Saudi Dental Journal最新文献

{"title":"Evaluating the efficacy and predictability of distalization protocols for maxillary molars in Class II treatment with clear Aligners: A narrative review","authors":"","doi":"10.1016/j.sdentj.2024.06.019","DOIUrl":"10.1016/j.sdentj.2024.06.019","url":null,"abstract":"<div><h3>Introduction</h3><p>Clear aligner therapy (CAT) has become a popular orthodontic treatment option for adolescent and adult patients for its aesthetic, patient’s comfort, and convenient features. It involves a programmed and simulated virtual planning, tracking, and quantifying of tooth movement to target positions. Over the years, the therapeutic scope of CAT has increased dramatically to include a wider range of malocclusions with the aid of orthodontic auxiliaries as adjunctive biomechanics. This narrative review aims at summarizing and evaluating current practices, efficacy and predictability of sequential distalization protocol for maxillary molars in class II treatment using CAT.</p></div><div><h3>Methods</h3><p>A systematic search for this review included electronic literature databases of MEDLINE via Pubmed, Web of Science, ProQuest and Embase to include all available published articles including systematic reviews, books, cases reports, and narrative literature reviews.</p></div><div><h3>Results</h3><p>Most published studies are retrospective examining small sample size. Current literature should be interpreted carefully as studies differ in their outcome measurement process and timing. Although reports show 2-3 mm of molar distalization is possible, a distinguish between bodily movement and molar tip back should be made. There is a discrepancy between computer-assisted predicted outcome and actual clinical outcome reported in literature.</p></div><div><h3>Conclusion</h3><p>Molar distalization using CAT is possible. However, randomised trials with large sample size are necessary to draw more definitive conclusion about its efficacy and predictability. Due to the discrepancy between computer-assisted predicted outcome and actual clinical outcome, case refinement and possible altered treatment duration should be discussed with the patient in the planning stage. Since the process of molar distalization using CAT involves undesirable reaction force, it is essential to reinforce anchorage with suitable auxiliaries like composite attachments, class II/III elastics, and TADs.</p></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 9","pages":"Pages 1184-1189"},"PeriodicalIF":1.7,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1013905224001962/pdfft?md5=ba30627615addc2b232c1b2847df0cae&pid=1-s2.0-S1013905224001962-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141403699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of cementation technique and cement thickness on the retention and amount of excess cement in implant-supported restorations","authors":"","doi":"10.1016/j.sdentj.2024.06.018","DOIUrl":"10.1016/j.sdentj.2024.06.018","url":null,"abstract":"<div><h3>Purpose</h3><p>To assess the amount of excess cement and the retentive strengths of two different cementation techniques (conventional cementation and practice abutment) using copings fabricated with three different cement thicknesses (20 μm, 35 μm, and 50 μm).</p></div><div><h3>Materials and methods</h3><p>Thirty zirconia copings were fabricated on screw retained abutments and randomly divided into three equal groups (n = 10) according to the cement thickness (20 μm, 35 μm, and 50 μm). Each group was cemented with tow cementation techniques. Cementation was performed with provisional cement (Temp-Bond). In the conventional cementation technique, cement was applied until each coping was approximately half filled, and the copings were subsequently placed on the implant–abutment assembly. Then, the copings were cleaned and cemented using the practice abutment cementation technique to remove excess cement prior to the process. Each technique was performed using copings with three different cement thicknesses (20 μm, 35 μm, and 50 μm). The specimens with the cemented copings were weighed on a high-precision analytical balance before and after removing the extruded cement, and the differences between the two measurements were calculated. Then, each specimen was subjected to a pullout test using a universal testing machine. The load required to dislodge the coping was recorded. The data were analyzed using two-way and one-way analysis of variance and independent sample t tests at a significance level of 0.05.</p></div><div><h3>Results</h3><p>The highest retention values were obtained for 20 μm cement thickness in the conventional technique and the practice abutment cementation technique. The amount of excess cement was the highest for the 50 μm cement thickness obtained for both cementation techniques, whereas the lowest mean values were recorded for the 20 μm cement thickness.