Evaluation of dentinal tubule penetration after the use of dentin bonding agent as a root canal sealer.
BACKGROUND
The purpose of this study was to compare the effectiveness of Excite DSC (Ivoclar Vivadent, Schaan, Liechtenstein), a dentin bonding agent, with AH-26 (Dentsply, Detrey, Germany) as a root canal sealer by evaluating the penetration depth into the dentinal tubules and the tag density of the two compounds.


METHODS
Forty-two extracted, single-rooted premolars were prepared and randomly obturated with either Excite DSC (n = 20) or AH-26 (n = 20). Two teeth were filled without sealer and used as controls. Randomly, one half of the specimens in each group (n = 10) was sectioned 3 days after obturation (short-term), and the other half (n = 10) was sectioned after 3 months (long-term). The specimens were sectioned perpendicular to the long axis in two regions and prepared for observation using scanning electron microscopy.


RESULTS
In the short-term evaluation, the mean penetration depth of AH-26 in the apical sections (520.48 micromol/L) was significantly higher than that of Excite DSC (0.00 micromol/L). In the long-term evaluation, AH-26 exhibited a significantly greater depth of penetration in both the apical (797.74 micromol/L) and middle sections (1162.11 micromol/L) than Excite DSC (321.43 micromol/L and 657.72 micromol/L, respectively).


CONCLUSIONS
AH-26 showed more dentinal tubule penetration depth than Excite DSC in both evaluation periods.
Endodontic Department and Iranian Dental and Endodontic Research Center, Mashad University of Medical Sciences, Mashad, Iran.
Saeed
S
Moradi
Jamileh
J
Ghoddusi
Maryam
M
Forghani
D000134:Acid Etching, Dental; D001729:Bismuth / Q000737:chemistry / Q000627:therapeutic use; D001840:Dental Bonding; D003786:Dental Pulp Cavity / Q000648:ultrastructure*; D003804:Dentin / Q000648:ultrastructure*; D017220:Dentin-Bonding Agents / Q000737:chemistry / Q000627:therapeutic use*; D004338:Drug Combinations; D004492:Edetic Acid / Q000627:therapeutic use; D004853:Epoxy Resins / Q000737:chemistry / Q000627:therapeutic use; D006171:Gutta-Percha / Q000627:therapeutic use; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry / Q000627:therapeutic use; D008855:Microscopy, Electron, Scanning; D012387:Root Canal Filling Materials / Q000737:chemistry / Q000627:therapeutic use*; D012388:Root Canal Irrigants / Q000627:therapeutic use; D012389:Root Canal Obturation; D018915:Root Canal Preparation / Q000295:instrumentation / Q000379:methods; D012834:Silver / Q000737:chemistry / Q000627:therapeutic use; D016369:Smear Layer; D012973:Sodium Hypochlorite / Q000627:therapeutic use; D013499:Surface Properties; D013997:Time Factors; D014025:Titanium / Q000737:chemistry / Q000627:therapeutic use; D019227:Tooth Apex / Q000648:ultrastructure
D017220:Dentin-Bonding Agents; D004338:Drug Combinations; D004853:Epoxy Resins; C420130:Excite cement; D008689:Methacrylates; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; D012834:Silver; C028044:epoxy resin AH-26; D006171:Gutta-Percha; D004492:Edetic Acid; D014025:Titanium; D012973:Sodium Hypochlorite; D001729:Bismuth