017
Published Online01.05.2018

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