</p></div><div><h3>Conclusion</h3><p>The conventional cementation technique is recommended over the practice abutment technique to increase the retention of crowns cemented with provisional cement. However, care must be taken to remove the extruded cement. A cement thickness of 20 μm is preferable for enhancing the retention of cemented crowns and for reducing the amount of excess cement when applying both conventional and practical abutment cementation approaches.</p></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 9","pages":"Pages 1203-1208"},"PeriodicalIF":1.7,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1013905224001950/pdfft?md5=d6a36f8957f05f5364bed53a9eef028c&pid=1-s2.0-S1013905224001950-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141410942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of microabrasion and bleaching on color and shear bond strength of simulated stained-remineralized caries lesions","authors":"","doi":"10.1016/j.sdentj.2024.06.014","DOIUrl":"10.1016/j.sdentj.2024.06.014","url":null,"abstract":"<div><h3>Purpose</h3><p>This study investigated the effects of bleaching and microabrasion on the color and shear bond strength (SBS) of stained-remineralized caries-like lesions (s-RCLs).</p></div><div><h3>Methods</h3><p>Human enamel specimens were demineralized, stained (coffee/tea), then remineralized (2% NaF and artificial saliva [AS]) to create s-RCLs. Specimens were randomly divided into five groups (n = 18): G1, demineralized/AS; G2, s-RCLs/AS; G3, s-RCLs/at-home bleaching (15% carbamide peroxide [CP)], 6 h/d×7)/AS; G4, s-RCLs/microabrasion (6.6% hydrochloric acid, [1min/3cycles]/AS; and G5, s-RCLs/microabrasion and at-home bleaching/AS. Color was spectrophotometrically measured at baseline, after demineralization, after staining, and after treatment. After two weeks, the SBS was tested using a universal testing machine. Outcomes were analyzed using ANOVA models followed by Tukey’s test (α = 0.05).</p></div><div><h3>Results</h3><p>The mean colors (ΔE) for demineralization and staining were significant (ΔE ≤ 5.9 and ≤14.4, respectively). G3 (ΔE 23.9) and G5 (ΔE 25.2) were significantly improved compared to G4 (ΔE 12.3). The SBS in G5 had the highest significant value (25.2 MPa), followed by G4 and G3 (21.5–20.6 MPa), which were significantly higher than G2 (16.8 MPa). G2, in turn, was more significant than G1 (10.9 MPa).</p></div><div><h3>Conclusion</h3><p>At-home bleaching (15% CP) for seven days eliminated and improved organic stains on RCLs. Faster results were achieved when combined with microabrasion. All surface treatments resulted in high SBS.</p></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 9","pages":"Pages 1190-1196"},"PeriodicalIF":1.7,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1013905224001822/pdfft?md5=797cd71bd619c9b0a2e746df14cea303&pid=1-s2.0-S1013905224001822-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141402485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fracture Resistance in Fibre-Reinforced Resin Composite Restorations in Deciduous and Permanent Molars: An Ex Vivo Study","authors":"","doi":"10.1016/j.sdentj.2024.06.017","DOIUrl":"10.1016/j.sdentj.2024.06.017","url":null,"abstract":"<div><h3>Aim</h3><p>The aim of this study was to compare the fracture resistance levels of restored deciduous teeth and permanent molars restored with different materials, including ultra-polyethylene fibre tape (Ribbond-Ultra), fibre-reinforced resin composite EverX posterior, fibre-reinforced flowable resin composite EverX Flow and bulk-fill flow restorative material (Tetric N-flow) in the posterior region.</p></div><div><h3>Methods</h3><p>We tested sixty-four caries-free human mandibular molars (32 deciduous molars and 32 permanent molars). Deep and wide Class I cavities were prepared in each tooth. The teeth were embedded in poly(methyl methacrylate) resin up to the cementoenamel junction, leaving the crown completely exposed. Oral temperature fluctuations were then simulated using two thousand thermocycling cycles, each lasting 30 seconds in the hot phase (approximately 35 °C). The loading rate for our force-fracture tests was set at 0.5 mm/min. Direct restorations were made using a spherical tip and applying the force perpendicular to the sample surface. Visual inspection of the fractured specimens, in combination with adhesive scanning electron microscopy (SEM) and finite element analysis (FEA), provided detailed insights into the failure modes and stress distribution at the restoration–tooth interface.</p></div><div><h3>Results</h3><p>Teeth restored with fibre-reinforced composite (EverX Posterior) had the highest fracture resistance, followed by fibre-reinforced flowable resin composite (EverX Flow). Teeth restored with the ultra- polyethylene fibre tape (Ribbond-Ultra), followed by the flowable bulk-fill composite (Tetric N-flow) had the lowest resistance. Statistical analysis revealed significant differences between the groups, except for EverX Posterior and EverX Flow. A predictive algorithm was also proposed for the likelihood of restoration failure.