Effects of Er:YAG laser pre-treatment on dentin structure and bonding strength of primary teeth: An in vitro study
| العنوان: | Effects of Er:YAG laser pre-treatment on dentin structure and bonding strength of primary teeth: An in vitro study |
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| المؤلفون: | Junhui Wang, Zhi fei Zhou, Zi rui Wang, Kuan Yang, Xin Ge, Yu jiang Chen, Lu lu Wang, Bai ze Zhang, Xiaojing Wang |
| المصدر: | BMC Oral Health, Vol 20, Iss 1, Pp 1-10 (2020) BMC Oral Health |
| بيانات النشر: | Research Square Platform LLC, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Molar, Dentin tablets, genetic structures, Scanning electron microscope, Smear layer, Dental Cements, Lasers, Solid-State, 030207 dermatology & venereal diseases, 03 medical and health sciences, 0302 clinical medicine, stomatognathic system, Shear strength, Dentin, medicine, Humans, Tooth, Deciduous, Composite material, General Dentistry, Dentin tubules, Universal testing machine, business.industry, Shear bond strength, Dental Bonding, Peritubular dentin, 030206 dentistry, Resin Cements, Primary teeth, lcsh:RK1-715, medicine.anatomical_structure, Dentinal Tubule, lcsh:Dentistry, Microscopy, Electron, Scanning, Shear Strength, business, Er:YAG laser, Research Article |
| الوصف: | Background To investigate the effects of Er:YAG laser pre-treatment on the dentin structure and shear bond strength of primary teeth. Methods Dentin specimens were prepared using freshly extracted intact primary molars and divided randomly into four groups based on the surface treatment applied. The control and etchant groups received no treatment and conventional acid etching treatment, respectively, while the energy and frequency groups received laser surface treatment with variable energy (50–300 mJ) and frequency (5–30 Hz) parameters. The morphology was observed using scanning electron microscopy. The surface-treated dentin slices were bonded to resin tablets, followed by thermocycle treatment. The shear strength was determined using a universal testing machine and de-bonded surfaces were observed using a stereomicroscope. Results SEM observation showed that the surface morphology of the dentin slices changed after etching as well as after Er:YAG laser pre-treatment with different energy and frequency values. The dentin tubules opened within a specific energy (50–200 mJ) and frequency (5–20 Hz) range. Beyond this range, the intertubular dentin showed cracks and structural disintegration. Shear strength tests showed no significant changes after acid etching. The shear strength increased significantly (P P > 0.05). The most common mode of interface failure was adhesive (interface) failure, followed by mixed and resin cohesive failure. Conclusions Pre-treatment using Er:YAG laser opens the dentinal tubules without the formation of a smear layer and improves the bonding strength between the primary teeth dentin and the resin composites. |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0bed6dca656ed4a2a6d9c9ddc48d2feTest https://doi.org/10.21203/rs.3.rs-35761/v2Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....d0bed6dca656ed4a2a6d9c9ddc48d2fe |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |