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Serra-Pastor B, Bustamante-Hernández N, Fons-Font A, Solá-Ruíz MF, Revilla-León M, Agustín-Panadero R. Periodontal outcomes of anterior fixed partial dentures on teeth treated with the biologically oriented preparation technique: A 6-year prospective clinical trial. J Prosthet Dent 2021; 129:703-709. [PMID: 34702586 DOI: 10.1016/j.prosdent.2021.07.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 07/14/2021] [Accepted: 07/14/2021] [Indexed: 11/24/2022]
Abstract
STATEMENT OF PROBLEM One of the most frequent complications in participants with fixed partial dentures (FPDs) is the apical migration of the gingival margin, which may be associated with factors such as fit, gingival margin location, or tooth preparation type. The prevalence of the complication in participants restored with FPDs prepared by using the biologically oriented preparation technique (BOPT) is unclear. PURPOSE The purpose of this prospective clinical trial was to evaluate the clinical and biologic outcomes of FPDs on teeth prepared by using the BOPT, over a 6-year follow-up period. MATERIAL AND METHODS Tooth-supported zirconia FPDs in the anterior region prepared by using the BOPT were evaluated. Each participant was monitored annually for 6 years by evaluating plaque index, probing depth, vestibular gingival thickness, and gingival margin stability. Biologic and/or mechanical complications were also recorded. Patient satisfaction was measured by using a visual analog scale (VAS). RESULTS A total of 25 FPDs supported by 70 teeth in 24 participants were analyzed. Low plaque index values and stable probing depths were observed, whereas the gingival index was 0 for most of the teeth. Teeth treated by using the BOPT presented significant increase in gingival thickness, and the gingival margin was found to be stable in 100% of the treatments. FPD survival was 100%. CONCLUSION Tooth supporting FPDs prepared by using the BOPT presented good periodontal health and gingival margin stability, without recession and with a 100% survival rate during a 6-year follow-up.
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Affiliation(s)
- Blanca Serra-Pastor
- Associate Professor, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - Naia Bustamante-Hernández
- Post-graduated student, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - Antonio Fons-Font
- Adjunct Professor, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - María Fernanda Solá-Ruíz
- Adjunct Professor, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain.
| | - Marta Revilla-León
- Assistant Professor and Assistant Program Director AEGD Residency, College of Dentistry, Texas A&M University, Dallas, Texas; Affiliate Faculty Graduate Prosthodontics University of Washington, Seattle, Wash; Researcher, Revilla Research Center, Madrid, Spain
| | - Rubén Agustín-Panadero
- Adjunct Professor, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
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Serra-Pastor B, Bustamante-Hernández N, Fons-Font A, Fernanda Solá-Ruíz M, Revilla-León M, Agustín-Panadero R. Periodontal Behavior and Patient Satisfaction of Anterior Teeth Restored with Single Zirconia Crowns Using a Biologically Oriented Preparation Technique: A 6-Year Prospective Clinical Study. J Clin Med 2021; 10:jcm10163482. [PMID: 34441778 PMCID: PMC8396819 DOI: 10.3390/jcm10163482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/02/2021] [Accepted: 08/05/2021] [Indexed: 01/02/2023] Open
Abstract
Objectives. The aim of this study was to analyze the behavior of the periodontal tissues around teeth in the anterior region when restored with zirconia single crowns, using a biologically oriented preparation technique (BOPT), over a 6-year follow-up. Methods. The study investigated tooth-supported single crowns in the anterior region that were fabricated with a zirconia core and feldspathic ceramic covering, in 34 patients. Follow-up analysis took place annually for 6 years, assessing periodontal responses by evaluating the following variables: plaque index (PI); probing depth (PD); gingival index (GI); gingival thickness adjacent to the restoration; and stability of the gingival margin (MS). Any (biological and mechanical) complications were also recorded, as well as the patients’ satisfaction with the treatment. Results. After 6 years’ follow-up, a low mean plaque index was obtained, probing depth was stable, and gingival thickness and margin stability had increased. Complications (biological and mechanical) did not present a statistically significant incidence and a crown survival rate of 97.2% was achieved. Patients’ satisfaction obtained a mean VAS score of 9.04 under 10. Conclusion. Teeth that are prepared with BOPT in the anterior region present good periodontal behavior around the restored teeth, particularly in terms of the stability of the gingival margin and increased gingival thickness. Single crowns prepared with BOPT obtain an excellent clinical survival rate, as well as a high score in patients’ satisfaction after 6 years.