</p></div><div><h3>Conclusion</h3><p>Modern fibre-reinforced resin composites, such as EverX Posterior, effectively reinforce teeth against fractures, with success in both restored deciduous and permanent molars. Meanwhile, the use of polyethylene fibre tapes is less effective, and they involve a  time-consuming application.</p></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 9","pages":"Pages 1197-1202"},"PeriodicalIF":1.7,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1013905224001974/pdfft?md5=1fd9f83c10001df8319563eac690b6f9&pid=1-s2.0-S1013905224001974-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141400500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aesthetic problems related to dental implants in the aesthetic zone: A systematic review","authors":"","doi":"10.1016/j.sdentj.2024.06.010","DOIUrl":"10.1016/j.sdentj.2024.06.010","url":null,"abstract":"<div><h3>Background</h3><p>Patient satisfaction is a crucial indicator of a successful dental implant treatment. Attainment of an aesthetically acceptable final result is central to this success. Hence, the primary objective of this systematic review was to identify aesthetic concerns linked to dental implants within the aesthetic zone.</p></div><div><h3>Methods</h3><p>An electronic search was conducted on different databases such as PubMed, Medline, and Google Scholar using the key terms “tooth implant,” “anterior implant,” “dental implantation in the aesthetic zone,” and “aesthetic area implant. Following the elimination of duplicate articles and adherence to the inclusion criteria, 14 articles (five randomized clinical trials, four prospective clinical trials, four case series, and one pilot study) published between 2007 and 2020 were deemed suitable for this review.</p></div><div><h3>Results</h3><p>The selected studies highlighted several aesthetic issues, such as recession, marginal bone loss, gingival loss, and pink aesthetic scores related to dental implants placed in the aesthetic zone.</p></div><div><h3>Conclusion</h3><p>Addressing these challenges necessitates meticulous treatment planning, effective soft tissue management, regular follow-ups, patient education, expectation management, and collaborative efforts among specialists. A limitation of this systematic review is that it focused solely on studies conducted within a relatively short timeframe (2007–2020). However, it is essential to recognize that significant changes occurred in the treatment procedures and materials within the field during this period. These changes have resulted in notable variances in the treatment protocols utilized across studies, potentially affecting the generalizability of the findings.</p></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 9","pages":"Pages 1179-1183"},"PeriodicalIF":1.7,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1013905224001780/pdfft?md5=11459770a56eea8fc2104d7f4b29b12c&pid=1-s2.0-S1013905224001780-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141276511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Development and Utilization of an Electronic Assessment Software in Dental Education: A Comprehensive Evaluation","authors":"Ali Al Ehaideb ,&nbsp;Abdulmohsen Alfadley ,&nbsp;Maryam A. Alghilan ,&nbsp;Fathima F Farook ,&nbsp;Nora Alhazmi ,&nbsp;Elgene Castaneda ,&nbsp;Fatimah Al Qarni ,&nbsp;Muhammad Nadeem ,&nbsp;Lubna Alkadi","doi":"10.1016/j.sdentj.2024.05.010","DOIUrl":"https://doi.org/10.1016/j.sdentj.2024.05.010","url":null,"abstract":"<div><h3>Purpose/Objectives</h3><p>This article introduces the Key Electronic Assessment Platform (KEAP), an electronic-based assessment platform created in-house at the College of Dentistry (COD), King Saud bin Abdulaziz University for Health Sciences (KSAU-HS), Riyadh, Saudi Arabia. It highlights the platform’s integral value and demand within the educational system.</p></div><div><h3>Methods</h3><p>The article introduces the KEAP system design and architecture, describes its features, tests, and implementation in addition to its maintenance and security. It also presents the outcomes of KEAP utilization and the level of users’ satisfaction.</p></div><div><h3>Results</h3><p>The KEAP item bank has been expanded by more than 26,500 questions over the last four academic years and 1,255 exams have been administered. KEAP provides a highly secure structured framework for assessment planning, conduction, and evaluation. More than 90% of students and faculty are satisfied or very satisfied with their experience using the KEAP system indicating that it is well accepted by the end users.</p></div><div><h3>Conclusions</h3><p>The development of KEAP is based on contextual factors in COD, KSAU-HS with the aim of creating a process for assessment that is valid, efficient, standardized, and highly secure. KEAP’s design and successful implementation can provide a successful example of implementing electronic-based assessment in higher education.