Article
Multidisciplinary Sciences
Luelak Lomlim, Jutharat Manuschai, Pichayaporn Ratti, Jiraporn Kara, Athip Sakunphueak, Pharkphoom Panichayupakaranant, Supawadee Naorungroj
Summary: The aim of this study was to synthesize and develop an alkynyloxy derivative of lawsone as an antifungal spray and investigate its effectiveness in reducing the viability of Candida albicans on PMMA specimens. The results showed that the spray containing the synthesized derivative had a good effect on the removal of C. albicans biofilms.
Article
Dentistry, Oral Surgery & Medicine
Andrea Lemos Falcao Procopio, Vanessa Soares Lara, Vinicius Carvalho Porto, Simone Soares, Maria Helena Fernandes, Vanessa Migliorini Urban, Karin Hermana Neppelenbroek
Summary: This study evaluates the effectiveness of an interim denture liner modified with antimicrobial agents for the treatment of denture stomatitis. The results show that adding nystatin and chlorhexidine to the liner is a promising treatment option, providing better results than conventional therapy. This non-invasive approach is easy for dentists to adopt and does not require patient compliance.
JOURNAL OF DENTISTRY
(2022)
Article
Chemistry, Physical
Avi Meirowitz, Arkadi Rahmanov, Eti Shlomo, Helena Zelikman, Eran Dolev, Nir Sterer
Summary: The study investigated the effect of different denture fabrication methods on Candida albicans adhesion to denture base samples. 3D printing increased microbial cell adhesion, while computerized milling decreased it compared to traditional heat curing. The results were associated with mucin adsorption levels rather than surface roughness.
Article
Medicine, General & Internal
Anne Schmutzler, Catalina Suzana Stingu, Elena Guenther, Reinhold Lang, Florian Fuchs, Andreas Koenig, Angelika Rauch, Sebastian Hahnel
Summary: Denture prostheses serve as a favorable environment for microorganisms to attach to their surfaces. This study investigated the interaction between denture base materials and microbial attachment, focusing on respiratory pathogens and Candida species. The results showed that respiratory microorganisms were found on all denture base materials, with a tendency for more pronounced accumulation on conventionally processed PMMA. Although no significant differences were observed among the materials, there was a significant increase in total bacterial counts after four weeks of denture use. Candida species were only detected after four weeks and not in all participants. These findings highlight the importance of maintaining good oral hygiene to prevent microbial colonization on denture surfaces.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Biotechnology & Applied Microbiology
Joel Oliveira Barreto, Francisca Bruna Stefany Aires do Nascimento, Said Goncalves da Cruz Fonseca, Leticia Serpa Sampaio, Cecilia Rocha da Silva, Joao Batista de Andrade Neto, Helio Vitoriano Nobre JUnior, Romulo Rocha Regis
Summary: The experimental solution containing Lippia sidoides essential oil showed antimicrobial activity against different pathogens, reduced the metabolic activity of C. albicans biofilm significantly, and caused cell wall damage at low concentrations, making it a potential alternative for the prevention and treatment of denture-induced infections.
Article
Chemistry, Physical
Salwa O. Bajunaid, Bashayer H. Baras, Abdulrahman A. Balhaddad, Michael D. Weir, Hockin H. K. Xu
Summary: This study aimed to investigate the effects of incorporating MPC into a new HIPA resin on the surface roughness, solution pH, and C. albicans biofilm adhesion to denture base. The results showed that incorporating 4.5% MPC led to a significant reduction in colony-forming units compared to the control group.
Article
Dentistry, Oral Surgery & Medicine
Jie Deng, Lingyan Ren, Yahui Pan, Hai Gao, Xiangfeng Meng
Summary: By synthesizing AgNPs in acrylic soft liner through in-situ method, this study effectively controlled the growth of Candida albicans, suggesting a potential strategy for treating and preventing denture stomatitis.
JOURNAL OF DENTISTRY
(2021)
Article
Materials Science, Multidisciplinary
Ayse Seda Ataol, Gulfem Ergun, Rukan Genc, Nurdan Sarac, Tuba Baygar, Aysel Ugur
Summary: This study investigated the effect of adding carbon nanoparticles on the bacterial adhesion, glucose sorption, weight change, and surface roughness of two types of denture liners. The results showed that the addition of 10% carbon nanoparticles to the soft denture liner group had the highest antibiofilm activity against C. albicans. However, there was no statistically significant effect on glucose sorption and surface roughness of the denture liner groups.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Salwa Omar Bajunaid
Summary: Denture stomatitis is a common oral infection caused by Candida albicans. Incorporating antimicrobial agents into denture acrylic resin materials has been found to be effective in preventing and treating this infection, but careful consideration is needed to avoid altering the properties of the base material.
Article
Dentistry, Oral Surgery & Medicine
Katarzyna Kresse-Walczak, Heike Meissner, Rene Mauer, Evelyn Trips, Klaus Boening
Summary: This pilot study aimed to test the removability of an artificial biofilm equivalent (ABE) and verify the reproducibility of the ABE testing protocol. The study found that the removability of ABE and the testing protocol were feasible and reproducible.
