ABSTRACT
Introduction: Indirect composite restoration is one of the commonly followed procedures in the posterior teeth. The success of this is dependent on many factors, one being the luting cement. Hence, the current study explores the microleakage of the two luting cements at 2 different times. Materials and Methods: Eighty extracted human teeth were taken, and class II cavities were made that were to receive the composite inlays. They were grouped as supragingival and subgingival, which for further divided as were further subdivided to be observed for marginal leakage at cervical and occlusal margins, at the end of a day and 1 month. Each group had ten specimens. The luting cements that were evaluated were Variolink N and RelyX Unicem. After the composite inlay restoration was done for all the specimens, the sections were put on slides, and a stereomicroscope was used to measure the amount of dye penetration. Leakage was evaluated and compared using Mann-Whitney U test. Results: At the end of 1 day, there was no significant alteration in the microleakage in the occlusal or cervical regions for either region supragingivally or subgingivally between the two luting cements. Significant difference between the two cements at the cervical borders at the end of a month was seen for both the margins. When compared supragingivally and subgingivally at the end of 1 day or at the end of 1 month, there was not a significant difference for any of the cements. Conclusion: Within the constraints of the current investigation, it can be said that there was similar microleakage for both Variolink N and RelyX Unicem at the conclusion of a day's storage time. After a 1-month storage period, RelyX Unicem showed more cervical microleakage than Variolink N.
ABSTRACT
Introduction: To identify gender-based differences in pulpal sensory thresholds in human teeth utilizing various conducting media. Materials and Methods: The study involved 50 participants of both genders equally distributed. The maxillary central incisors were the teeth selected for the intervention. The three conducting media that were put to the test were Colgate Sensitive Pro-Relief Enamel Repair Toothpaste (CS), Himalaya herbals sensitivity toothpaste (HS), and Lignox 2% gel (LG). Subject's sensory threshold readings as well as the Visual analogue scale (VAS) scores were noted at the tiniest sensation they experienced. Following an ANOVA, a post hoc analysis was performed to confirm the significance between the three media. Results: Lox 2% Jelly significantly reduced sensory threshold values compared to the other conducting media (P < 0.001). Comparing the sensory threshold values of the sexes showed that men have greater values. Male and female readings differed significantly in the Lox 2% Jelly group (P = 0.021), whereas Colgate Sensitive Pro-Relief Enamel Repair Toothpaste, Himalaya herbals sensitivity toothpaste (P < 0.001) groups showed highly significant variances. All the three conducting media had a highly significant variance for the VAS scores. (P < 0.001). Conclusion: The conducting material used and gender affect the pulpal sensory thresholds to electric impulses produced by EPT.
ABSTRACT
Introduction: The application of the antioxidants after the teeth are bleached has been advocated to fasten the restorative process post-bleaching. The motive of this study was to examine and assess the micro-tensile binding strength of bleached enamel to the resin using a variety of antioxidant solutions. Finding the reason for the tooth fracture was the secondary outcome measured. Materials and Methods: An in vitro study was planned with 100 human extracted teeth, with 20 in each group with one as controls and 4 others tested for the antioxidants sodium ascorbate, epigallocatechin gallate, chitosan, and proanthocyanidin application. The bond strength of bleached enamel to the resin was well as the failure type was assessed after the values were noted and compared using the ANOVA and Tukey's methods keeping P < 0.05 as significant. Results: Epigallocatechin gallate specimens displayed the maximum micro-tensile bond strength under the investigational circumstances, whereas controls displayed the lowest micro-tensile bond strength. There was statistical alteration in micro-tensile bond strengths between all the groups except between epigallocatechin gallate vs chitosan and sodium ascorbate vs proanthocyanidin. High statistical significance was seen between the control and the antioxidant groups as well as between sodium ascorbate and epigallocatechin gallate and chitosan. Conclusion: The antioxidant chemicals significantly augmented the bond strength of bleached enamel to the resin that had been bleached. Also, when compared to the other experimental groups, epigallocatechin gallate and chitosan treatment displayed the greatest mean bond strength values.
ABSTRACT
Introduction: Endodontics has become a routine practice in the recent times and many recent advanced rotary systems are available commercially. Hence, in our study, we describe the canal transportation of the different file systems in various combinations of the "Glide path (Gp)" by cone-beam computed tomography (CBCT). Materials and Methods: In vitro study was with 40 single-rooted extracted human teeth that were grouped as "Group 1: Pathfiles (PF) and Group 2: V Gp 2 (V2)." Measurement of Centric ability, canal transportation, root canal curvature of the CBCT images was compared of the pre and the postpreperation of the canals with the two systems. Results: PF showed greater curvatures, working time, canal transportations, compared to the V2. PF showed lesser centric ratio, removed greater dentine compared to the V2 and also the cross-sectional area was also greater for the PF than V2. Conclusion: V2 performed superiorly than PF showing lesser canal transportation.
