Nassr Al-Maflehi

Radiographic investigation of in vivo endodontically treated maxillary premolars in a Saudi Arabian sub-population

Aim: To determine the prevalence of the number of root canals in permanent maxillary first and second premolars of a Saudi Arabian sub-population. Results will be compared to previous Asian studies. Materials and Methods: A total of 894 periapical radiographs of endodontically treated maxillary first and second premolars of 628 Saudi patients (268 males and 360 females) were viewed. The teeth were segregated into maxillary first premolars (463) and maxillary second premolars (431). The diagnostic, working length, master cone and final films with different angles were mounted, projected and, with the utilization of written clinical records, evaluated. Teeth with multiple canal systems were categorized according to whether the canals exited the root by common or separate apical foramen. Data was analyzed statistically using Chi-square test and professional t-test, by comparing pairs of groups with the significant level established at 5% (P < 0.05). Results: More than 90% of first maxillary premolar and more than 50% of the second maxillary premolar was found to have two canals. There was no significant difference between male (92%) and female (95%) in the distribution of the two root canals of the first maxillary premolar (t-test = 1.21, P value = 0.228), however, there was significant difference between the distributions of male (69.4%) and female (52.2%) of the two root canals within the second maxillary premolar (t-test = 3.75, P value = 0.000). Few teeth showed three canals. Conclusion: The number of root canals of the maxillary first premolar in Saudi population shows a higher incidence of two canals (93.6%) than previously reported. In addition, the figure is higher than most of the Asian countries.

Knowledge about tooth avulsion and its management among dental assistants in Riyadh, Saudi Arabia

BackgroundStudies evaluating dental assistants’ knowledge about tooth avulsion and its management are rare. The purpose of this study was to evaluate the level of knowledge about tooth avulsion and its management among dental assistants in Riyadh, Saudi Arabia and to assess its relationship with their educational background.MethodsA convenience sampling methodology was employed for sample selection. Over a period of four months starting in February, 2013, 691 pretested 17-item questionnaires were distributed. A total of 498 questionnaires were returned for an overall response rate of 72.1%. Six questions were related to knowledge about permanent tooth avulsion and one question was related to knowledge about primary tooth avulsion. Correct answers to these questions were assigned one point each, and based on this scoring system, an overall knowledge score was calculated. An analysis of covariance was used to test the association between the level of knowledge (total score) and the educational qualifications of the respondents (dental degree and others). A P-value of 0.05 was considered the threshold for statistical significance.ResultsThe majority of the respondents (n = 387; 77.7%) were non-Saudis (377 were from the Philippines), and 79.1% (n = 306) of the Filipinos had a dental degree. The question about recommendations for an avulsed tooth that is dirty elicited the highest number of correct responses (n = 444; 89.2%), whereas the question about the best storage media elicited the lowest number of correct responses (n = 192; 38.6%). The overall mean score for knowledge about tooth avulsion was 6.27 ± 1.74. The mean knowledge score among the respondents with a dental degree was 6.63 ± 1.37, whereas that among the respondents with other qualifications was 5.71 ± 2.08.ConclusionsThe educational qualifications of the surveyed dental assistants were strongly correlated with the level of knowledge about tooth avulsion and its management.

Association between Self-Reported Bruxism and Sleeping Patterns among Dental Students in Saudi Arabia: A Cross-Sectional Study

