Journal of Contemporary Dental Practice最新文献

{"title":"Effectiveness of Novel Calcium Hydroxide Nanoparticles in the Different Vehicles against Mixed-species Biofilm: An <i>In Vitro</i> and <i>Ex Vivo</i> Study.","authors":"Parinthron Rattanakijkamol, Patarawadee Promta, Phenphichar Wanachantararak, Warat Leelapornpisid","doi":"10.5005/jp-journals-10024-3846","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3846","url":null,"abstract":"<p><strong>Aim: </strong>To evaluate the antimicrobial effectiveness of calcium hydroxide nanoparticles [(Ca(OH)]₂ NPs) with different vehicles against biofilm, composed of <i>Enterococcus faecalis, Streptococcus gordonii</i>, and <i>Candida albicans</i>, <i>in vitro</i> and <i>ex vivo</i> tooth models.</p><p><strong>Materials and methods: </strong>The Alamar Blue assay was used to determine the minimum biofilm inhibitory concentration (MBIC), while the minimum biofilm eradication concentration (MBEC) was assessed by colony counting. Multispecies biofilms were inoculated in 50 root blocks with different medicaments (each <i>n</i> = 10). The colony-forming unit then assessed the viable cell counts. Morphological structures were analyzed with scanning electron microscopy (SEM).</p><p><strong>Results: </strong>The MBIC of all groups was 1:128 of primary concentration. The MBEC of Ca(OH)₂ NPs in all formulas was two times higher than Ca(OH)₂. Scanning electron microscopy analysis revealed biofilm disruption and debris clumping in both formulas, with the lowest viable cell count in Ca(OH)₂NPs.</p><p><strong>Conclusion: </strong>Calcium hydroxide nanoparticles in both formulas, especially the viscous formula, had the potential for antibiofilm activity.</p><p><strong>Clinical significance: </strong>Calcium hydroxide nanoparticles, particularly in a viscous formula, are effective in significantly reducing mixed-species biofilms, suggesting their potential as an improved alternative to conventional Ca(OH)₂ for endodontic treatment. How to cite this article: Rattanakijkamol P, Promta P, Wanachantararak P, <i>et al.</i> Effectiveness of Novel Calcium Hydroxide Nanoparticles in the Different Vehicles against Mixed-species Biofilm: An <i>In Vitro</i> and <i>Ex Vivo</i> Study. J Contemp Dent Pract 2025;26(3):265-272.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 3","pages":"265-272"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of Cortical Bone Thickness in Upper Central Incisors with Different Types of Buccopalatal Inclination: A CBCT Study.","authors":"Mario A Plaza-Serrano, Sandra L Robayo-Alvarado, Jhoana M Llaguno-Rubio, Luis E Arriola-Guillén","doi":"10.5005/jp-journals-10024-3833","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3833","url":null,"abstract":"<p><strong>Aim: </strong>The thickness of the alveolar bone restricts dental movements in orthodontics. This study evaluated cortical bone thickness surrounding the upper central incisors with different buccopalatal inclinations.</p><p><strong>Materials and methods: </strong>This cross-sectional study analyzed 318 maxillary tomographic volumes, assessing both maxillary central incisors of each volume, resulting in the measurement of 636 central incisors. The maxillary tomographic images were obtained using a Veraviewpocs Morita system with a field of view of 100 × 40 mm. The images were reconstructed using i-Dixel software. Two calibrated investigators performed all the measurements, focusing on bone thickness in four sectors: Cervical buccal, palatal, apical buccal, and apical palatal. Likewise, the inclination of the upper central incisors was categorized as labially inclined, adequately inclined, or palatally inclined in relation to the palatal plane. Statistical analysis included analysis of variance (one-way ANOVA) and multiple linear regression tests (<i>p</i> < 0.05).</p><p><strong>Results: </strong>A comparison of bone thicknesses around the upper central incisor, specifically cervical buccal, palatal, apical buccal, and apical palatal revealed similar values across all three groups categorized according to buccopalatal inclination. However, multiple linear regression analysis indicated that the change from either labially or palatally inclined to an adequately inclined position affects cervical buccal bone thickness, resulting in a decrease of 0.09 mm (<i>p</i> = 0.029).</p><p><strong>Conclusion: </strong>The thickness of the cortical bone in the four areas evaluated remained unchanged regardless of the buccopalatal inclinations of the upper central incisors. Although some changes in cervical buccal bone thickness were statistically significant, these changes are not clinically relevant.</p><p><strong>Clinical significance: </strong>Few studies have indicated that the inclination of the upper teeth can affect the thickness of the bone. If this parameter remains constant, orthodontists should consider these changes in their treatment plans. How to cite this article: Plaza-Serrano MA, Robayo-Alvarado SL, Llaguno-Rubio JM, <i>et al.