Polyetheretherketone (PEEK), a thermoplastic polymer from the polyaryletherketone (PAEK) family, is increasingly used in dental biomedical applications because of its bioinert properties. This comprehensive review examines PEEK's suitability as a dental implant fixture and other related prostheses, focusing on its mechanical stability, chemical resistance, and compatibility with human bone. PEEK's ability to distribute and transmit occlusal forces to surrounding bone, along with its aesthetic advantages, make it a promising implant material that outperforms titanium and zirconia. PEEK has been successfully employed in various dental implantology applications, including implant fixtures, abutments, scan bodies, abutment screws, and implant-supported superstructures such as frameworks, crowns, and bridges, as well as overdenture attachment components. As a dental implant fixture, PEEK has undergone several modifications to enhance its surface, mechanical, and biological properties. PEEK exhibits comparable mechanical strength to other materials but offers advantages such as reduced production times and costs, improved toughness, and recyclability. Its non-interference with MRI and CBCT enhances diagnostic capabilities, while bioactive substances like hydroxyapatite further enhance its dental applications. Several manufacturing methods are available, each with specific advantages and limitations. Computer Numerical Control (CNC) milling is commonly used in dental labs but leads to material waste and tool wear challenges. Advances in micro-milling and cutting tool technology enable finer detail in PEEK parts. Additionally, 3-D printing is emerging as a promising technology for more precise and efficient dental part production. This review aims to update the current knowledge about PEEK applications, modifications, and manufacturing in the field of dental implantology. Moreover, it explores the challenges and suggests future research directions for optimising PEEK's bioactivity and stress distribution.

Effective alveolar and jaw bone regeneration remains a clinical challenge, and the added value of incorporating human dental pulp stem cells (hDPSCs) or stem cells from exfoliated deciduous teeth (SHED) into scaffolds over traditional cell-free approaches has not been systematically evaluated in vivo, limiting evidence-based advancements in regenerative dental therapies. This review aimed to evaluate the outcomes of human dental pulp stem cells in conjunction with scaffolds for the regeneration of alveolar and jaw bone. This systematic review followed PRISMA guidelines and used the PICO framework. A comprehensive search was conducted in PubMed, Scopus, Embase, Web of Science, the Cochrane Library, and Google Scholar through April 2025, focusing on studies using human dental pulp stem cells and scaffolds for alveolar and jaw bone regeneration in animal models. Inclusion criteria were restricted to English-language in vivo trials that compared cell-free scaffolds with those incorporating hDPSCs or SHED in conjunction with scaffolds. Risk of bias was assessed with a modified CAMARADES tool. The review is registered with PROSPERO (CRD420250655330). Nineteen studies fulfilled the inclusion criteria. Among these, 8 studies concentrated on bone regeneration using SHED, while 11 investigated DPSCs obtained from permanent teeth. The findings revealed that scaffolds seeded with DPSCs achieved new bone formation rates ranging from 0.2 to 70.5%, whereas scaffolds seeded with SHED exhibited 32.64% and 40% regeneration rates. Integrating human DPSCs or SHED with scaffolds consistently improves alveolar and jaw bone regeneration over scaffold-only approaches, enhancing bone volume, density, osteogenesis, and angiogenesis and showing strong potential for future clinical use. Not applicable.

Objectives: There is a lack of data regarding the hygiene practices and sources of care among individuals in Yemen who wear removable complete and partial dentures. The purpose of this study was to explore the behaviors, hygiene habits, and sources of care information among patients who utilize complete and partial dentures in Yemen.Materials and Methods: A descriptive cross‐sectional research design was utilized, and a sample of 217 consecutive participants who wore removable complete and/or partial dentures were enlisted. A questionnaire was employed to collect data on demographic information, educational attainment, denture habits, denture cleaning practices, and encountered difficulties. Statistical analysis was conducted using SPSS software, and significance was determined using chi‐square tests, with a significance level of .05.Results: The data analysis revealed that a majority of the participants were male (72.4%) and had an average age of 65.14 years. Fifty‐three percent of the participants wore partial dentures, while 34.6% wore complete dentures. Only 6.5% of the participants wore both complete and partial dentures, and 6% wore overdentures. The majority of participants (88.47%) had dentures made of acrylic material. Additionally, 43% of participants wore dentures while sleeping, and 61.3% stored their dentures in dry places without a water‐filled container when not in use. The most commonly reported cleaning methods were water only (24.4%), followed by water and soap (19.4%). Furthermore, a large portion of the participants (59.4%) received denture care information from dentists. However, the majority (59%) did not visit a dentist for regular denture maintenance or any denture‐related issues. The data analysis did not reveal any significant association between age or education level and denture cleaning methods.Conclusion: This cross‐sectional survey provides insight into the hygiene knowledge and practices of removable denture wearers in Yemen. The findings underscore the necessity for enhanced oral hygiene education and awareness within this population. The study offers valuable insights for oral health professionals to design targeted interventions and educational initiatives aimed at promoting proper denture care and maintenance. These efforts have the potential to enhance the oral health and overall well‐being of removable denture wearers.

