In the intervention arm (SE adhesive) similar steps for prophylaxis and isolation was done as in control arm. SE adhesive (Adper Easy One, 3M ESPE, US) was applied to occlusal fissures with microbrushes and was rubbed on fissure surface with microbrush for 20 seconds. This was followed by air drying for 10-15 seconds followed by light curing for 10 seconds. Sealant was applied (Clinpro 3M ESPE, US) in a similar manner as for control group.
Clinpro
Clinpro is a dental device manufactured by 3M for use in dental clinics and laboratories. It is designed to aid in the cleaning and polishing of tooth surfaces.
Lab products found in correlation
10 protocols using clinpro
Comparative Evaluation of Adhesive Sealants
In the intervention arm (SE adhesive) similar steps for prophylaxis and isolation was done as in control arm. SE adhesive (Adper Easy One, 3M ESPE, US) was applied to occlusal fissures with microbrushes and was rubbed on fissure surface with microbrush for 20 seconds. This was followed by air drying for 10-15 seconds followed by light curing for 10 seconds. Sealant was applied (Clinpro 3M ESPE, US) in a similar manner as for control group.
Evaluation of Pit and Fissure Sealants
Nanohydroxyapatite and SHMP Effects on Fissure Sealant
Group 1 (control): The enamel was etched with phosphoric acid 35% (3 M, ESPE, St. Paul, MN, USA) for 20 s, rinsed and dried under a weak air stream. Then an unfilled fissure sealant (FS) (Clinpro, 3 M ESPE, St. Paul, Minn, USA) was applied and cured with a halogen light curing unit (Coltolux, Coltene, Whaledent, Altstaetten, Switzerland) at a power density of 550 mW/cm2 for 40 s.
Group 2 (nano-HA 0.15%): After the enamel was etched as described above for group 1, each sample was immersed in 5 mL of a solution that contained 0.15% nano-HA in a closed glass vial with continuous slow speed rotation (4 rmp) for 5 min to ensure that the nanoparticles remained in suspension and to avoid precipitation [24 (link)]. Then each tooth was dried under an air stream and the sealant was applied.
Group 3 (nano-HA 0.03%): The procedures were similar to group 2, except that the solution contained nano-HA at 0.03% concentration.
Group 4 (nano-HA 0.15% + SHMP 0.05%): The solution powder contained nano-HA 0.15% and SHMP 0.05%, which were mixed together before the solvent was added. The other procedures were similar to groups 2 and 3.
Group 5 (nano-HA 0.03% + SHMP 0.01%): The procedures were similar to group 4, except that the solution contained nano-HA at 0.03% and SHMP at 0.01%.
Fluoride-Releasing Sealants Evaluation
The materials were handled according to the manufacturers’ instructions and 32 samples were prepared. The samples consisted of eight blocks of each sealant with 5 mm width and 1 mm thickness; the samples were placed in cavities with similar measures in a Teflon matrix.[7 ]
All samples were polymerized using a LED device (Elipar, 3M ESPE) for 40 s, verifying with a radiometer that the intensity of light emitted has a minimum value of 400 mW/cm2.
The polymerized samples were removed from the matrix and were then stored in plastic bottles with 5 ml of deionized water. The samples were conserved at 37°C for 60 days and measured on days 1, 2, 4, 8, 28, and 60, which is similar to the time intervals used in previous studies.[8 9 (link)]
Evaluation of Remineralizing Agents
Fluoride varnish 25 ml (5% NaF) – BELAK-F (VladMiVa, Russia).
TCP paste –Clinpro™ (3 M ESPE, USA).
Nano-Hydroxyapatite gel – CTx4 Gel 1100 (CariFree, Canada).
Chitosan-Enhanced Resin Sealant Evaluation
Randomized Comparison of Pit and Fissure Sealants
11
would be applied to. If the coin landed as Heads, the sealant was placed on the right mandibular first permanent molar. Subsequently, the self-etch pit and fissure sealant (Group 2: Preventseal (Itena
®, France, PVSEAL-1.2)
12
was applied on the left mandibular molar. Similarly, if the coin landed as Tails, the conventional sealant was placed on the left mandibular first permanent molar and the self-etch pit and fissure sealant was applied on the right mandibular molar.
The group allocation was revealed to the principal investigator who performed the intervention just before the sealant placement procedure began by the operator who had carried out the randomization.
Evaluating Resin Sealant Retention
Occlusion evaluation was done for both the groups using articulating paper and the premature occlusal contacts if present were relieved using finishing bur. Evaluation of sealant retention was done at 6, 12, and 18-month intervals using Tonn and Ryge criteria5 under a dental operating microscope at 0.6x magnification.
Bioactive Nanofillers in Pit and Fissure Sealants
Mechanical Approach to Periodontal Health
Additionally, periodontal therapy performed at visit 3a comprised full mouth supragingival and, where indicated, subgingival debridement (sites with PPD ≤ 4mm). Subgingival debridement was performed under local anesthesia using sonic scalers followed by air polishing with glycine powder. The period of time between visits was chosen to evaluate the effects of the different mechanical approaches in conjunction with the different toothpastes (visit 2a to visit 3a: 4 weeks after the supragingival debridement and oral hygiene, and visit 3a to 4a: 8 weeks after the supra- and subgingival approach).
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