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Affiliation(s)
- Blanca Serra-Pastor
- Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain; (B.S.-P.); (N.B.-H.); (A.F.-F.); (R.A.-P.)
| | - Naia Bustamante-Hernández
- Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain; (B.S.-P.); (N.B.-H.); (A.F.-F.); (R.A.-P.)
| | - Antonio Fons-Font
- Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain; (B.S.-P.); (N.B.-H.); (A.F.-F.); (R.A.-P.)
| | - María Fernanda Solá-Ruíz
- Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain; (B.S.-P.); (N.B.-H.); (A.F.-F.); (R.A.-P.)
- Correspondence:
| | | | - Rubén Agustín-Panadero
- Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain; (B.S.-P.); (N.B.-H.); (A.F.-F.); (R.A.-P.)
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Marco-Pitarch R, García-Selva M, Plaza-Espín A, Puertas-Cuesta J, Agustín-Panadero R, Fernández-Julián E, Marco-Algarra J, Fons-Font A. Dimensional analysis of the upper airway in obstructive sleep apnoea syndrome patients treated with mandibular advancement device: A bi- and three-dimensional evaluation. J Oral Rehabil 2021; 48:927-936. [PMID: 33977548 DOI: 10.1111/joor.13176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 05/21/2020] [Accepted: 04/04/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND The efficiency of the mandibular advancement device (MAD) in patients with obstructive sleep apnoea syndrome (OSAS) has been demonstrated. Nevertheless, the behaviour of the upper airway once MAD is placed and titrated, and its correlation with the apnoea-hypopnoea index (AHI) is still under discussion. OBJECTIVES To analyse the morphological changes of the upper airway through a bi- and three-dimensional study and correlate it with the polysomnographic variable, AHI. METHODS Patients were recruited from two different hospitals for the treatment of OSAS with a custom-made MAD. A cone-beam computer tomography and a polysomnography were performed at baseline and once the MAD was titrated. RESULTS A total of 41 patients completed the study. Treatment with MAD reduced the AHI from 22.5 ± 16.8 to 9.2 ± 11.6 (p ≤ .05). There was a significant increase of the total airway volume with MAD from 21.83 ± 7.05 cm3 to 24.19 ± 8.19 cm3 , at the expense of the oropharynx. Moreover, the correlation between the improvement of the AHI and the augmentation of the volume of the upper airway was not statistically significant. CONCLUSIONS The oral device used in this prospective study increased the mean upper pharyngeal airway volume and significantly reduced the AHI. Future studies that measure the muscular tone are needed to completely understand the association between the AHI and the physiological and anatomical response of the upper airway.
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Affiliation(s)
- Rocío Marco-Pitarch
- Department of Stomatology, Medical School of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - Marina García-Selva
- Department of Stomatology, Medical School of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - Andrés Plaza-Espín
- Department of Stomatology, Medical School of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | | | - Rubén Agustín-Panadero
- Department of Stomatology, Medical School of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | | | - Jaime Marco-Algarra
- Department of Otorhinolaryngology, Medical School of Medicine and Dentistry, Hospital Clínico Universitario, University of Valencia, Valencia, Spain
| | - Antonio Fons-Font
- Department of Stomatology, Medical School of Medicine and Dentistry, University of Valencia, Valencia, Spain
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Soriano-Valero S, Román-Rodriguez JL, Agustín-Panadero R, Bellot-Arcís C, Fons-Font A, Fernández-Estevan L. Systematic review of chewing simulators: Reality and reproducibility of in vitro studies. J Clin Exp Dent 2020; 12:e1189-e1195. [PMID: 33282141 PMCID: PMC7700780 DOI: 10.4317/jced.57279] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 07/02/2020] [Indexed: 11/05/2022] Open
Abstract
Background The aim of this systematic review was to analyze the types of human chewing simulator described in scientific literature.