Objectives: This study aimed to evaluate the maximum bite force (MBF) and satisfaction of patients restored with implants, combined tooth‐implants, and teeth‐supported monolithic zirconia fixed dental prostheses (FDPs).Materials and Methods: Thirty partially edentulous patients in need of three units of FDPs in their mandibular posterior region were divided into three equal groups (n = 10) as follows: Group‐1 patients received two implants for each at the second premolar and second molar regions, Group‐2 patients received one implant for each at the second molar region, and Group‐3 patients with missing lower first molar. All the restorations were constructed from monolithic zirconia. Patients were evaluated 1 week after placement of restorations (baseline) and then after 6, 12, and 24‐month intervals for MBF using force transducer occlusal force meter and satisfaction (function, esthetic, and overall satisfaction) using a visual analog scale.Results: The mean MBF for Group 1 was higher than Group 2 (p = .044) but not that of Group 3 (p = .923). Additionally, Group 3 displayed a higher MBF than Group 2, although this difference was not statistically significant (p = .096). Concerning patient satisfaction, all study groups reported high levels of satisfaction across all satisfaction elements, and no significant differences were observed between the groups.Conclusion: Within the limitations of this study, it can be concluded that Group 1 gives comparable anticipated treatment outcomes as Group 3 concerning biting force and patient satisfaction. However, Group 2 gives comparable satisfaction results with biting force value within the normal range; thus, it might be used as a treatment option in a specific situation.

Endodontically treated teeth often face challenges in maintaining structural integrity, particularly when restored with MOD cavities. This systematic review aimed to evaluate the mechanical behavior of endodontically treated premolar and molar teeth with MOD cavities, restored with horizontal posts and composite materials, compared with alternative restorative approaches such as fiber-reinforced composites and indirect restorations. A comprehensive search was conducted in December 2024 across various databases, including PubMed, Scopus, Web of Science, and Google Scholar. All studies that examined the application of horizontal posts in posterior endodontically treated teeth compared to other restorative methods were included, and manual searches of included studies and associated scientific websites were performed. The meta-analysis was accomplished through the Review Manager (RevMan 5.4) of the Cochrane Collaboration. The web search yielded 718 records, and 1 was added from the manual search. Following the PRISMA guidelines, 26 studies were ultimately included in this review. Horizontal posts in endodontically treated teeth significantly improved fracture resistance compared with untreated MOD cavities and many restorative methods, though they did not match sound teeth. Combining horizontal posts with materials like polyethylene fiber Ribbond or nanohybrid composites achieved fracture resistance comparable to sound teeth, while finite element analyses showed reduced stress concentrations. Horizontal posts also reduced non-restorable fractures compared to MOD cavities and bulk-fill composites, highlighting their mechanical advantage, especially when paired with advanced composites. The insertion of horizontal posts significantly increased the fracture resistance of endodontically treated premolars and molars compared to composite restorations. Notably, fracture resistance levels were comparable to those observed in teeth restored with glass-fiber-reinforced composite and indirect ceramic restorations. However, there was no evident benefit from inserting root canal posts in enhancing fracture resistance. None of the restorative approaches achieved the fracture resistance levels of intact premolar and molar teeth. Proper support of ETTs with MOD cavities restored with direct composite restorations can preserve tooth integrity, particularly in case of large cavities. These supporting concepts are crucial in achieving complications-free restorations that maintain long-term clinical functionality.