Objectives:
The aim of this study was to evaluate how microshear bond strength of different
adhesive resin cements are affected by dentin desensitizers application and
preparation depth.
Materials and Methods: One hundred and forty-four maxillary incisors were randomly divided into
two groups according to dentin preparation depth (0.8 and 1 mm) and each group subdivided
into four dentin desensitizers, Nd:YAG (Neodymium-doped Yttrium aluminum Garnet)
laser and control groups. The dentin desensitizers used were Gluma [Glutaraldehyde/
Hydroxyethyl methacrylate (HEMA)], BisBlock (Oxalate) Vivasens-Potassium
Fluoride (KF) and Admira Protect (Ormocer/HEMA), respectively. Three dual cure resin based luting cement
(RelyX ARC; Variolink II and Maxcem Elite) were used to create a 0,7 mm
diameter and 1 mm height cylindirical shape buid-up in tygon tubes (n=10). Micro-shear
bond strength (µSBS) test was performed at a crosshead of speed of 0.5 mm/min
using a Universal testing device. Then tooth surface was investigated by
steromicroscope and scanning electron microscopy (SEM). Data were analyzed using
Kruskal-Wallis, Mann-Whitney U and Chi-Square (X2) tests. (p = 0.05)
Results: There
was no statistically difference between the groups at 0.8 mm preparation depth.
At 1 mm preparation dept RelyX ARC + Gluma groups’ mean bond strength value (23.96
± 6.66 MPa) was found statistically lower according to the other groups (p<0.05). RelyX ARC + Laser groups’
mean bond strength value (37.33 ± 7.39 MPa) was found statistically higher
according to the other groups (p<0.05).
Conclusions:
The use of desensitizing agents affected the bond strength of the resin cements
to superficial dentin. Gluma desensitizer affected negatively µSBS of RelyX ARC
resin cement at 1 mm depth. Application of Nd:YAG laser to superficial dentin
showed positive effects to the dentin surface and bond strength. Other
desensitizing agents showed no significant effects on the resin bond strength (p>0.05).
Dentin sensitivity dentin desensitizing agents resin cements shear strength
Birincil Dil | İngilizce |
---|---|
Konular | Sağlık Kurumları Yönetimi |
Bölüm | Original Research Articles |
Yazarlar | |
Yayımlanma Tarihi | 31 Mayıs 2019 |
Gönderilme Tarihi | 11 Mart 2019 |
Yayımlandığı Sayı | Yıl 2019 |
Cumhuriyet Dental Journal (Cumhuriyet Dent J, CDJ) is the official publication of Cumhuriyet University Faculty of Dentistry. CDJ is an international journal dedicated to the latest advancement of dentistry. The aim of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of dentistry. First issue of the Journal of Cumhuriyet University Faculty of Dentistry was published in 1998. In 2010, journal's name was changed as Cumhuriyet Dental Journal. Journal’s publication language is English.
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