Publications by authors named "Farhat Nasreen"
Article Synopsis
- * Sixty extracted human premolars were tested, with different groups receiving varying treatments, including CH mixed with saline, water, or local anesthetics, and other materials like Metapaste and RC-Cal.
- * Results showed that teeth without medicament (Group I) had the highest strength, while all CH-treated groups demonstrated reduced compressive strength, indicating that CH negatively impacts dentin integrity regardless of the vehicle used.
Aim: To evaluate root reinforcement by four different sealers, namely, AH Plus, MTA Fillapex, Dia-ProSeal, and GuttaFlow 2, on endodontically treated teeth.
Materials And Methods: Sixty human mandibular premolars were randomly divided into four groups of 15 teeth each, according to the type of sealer used: Group I AH Plus, Group II MTA Fillapex, Group III Dia-ProSeal, and Group IV GuttaFlow 2. All samples were decoronated to a length of 13 mm from the apex.
Objective: The objective of this study was to evaluate the effect of 8% and 17% ethylenediaminetetraacetic acid (EDTA) exposure for 1 min and 10 min on the fracture resistance of endodontically treated roots.
Methodology: Sixty human single-rooted teeth were decoronated and divided into six groups ( = 10). Canal preparation was carried out except in negative control group, using the ProTaper rotary file system.
Aim: The objective of this study was to evaluate the effectiveness of 5.25% sodium hypochlorite (NaOCl), 2% chlorhexidine (CHX), and 2% peracetic acid (PAA) in disinfecting Resilon cones and to evaluate topographical changes microscopically under scanning electron microscope (SEM) after rapid chemical disinfection.
Materials And Methods: Resilon cones were disinfected in an ultraviolet (UV) light chamber for 20 min and contaminated by immersing in a microbial suspension of Enterococcus faecalis for 30 min.
Aims And Objectives: The purpose of this study was to compare the efficacy of 5.25% sodium hypochlorite, 2% chlorehexidine and MTAD in disinfecting gutta-percha cones and to analyze the surface topography of gutta-percha cones after the rapid chemical disinfection procedure.
Materials And Methods: Gutta-percha cones were immersed in suspensions of Enterococcus faecalis and Staphylococcus aureus separately.
Article Synopsis
- This study aimed to assess how the duration of exposure to eugenol-based temporary restorative materials affects the bond strength of different self-etching adhesives to dentin, specifically over 24 hours, 7 days, and 14 days.
- Forty extracted human teeth were prepared and divided into groups that tested noneugenol cement and eugenol cement for varying time intervals before applying adhesive systems.
- Results indicated that 24-hour exposure to eugenol significantly weakened bond strength, but longer exposure durations (7 and 14 days) did not show any further reduction in bond strength for both two-step and one-step self-etch adhesives.
Aim: To evaluate the effect of direct and indirect technique, bevel placement, and aging on the fracture resistance of composite restorations bonded to sectioned incisal edges.
Materials And Methods: Incisal thirds of 80 human maxillary incisors were sectioned. Four treatment groups of 20 teeth each were formed as follows: Direct composite with bevel and without bevel (Adper single bond 2/Filtek Z350); indirect composite with bevel and without bevel (prepolymerized Filtek Z350 cemented with Adper single bond 2/Relay × ARC).