Background. Periodontal disease is a public health problem and is strongly associated with systemic diseases; however, its worldwide distribution is not fully understood. Objective. To evaluate global data of periodontal disease: (1) among adolescents, adults, and older population and (2) in low-, middle-, and high-income countries. Methods. This ecological study included data of periodontal disease from the World Health Organization’s data bank which are based on the Community Periodontal Index of Treatment Needs (CPITN code: 0 = no disease; 1 = bleeding on probing; 2 = calculus; 3 = periodontal pocket (PD) 4-5 mm; 4 = PD (6+ mm). Age- and income-related periodontal disease inequalities were evaluated across the globe. Results. Compared with 9.3% of adults and 9.7% of older persons, 21.2% of adolescents had no periodontal disease (P=0.005). Nearly 18.8% of adolescents compared with 8.9% of adults and 5% of older persons had bleeding on probing (P≤0.001). Similarly, 50.3% of adolescents, 44.6% of adults, and 31.9% older persons demonstrated the occurrence of calculus (P=0.01). On the other hand, older persons had the highest prevalence of PD 4-5 mm and PD 6+ mm than adults and adolescents (P≤0.001). The distribution of periodontitis (CPITN code 3 + 4) in adults differed significantly in low- (28.7%), lower-middle- (10%), upper-middle- (42.5%), and high-income countries (43.7%) (P=0.04). However, no significant differences in periodontitis (CPITN code 3 + 4) were observed in adolescents and older persons in low- to high-income countries. Conclusions. Within the limitations of data, this study found that the distribution of periodontal disease increases with age. Periodontitis was the most common in older persons and in population from high-income countries.

Background Dental offices are among the highest risk for transmission of the COVID-19, having the potential to transmit the virus via routine dental procedures. This cross-sectional study assessed the preparedness and perception of infection control measures against the COVID-19 pandemic by dentists in Saudi Arabia. Materials and methods This online survey addressed the impact and perception of the COVID-19 pandemic on dental practice in Saudi Arabia. The questionnaire comprised 26 closed-ended questions. Descriptive statistics included frequency distributions with percentages. In addition, the significance between the different demographic variables and questions about dentists' perception of the COVID-19 pandemic was tested using the Chi-square test. Results COVID-19 management in dental clinics varied in terms of adherence to the Ministry of Health (MOH) guidelines. Dental clinics' screening questionnaire for patients showed good adherence (67%), while the lowest agreement was detected with the question on the existence of an airborne infection in the isolation room (15%). Almost two-thirds of the respondents agreed that the dental reception area adopted the proper COVID-19 preventive measures. Greatest accord was observed in their answers on questions about dentists' perception of the COVID-19 pandemic, ranging from 64%-89%. In addition, there were statistically significant differences in questions about the perception of dentists towards the COVID-19 pandemic by different demographic variables such as age and years of work experience (p < 0.05).

Background Teledentistry is believed to improve dentalcare provided to patients and time management efficiency. In addition, teledentistry can be a useful tool for peer education, consultations and ensures proper channeling for referrals. Objective This study aimed to explore Saudi Arabian dental professionals' perceptions of teledentistry's benefits in improving dental practice and patient care. Methods A descriptive cross-sectional study involving an electronic survey of a sample of Saudi Arabian dental professionals. A validated 26-item, 5-point Likert-scale questionnaire was used to assess perceptions of dental professionals in four domains: usefulness of teledentistry for patients, the usefulness of teledentistry for dental practice; the potential of teledentistry to improve practice; and existing concerns about the use of teledentistry. Statistical analyses involved descriptive statistics, bivariate analysis using SPSS software. Significant differences were considered at a p-value of 0.05. Results With an overall response rate of 28.6%, 286 dental professionals participated in the study. More than 70% of respondents agreed or strongly agreed that teledentistry would improve dental practice through enhancing communication with peers, guidance and referral of new patients. A substantial proportion of respondents (60-70%) expressed uncertainty with technical reliability, privacy and diagnostic accuracy. The participants' qualification was statistically significant with usefulness of teledentistry for patients (p = 0.027), while work experience in years was statistically significant with both usefulness of teledentistry for dental practice and patients (p = 0.046 and <0.0001 respectively).

Data suggest that patients with SCD have increased susceptibility to dental caries, with a higher prevalence of tooth decay and lower prevalence of filled teeth. Known caries risk factors influenced oral health more markedly than did factors related to SCD.

Within the limitations of this study, it can be concluded that Corega has a significantly greater negative impact than distilled water on the flexural strength of HP resin base materials. Renew significantly increased the surface roughness of AP and HP, while Corega increased the surface roughness of all resin materials.