Niobium pentoxide addition to 3D printing resin-based composites Michaela dos Santos Kehl, Gabriela de Souza Balbinot, Vicente Castelo Branco Leitune, Alvaro Della Bona, Fabricio Mezzomo Collares Journal of the Mechanical Behavior of Biomedical Materials, 2026
Prevalence of Emotional Factors and Pain in Temporomandibular Disorder and Correlation With Different Diagnoses: A Cross-Sectional Study Gabriela Caovilla Felin, Cassiano Mateus Forcelini, Alvaro Della Bona Journal of Oral Rehabilitation, 2026 BackgroundTemporomandibular disorder (TMD) is a leading cause of orofacial pain, often associated with psychosocial factors that affect quality of life. Although these factors are well documented, the association with pain intensity and jaw function remains understudied.ObjectiveThis cross‐sectional observational study aimed to report the prevalence of emotional factors in patients with TMD and to correlate TMD with psychological factors, pain intensity and functional limitation of the jaw in a sample of the regional population.MethodsThis study used data from a TMD outpatient clinic in South America. Assessments included the DC‐TMD, chronic pain scale, GAD‐7 (anxiety), PHQ‐9 (depression), PHQ‐15 (somatic symptoms) and JFLS‐8 (jaw function) instruments. Sociodemographic data and the diagnosis of TMD were also reported. Data were statistically analysed using Kolmogorov–Smirnov, two‐tailed chi‐square, Fisher's exact, Mann–Whitney U, Kruskal–Wallis and Spearman's correlation coefficient tests (α = 0.05).ResultsFrom 190 patients (mean age 43.5), 78.4% were women, 31.5% had low education and 44.7% had a household income lower than US$ 500. The majority had TMD with pain and joint disorder. The overall chronic pain score was 63, indicating high pain intensity. Psychosocial scores and jaw limitations were mild. Women showed higher pain levels, more functional limitations, and elevated psychosocial scores.ConclusionPsychological factors did not differ significantly across TMD subtypes but were highly prevalent, especially in women.
Adaptation, Marginal, and Occlusal Quality of Monolithic Zirconia Crowns: Effect of the CAD/CAM Milling Protocol Indiarai Lavandoski Bringhenti, Andressa Restani Oliveira, Natalia Ulmi Ziglioli, Vitor de Trancoso de Britto, Alvaro Della Bona, et al. Journal of Esthetic and Restorative Dentistry, 2026 Objectives Variables related to CAD/CAM processing can affect the final quality of all‐ceramic crowns. This study aims to evaluate the effect of the milling protocol on the adaptation, marginal and occlusal quality of monolithic zirconia crowns. Materials and Methods Thirty‐nine monolithic zirconia crowns were produced using three CAD/CAM milling protocols ( n = 13): slow (S), normal (N), and fast (F). Adaptation (gap thickness) was evaluated using the replica technique, while marginal quality was assessed according to a severity scale. Occlusal quality was investigated qualitatively, using a stereomicroscope, and quantitatively, through an occlusal dimensional discrepancy analysis. Gap thickness and occlusal discrepancy data were analyzed with ANOVA and Tukey's test, and marginal quality with Kruskal–Wallis and Student–Newman–Keuls ( α = 0.05). Results Gap thickness in the marginal, gingival‐axial angle and axial regions was similar among groups. In the axio‐occlusal angle and occlusal region, group N presented the smallest gap. For marginal quality, group F had higher scores in the severity scale than groups N and S for the mesial and buccal regions. Group F crowns showed less refined occlusal anatomy. Yet, when crowns produced with S and F protocols were compared with N, the total mean discrepancy was similar. Conclusion The CAD/CAM milling protocol affected the adaptation, marginal, and occlusal quality of monolithic zirconia crowns.
Fatigue Resistance of Customized Implant-Supported Restorations Ulysses Lenz, Renan Brandenburg dos Santos, Megha Satpathy, Jason A. Griggs, Alvaro Della Bona Materials, 2025 The design of custom abutments (CA) can affect the mechanical reliability of implant-supported restorations. The purpose of the study was to evaluate the influence of design parameters on the fatigue limit of CA and to compare optimized custom designs with the reference abutment (RA). A morse-tapered dental implant, an anatomical abutment, and a connector screw were digitalized using microcomputed tomography. A cone beam computed tomography scan was obtained from one of the authors to virtually place the implant-abutment assembly in the upper central incisor. Ten design parameters were selected according to the structural geometry of the RA and the implant planning. A reverse-engineered RA model was created in SOLIDWORKS and was modified considering a Taguchi orthogonal array to generate 36 CAs with ±20% dimensional variations. Finite element analysis was conducted in ABAQUS, and fatigue limits were estimated using Fe-safe. ANOVA (α = 0.1) identified the most influential parameters. Von Mises stress values ranged from 229 MPa to 302 MPa, and 94.4% of the CAs had a higher fatigue limit than the RA. Three parameters significantly affected the fatigue performance of the implant system. The design process of custom abutments includes critical design parameters that can be optimized for longer lifetimes of implant-abutment restorations.
Mechanical behavior and adhesive potential of glass fiber-reinforced resin-based composites for use as dentin analogues American Journal of Dentistry, 2020
Instrumental shade matching Razvan Ionut Ghinea, María del Mar Pérez Gómez, Luis Javier Herrera Maldonado, Oscar Emilio Pecho Yataco, Alvaro Della Bona Color and Appearance in Dentistry, 2020
Color science and its application in dentistry María del Mar Pérez Gómez, Razvan Ionut Ghinea, Ana María Andreea Ionescu, Oscar Emilio Pecho Yataco, Alvaro Della Bona Color and Appearance in Dentistry, 2020
Visual shade matching María del Mar Pérez Gómez, Juan de la Cruz Cardona Pérez, Razvan Ionut Ghinea, Oscar Emilio Pecho Yataco, Alvaro Della Bona Color and Appearance in Dentistry, 2020
A Novel Silica-Nylon Mesh Reinforcement for Dental Prostheses Tarcisio José de Arruda Paes-Junior, Humberto Lago de Castro, Alexandre Luiz Souto Borges, Alvaro Della Bona, Fernanda de Cássia Papaiz Gonçalves Advances in Materials Science and Engineering, 2017
Microcosm biofilm formation on titanium surfaces Claudio Zeferino Dal’Agnol, Letícia Stefenon, Françoise Hélène van De Sande, Álvaro Della Bona, Maximiliano Sérgio Cenci, et al. Materials Research, 2015
Influence of CAD-CAM diamond bur deterioration on surface roughness and maximum failure load of Y-TZP-based restorations American Journal of Dentistry, 2015
Color difference thresholds in dentistry Rade D. Paravina, Razvan Ghinea, Luis J. Herrera, Alvaro D. Bona, Christopher Igiel, et al. Journal of Esthetic and Restorative Dentistry, 2015
Adhesion to Dental Ceramics Alvaro Della Bona, Márcia Borba, Paula Benetti, Oscar E. Pecho, Rodrigo Alessandretti, et al. Current Oral Health Reports, 2014
Effect of endodontic sealers on tooth color Débora Könzgen Meincke, Maíra Prado, Brenda Paula Figueiredo Gomes, Alvaro Della Bona, Ezilmara Leonor Rolim Sousa Journal of Dentistry, 2013
Bond strength of a resin cement to high-alumina and zirconia-reinforced ceramics: The effect of surface conditioning Journal of Adhesive Dentistry, 2006
