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Background: Oral health knowledge is essential for establishing healthy behaviors. Aim: The purpose of the study was to determine and compare the basic oral health knowledge of 3-6th grade government primary school students and teachers in rural areas of Saudi Arabia. Methods: A cross-sectional study was conducted among government primary school students and teachers in a rural area (Thadig and Ad-Delam) of the Riyadh region of Saudi Arabia using validated, structured, close-ended and self-administered questionnaires. The questionnaire comprised demographic variables and 18 multiple-choice items. A convenience sampling methodology was employed to select the study sample. Results: A total of 1864 subjects from rural area government primary schools [students (N = 1538) and teachers (N = 326)] participated in this study. The majority of the students were females 841 (54.7%), Saudi nationals 1376 (89.5%), and studying in 5th grade 446 (29%). Most teacher participants were females, 199 (61.0%), and Saudi nationals, 326 (100.0%). Teachers (12.62 ± 2.36) demonstrated significantly higher overall mean knowledge scores compared to the students (9.63 ± 2.36) (p < 0.001). Females and non-Saudi students showed significantly higher mean knowledge scores compared to their counterparts. However, 4th standard students showed significantly lower mean knowledge scores compared to other graders. Female teachers (13.17 ± 2.25) demonstrated significantly higher overall oral health knowledge scores compared to male teachers (11.75 ± 2.26) (p < 0.001). Conclusion: Basic oral health knowledge was adequate among 3-6th grade government primary school students and teachers in rural areas of the Riyadh region.

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Introduction: Digital radiography can take accurate measurements. In implant dentistry, intraoral periapical (PA), bite-wing (BW) and panoramic (OPG) radiographs are being used, although it had limitations of distortion. This research aims to assess the accuracy of digital radiography in measuring dental implants and to evaluate the SIDEXIS software’s reliability in measuring their dimensions.Materials and Methods: Over 192 implants from 316 radiographs were selected. All radiographs were analyzed using SIDEXIS software. Statistical analysis was performed using SPSS.Results: Statistically significant differences (P < 0.5) between the actual heights and widths compared to the measured radiographic dimensions. Over all the distortion was greatest in OPGs. The magnifications were 2.48mm in height and 0.82mm in width for OPGS, 0.17mm in width for BWs while in PAs it was 1.37mm in height and 0.156mm in width. The magnification was more in maxilla for PAs and OPGs. Anteriorly the PAs had the greatest magnification (2.16mm), and OPGs had the greatest at (3.03mm) in height posteriorly.Conclusion: Digital OPG, PA and Bitewing radiographs are reliable for performing dimensions linear measurements for implants, and PAs have the highest precision. Additionally, SIDEXIS software provided accurate results and can be considered a reliable method for implants’ assessment.