</i> Evaluation of Cortical Bone Thickness in Upper Central Incisors with Different Types of Buccopalatal Inclination: A CBCT Study. J Contemp Dent Pract 2025;26(3):239-243.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 3","pages":"239-243"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Monitoring Patient Anxiety, Pain, and Physiological Responses during Root Canal Treatment: An Observational Study.","authors":"Pragya Pandey, Neha Jasrasaria, Ramesh Bharti, Rishabh Pandey, Shruti Singh","doi":"10.5005/jp-journals-10024-3828","DOIUrl":"10.5005/jp-journals-10024-3828","url":null,"abstract":"<p><strong>Aim: </strong>This study aimed to assess physiological changes [heart rate (HR) and oxygen saturation (SpO₂)] and pain perception in patients undergoing single-visit root canal treatment (RCT) and examine correlations with dental anxiety.</p><p><strong>Materials and methods: </strong>This observational study included 76 adults who needed to undergo single visit root canal treatment (RCT). Patient anxiety was assessed preoperatively using the modified dental anxiety scale (MDAS), with pain levels measured on the visual analog scale (VAS). HR and SpO₂ were monitored at six stages: Preoperative, local anesthesia, access cavity preparation, working length determination, biomechanical preparation, and 10 minutes post-procedure. Statistical analysis included descriptive statistics, Pearson's correlation, and Mann-Whitney tests.</p><p><strong>Results: </strong>The study included 76 patients, aged 20-55 years (mean age = 35.6 ± 8.9 years). Moderate pain (VAS 4-6) was reported by 47.36% of patients. Results indicated significant elevations in HR specifically during local anesthesia administration (93.9 ± 8.2) and drilling (94.7 ± 8.07), particularly in patients with moderate anxiety and severe pain levels (<i>p</i> < 0.05). Oxygen saturation levels remained stable across all procedural stages. Additionally, patients with prior negative dental experiences exhibited significantly elevated anxiety scores (<i>p</i> = 0.018). A moderate positive correlation was observed between anxiety levels and HRs.</p><p><strong>Conclusion: </strong>The study indicates that dental anxiety significantly influences HR during RCT, with patients exhibiting higher anxiety levels experiencing greater physiological stress.</p><p><strong>Clinical significance: </strong>Implementing anxiety management strategies and monitoring vital signs could enhance patient comfort and safety during RCT, particularly in individuals with prior negative dental experiences. How to cite this article: Pandey P, Jasrasaria N, Bharti R, <i>et al.</i> Monitoring Patient Anxiety, Pain, and Physiological Responses during Root Canal Treatment: An Observational Study. J Contemp Dent Pract 2025;26(3):244-249.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 3","pages":"244-249"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Continuous Chelation on Physicochemical Properties of Dentin: A Systematic Review.","authors":"Kritheka Kumaresan, Lokhasudhan Govindaraju, Mathan Rajan Rajendran","doi":"10.5005/jp-journals-10024-3839","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3839","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Aim and background: &lt;/strong&gt;This systematic review aimed to evaluate and summarize the existing literature on the effect of continuous chelation on the physicochemical characteristics of root canal dentin.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Methodology: &lt;/strong&gt;This systematic review followed the PRISMA guidelines, and electronic databases such as PubMed, Cochrane, Lilacs, and Google Scholar were searched for articles, published from June 2013 to October 2024. The PICOS guidelines followed were: Population (P) - Root Canal Dentin; Intervention (I) - Continuous Chelation (Sodium hypochlorite and HEBP); Comparison (C) - Sequential irrigation protocol (Sodium hypochlorite and EDTA); Outcome (O) - Physical and Chemical Properties of root dentin (&lt;i&gt;physical properties:&lt;/i&gt; root dentin roughness, microhardness, erosion, fracture resistance, flexural strength, push-out bond strength of fiber posts, and ultrastructural characteristics; &lt;i&gt;chemical properties:&lt;/i&gt; mineral content, collagen degradation, and compositional changes); Study design (S) - &lt;i&gt;In vitro&lt;/i&gt; studies. Data extracted from the included articles were author, publication year, place of study, the sample size, the concentration and duration of continuous chelation and sequential irrigation protocol, the impact of these variables on the physicochemical properties of root dentin, the results obtained, and the study's observations and limitations. Studies were qualitatively assessed utilizing Joanna Briggs Institute (JBI) tool.