Article
Microbiology
Klaus-Peter Wojak, Gertrud F. Ungermann, Ichsan Ichsan, Emilia Gomez-Molero, Klaus Jung, Michael Weig, Friedemann Nauck, Dirk Ziebolz, Yvonne Graeser, Roland Nau, Uwe Gross, Bernd Alt-Epping, Oliver Bader
Summary: Elderly patients with multiple morbidities or medical treatments are more susceptible to fungal infections, particularly from azole-resistant yeasts like Candida glabrata. Factors such as age and denture-wearing influence the distribution of colonizing fungal species in the oral cavity, with non-albicans Candida species being more common in the elderly.
Article
Polymer Science
Reham B. Osman, Ghalia Khoder, Bahgat Fayed, Reena Arora Kedia, Yaser Elkareimi, Nawal Alharbi
Summary: The study aimed to compare the adhesion and biofilm formation of Candida albicans on different denture base materials fabricated conventionally, milled, and 3D-printed. The results showed that 3D-printed dentures had the highest candida biofilm formation, followed by conventionally fabricated dentures, and milled dentures had the lowest candida biofilm formation. The manufacturing technique influenced the surface topography and microbiological properties of the denture base resin material, with additive 3D-printing resulting in increased candida adhesion and rougher surface topography. In a clinical setting, patients wearing additively manufactured maxillary complete dentures are more susceptible to the development of candida-associated denture stomatitis.
Review
Microbiology
Pierre Le Bars, Alain Ayepa Kouadio, Octave Nadile Bandiaky, Laurent Le Guehennec, Marie-France de La Cochetiere
Summary: Denture-related Candida stomatitis is an inflammation of the oral mucosa caused by removable dentures. Candida species, particularly Candida albicans, play a significant role in this pathology by hijacking the immune system of the host and causing infection.
Review
Dentistry, Oral Surgery & Medicine
Anne Schmutzler, Angelika Rauch, Ina Nitschke, Bernd Lethaus, Sebastian Hahnel
Summary: The systematic review found that combining chemical and mechanical denture hygiene interventions is more effective than single cleaning approaches. Limited evidence is available regarding the impact of denture hygiene interventions on the properties of denture base materials.
JOURNAL OF EVIDENCE-BASED DENTAL PRACTICE
(2021)
Article
Infectious Diseases
Jason L. Brown, Tracy Young, Emily McKloud, Mark C. Butcher, David Bradshaw, Jonathan R. Pratten, Gordon Ramage
Summary: This study investigated the efficacy of different denture cleaning methods in reducing viable microorganisms in denture biofilms, and found that daily brushing with denture cleanser tablets was the most effective treatment.
Article
Dentistry, Oral Surgery & Medicine
Robert Bauer, Julian Zacher, Thomas Strasser, Martin Rosentritt
Summary: The study evaluated the performance and fracture load of resin anterior implant-supported interim fixed partial dentures (IFPDs), finding that these interim materials are sufficiently fracture resistant for the fabrication of implant-supported anterior IFPDs, expected to survive between 6 months and 2 years before failure. The stability of IFPDs depended on the type of material but not on the restoration design.
JOURNAL OF PROSTHETIC DENTISTRY
(2021)
Article
Engineering, Biomedical
Martin Rosentritt, Michael Behr, Thomas Strasser, Alois Schmid
Summary: The study aimed to establish a splint testing method and compare the insertion and removal performance of dental splints in-vitro. Results showed significant differences in insertion/pull-off cycles between different materials, with deep-drawn, cast, and combined systems performing better compared to printed or milled splints.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Dentistry, Oral Surgery & Medicine
Verena Hickl, Thomas Strasser, Alois Schmid, Martin Rosentritt
Summary: The study investigated the color, gloss, and roughness changes of splint materials after storage in liquids and toothbrush simulation. The results showed that contact with staining solutions/toothbrush simulation altered the color, gloss, and roughness. The material and storage time had the most significant impact on these changes. Storage and toothbrushing resulted in visible discoloration and decreased gloss values of the splint materials.
CLINICAL ORAL INVESTIGATIONS
(2022)
Article
Dentistry, Oral Surgery & Medicine
Martin Rosentritt, Christina Huber, Thomas Strasser, Alois Schmid
Summary: The study focused on testing experimental rapid prototyping materials for occlusal splints made from Urethandimethacrylate (UDMA) and Urethanmethacrylate (UMA). Mechanical properties were significantly influenced by changes in the UDMA:UMA ratio, with increased amounts of UMA correlating with a decrease in flexural strength, modulus of elasticity, hardness, and wear resistance. Optic properties showed minor influence from UMA content and aging, while gloss was partly influenced by the UDMA:UMA ratio and water storage. Mean survival rates for cyclic pull-off and insertion testing ranged from 2537 to 23,857 cycles, with a correlation observed between the amount of UMA and survival rates. The addition of up to 25% UMA showed promising results, complying with clinical standards and delivering acceptable results in the cyclic pull-off and insertion test.