Material and Methods An electronic search was conducted in the databases PubMed, Embase and Scopus. The search strategy included 10 search terms: “in vitro”; “dental materials”; “shear strength”; “fatigue fracture”; “bite force”; “prosthetic materials”; “chewing simulator”; “chewing machine”; “simulated mastication”; and “dental wear simulator.” Two researchers worked independently to assess the titles and abstracts of the articles. The quality of the in vitro trials selected was evaluated by means of the Consolidated Standards of Reporting Trials scale.
Results The electronic search identified 80 articles related to the topic of interest. After reading the full texts, ten works were selected. The articles focused mainly on the design of chewing simulators. Most of them were considered of moderate quality. Regarding the characteristics that an ideal chewing simulator should encompass, the devices described in articles varied greatly in terms of movement, periodontal ligament simulation, force sensors, and the materials tested.
Conclusions No chewing simulator offers all the characteristics necessary to reproduce human masticatory movements and forces under the humidity and pH conditions of the oral cavity. A simulator that encompasses all these characteristics would make it possible to standardize trials involving simulated mastication. Key words:In vitro, dental materials, dental wear simulator.
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Affiliation(s)
| | - Juan-Luis Román-Rodriguez
- Prosthodontics and Occlusion Unit, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain
| | - Rubén Agustín-Panadero
- Prosthodontics and Occlusion Unit, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain
| | - Carlos Bellot-Arcís
- Orthodontics Teaching Unit, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain
| | - Antonio Fons-Font
- Prosthodontics and Occlusion Unit, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain
| | - Lucía Fernández-Estevan
- Prosthodontics and Occlusion Unit, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain
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Agustín-Panadero R, Martín-de Llano JJ, Fons-Font A, Carda C. Histological study of human periodontal tissue following biologically oriented preparation technique (BOPT). J Clin Exp Dent 2020; 12:e597-e602. [PMID: 32665820 PMCID: PMC7335606 DOI: 10.4317/jced.56290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 10/07/2020] [Indexed: 11/05/2022] Open
Abstract
Background The aim of this study was to conduct histological analysis of a human tooth resected with the periodontal insertion apparatus intact following treatment using biologically oriented preparation technique (BOPT). Material and Methods This descriptive histological dento-periodontal study used an anterior tooth extracted with the surrounding periodontal tissues intact, following prosthetic restoration with BOPT. The sample patient was recruited from among those attending the Department of Dental Medicine at the Faculty of Medicine and Dentistry, University of Valencia (Spain). Eight serial sections of the restored tooth were processed. The relative location and histological characteristics of the cemented prosthetic crown, the dental tissues of the tooth prepared by BOPT technique, and the periodontal tissues were analyzed. Results Structural analysis of the neoformed junctional epithelium showed that the number of layers decrease apically until there was a single row of cells perfectly adhered to the acellular cementum, and beneath the epithelium a connective tissue evidently free from inflammation. The tissues of the neoformed periodontium (gingival ligament, sulcular epithelium, junctional epithelium) presented histologic normality. Conclusions Biologically oriented preparation technique is a reliable alternative to conventional horizontal finish lines. Key words:Vertical preparation, prosthetic cementoenamel junction (PCEJ), finish line, BOPT, crown.