</p></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 7","pages":"Pages 1043-1050"},"PeriodicalIF":1.8,"publicationDate":"2024-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1013905224001664/pdfft?md5=52a9637f8dad7a0a5c82319d8aed094d&pid=1-s2.0-S1013905224001664-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141424151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Health status and visit reasons for children attending the Pediatric Dentistry department in damascus university, damascus, Syria: A retrospective study","authors":"Mohamad Bashier Almonaqel ,&nbsp;Ramah Eimad Makieh","doi":"10.1016/j.sdentj.2024.05.009","DOIUrl":"10.1016/j.sdentj.2024.05.009","url":null,"abstract":"<div><h3>Objectives</h3><p>This study aimed to discuss the health status and treatment requirements of children visiting the Department of Pediatric Dentistry at the Faculty of Dentistry.</p></div><div><h3>Materials and Methods</h3><p>A retrospective study included the records of patients attending the Department of Pediatric Dentistry, from November 29, 2021, to December 14, 2023.</p></div><div><h3>Results</h3><p>The study reviewed 2417 patient records, excluding 312. The majority of patients were primary school children aged 6 − &lt;12, primarily from Rif-Dimashq governorate. About 18 % displayed negative behavior during examinations, and 8 % had special health care needs. The most frequent type of disability was medical disabilities, followed by neurological disorders, with percentages of 40.2 % and 28.9 %, respectively. Dental caries were the primary reason for visits, with a mean of 3.94 ± 3.13. A negative association was found between the number of decayed teeth and the following: age classification, visit year, and Salviov-Tinawi scale. The percentage of males who came for cosmetic problems was higher than females at 57.2 % and 42.8 %, respectively.</p></div><div><h3>Conclusions</h3><p>The Department of Pediatric Dentistry at the Faculty of Dentistry, Damascus University, is a public dental clinic that is visited by patients from all governorates, providing free specialized treatments.</p></div><div><h3>Clinical relevance</h3><p>Unmet dental needs are a significant issue for both healthy children and those with special health care needs. The Department of Pediatric Dentistry serves as a research and educational center, offering comprehensive dental treatments to children from all socioeconomic backgrounds. Therefore, understanding the dental needs of children is crucial for providing effective support.</p></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 7","pages":"Pages 1025-1030"},"PeriodicalIF":1.8,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S101390522400155X/pdfft?md5=1c31923d29e75b261863513de92c978a&pid=1-s2.0-S101390522400155X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141130454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The association between oral health literacy and oral health-related behaviours among female adolescents in the Kingdom of Saudi Arabia: A cross-sectional study","authors":"Muneera Alzeer ,&nbsp;AlBandary AlJameel ,&nbsp;Kasper Rosing ,&nbsp;Esben Øzhayat","doi":"10.1016/j.sdentj.2024.05.007","DOIUrl":"10.1016/j.sdentj.2024.05.007","url":null,"abstract":"<div><h3>Objectives</h3><p>Oral health literacy (OHL) is suggested as an important denominator of oral health. This study aimed to identify ways to improve oral health by exploring the association between oral health literacy and oral health-related behaviours among female adolescents in the Eastern Province of the Kingdom of Saudi Arabia (KSA).</p></div><div><h3>Methods</h3><p>This cross-sectional study assessed OHL among 1,889 10th grade female students in the Eastern Province of the KSA. OHL was assessed using an Arabic version of the short version of the Health Literacy in Dentistry scale (A-HeLD-14). Self-reported socio-demographic information and oral health-related behaviours (toothbrushing, dental attendance, and sugary diet consumption) were also collected. The relationship between OHL and oral health-related behaviours was investigated using binary logistic regression, adjusted for socio-demographic information.</p></div><div><h3>Results</h3><p>The binary logistic regression analyses showed that poor OHL was significantly associated with infrequent toothbrushing (<em>p</em> &lt; 0.001) and irregular dental attendance (<em>p</em> = 0.005) but not with consumption of sugary diets. All A-HeLD-14 domains were significantly associated with infrequent toothbrushing, and the domains concerning access, receptivity, and financial barriers were significantly associated with irregular dental attendance. The highest odds ratios (ORs) for infrequent toothbrushing were found in the domains of receptivity (OR = 4.19) and understanding (OR = 3.85) and for irregular dental attendance in the financial barriers (OR = 1.61) and access (OR = 1.49) domains, followed by the receptivity domain (OR = 1.35).