Article
Engineering, Biomedical
Johann Wulff, Alois Schmid, Christina Huber, Martin Rosentritt
Summary: The study found that the number of loading cycles that additively manufactured splint specimens can withstand depends on the type of material, cleaning, and post-polymerisation. Therefore, the materials, cleaning, and post-polymerisation of additive manufacturing processes should be matched to improve the dynamic loading performance of splint materials.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Martin Rosentritt, Sebastian Hahnel, Sibylle Schneider-Feyrer, Thomas Strasser, Alois Schmid
Summary: The study analyzed the differences in hardness and energy-converting properties of CAD/CAM resin-based composites using instrumented indentation testing. Significant differences were found between the materials, indicating that some materials may have superior stress-breaking capabilities.
APPLIED SCIENCES-BASEL
(2022)
Article
Medicine, General & Internal
Max L. Poeppel, Martin Rosentritt, Richard Sturm, Florian Beuer, Jeremias Hey, Alois Schmid, Franziska Schmidt
Summary: The study shows that color-gradient multilayer zirconia materials and new strength-gradient zirconia materials with similar yttria levels in the basal layers exhibit comparable mechanical properties and are suitable for anterior FDPs.
JOURNAL OF CLINICAL MEDICINE
(2022)
Article
Dentistry, Oral Surgery & Medicine
Karin Schnitzhofer, Angelika Rauch, Michael Schmidt, Martin Rosentritt
Summary: This study investigated the impact of occlusal contact situation and occlusal adjustment on wear, roughness, and fracture force of molar crowns. The results showed that resin composite crowns had higher wear area and depth, as well as lower fracture forces. Adjusted crowns exhibited increased wear areas and depths. For zirconia crowns, the adjustment resulted in greater wear area and depth, as well as lower fracture forces. These findings emphasize the importance of adapting occlusal design and adjustment to improve the performance and stability of zirconia and resin composite crowns.
JOURNAL OF DENTISTRY
(2023)
Article
Dentistry, Oral Surgery & Medicine
Thomas Strasser, Markus Wertz, Andreas Koenig, Torsten Koetzsch, Martin Rosentritt
Summary: The objective of this study was to compare the composition, microstructure, and mechanical strength of current multilayer zirconia blanks. Bar-shaped specimens were made from different multilayer zirconia blanks, and the microstructure and crystal structure were analyzed using scanning electron microscopy and X-ray diffraction. The results showed significant differences in flexural strength and grain size between the different layers. The findings suggest that the milling position in the blanks should be considered when using multilayer zirconia as a restorative material.
Article
Engineering, Biomedical
Martin Rosentritt, Angelika Rauch, Sebastian Hahnel, Michael Schmidt
Summary: The purpose of this study was to compare the in-vitro performance and wear behavior of additively or subtractively fabricated resin-based composite molar crowns for temporary and permanent application. The results showed that both temporary and permanent molar crowns, regardless of whether they were additively or subtractively manufactured, provided acceptable in-vitro performance and wear stability.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Chemistry, Physical
Joerg Baechle, Cordula Merle, Sebastian Hahnel, Martin Rosentritt
Summary: The microbiological behavior of dental polymer materials is crucial to ensure the success of dental restorations. This study investigated the adhesion of bacteria on dental polymers as a function of manufacturing techniques and different polishing protocols. The results showed that surface roughness and polishing significantly influenced bacterial adhesion, with horizontally printed materials showing less adhesion compared to vertically printed ones.
Article
Dentistry, Oral Surgery & Medicine
Martin Rosentritt, Dirk Bollin, Michael Benno Schmidt, Angelika Rauch
Summary: This study investigated the stability and wear of tooth-supported zirconia single crowns with micro-layering in vitro. The results showed that the micro-layering technique provided good stability and wear performance, comparable to conventional ceramic veneering systems.
JOURNAL OF DENTISTRY
(2023)
Article
Medicine, General & Internal
Angelika Rauch, Wendy Heinzmann, Martin Rosentritt, Sebastian Hahnel, Michael Benno Schmidt, Florian Fuchs, Andreas Koenig
Summary: This study aimed to investigate the in-vitro aging and fracture resistance of implant-supported molar crowns (iSCs) with a CAD/CAM resin composite veneer structure. The results showed that the choice of framework material significantly influenced the fracture resistance, while the choice of veneering material did not have a significant impact.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Materials Science, Ceramics
Thomas Strasser, Alois Schmid, Christina Huber, Martin Rosentritt
Summary: This study investigated the in vitro performance of 4-unit fixed partial dentures (FPDs) made from different types of zirconia blanks. The results showed that the positioning within multilayer blanks had a slight effect on the fracture force. The study suggests that multilayer, 3Y-TZP-A, 3Y-TZP, and 4Y-TZP are suitable for clinical applications of 4-unit molar FPDs, while the use of 5Y-TZP may be problematic.
CERAMICS-SWITZERLAND
(2022)
Article
Dentistry, Oral Surgery & Medicine
Benedikt C. Spies, Fei Zhang, Christian Wesemann, Maoyin Li, Martin Rosentritt