Objectives. The aim of this cross-sectional study was to identify sleeping patterns among dental students and their association with self-reported bruxism in Riyadh Colleges of Dentistry and Pharmacy (RCsDP). Methods. A cross-sectional study was performed including 549 students (67 men and 482 women). A structured questionnaire was adopted from The PSQI (The Pittsburgh Sleep Questionnaire Index) used for data collection. It included questions which are categorized into sleeping habits, sleep-related symptoms, and additional questions concerning bruxism. This questionnaire was randomly distributed among all college preclinical and postclinical students. Sleep bruxism diagnosis was based on self-reported data. The data were analyzed using Chi-square tests through SPSS software for Windows. Results. Statistical analyses revealed significant correlations between self-reported bruxism and sleeping habits including sleep initiation (χ 2 = 22.6, p = 0.000), continuous sleep until morning (χ 2 = 19.2, p = 0.001), nighttime sleep duration (χ 2 = 20.2, p = 0.000), and length of daytime naps (χ 2 = 28.35, p = 0.000). There was an association between self-reported bruxism and sleeping-related symptoms including awakening early in the morning before the usual time without a cause (χ 2 = 16.52, p = 0.000) and increased nightmares (χ 2 = 13.7, p = 0.001). Conclusions. Poor sleeping pattern was an important factor among dental students, who reported sleep bruxism.

Evaluation of calcium hydroxide removal using EndoActivator system: An in vitro study

Aim: The aim of this study was to compare the calcium hydroxide (Ca(OH) 2 ) removal efficacy of the EndoActivator system with that of conventional irrigation with a syringe and hand file manipulation. Materials and Methods: A total of 44 extracted human single-rooted mandibular premolars were used. The root canal systems of all teeth were cleaned and shaped, then filled with Ca(OH) 2 paste. The teeth were divided into two groups: Ca(OH) 2 was removed using ethylenediaminetetraacetic acid (EDTA) and sodium hypochlorite (NaOCl) with hand filing and irrigation (Group 1) or the EndoActivator system (Group 2). Each tooth was split into two halves and examined under a scanning electron microscope. Results: Ca(OH) 2 particles were completely removed at the coronal level in both experimental groups. More Ca(OH) 2 particles were present in the apical third than in the middle-third in both groups. No significant interaction was observed between the two experimental groups or among the three examined levels (P > 0.05). Conclusion: Agitation with NaOCl and EDTA improved Ca(OH) 2 removal only in the coronal third of the root canal. Use of the EndoActivator system did not improve the efficacy of Ca(OH) 2 removal in the middle and apical thirds.

Prevalence of apical periodontitis and quality of root canal treatment in an adult Saudi population

Objectives: To determine the health status of periradicular tissue and the quality of root canal fillings in an adult Saudi population attending dental clinics for the first time. Methods: This cross sectional study was conducted in the dental clinics at King Saud University, Riyadh and other dental centers (Jeddah, Najran, and Albaha City), Kingdom of Saudi Arabia between year 2010 and 2012. Good-quality panoramic radiographs of 926 Saudi subjects (540 males and 386 females)were analyzed based on the gender, age, health status, smoking habits, periapical status of the endodontically treated teeth, technical quality of the root canal fillings, and the presence or absence of coronal restoration. Data were calibrated and statistical analyses were performed using the Statistical Package for the Social Sciences (SPSS Inc., Chicago, IL, USA) version 17. Results: Of the 25,028 teeth examined, 1,556 teeth (6.2%) had apical periodontitis (AP). Male subjects aged over 55 years and females between 36 and 45 years had higher AP. A total of 36 diabetic and 87 smokers subjects had AP. The AP was more common in male diabetics than female (p=0.383), and in female smokers more than male (p=0.44). Only 42.2% of male and 57.7% of female teeth had adequate root canal treatment. Conclusions: Apical periodontitis was significantly related to diabetes, smoking, and inadequate endodontic treatment.