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;Out of 92 articles, 88 articles were screened after duplicates were excluded. On application of selection criteria, eight were included in the systematic review, of which, six studies focused solely on the effect of continuous chelation on physical properties, while two studies addressed effects on both physical and chemical properties of dentin. Root dentin roughness was evaluated by two studies, microhardness in two studies, erosion in one study, fracture resistance in three studies, flexural strength in one study, push-out bond strength of fiber posts in one study, and ultrastructural characteristics in one study. Mineral content and crystalline phase were evaluated in one study while chemical composition and collagen degradation were evaluated in another study. The included studies demonstrated an overall low risk of bias.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusion: &lt;/strong&gt;Within the limitations of this systematic review, it can be concluded that continuous chelation has a minimal effect on the physicochemical properties of dentin when compared to sequential chelation.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Clinical significance: &lt;/strong&gt;Continuous chelation is favorable to the physicochemical properties of dentin. As it exerts less effect on dentin when compared to sequential chelation, it may contribute to the long-term survival of the root canal-treated tooth. How to cite this article: Kumaresan K, Govindaraju L, Rajendran MR. Effect of Continuous Chelation on Physicochemical","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 3","pages":"321-330"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmental Impact of Dental Waste: A Survey-based Analysis of Waste Segregation and Recycling Practices in Dental Clinics.","authors":"Hanen Boukhris, Hajer Zidani, Aymen Bh Khalifa, Ghada Bouslema, Souha B Youssef","doi":"10.5005/jp-journals-10024-3845","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3845","url":null,"abstract":"<p><strong>Aim: </strong>The aim of this study was to assess biomedical waste management practices in dental clinics and explore the sustainability of strategies employed to minimize environmental impact while ensuring public health safety.</p><p><strong>Materials and methods: </strong>A cross-sectional descriptive study was conducted among dental professionals in Tunisia from March 3, 2023, to March 10, 2024. A total of 50 clinics participated in the study. Data were collected using a survey questionnaire consisting of 30 questions, which were divided into three sections: Knowledge (10 questions), attitudes (10 questions), and practices (10 questions). The survey was conducted in person and was complemented by an observation checklist during waste audits in selected dental clinics. The data were recorded and statistically analyzed using the statistical software SPSS, version 20.0.</p><p><strong>Results: </strong>The study involved 120 dental professionals across 50 clinics. The results revealed that 68% of the participants demonstrated basic awareness of waste segregation, but only 42% followed consistent waste management protocols. The study identified challenges in sustainable practices, including limited training (only 30% of the participants had received formal waste management training) and insufficient infrastructure (44% of clinics lacked proper segregation bins). Environmental concerns were raised regarding incineration practices, with 50% of clinics continuing to use this method despite its environmental impact.</p><p><strong>Conclusion: </strong>This study provides an overview of biomedical waste management practices in dental clinics, revealing variations in awareness, implementation, and available resources.</p><p><strong>Clinical significance: </strong>These findings are crucial for policymakers and educators working to promote sustainable biomedical waste management in dental settings. By addressing knowledge gaps and implementing eco-friendly practices, the dental sector can reduce its environmental footprint while maintaining high public health standards. How to cite this article: Boukhris H, Zidani H, Khalifa ABH, <i>et al.</i> Environmental Impact of Dental Waste: A Survey-based Analysis of Waste Segregation and Recycling Practices in Dental Clinics. J Contemp Dent Pract 2025;26(3):250-256.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 3","pages":"250-256"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scrub Color Affects Perceived Professionalism of Dental Hygienists: A Cross-sectional Study.","authors":"Connor Hendry, Nouf Maayta, Lourd Nafea, Vania Aranda, Udochukwu Oyoyo, So Ran Kwon","doi":"10.5005/jp-journals-10024-3836","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3836","url":null,"abstract":"<p><strong>Aim: </strong>To assess the impact of dental hygienists' scrub colors on patient perceptions of professionalism, with a focus on knowledge, skills, and caring.