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This study aims to assess differences in biofilm bacterial composition between patients with low and high caries. Patients without a medical problem and with no history of antibiotic use, mouth wash or fluoride application in the previous 3 months were recruited. Caries was recorded at cavitation level; score was calculated by a national mean (dmft of 4.8 and DMFT of 2.7). Pooled biofilm samples were collected from mesial, distal, buccal, lingual, and occlusal surfaces. Based on caries experience, individuals were classified into low and high caries and both groups were compared regarding bacteria identified using 16S rRNA gene sequencing, and molecular phylogenetic analysis of the isolates was performed. A total of twenty seven randomly selected samples with low (n = 13) and high (n = 14) caries. Identification of oral bacteria was performed using 16S rRNA sequence, Rothia mucilaginosa and R. aeria were identified in low caries individuals, while R. dentocariosa was detected in high caries individuals. Two Streptococcus spp. were identified only in low caries S. salivarius and S. gordonii whereas S. sanguinis, S. mitis, S. sinensis, S. rubneri, S. vestibularis, S. cristatus and S. massiliensis were identified only in individuals with high caries. This study revealed the absence of R. mucilaginosa in the high caries subjects and its coexistence with the low caries subjects. Streptococcus mutans was insignificant contributor of caries among samples, while, Streptococcus sanguinis was the main constituent of high caries Saudi patients.
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BACKGROUND: Dental students face a variety of challenges as they enter the dental profession. The study aimed at assessing dental students' opinions about their perceived future career challenges in the dental profession and the associated factors. MATERIALS AND METHODS: This cross-sectional study of 637 students representing different public and private dental colleges was conducted in Saudi Arabia. The participants responded to a pretested questionnaire conducted online. RESULTS: There were 59.7% (n = 380) of males and 40.3% (n = 257) of females, and the mean age of the students was 21.80 (±2.14) years. The majority of participants thought that they will have difficulties in establishing their private clinic (63.9%) and finding a government job (>60%). Senior students were more likely to perceive getting a government job (OR = 1.79, P = 0.02), securing an admission into specialty program (OR = 2.75, P = 0.001), and establishing a private dental clinic (OR = 2.51, P = 0.001) as future career challenges than junior students. Similarly, female gender was associated with increased perception of challenges about finding a government job (OR = 1.911, P = 0.002), getting an admission into specialty program (OR = 1.5, P = 0.038), and establishing a private clinic (OR = 2.02, P = 0.001). In addition, low academic score and low level of father's education were associated with increased odds of perceiving challenges of finding a government job and getting an admission into specialty programs. CONCLUSIONS: Establishing a private clinic and getting a government job were the most common career challenges. Senior students, female students, and students with low academic scores had increased likelihood of facing employment and academic-related difficulties.
RESUMEN
OBJECTIVES: To assess dentists' intention to manage drug users (DUs) and to evaluate the role of the theory of planned behavior (TPB) and continuing education (CE) in explaining this intention. MATERIALS AND METHODS: A cross-sectional study was conducted in 2017, including dentists from three major Saudi cities. A questionnaire assessed personal and professional background and components of TPB: attitude, perceived social norms, perceived control and intention to manage DUs. Respondents expressed their agreement on a scale from 1 (disagree) to 7 (agree). Receiving CE to manage DUs was also assessed. Adjusted linear regression was used to assess the impact of the TPB constructs and receiving CE on dentists' intention. RESULTS: Response rate = 72% (255/354), mean (SD) age = 35.2 (11.9). The mean (SD) for positive intention to manage DUs = 5.34 (1.37), negative attitude = 4.03 (1.10), positively perceived norms = 5.78 (1.06) and perception of no control = 4.45 (1.08). Only 9% received CE to manage DUs. Positive intention was associated with perception of positive norms (B = 0.73, 95% CI = 0.59, 0.87) and perception of no control (B = -0.47, 95% CI = -0.63, -0.32) but not with receiving CE (P = 0.58). CONCLUSION: In major Saudi cities, dentists' intention to manage DUs was positive and was explained by TPB components: perception of norms and perception of control. Modified and targeted CE is needed to address this problem.