Influence of space size of abutment screw access channel on the amount of extruded excess cement and marginal accuracy of cement-retained single implant restorations

Statement of problem. The detrimental effect of extruded excess cement on peri‐implant tissue has been well documented. Although several techniques have been proposed to reduce this effect by decreasing the amount of extruded cement, how the space size of the abutment screw access channel (SAC) affects the amount of extruded cement and marginal accuracy is unclear. Purpose. The purpose of this in vitro study was to evaluate the effect of the size of the unfilled space of the abutment SAC on the amount of extruded excess cement and the marginal accuracy of zirconia copings. Material and methods. Twelve implant replicas and corresponding standard abutments were attached and embedded in acrylic resin blocks. Computer‐aided design and computer‐aided manufacturing (CAD‐CAM) zirconia copings with a uniform 30‐&mgr;m cement space were fabricated by 1 dental technician using the standard method. The copings were temporarily cemented 3 times at different sizes of the left space of the SAC as follows: the nonspaced group (NS), in which the entire SAC was completely filled, the 1‐mm‐spaced group (1MMS), and the 2‐mm‐spaced group (2MMS). Abutments and crowns were ultrasonically cleaned, steam cleaned, and air‐dried. The excess cement was collected and weighed. To measure the marginal accuracy, 20 measurements were made every 18 degrees along the coping margin at ×300 magnification and compared with the pre‐cementation readings. One‐way ANOVA was calculated to determine whether the amount of extruded excess cement differed among the 3 groups, and the Tukey test was applied for multiple comparisons (&agr;=.05). Results. The mean weights (mg) of extruded excess cement were NS (33.53 ±1.5), 1MMS (22.97 ±5.4), and 2MMS (15.17 ±5.9). Multiple comparisons showed significant differences in the amount of extruded excess cement among the 3 test groups (P<.001). The mean marginal discrepancy (&mgr;m) of the pre‐cemented group (29.5 ±8.2) was significantly different (P<.01) from that of the NS (72.3 ±13.7), the 1MMS (70.1 ±19), and the 2MMS group (70.1 ±18.8). No significant differences were found in marginal accuracy among the 3 test groups (P=.942). Conclusions. Within the limitations of this in vitro study, leaving a 2‐mm space in the SAC reduced the amount of extruded excess cement by 55% in comparison with the nonspaced abutments. However, no effect was found on the marginal accuracy of zirconia copings.

Knowledge about permanent tooth avulsion and its management among dentists in Riyadh, Saudi Arabia

BackgroundThere is a lack of adequate information on dentists’ knowledge about tooth avulsion and its management in Saudi Arabia. The aim of this study was to evaluate the level of knowledge about permanent tooth avulsion and its management among dentists working in Riyadh, Saudi Arabia.MethodsA total of 550 dentists were contacted to request their participation in this 19-item questionnaire survey over a three-month period starting in January 2015 using convenience sampling methodology. A questionnaire consisting of demographic items and multiple-choice questions regarding knowledge of avulsion and its management was used. The level of knowledge was assessed using a scoring system that assigned one point for each correct answer and zero points for wrong answers, with a maximum possible score of ten points. An independent t-test was used to compare the level of knowledge (mean score) based on particular variables, such as sex, nationality, type of practice, current employment, working hours and whether the respondents had attended a continuing dental education (CDE) programme on avulsion management. The level of significance was set at P< 0.05.ResultsA total of 470 completed questionnaires were collected with data suitable for statistical analysis. The majority of the respondents were Saudi (n = 331; 72.1 %) and general practitioners (n = 278; 59.3 %). Most of the participants correctly responded to the knowledge-based questions, except the questions regarding the best storage medium (milk: 24.1 %) and the duration of follow-up by clinical and radiographic examination (5 years: 15.6 %). The mean knowledge score was 5.94 ± 1.57. Gender (P = 0.001), current employment (P = 0.045) and working hours per day (P = 0.020) had a significant effect on the mean knowledge score.ConclusionsThe surveyed dentists were found to have a moderate knowledge of avulsion and its management, although a relative lack of knowledge was observed regarding the duration of follow-up after replantation.