</p><p><strong>Materials and methods: </strong>A cross-sectional study was conducted using an anonymous survey distributed between November 2024 and January 2025, targeting patients and visitors aged 18 years and older. The study recruited 483 participants across three age-groups (18-30, 31-60, and 61and above). The survey included 16 questions, with two assessing demographic information and 14 evaluating perceptions of dental hygienists based on scrubs color. Participants viewed images of one male and one female dental hygienists wearing scrubs in five colors: Pink, burgundy, teal, navy, and black. They were asked to select the most and least knowledgeable, skilled, and caring hygienist based on scrub color and indicate their preferred provider. Data were analyzed using Pearson's Chi-square tests, Fleiss' and Light's Kappa statistics. Statistical significance was set at <i>p</i> < 0.05.</p><p><strong>Results: </strong>Findings revealed that scrub color significantly influenced patient perceptions. Navy scrubs were the most preferred for both male (39.7%) and female (38.1%) dental hygienists, followed by teal and black. Navy scrubs were associated with knowledge and skill, while pink was linked to caring traits but perceived as less competent. Black scrubs were rated least caring. There was no significant difference in provider preference based on gender (male clinician: <i>p</i> = 0.168; female clinician: <i>p</i> = 0.544). However, there was a statistically significant difference in preferred provider frequency by age category (<i>p</i> < 0.001).</p><p><strong>Conclusion: </strong>The color of scrubs plays a crucial role in conveying professionalism. The preference for navy blue scrubs suggests that color plays a crucial role in establishing trust and perceived competence in dental settings.</p><p><strong>Clinical significance: </strong>The influence of scrub color on the professionalism of dental hygienists is a crucial factor that must be addressed to identify the most favorable color for fostering trust and perceived competence in dental settings. How to cite this article: Hendry C, Maayta N, Nafea L, <i>et al.</i> Scrub Color Affects Perceived Professionalism of Dental Hygienists: A Cross-sectional Study. J Contemp Dent Pract 2025;26(3):223-228.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 3","pages":"223-228"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring Knowledge, Attitude, and Practices of Dentists in Saudi Arabia on Medicolegal Aspects of Preoperative Radiographs: A Cross-sectional Study.","authors":"Haytham Jaha","doi":"10.5005/jp-journals-10024-3838","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3838","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Aim: &lt;/strong&gt;The aim of the study is to investigate the knowledge, attitudes, and practices of dentists in Saudi Arabia concerning the medicolegal implications of preoperative radiographs.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Materials and methods: &lt;/strong&gt;A cross-sectional survey targeting dentists was conducted using an online questionnaire (Google Forms) disseminated via online dental forums, professional associations, and social media platforms frequented by dentists in Saudi Arabia. 300 dentists participated in the survey. The questionnaire consisted of 28 questions divided into four main sections (6, 8, 6, 8, respectively)-demographics; professional background; knowledge and practices that explored the respondents' understanding of medicolegal concepts, their frequency of obtaining preoperative radiographs, and their familiarity with the ethical implications surrounding these practices and ethical and legal considerations that examined views on the importance of patient education, informed consent, and the role of ethics in mitigating legal risks. Data was analyzed using SPSS software version 20. Descriptive statistics in the form of numbers and percentages were calculated. The item mean score and the overall mean score for the responses were calculated.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;The 300 respondents participated in the study we got a 100% response rate. The majority were male (55.3%) and were Saudi residents (94.3%). Most respondents rated their understanding of medicolegal complications regarding preoperative radiographs as fair (35.3%), while 19.3% rated it as poor. Only 62.4% viewed preoperative radiographs as very or extremely important in preventing malpractice claims, and 63.7% considered them crucial evidence in legal disputes. Additionally, 65% felt that fear of malpractice influences unnecessary radiographs, and 75.0% agreed that patient education could reduce malpractice risks. Notably, 85.7% had not received formal training on the legal implications of radiographs, highlighting an educational gap. Confidence in justifying radiographic practices to legal professionals varied, with 58.4% reporting moderate to high confidence, while 54.7% felt uncomfortable defending the decision not to take radiographs when typically recommended.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusion: &lt;/strong&gt;Many dentists lack sufficient knowledge and confidence about pertinent legal principles, even if they acknowledge the importance of preoperative radiographs in lowering malpractice claims and acting as legal proof.