Oral Health-Related Quality of Life Following Root Canal Treatment of First Permanent Molars Among Children. A Cross-Sectional Study

Aim

This study aimed to assess the Oral Health-Related Quality of Life (OHRQoL) of pediatric patients (9-18 years old) who underwent root canal treatment (RCT) on first permanent molars (FPMs).

Methods

A cross-sectional study was conducted at three healthcare centers in Jeddah, Saudi Arabia. Participants (n = 482) completed the validated OHIP5-Ar questionnaire to assess OHRQoL. Responses were classified as "optimal" (no problems) or "less than optimal" (any reported problems). Logistic regression analyzed the relationship between OHRQoL and sociodemographic factors.

Results

There were 66.8% children reported optimal OHRQoL after RCT. Logistic regression showed no significant association between optimal OHRQoL and gender, family income, or location of treated tooth. However, although not statistically significant. Treating only one FPM with RCT (compared to multiple teeth) and lower family income (compared to higher income) were more likely to have decreased or increased odds of optimal OHRQoL (AOR = 0.684 or 1.424; respectively).

Conclusion

RCT on FPMs can be a successful treatment option for pediatric patients, offering optimal oral health-related quality of life.

Influence of curing duration and mixing techniques of bulk fill resin composites on bi-axial flexural strength and degree of conversion

OBJECTIVES

The aim was to assess the influence of polymerization duration, method and resin manipulation techniques on the biaxial flexural strength (BFS) and degree of conversion (DC) of bulk fill resin composites (BFRC).

METHODS

One hundred and eighty disc specimens were fabricated using MultiCore (MC) and Core-It (CI) bulk fill resin composite. Each material group, specimens were divided into nine subgroups based on curing methods (Light cure for 10 and 20 s; and auto-cure) and mixing techniques (first auto-mix, second automix, and hand mix). BFS was tested with a ball indenter at a crosshead speed of 0.50 mm/min. DC was assessed for MC and CI materials for 10 s and 20 s light cure; and auto cure specimens using Fourier Transform-Infrared Spectroscopy (FTIR). Statistical data comparisons were performed using ANOVA, Bonferroni and Tukey-Kramer tests.

RESULTS

For MC and CI, BFS was highest in 10 s light cure specimens, however comparable to specimens cured for 20 s (p > 0.05). Auto cure specimens showed lower BFS than light cured samples for both materials (p < 0.05). Hand mixed specimens showed significantly compromised BFS compared to automix technique for MC and CI. DC % was comparable for 10 s and 20 s light cure methods for both materials (p > 0.05), which was higher than DC % of auto cure bulk fill resins (p < 0.05). CI showed higher DC % and BFS compared to MC bulk fill resin composite.

CONCLUSION

Photo-polymerization duration of 10 and 20 s showed similar outcomes for BFS and DC %; and BFS for auto-mixed resins (MC and CI) was significantly higher than hand mixed resin. BFS and DC was higher in photopolymerized groups as compared to auto-cured resin regardless of the manipulation technique for both materials (MultiCore and Core it).

The Role of Social Media in Promoting Women's Health Education in Saudi Arabia

Social media has the potential to improve women's health in developing countries through health education and promotion. In the Arab world, women's health interventions are lacking. However, with a high penetration rate of social media in the Arab world, there is good opportunity to utilize social media platforms such as Twitter to promote women's health. In this paper, we analyze the Tweet feeds of Saudi-based Twitter account to promote women's health. A total of 5167 Tweets were extracted and analyzed retrospectively, using NVivo Ncapture between June 2014 and March 2015. There were a total number of 3449 followers by March 20, 2015. Results showed that a majority of the Twitter followers (61%, n=2104) were seeking gynecological information, followed by pregnancy related information (27%, n=931), breast-feeding advice (9%, n=310), and other health related information (3%, n=103). Results also showed an increased level of health awareness and comprehension among Twitter followers. Further research is needed to promote women's health in Saudi Arabia and the Arab world through social media platforms such as Twitter and similar platforms including Instagram, Facebook, and YouTube which are also popular in the Arab world.

Electronic Dental Record (EDR) Use in Saudi Arabia: An Exploratory Study

The purpose of this exploratory study is to provide an overview of the electronic dental records (EDR) systems used at National Guard Health Affair (NGHA) hospitals in the Kingdom of Saudi Arabia (KSA). Different sources of data were collected between February 18 and March 16, 2014. Sources of data included interviews with key informants. Key informants interviews included one 30 minute interview with an information technology specialist working at NGHA; seven 30-40 minute interview with dentists working in both the NGHA hospital and affiliated NGHA Primary Healthcare Clinics (PHCs). Two dental ward clerks were interviewed for 30 minutes and two dental directors were interviewed for 1 hour each. Four main themes emerged as a result of the analysis of the data. The main themes that emerged centered on staff satisfaction and workload, incomplete information, missing files, and adoption of EDRs. There were several challenges identified with the use of EDRs in Saudi Arabia. The challenges related to resistance to use the EDRs by clinical staff; lack of computer skills by clinical staff; usability of the systems; lack of interest in using EDRs; and lack of a clear management change strategy. Moving forward, these issues should be addressed so that more EDRs are implemented in all healthcare institutions in Saudi Arabia.

Use of the Saccharomyces cerevisiae endopolygalacturonase promoter to direct expression in Escherichia coli

In Saccharomyces cerevisiae, an endopolygalacturonase encoded by the PGL1 gene catalyzes the random hydrolysis of the α-1,4 glycosidic linkages in polygalacturonic acid. To study the regulation of the PGL1 gene, we constructed a reporter vector containing the lacZ gene under the control of PGL1 promoter. Surprisingly, when Escherichia coli DH5α was transformed by this vector, cells harboring the constructed plasmid produced blue colonies. Sequence analysis of this promoter revealed that E. coli consensus sequences required to express an in-frame lacZ alpha product were present. We next decided to investigate how the PGL1 promoter is regulated in E. coli compared to yeast. In this study, we examined the modulation of the PGL1 promoter in E. coli, and the results indicated that its activity is greatly induced by saturated digalacturonic acid and is indirectly regulated by the transcriptional regulators the 2-keto-3-deoxygluconate repressor. Moreover, PGL1 expression is enhanced under aerobic conditions. We found that β-galactosidase activity in E. coli could reach 180 units, which is 40-fold greater than the activity produced in S. cerevisiae, and greater than recombinant protein expression previously reported by other researchers. We thus demonstrate that this vector can be considered as a dual expression plasmid for both E. coli and S. cerevisiae hosts. So far, no modulation of endoPG promoters expressed in E. coli has been reported.