Sekhar Anand, Anil Akansha, Thomas Manuel S, Ginjupalli Kishore
Post graduate student, Dept. of Oral and Maxillofacial Surgery, Yenepoya Dental College, Yenepoya University, Deralakatte, Mangalore, Karnataka. Former student of Manipal College of Dental Sciences, Manipal University, Mangalore, Karnataka.
Post graduate student, Dept. of Periodontics, College of Dental sciences, Davangere, Karnataka. Former student of Manipal College of Dental Sciences, Manipal University, Mangalore, Karnataka.
J Clin Exp Dent. 2017 Jul 1;9(7):e837-e841. doi: 10.4317/jced.53725. eCollection 2017 Jul.
Disinfection of dentin surface prior to any restorative therapy is important for the longevity of the treatment rendered. However, these dentin disinfection methods should itself not interfere with the adhesion of the restorative material. Therefore the aim of this study was to determine the effect of various dentin disinfection protocols on the shear bond strength (SBS) of resin modified glass ionomer cement (RMGIC).
The occlusal surface of 40 extracted premolars were trimmed to obtain a flat dentinal surface and was randomly divided into four groups. CTRL was the control group; NaOCl was 1% sodium hypochlorite disinfection group; CHX was 2% chlorhexidine disinfection group; and PAD was the photo-activated disinfection group. Then a predetermined dimension of RMGIC was bonded to the pre-treated dentin surfaces. Following this, each sample was tested for SBS using universal testing machine at a crosshead speed of 0.5mm/min.
Among the test groups, CHX showed the least reduction in SBS and NaOCl the highest reduction in SBS as compared to the control group. PAD on the other hand showed significantly lower SBS than CTRL and CHX groups, but the values were higher than the NaOCl group.
Thus, it could be concluded from the present study that use of chlorhexidine based dentin disinfection does interfere with the adhesion of RMGIC. However, photo-activated disinfection should be done with caution. Moreover, sodium hypochlorite based disinfectants should be avoided prior to the use of RMGIC. Chlorhexidine, Dentin disinfection, Photo-activated disinfection, Resin modified glass ionomer cement, Shear bond strength, Sodium hypochlorite.
在进行任何修复治疗之前，牙本质表面的消毒对于所实施治疗的持久性至关重要。然而，这些牙本质消毒方法本身不应干扰修复材料的黏附。因此，本研究的目的是确定各种牙本质消毒方案对树脂改性玻璃离子水门汀（RMGIC）剪切粘结强度（SBS）的影响。
将40颗拔除的前磨牙的咬合面修整以获得平坦的牙本质表面，并随机分为四组。CTRL为对照组；NaOCl为1%次氯酸钠消毒组；CHX为2%氯己定消毒组；PAD为光活化消毒组。然后将预定尺寸的RMGIC粘结到预处理的牙本质表面。在此之后，使用万能试验机以0.5mm/min的十字头速度对每个样本进行SBS测试。
在测试组中，与对照组相比，CHX组的SBS降低最少，NaOCl组的SBS降低最多。另一方面，PAD组的SBS明显低于CTRL组和CHX组，但数值高于NaOCl组。
因此，从本研究可以得出结论，使用基于氯己定的牙本质消毒确实会干扰RMGIC的黏附。然而，光活化消毒应谨慎进行。此外，在使用RMGIC之前应避免使用基于次氯酸钠的消毒剂。氯己定、牙本质消毒、光活化消毒、树脂改性玻璃离子水门汀、剪切粘结强度、次氯酸钠。