</p></div><div><h3>Conclusion</h3><p>Poor OHL was significantly associated with infrequent toothbrushing and irregular dental attendance. Interventions focusing on OHL are warranted to improve oral health-related behaviours and thereby oral health in the population. The aspects that seem most vital to target are improved access to dental care, including the reduction of<!--> <!-->economic barriers, as well as increased awareness of oral health in the population.</p></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 7","pages":"Pages 1035-1042"},"PeriodicalIF":1.8,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1013905224001536/pdfft?md5=0565fbc13e119641120fd88bbede5318&pid=1-s2.0-S1013905224001536-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141131787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Benign fibro-osseous lesions: A retrospective study of sixty-four cases from a single institute, Riyadh, Saudi Arabia","authors":"Asma Almazyad ,&nbsp;Adwaa Alhumaidan ,&nbsp;Manal AlSheddi","doi":"10.1016/j.sdentj.2024.05.005","DOIUrl":"10.1016/j.sdentj.2024.05.005","url":null,"abstract":"<div><h3>Objective</h3><p>Benign fibroosseous lesions (BFOLs) encompass a heterogenous collection of bone conditions characterized by replacing normal bone with fibro-collagenous tissue with osteoid or woven bone, and cementicles. Despite their clinical significance, the frequency of BFOLs in Saudi Arabia still needs to be assessed.</p></div><div><h3>Methods</h3><p>This retrospective study investigated the frequency and demographics of BFOLs in Riyadh, Saudi Arabia, by retrieving all cases recorded between January 1984 and January 2013 from a single Oral Pathology Laboratory archive.</p></div><div><h3>Results</h3><p>A total of 64 cases were classified as BFOLs, with a predominance in females (67.2 %) and a median age of 21.5 years. The most prevalent condition identified was fibrous dysplasia (45.31 %), followed by cemento-ossifying fibroma (26.56 %). There were significant sex differences between BFOLs, with a p-value of 0.03. FD was predominantly located in the maxilla (65.5 %), whereas COF was predominantly found in the mandible (82.3 %). Recurrence was observed in 17.2 % of patients with FD, in contrast to no reported recurrence in patients with COF.</p></div><div><h3>Conclusion</h3><p>This study represents the first exploration of BFOL frequency and demographics in Riyadh, Saudi Arabia, highlighting the need for further investigations to comprehensively understand the nature of these lesions in our population.</p></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 7","pages":"Pages 995-999"},"PeriodicalIF":1.8,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1013905224001512/pdfft?md5=ad31f9493081bc41a8384133aa5b61b7&pid=1-s2.0-S1013905224001512-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141025199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Downregulation of connexin 43 is crucial for basal cell alignment in ameloblastoma and odontogenic keratocyst","authors":"Ahmed Abdelaziz Mohamed Essa","doi":"10.1016/j.sdentj.2024.05.003","DOIUrl":"10.1016/j.sdentj.2024.05.003","url":null,"abstract":"<div><h3><em>Background</em></h3><p>The current study aims at investigating gap junctions which allow cells to connect with one another. Such process is essential for cell differentiation and the preservation of diverse cell functions. It is noticeable that connexin 43 (Cnx43) was differentially expressed in ameloblasts and odontoblasts in the processes of odontogenesis. Moreover, in carcinoma in situ (CIS) and oral squamous cell carcinoma (SCC), Cnx43 expression apparently thought to be a defining feature of the neoplastic state of squamous epithelial cells. <em>Aim</em>: Therefore, the study has postulated that Cnx43 may be involved in the pathophysiology of ameloblastoma and certain odontogenic cysts whose epithelial constituents exhibit squamous cells.</p></div><div><h3>Materials and methods</h3><p>In order to prove the foregoing hypothesis, the study explored the immunohistochemical profiles of Cnx43 in ameloblastoma as well as some odontogenic cysts to assess Cnx43 trafficking and its relation with characteristic tissue architectures of odontogenic lesions. <em>Results</em>: The study has concluded that Cnx43 was down regulated significantly in follicular ameloblastoma with obvious ameloblasts-like cell components as well as in odontogenic keratocyst with palisaded basal cells. Additionally, other patterns of ameloblastoma (plexiform and desmoplastic) and different types of odontogenic cysts manifest heavy trafficking for Cnx43. <em>Conclusion</em>: Finally, altered Cnx43 expression between various patterns of ameloblastoma and odontogenic cysts might be related to their pathogenesis and is responsible for their morphological diversity.</p></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 7","pages":"Pages 990-994"},"PeriodicalIF":1.8,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1013905224001494/pdfft?md5=633399b4fdc707d54e2b6b801553d175&pid=1-s2.0-S1013905224001494-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141036613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}