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Clinical significance: &lt;/strong&gt;This study underscores the pressing need for improved training, policy development, and ethical standards to address the gaps in the medicolegal understanding of radiographic practices among dentists in Saudi Arabia. The integration of medicolegal education into dental training is essential for equipping dental professionals to navigate their legal responsibilities effectively. How to cite this article: Jaha H. Explorin","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 3","pages":"277-284"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Full-coverage Porcelain-fused-to-metal Crown with Guided Access for Future Endodontic Treatment: A Comparative Pilot <i>In Vitro</i> Study.","authors":"Mohammed Mashyakhy, Hafiz Adawi, Abdulaziz Abu-Melha, Elham Khudhayr, Rafif Bakri, Taif Kameli, Khalid Moashy, Hemant Chourasia, Hitesh Chohan","doi":"10.5005/jp-journals-10024-3842","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3842","url":null,"abstract":"<p><strong>Aim: </strong>This pilot study introduces a novel design concept for full-coverage porcelain-fused-to-metal (PFM) crowns, incorporating guided access features to facilitate future endodontic treatment and overcome difficulties associated with access cavity preparation through crowns.</p><p><strong>Materials and methods: </strong>This <i>in vitro</i> study utilized 24 extracted molars (removed for periodontal reasons), divided into three groups: Group I (control) comprised natural teeth (<i>n</i> = 6); group II received conventional PFM crowns (<i>n</i> = 8); and group III (experimental) received guided PFM crowns (<i>n</i> = 10). The guided crown design involved preparing the teeth for standard PFM crowns, followed by taking a periapical X-ray to visualize the mesiodistal view and identify the pulp chamber. A mark was placed on the occlusal surface of the prepared tooth opposite the pulp chamber, and the technician replicated this mark on the crown during fabrication. A single general dentist prepared the access cavities for all groups, and two endodontists evaluated the samples based on three parameters: (a) time required for access cavity preparation, (b) quality of the access cavity, and (c) size of the access cavity. Data were analyzed using Statistical Package for Social Sciences software, with statistical significance set at <i>p</i> < 0.05.</p><p><strong>Results: </strong>The time required to reach and clean the pulp chamber was significantly different among the three groups (<i>p</i> = 0.011), with the guided PFM group taking less time than the conventional PFM group (7.63 ± 2.19 minutes compared to 11.52 ± 2.65 minutes), and no significant differences were noted between natural teeth and the experimental group (<i>p</i> = 1.000). Regarding the quality of the access cavity, it was acceptable among all three groups with no significant difference (<i>p</i> = 0.537), while the size of the access cavity in the guided PFM group was bigger than the other two groups with no significant difference.</p><p><strong>Conclusion: </strong>The guided PFM crown showed promise as a potential replacement for conventional PFM crowns, offering a faster and safer approach to root canal treatment.</p><p><strong>Clinical significance: </strong>This pilot study introduces a novel guided PFM crown design that reduces the time required for access cavity preparation while maintaining the quality of the access cavity comparable to natural teeth. The guided PFM crown offers a practical and cost-effective solution for clinicians, particularly in settings where advanced digital technologies like cone beam computed tomography (CBCT) and computer-aided design/computer-aided manufacturing are unavailable. How to cite this article: Mashyakhy M, Adawi H, Abu-Melha A, <i>et al.</i> Full-coverage Porcelain-fused-to-metal Crown with Guided Access for Future Endodontic Treatment: A Comparative Pilot <i>In Vitro</i> Study. J Contemp Dent Pract 2025;26(3):234-238.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 3","pages":"234-238"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Different Veneering Techniques on Mechanical Properties and Translucency of Zirconia Framework-veneer Ceramic Crowns.","authors":"Abdelrahman Gamal Sanad, Cherif Adel Mohsen, Mostafa Elhosseiny Mohamed","doi":"10.5005/jp-journals-10024-3837","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3837","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Aim: &lt;/strong&gt;The aim of this study is to assess the effect of veneering techniques on bond strength, fracture resistance (FR), and translucency of zirconia framework-veneer ceramic crowns.