These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.
Pubmed for Handhelds
PUBMED FOR HANDHELDS
Search MEDLINE/PubMed
Title: Retention of posts with resin, glass ionomer and hybrid cements. Author: Love RM, Purton DG. Journal: J Dent; 1998 Sep; 26(7):599-602. PubMed ID: 9754749. Abstract: OBJECTIVES: To measure and compare the retention of serrated root canal posts cemented with glass ionomer, resin and resin-modified glass ionomer (hybrid) cements. METHODS: Fifty single-rooted human teeth were decoronated, treated endodontically and then embedded in resin blocks. Standard post-holes, 10 mm long, were prepared to receive 1.5 mm serrated stainless steel posts. Five equal-sized groups of roots had posts cemented using either a glass ionomer cement, one of two resin cements or one of two resin-modified glass ionomer luting cements. The cements were prepared and used according to the manufacturers' instructions. The tensile force required to dislodge the cemented posts in a testing machine was recorded. Statistical analysis was performed using Student's t-test and Mann-Whitney U-tests at the 99.9% confidence level. RESULTS: Statistical analysis revealed that posts cemented with resin A were significantly better retained (340.06 N+/-23.13 N) than those cemented with resin B (212.56 N+/-67.62 N), or either of the two resin-modified glass ionomer cements (53.90 N+/-28.42 N, 25.97 N+/-14.70 N), but not statistically better than posts cemented with the glass ionomer cement (286.16 N+/-38.71 N). The retention of posts cemented with either resin B or the glass ionomer cement was significantly better than with either hybrid cement. There was no significant difference in retention between the hybrid cements. CONCLUSION: The performance of the resin-modified glass ionomer cements was significantly below that of alternative cements in this study. Possible explanations for this finding are discussed. Dentists should be cautious in adopting this new cementing regime.[Abstract] [Full Text] [Related] [New Search]