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Affiliation(s)
- Rubén Agustín-Panadero
- DDS, PhD. Adjunct Professor, Department of Oral Medicine, Faculty of Medicine and Dentistry, University of Valencia, Spain
| | - José-Javier Martín-de Llano
- BSc, PhD. Professor, Department of Pathology and Health Research Institute of the Hospital Clínico (INCLIVA), Faculty of Medicine and Dentistry, University of Valencia, Spain
| | - Antonio Fons-Font
- DMD, PhD. Professor, Department of Oral Medicine, Faculty of Medicine and Dentistry, University of Valencia, Spain
| | - Carmen Carda
- DMD, PhD. Chairman, Department of Pathology and Health Research Institute of the Hospital Clínico (INCLIVA), Faculty of Medicine and Dentistry, University of Valencia, Spain
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García-Engra G, Fernandez-Estevan L, Casas-Terrón J, Fons-Font A, Castelo-Baz P, Agustín-Panadero R, Román-Rodriguez JL. Fracture Resistance of New Metal-Free Materials Used for CAD-CAM Fabrication of Partial Posterior Restorations. Medicina (B Aires) 2020; 56:medicina56030132. [PMID: 32197479 PMCID: PMC7143083 DOI: 10.3390/medicina56030132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 03/14/2020] [Accepted: 03/16/2020] [Indexed: 11/24/2022] Open
Abstract
Background and Objectives: To evaluate in vitro the fracture resistance and fracture type of computer-aided design and computer-aided manufacturing (CAD-CAM) materials. Materials and Methods: Discs were fabricated (10 × 1.5 mm) from four test groups (N = 80; N = 20 per group): lithium disilicate (LDS) group (control group): IPS e.max CAD®; zirconium-reinforced lithium silicate (ZRLS) group: VITA SUPRINITY®; polymer-infiltrated ceramic networks (PICN) group: VITA ENAMIC®; resin nanoceramics (RNC) group: LAVA™ ULTIMATE. Each disc was cemented (following the manufacturers’ instructions) onto previously prepared molar dentin. Samples underwent until fracture using a Shimadzu® test machine. The stress suffered by each material was calculated with the Hertzian model, and its behavior was analyzed using the Weibull modulus. Data were analyzed with ANOVA parametric statistical tests. Results: The LDS group obtained higher fracture resistance (4588.6 MPa), followed by the ZRLS group (4476.3 MPa) and PICN group (4014.2 MPa) without statistically significant differences (p < 0.05). Hybrid materials presented lower strength than ceramic materials, the RNC group obtaining the lowest values (3110 MPa) with significant difference (p < 0.001). Groups PICN and RNC showed greater occlusal wear on the restoration surface prior to star-shaped fracture on the surface, while other materials presented radial fracture patterns. Conclusion: The strength of CAD-CAM materials depended on their composition, lithium disilicate being stronger than hybrid materials.
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Affiliation(s)
- Georgina García-Engra
- Prosthodontics and Occlusion Unit, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46021 Valencia, Spain; (G.G.-E.); (J.C.-T.); (A.F.-F.); (R.A.-P.); (J.L.R.-R.)
| | - Lucia Fernandez-Estevan
- Prosthodontics and Occlusion Unit, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46021 Valencia, Spain; (G.G.-E.); (J.C.-T.); (A.F.-F.); (R.A.-P.); (J.L.R.-R.)
- Correspondence: ; Tel.: +34-963-864-034
| | - Javier Casas-Terrón
- Prosthodontics and Occlusion Unit, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46021 Valencia, Spain; (G.G.-E.); (J.C.-T.); (A.F.-F.); (R.A.-P.); (J.L.R.-R.)
| | - Antonio Fons-Font
- Prosthodontics and Occlusion Unit, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46021 Valencia, Spain; (G.G.-E.); (J.C.-T.); (A.F.-F.); (R.A.-P.); (J.L.R.-R.)
| | - Pablo Castelo-Baz
- Co-director of Master’s Program in Endodontics, Restorative Dentistry, and Dental Esthetics, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain;
| | - Rubén Agustín-Panadero
- Prosthodontics and Occlusion Unit, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46021 Valencia, Spain; (G.G.-E.); (J.C.-T.); (A.F.-F.); (R.A.-P.); (J.L.R.-R.)
| | - Juan Luis Román-Rodriguez
- Prosthodontics and Occlusion Unit, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46021 Valencia, Spain; (G.G.-E.); (J.C.-T.); (A.F.-F.); (R.A.-P.); (J.L.R.-R.)