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Materials and methods: &lt;/strong&gt;Four commercially available glass ceramic materials were used in this study: IPS e.max CAD (Ivoclar Vivadent), IPS e.max Zirpress (Ivoclar Vivadent), IPS e.max Ceram powder (Ivoclar Vivadent), and IPS e.max Zir CAD Prime (Ivoclar Vivadent). The first three materials were used to fabricate veneering layer over the fourth material (zirconia frameworks) to create samples in the forms of crowns (core veneered with superstructure) to study the FR (&lt;i&gt;n&lt;/i&gt; = 30) and plates veneered with ceramic discs to study shear bond strength (SBS) and translucency parameter (TP) (&lt;i&gt;n&lt;/i&gt; = 60). A total of 90 samples were constructed. The samples were divided into three equal groups: Group A: CAD-ON Technique (&lt;i&gt;n&lt;/i&gt; = 30); group B: Press-over technique (&lt;i&gt;n&lt;/i&gt; = 30); and group C: Ttraditional layering technique (&lt;i&gt;n&lt;/i&gt; = 30). Each group is divided into three subgroups according to the type of test. Subgroup (1): Shear bond strength (&lt;i&gt;n&lt;/i&gt; = 10). Subgroup (2): Fracture resistance and subgroup (3) translucency (&lt;i&gt;n&lt;/i&gt; = 10). A universal testing machine (5ST; Tinius Olsen, England) was used to measure FR and SBS. A spectrophotometer was used to measure color parameters (L*, a*, b*) and total luminous transmittance (τ) of the specimens for calculation of TP. One-way analysis of variance (ANOVA) test combined with a &lt;i&gt;post hoc&lt;/i&gt; test was used to analyze the data (α = 0.05).&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;The mean FR was high for the CAD-ON technique (&lt;i&gt;N&lt;/i&gt; ± SD) (1723.80 ± 110.96) followed by the layering technique (1092.70 ± 181.35), and lowest for the press-over technique (820.80 ± 75.95). The difference between the groups was statistically significant (&lt;i&gt;p&lt;/i&gt;-value &lt; 0.05). The mean SBS values were also highest for the CAD-ON technique (MPa ± SD) (28.00 ± 1.96), followed by the layering technique (25.71 ± 0.79), and lowest for the press-over technique (20.80 ± 1.46). For TP, the press-over technique had the highest mean value (6.05 ± 0.32), followed by the layering technique (5.56 ± 0.27), and then CAD-ON technique (5.15 ± 0.33). A statistically significant difference was observed among the three techniques (&lt;i&gt;p&lt;/i&gt; &lt; 0.05).&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusion: &lt;/strong&gt;The file-splitting (CAD-ON) veneering technique shows higher FR and bonding strength. In contrast, veneering zirconia using the layering and press-over techniques resulted in samples with higher translucency compared to those veneered with the CAD-ON technique.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Clinical significance: &lt;/strong&gt;The clinical significance lies in the potential to enhance the longevity, esthetics, and overall performance of dental restorations. By understanding how various veneering techniques impact these factors, dental professionals can improve durabil","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 3","pages":"294-302"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Role of Periodontitis in Increasing Cognitive Decline in Alzheimer's Disease.","authors":"Nomikos Klonaris, Josue D Gonzalez Murcia, Shankargouda Patil, Claudia M Tellez Freitas","doi":"10.5005/jp-journals-10024-3847","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3847","url":null,"abstract":"<p><strong>Aim and background: </strong>Periodontal disease (PD), a chronic inflammatory disease of the gums, is characterized by periodontal pocket formation, bone resorption, and disruption of oral tissue integrity. This study aimed to review the literature on the potential pathogenic link between PD and Alzheimer's disease (AD), which focuses on the role of periodontal pathogens, among which is found <i>Porphyromonas gingivalis.</i> Methods: Recent studies and literature have linked PD to the development of systemic diseases, such as AD, a neurocognitive disorder affecting more than 6 million Americans. Given that both PD and AD are characterized by inflammation, it encourages interest in understanding how PD can influence the onset and progression of AD.</p><p><strong>Results: </strong>These pathogens contribute to systemic inflammation by increasing the secretion of proinflammatory cytokines, such as interleukin-1β, which in turn trigger beta-amyloid accumulation plaques, increasing kinase activity involved in the hyperphosphorylation of the tau protein, and lower concentrations of brain-derived neurotrophic factor, a neuroprotective protein against neurodegeneration.</p><p><strong>Conclusion: </strong>This review highlights a potential inflammatory feedback loop, where the immune response to oral pathogens exacerbates neurodegenerative processes in the brain, suggesting a significant intersection between PD and AD. Understanding this relationship and the mechanisms involved could open new therapeutic avenues for both diseases.</p><p><strong>Clinical significance: </strong>The findings collectively suggest that periodontal pathogens have the potential to influence the development of AD and perpetuate inflammatory responses leading to the cognitive decline observed in AD. How to cite this article: Klonaris N, Murcia JDG, Patil S, <i>et al.</i> The Role of Periodontitis in Increasing Cognitive Decline in Alzheimer's Disease. J Contemp Dent Pract 2025;26(3):311-320.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 3","pages":"311-320"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}