Knowledge and orientations of medical interns toward periodontal disease in Saudi Arabia

Background and Aim: This study was conducted to assess the periodontal knowledge, orientations of Saudi medical interns and the medical curriculum. Study Population and Methodology: Questionnaires were distributed to 221 medical interns chosen randomly from two major educational institutions in Saudi Arabia. Questions were developed from literature reviews. The questionnaire had five true/false knowledge items, and eight Likert-scale questions. Data were analyzed by computerized SPSS (version 20). Level of significance was set at P < 0.05. Results: Of the 221 respondents, 66% were male and 34% were female. Most of the participants were 24 years old (48%). About 40% of the interns answered all five true/false general knowledge questions correctly, nearly half of the respondents (49.8%) reported they never asked patients if they were diagnosed with periodontal disease, 93.2% reported not receiving any training about periodontal disease in medical school, 23.5% reported they would feel absolutely uncomfortable performing a simple periodontal examination, about one-third of interns (29.4%) agreed that patients expect physicians to discuss/screen for periodontal disease, 43.9% felt that discussing/evaluating the periodontal status of their patients was peripheral to their role as physicians, nearly half of interns (48.4%) reported never screening patients for periodontal disease, and 33% stated they never referred patients to dentists. Conclusion: Medical interns were not prepared nor trained to screen patients for periodontal disease. They had limited knowledge about the association between periodontal health and general health. Oral health training as part of the medical curriculum is strongly recommended.

Effectiveness of oral health education intervention among female primary school children in Riyadh, Saudi Arabia

Objective This study aimed to examine the effectiveness of oral health intervention on the improvement in knowledge and self-reported oral health behavior among 6–8 year old female primary school children in Riyadh, Saudi Arabia. Materials and methods The sample consisted of 1661 girls in primary schools who are 6 to 8-year-olds (first, second and third graders). The children’s level of knowledge was assessed by a self-administered questionnaire that was formulated for this specific age and divided into two parts; oral health knowledge and self-reported oral health behavior. There were seven multiple choice questions and one true/false question with five underlying parts in the questionnaire which contained basic information about oral health knowledge, oral hygiene practices and certain habits that affect teeth. The questionnaires were distributed before and six weeks after implementation of the oral health educational program to measure the level improvement of knowledge regarding oral health among these children. Results All the questions showed statistically significant improvement in knowledge and self-reported behavior in the post intervention group. There was a significant increase in the level of knowledge by 11.24% and level of self-reported behavior by 25% after intervention (P < 0.001). The highest net change in the knowledge due to intervention was noted among third graders (13.3%), whereas for self-reported oral health behavior, it was noted among first graders (28.3%). Conclusion The results of this study showed that an easy-to-organize and inexpensive school-based intervention can, on a short-term basis, be effective in improving the knowledge and self-reported oral health behavior of children.

Diabetes and driving recommendations among healthcare providers in Saudi Arabia. A significant gap that requires action

Objectives: To assess healthcare providers’ knowledge and awareness of the recommendations for drivers with insulin-treated diabetes in Saudi Arabia. Methods: A cross-sectional study was conducted among healthcare providers working at 4 tertiary hospitals in Riyadh, Saudi Arabia between April 2016 and December 2016 using a self-administered questionnaire. Results: A total of 285 healthcare providers completed the survey (response rate 88.5%). Most (70.2%) were aware of the safe driving recommendations for patients with insulin-treated diabetes. However, the need to check blood glucose levels before driving was underestimated by almost one-third (30.2%). Only one-quarter (24.6%) identified the correct level of blood glucose level that is safe for a patient when driving, and 28.4% identified the recommended time for checking blood glucose before driving. Participants who were aware of the recommendations for safe driving had a significantly higher average knowledge score (68.8%) than those who were not aware (58.8%; p<0.001). There was a significant difference in the average knowledge score among medical specialties (p=0.002) and job levels (p<0.001). Conclusions: Most healthcare providers identified the importance of evaluating their patients for ability to drive safely, but we found some important areas of knowledge deficit. Professional intervention to improve healthcare providers’ awareness and knowledge regarding diabetes and driving is the first step in improving detection and reporting high-risk drivers with diabetes to prevent future driving mishaps.