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Objectives:To assess the prevalence of both impaction and associated pathosis in a Saudi population in Al-Madinah, Saudi Arabia based on digital panoramic radiographs.Methods:This study was carried out from December 2013 to February 2015. Panoramic radiographs of 359 male patients attending the Oral Diagnosis Clinics, Faculty of Dentistry, Taibah University, Al-Madinah, Saudi Arabia were reviewed. All images were evaluated to determine the prevalence and pattern of impacted third molars and canines, and associated pathosis.Results:Among 359 panoramic radiographs examined, 124 patients had impacted teeth. The impacted mandibular third molars were the most prevalent impacted teeth, 77.6% had class II pattern of impaction. Among the impacted maxillary canines, 75% were mesioangular and among 66 impacted maxillary third molars, 63.6% had class C. Our study showed that 5.8% of Saudi patients had 3 or more impacted teeth, 13.1% had 2 impacted teeth, and 15.6% had one impacted tooth. Associated pathosis was found in 18.2% among impacted maxillary third molars, and 31.5% among impacted mandibular third molars. The incidence of impaction decreases with age.Conclusion:The prevalence and pattern of impacted third molars among Saudis are almost similar to other racial populations. The number of missing wisdom increases with age. Although the percentage of pathosis associated with impaction was considerably low, it is essential to carry you regular oral examinations to preserve asymptomatic impacted teeth in good health.

Objectives:To evaluate and compare the shear bond strength (SBS) of Erbium laser etched enamel to acid etched and to detect morphological changes on laser etched enamel surface using scanning electron microscope (SEM). Moreover, Laser induced caries resistance is advantageous in Orthodontics.Methods:This is an Ex vivo study between January 2016 and December 2017, which comprises a total of 50 human premolars, extracted for orthodontic purpose, were used in this study. The samples were randomly divided into 2 groups of 25 each. The first group was etched using 37% phosphoric for 30 seconds. As for the second group, enamel was treated by Er: YAG laser operating at wavelength 2.94µm, power 1.5W and repetition rate 15Hz. Five teeth from each group were selected for SEM evaluation and the study were continued on 20 teeth from each group. Teeth were subjected to shear bond strength test.Results:It showed, no-significant difference between the mean of shear bond strength and of the etched groups (p=0.016).Conclusion:It was concluded that, laser etched group (1.5W/15Hz) resulted in clinically accepted bond strength and could be an alternative to conventional acid etching.

The image quality of the CS 9300 CBCT varied with variability in exposure protocols and different voxel sizes. The negative association between greater spatial resolution (smaller voxel size) and the MTF shows that the slanted edge method is not ideal for MTF evaluation of CBCT and is therefore not recommended for using it for this purpose.

Research has shown high levels of housing precarity among government-assisted refugees (GARs) connected to difficult housing markets, limited social benefits, and other social and structural barriers to positive settlement (Lumley-Sapanski, 2021). The COVID-19 pandemic has likely exacerbated this precarity. Research to date demonstrates the negative consequences of the COVID-19 pandemic for refugees and low-income households, including both health-related issues and economic challenges, that may exacerbate their ability to obtain affordable, suitable housing (Jones & Grigsby-Toussaint, 2020; Shields & Alrob, 2020). In this context, we examined Syrian government-assisted refugees’ experiences during the pandemic, asking: how the COVID-19 pandemic has impacted Syrian refugees’ experiences of housing stability. To examine this issue, we interviewed 38 families in Calgary, London, and Fredericton. Using a qualitative descriptive methodology for analysis and interpretation (Thorne et al., 1997), we found the liminality of settling as a GAR has been compounded by isolation, further economic loss, and new anxieties during the pandemic. Ultimately, for many participants, the pandemic has thwarted their housing stability goals and decreased their likelihood of improving their housing conditions. Based on our findings, we discuss potential policy and practice relevant solutions to the challenges faced by refugees in Canada during the pandemic and likely beyond.

The aim of this study is to determine level of oral cancer awareness by assessing dental students' awareness of etiology, risk factors, diagnosis, and management of oral cancer. A total of 70 undergraduate dental students at Taibah University, from third to fifth years, enrolled in a cross-sectional study during June 2013 academic year by filling in a questionnaire assessing their knowledge of oral cancer. Data were piled up and analyzed using SPSS version 20. Our results revealed that most of students recognized tobacco as a major risk factor for oral cancer. Regarding intra-oral site, 61% of students' distinguished tongue as the most common site. Concerning clinical signs, more than half of fourth year students were able to identify non-homogenous leukoplakia and erythroplakia as putative oral cancer signs. Overall, this study revealed quite unsatisfactory level of awareness concerning oral cancer among undergraduate dental students. This implies the necessity to improve dental education programs to enhance knowledge of oral cancer risk factors and early detection concepts.

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