Radiographic Investigation of Root Canal Morphology of Permanent Mandibular Molars in Makkah Population (Saudi Arabia) Using Cone-Beam Computed Tomography.

Objectives: This study aimed to analyze the root canal morphology of first and second permanent mandibular molars among Makkah population by using cone-beam computed tomography (CBCT). Materials and Methods: CBCT images of two hundred eight patients were obtained from the Faculty of Dentistry, Umm Al-Qura University, Makkah, Saudi Arabia. In all images, mandibular first and second molars were evaluated for the number of roots and their morphology, number of root canals, canal configuration in each root according to Vertucci's classification, and the presence of a C-shaped canal. Results: Most of the mandibular first molars had two roots (96.5%) and three root canals (77.7%). Type IV canal configuration prevailed (75.6%) in the mesial roots, and type I canal configuration prevailed (71.7%) in the distal roots. For the mandibular second molars, the majority had two roots (96.3%) and three root canals (82.7%). Type IV canal configuration prevailed (48%) in the mesial roots and type I (99.1%) in the distal roots. C-shaped canals were detected in 5.7% of the mandibular first molars and 4% of the mandibular second molars. There was no statistical difference between the mandibular first and second molars (P > 0.05) in the shape of the roots and the presence of the C-shaped canals. Conclusion: Most of the mandibular molars in Makkah population presented with two roots and three root canals. The incidence of three-rooted mandibular molars was low, and it was higher in the first molars than second molars. The type IV root canal system prevailed in mesial roots and type I in distal roots.

Temporomandibular joints disorders (TMDs) prevalence and their relation to anxiety in dental students.

Background: Temporomandibular joint disorders (TMDs) are very common disorders affecting the population and causing pain. Researchers have reported a high prevalence of TMDs among university students due to increased distress. The aims of this study were to determine the frequency of TMDs in Umm al-Qura University (UQU) dental students using the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD), and to examine the relationship between anxiety, bruxism, and TMDs among those students. Methods: The DC/TMD pain screener questionnaire was completed by dental students. Students who reported TMD pain or had at least one positive TMD symptom were invited to the dental clinic for a full TMJ evaluation. History of bruxism was documented and an ultra-brief tool for detecting anxiety and depression (Patient Health Questionnaire-4 PHQ) was completed by all students. Results: A total of 240 students responded to the TMD pain screener in which 119 reported at least one TMJ symptom. Only 93 dental students presented to clinical examination in which 64.5% (n=60) of them had temporomandibular joint disorders. Disc displacement with reduction and local myalgia (38.7% & 32.25%, respectively) were the most frequent diagnosis. A total of 29% (n=27) of students had more than one diagnosis. Overall, 41 participants (44.09%) reported a positive response to the anxiety scale and (n=38) 40% of participants reported parafunctional habits. Both the history of bruxism and anxiety were significantly related to TMDs (P=0.0002) and also significantly higher in women of higher academic years (P≤0.01). Conclusions: This study found a high prevalence of TMDs among UQU dental students. Disc displacement with reduction was the most prevalent disorder. Bruxism and anxiety were associated with painful TMDs.

Dental Rehabilitation of a Child with Ectodermal Dysplasia: A Case Report.

A nine-year-old girl was presented to the dental clinic at King Abdulaziz Medical City in Jeddah with carious posterior primary teeth and discolored teeth. She was referred to a pediatric geneticist to rule out any medical conditions. She was suspected to have ectodermal dysplasia (ED). DNA testing was requested and sent to Germany to confirm the clinical findings. Afterward, full-mouth rehabilitation was done including prophy and fluoride application, composite restorations, stainless steel crowns, and pulp therapy. The treatment was planned to be carried out under local anesthesia due to the cooperative behavior of the child and the parents' request. Treatment objectives were oriented to achieve esthetic and functional rehabilitation of all carious teeth, maintain occlusion, in addition to maintaining spaces for the missing permanent teeth for future replacement. The patient became caries-free. Oral hygiene was improved which resulted in gingival inflammation resolution. Spaces were maintained and the behavior of the child was improved during recall visits from positive to definitely positive. Multidisciplinary approach in the management of oral and dental manifestations associated with ED including pediatric dentists, prosthodontists, and orthodontists is of paramount importance. HOW TO CITE THIS ARTICLE: Gholman RR, Kassar WM, et al. Dental Rehabilitation of a Child with Ectodermal Dysplasia: A Case Report. Int J Clin Pediatr Dent 2019;12(4):362-365.