Print ISSN: 1812-1217

Online ISSN: 1998-0345

Current Issue
Volume 21, Issue 2

Volume 21, Issue 2, Summer and Autumn 2021

Minimum Inhibitory Concentration of Iron Oxide Nanoparticles with Hydrogen Peroxide against Endodontic Enterococcus faecalis

Saraa Al-Mallah; Ali Al-Naimi

Al-Rafidain Dental Journal, 2021, Volume 21, Issue 2, Pages 158-164
DOI: 10.33899/rden.2021.128786.1062

Aims: This study aimed to assess the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) effect of iron oxide nanoparticles (IONPs) in combination with hydrogen peroxide (H2O2) by evaluating its effect against endodontic Enterococcus Faecalis ( E. faecalis) in the planktonic model. Materials and Methods: the tested irrigants groups (IONPs, 3% H2O2, 5.25% NaOCl, IONPs+H2O2) were serially diluted in brain heart infusion broth, and 100 μl of standard microbial suspensions of E. faecalis were added. The results were obtained based on turbidity and growth on selective enterococcus agar plates. Results: IONPs+H2O2 showed to be more effective against E. faecalis than IONPs, 3% H2O2 and 5.25% NaOCl as lower dilutions were required to inhibit the growth of the bacteria. NaOCl exhibited an antibacterial effect equivalent to that of H2O2, while IONPs exhibited a stimulatory growth at the high tested concentration. Conclusions: IONPs+H2O2 showing promissory antibacterial properties as an intracanal irrigating solution to control E. faecalis from the infected root canal.

Clinical and Histological Effects of N-acetyl Cysteine Intraperitoneal Injection on Primary Wound Healing in Rabbits.

Zaid muhammad

Al-Rafidain Dental Journal, 2021, Volume 21, Issue 2, Pages 165-176
DOI: 10.33899/rdenj.2021.129487.1087

Aims: This study aims to investigate the effect of ten days of intraperitoneal injection of N-acetyl cysteine (NAC) on full thickness wound healing of the  skin, using a rabbit model. Materials and Methods: Thirty - male rabbits were used to conduct this study. A full – thickness linear incision, (10 mm) was induced on the back of each rabbit and divided into two groups. Group 1: no treatment (control group) and group 2 (NAC-treated group) was injected intraperitoneally ten days before wound induction. Animals were randomly divided into three groups according to sacrificing date (1, 3 and 7) days. The site of intervention was assessed clinically and histopathologically on the 1st, 3rd, and 7th day of the experimental procedure. Results: The clinical observation of tissue type revealed that there were significant differences in type of tissue at 1 and 3 days at p-value ≤ 0.05, and the wound healing was converted to granulation tissue without slough and necrotic tissue formation. There was no significant difference at 7 days compared to the control group. The histopathological finding showed that there were significant differences in angiogenesis and granulation tissue formation between the two groups at 1 and 3 days at p-value ≤ 0.05, while there was no significant difference at 7 days. There was a significant difference of reepithelization at 3 and 7 days at p-value ≤ 0.05., Conclusions: Ten days of intraperitoneally N-acetyl cysteine injection before surgical procedures will significantly enhance the process of primary wound healing of rabbit skin.on secondary wounds.

Speeding Orthodontics: A Review Article

Nada Al-Hafidh; Afrah Al Hamdany; Lamiaa Hasan

Al-Rafidain Dental Journal, 2021, Volume 21, Issue 2, Pages 177-184
DOI: 10.33899/rdenj.2021.128952.1067

The request for orthodontic treatment has grown quickly in the last years. One of the most critical issues in orthodontic treatment is how to decrease the duration of orthodontic treatment since the most common complaint of orthodontic patients is prolong the time of treatment which is a huge burden on patients. Orthodontic tooth movement can be enhanced by different methods and techniques. The current study reviewed and summarized the evidence regarding the success of different methods on speeding orthodontic tooth movement.

An Overview on the Applications of Finite Element Analysis in Orthodontic

Ali Al-Khatib; lmiaa Hasan; Nada Al-Hafidh

Al-Rafidain Dental Journal, 2021, Volume 21, Issue 2, Pages 185-192
DOI: 10.33899/rdenj.2021.129173.1074

In the 21st era, technological progressions challenged the dental professional to perform extremely risky and multifaceted procedures more reliably and harmless way using the finite element method (FEM) that can sim-ulate and analyze the dental structures. As orthodontic revolve about the forces so FEM is one of the most accurate tools for the researchers in this ground. This review highlights the use of the finite element method in orthodontics and craniofacial research. This stores the different researches performed by using the finite ele-ment model to study the growth of the cranial structure, biomechanical reaction to orthopedic forces, ortho-dontic tooth movement, orthognathic surgeries application, and orthodontic implants