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Serra-Pastor B, Loi I, Fons-Font A, Solá-Ruíz MF, Agustín-Panadero R. Periodontal and prosthetic outcomes on teeth prepared with biologically oriented preparation technique: a 4-year follow-up prospective clinical study. J Prosthodont Res 2019; 63:415-420. [DOI: 10.1016/j.jpor.2019.03.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 03/15/2019] [Accepted: 03/18/2019] [Indexed: 11/30/2022]
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Fons-Badal C, Agustín-Panadero R, Solá-Ruíz MF, Alpiste-Illueca F, Fons-Font A. Assessment of the capacity of a pyrophosphate-based mouth rinse to inhibit the formation of supragingival dental calculus. A randomized double-blind placebo-controlled clinical trial. Med Oral Patol Oral Cir Bucal 2019; 24:e621-e629. [PMID: 31433396 PMCID: PMC6764717 DOI: 10.4317/medoral.23036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 03/08/2019] [Indexed: 11/26/2022] Open
Abstract
Background This study aimed to analyze the efficacy of an anti-calculus mouth rinse and its possible adverse effects on the mucosa and teeth. Material and Methods This randomized double-blind placebo-controlled clinical trial included 40 patients with treated and managed periodontal disease, all with a history of rapid calculus formation. Patients used a pyrophosphate-based test mouth rinse (B) or a placebo (A). A range of parameters were measured for: saliva (saliva flow, pH and chemical composition); calculus (Volpe-Manhold [V-M] index, weight, and volume); adverse effects on mucosa and teeth; and the patients’ subjective perceptive of mouth rinse efficacy. Results The test mouth rinse B produced reductions in urea, uric acid, and phosphorous, calcium, saliva flow, and increases in pH. V-M index and calculus weight decreased after using the test mouth rinse. Calculus volume decreased with both mouth rinses. No changes to the mucosa or teeth were observed. Patients perceived that the test mouth rinse was more effective. Conclusions The test/B and placebo mouth rinses both modified certain parameters in saliva composition, particularly reductions in urea, uric acid, and phosphorous. Calcium tended to increase after using the test-B mouth rinse. The results did not demonstrate the anticalculus efficacy of the pyrophosphate-based mouth rinse or positive effects on saliva flow or composition. This field requires further research, as no product has been developed that prevents calculus formation completely. Key words:Dental calculus, anticalculus mouth rinse, Volpe Manhold index.
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Affiliation(s)
- C Fons-Badal
- Faculty of Medicine and Dentistry, (Unit Prosthodontics and Occlusion), University of Valencia, Spain, C/Gascó Oliag, 1, 46021 Valencia,
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Agustín-Panadero R, Serra-Pastor B, Roig-Vanaclocha A, Fons-Font A, Solá-Ruiz MF. Fracture resistance and the mode of failure produced in metal-free crowns cemented onto zirconia abutments in dental implants. PLoS One 2019; 14:e0220551. [PMID: 31393888 PMCID: PMC6687178 DOI: 10.1371/journal.pone.0220551] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 07/18/2019] [Indexed: 11/19/2022] Open
Abstract
The purpose of the investigation was to analyze fracture resistance and mode of failure of zirconium oxide (zirconia) abutments placed on dental implants bearing crowns of different esthetic materials: zirconia, lithium disilicate (LDS), and nano-ceramic resin, for replacing single teeth in the anterior sector. Eighty implant-abutment-crown units were divided into four groups: Group T-MC (control): 20 metal-ceramic crowns cemented onto titanium abutments; Group Z-Z: 20 zirconia crowns on zirconia abutments; Group Z-LD: 20 lithium disilicate crowns on zirconia abutments; and Group Z-NCR: 20 nano-ceramic resin crowns on zirconia abutments. Specimens underwent a fatiguing process (dynamic loading and thermocycling), followed by static loading to evaluate mechanical fracture resistance, and the mode of failure produced. Mean fracture resistance values were: Control Group T-MC, 575.85±120.01 N; Group Z-Z 459.64±66.52 N; Group Z-LD, 531.77±34.10 N; and Group Z-NCR, 587.05±59.27 N. In Group T-MC, fracture occurred in the prosthetic fixing screw in 100% of specimens. In Group Z-Z, 80% of fractures occurred in the fixing screw, 15% in the abutment, and 5% in the abutment and crown. In Group Z-LD, 60% of fractures were produced in the fixing screw and 40% in the abutment. In Group Z-NCR, 70% of fractures were produced in the fixing screw and 30% in the abutment. All the abutments and crowns analyzed have the potential to withstand the physiological occlusal forces to which they would be subject in the anterior region. Lithium disilicate and nano-ceramic resin crowns cemented onto zirconia abutments are a good restoration alternative for single implants in the anterior sector.
