In the present in vitro study, the dentin desensitizing agents tested showed a wide range of dentinal tubule
occlusion, under SEM examination.
It has been reported that yeasts like Candida albicans (CA) have the ability to grow as mono-infections and invade dentinal tubules
One-way analyses of variance (ANOVA) and Tukey-Kramer post hoc tests were used to examine differences in roughness, depth, diameter and quantification of dentinal tubule
orifices (AFM), and tensile bond strength among the groups of dentine and among the subgroups with adhesive system.
(1, 2) Tissue debridement with manual and rotary instruments produces dentinal smear, a layer about 2-2.5 urn thick that accumulates on the surface of dentinal tubules
and inside them and is composed of bacteria, toxins, hydroxyapatite crystals, saliva, and blood, making root canal irrigation necessary.
Kim, "Combined effects of Er:YAG laser and nano-carbonate apatite dentifrice on dentinal tubule
occlusion: in vitro study," Photomedicine and Laser Surgery, vol.
The quality of the seal depends on sealer's ability to consistently fill the space between the obturation material (e.g., gutta percha) and root canal, but also to fill root canal aberrancies and to penetrate into the lateral canals and dentinal tubules
Owing to this attachment, calcium ions are released into the oral fluid that occludes dentinal tubules
Kishen, "Delivery of antibacterial nanoparticles into dentinal tubules
using high-intensity focused ultrasound," Journal of Endodontics, vol.
(40,41) Use of a standard fluoridated dentifrice can cause abrasive particles to be deposited at dentinal tubule
openings and encourage their closure.
However, previous studies showed that incomplete removal of CH before completion of canal obturation results in it functioning as a barrier between the root canal sealer and dentin walls, thus increasing sealer penetration into the dentinal tubules
According to the evolution of the pathological process, they are not restricted to the canal lumen, but can reach deeper portions inside the dentinal tubules
, root canal system, external root surface (cementum resorption), or even the periapical lesion when present.
Based on the results of the present study, the combination of nanohydroxyapatite paste and a C[O.sub.2] laser of moderate power density occluded the dentinal tubules
and reduced the permeability of exposed dentin.