Push-out Bond Strength of Two Types of Dental Post Luted with Two Types of Cement at Two Different Root Levels

Acta Stomatologica Croatica

Nurul Shafiqah Salim¹  Zaihan Ariffin¹  Yanti Johari¹  Mohammed Nasser Alhajj¹  Mohamad Syahrizal¹  Nor Aidaniza Abdul-Muttlib¹ 

[1] Prosthodontics Unit, Schoolof Dental Sciences, Health Campus, University Sains Malaysia, Kelantan, Malaysia;

关键词: Dental Cements;    Dentin-Bonding Agents;    Bond Strength;   

DOI  :  

来源: DOAJ

【 摘 要 】

Objective:Endodontically treated teeth may require posts for retaining the core and replacing the coronal structures thathavebeenlost. The of this study was to evaluate and compare the push-out bond strength between different types of post cemented with different types of luting ce-ment at different types of root level. Material and Methods:In this in-vitro study, a total of 48 single-rooted permanent human teeth were decoronated, and the roots were treated endodontically. Fol-lowing post space preparation, the sample was divided into four groups (n= 12 each) based on the types of post andcement. Two differenttypes ofpost [GC everStick ® POST(ES) and Parapost ® Fiber Lux TM (PF)],and two different types of cement [G-CEM TM (G), andRelyX TM (R)]wereusedaccording to the manufacturer’s instructions. All roots were sectioned at the coronal and middle thirds with a thickness of 3±0.1mm.The Push-out bond strength (PBS) test was performed using a universal testing machineat a cross-head speed of 0.5mm/ min.The bondstrength values were recorded, and the data were analyzed using the SPSS program. Apart from descriptive statistics, three- ANOVA was used for the interaction of the independent variables (post, cement, and root level). For differences between the groups, the Mann-Whitney Utest was used. A P-value ofless than 0.05 was considered significant forall analyses. Results: Push-out bond strength of samples at the middlelevel (11.38±10.31 MPa), with PF posts (11.18±9.98 MPa) and of thoselutedwith RelyX TM Unicem cement (13.26±8.73MPa)was higher thanthat of their counterparts. The PBS means of RelyX TM Unicem cement at both root levels were much higher than PBS means of G-CEM TM cement. Three-way ANOVA test revealed a significant effect for each variable with a highereffect of cement(Sum of Squares= 1310.690;P< 0.001). No significant difference (P= 0.153) was found between thecoronal and middle parts and betweenES and PFposts (P= 0.058). However, a highly significant difference (P<0.001) was found betweenRelyX TM Unicem and G-CEM TM cements. Conclusion: The type of cement had a significant effect on push-outbondstrength with RelyX TMUnicem which had higher values than G-CEM TM. However, thetype of post and rootlevelhad no significant effect onPBS,although Parapost®Fiber Lux TM and middle root level had higher values than their counterparts.

【 授权许可】

Unknown