Bonding effects of different adhesive materials with no ferrule effect in the dental restoration with CAD/CAM-fabricated one-piece fiber post-and-core after bypass obturation of oval root canals / 中国组织工程研究
Chinese Journal of Tissue Engineering Research
;
(53): 2162-2167, 2018.
Article
in Chinese
| WPRIM
| ID: wpr-698676
ABSTRACT
BACKGROUND:
One-piece glass fiber post-and-core achieves a good sealing between cast-post and core and provides a suitable elastic modulus of the glass fiber material. Therefore, selecting a reasonable bonding system for the CAD/CAM-fabricated fiber post-and-core with no ferrule effect has become an important issue in clinical practice.OBJECTIVE:
To compare the bonding effects of three kinds of adhesive materials without ferrule effect in the CAD/CAM-fabricated dental restoration after bypass obturation of oval root canals.METHODS:
Ninety extracted first mandibular premolars with the working length set to 14 mm were randomized into three groups (n=30 per group). The root canal was prepared with the ProTaper next nickel titanium system under a dental operating microscope. The bypass obturation with oval root canals was achieved using the warm gutta-percha vertical condensation technique. 1-4 # Pesso drills were used to remove the gum in the root canal, with the preparatory depth of 9 mm, but with no shoulder collar. CAD/CAM technology was used to prepare one-piece fiber post-and-cores which were bonded using the KetacTM Cem Easymix glass ion, ONE-STEP PLUS universal UV-curable adhesive and RelyXTM Unicem 2 self-adhesive resin cement in different groups. The bonding effect of three kinds of adhesive materials was analyzed by using a universal mechanical measuring instrument. RESULTS ANDCONCLUSION:
Compared with the KetacTM Cem Easymix glass ion group, the debonding force and micro-tensile strength were significantly stronger in the other two groups (P<0.05), while compared with the ONE-STEP PLUS universal UV-curable adhesive group, the debonding force and micro-tensile strength were slightly higher in the RelyXTM Unicem 2 self-adhesive resin cement group, but there was no significant difference between the two groups. To conclude, RelyXTM Unicem 2 self-adhesive resin cement in the absence of ferrule effect can achieve better bonding effect on the CAD/CAM-fabricated one-piece fiber post-and-core after bypass obturation of oval root canals.
Full text:
Available
Index:
WPRIM (Western Pacific)
Type of study:
Controlled clinical trial
Language:
Chinese
Journal:
Chinese Journal of Tissue Engineering Research
Year:
2018
Type:
Article
Similar
MEDLINE
...
LILACS
LIS