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Affiliation(s)
- Rubén Agustín-Panadero
- Department of Dental Medicine, Faculty of Medicine and Dentistry, Valencia University, Valencia, Spain
| | - Blanca Serra-Pastor
- Department of Dental Medicine, Faculty of Medicine and Dentistry, Valencia University, Valencia, Spain
| | - Ana Roig-Vanaclocha
- Department of Dental Medicine, Faculty of Medicine and Dentistry, Valencia University, Valencia, Spain
| | - Antonio Fons-Font
- Department of Dental Medicine, Faculty of Medicine and Dentistry, Valencia University, Valencia, Spain
| | - María Fernanda Solá-Ruiz
- Department of Dental Medicine, Faculty of Medicine and Dentistry, Valencia University, Valencia, Spain
- * E-mail:
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Pineda-Vasquez L, Fons-Font A, Bustos-Salvador JL, Alonso-Perez-Barquero J, Roman-Rodriguez JL. Shear bond strength of debonded ceramic restorations re-cemented by means of a cleaning and retreatment protocol. J Clin Exp Dent 2019; 11:e506-e511. [PMID: 31346369 PMCID: PMC6645257 DOI: 10.4317/jced.55706] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 03/21/2019] [Indexed: 11/22/2022] Open
Abstract
Background As there is no standard method for re-cementing debonded partial ceramic restorations, the aim of this study was to evaluate the use of a non-invasive thermal protocol for cleaning and retreatment, and to study its influence on shear bond strength. Material and Methods Twenty ceramic samples (IPS e.max CAD®) were bonded to composite cement cylinders and underwent a shear bond strength test (G1, n=20). A second group was created (G2, n=20), representing debonded restorations. To simulate debonding, the samples were artificially contaminated with composite cement. After debonding, these underwent a thermal protocol to remove remaining adhesive. After rebonding to the composite cement cylinders, samples underwent the shear bond strength test. Results Median bond strengths for G1 and G2 were 7.28±3.23; 7.06±3.41 MPa, respectively, without significant difference between the groups (p=0.983). Conclusions Debonded lithium disilicate glass-ceramic restorations should undergo a laboratory cleaning and retreatment protocol before being returned to the clinic for rebonding. Key words:Ceramic, adhesive debonding, shear bond strength, porcelain laminated veneers.
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Agustín-Panadero R, Serra-Pastor B, Fons-Font A, Solá-Ruíz MF. Prospective Clinical Study of Zirconia Full-coverage Restorations on Teeth Prepared With Biologically Oriented Preparation Technique on Gingival Health: Results After Two-year Follow-up. Oper Dent 2018. [DOI: 10.2341/17-124-c] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
Objectives:
To evaluate the clinical behavior of one-piece complete-coverage crowns and fixed partial dentures (FPDs) on teeth with vertical preparation without finish line biologically oriented preparation technique (BOPT).
Methods and Materials:
This prospective study included 52 patients requiring treatment with restorations in the esthetic region: 74 crowns and 27 FPDs. The sample included a total of 149 teeth that were prepared vertically without finish line. The sample was divided into two groups: one-piece crowns and FPDs, all with zirconia cores, feldspathic ceramic veneer, and a 0.5-mm prosthetic finish line of zirconia. All procedures were carried out at the University of Valencia from 2013 to 2014. The following parameters were evaluated over a two-year follow-up: oral hygiene, periodontal state, gingival thickening, gingival margin stability, the presence of complications, and restoration survival rate. Patient satisfaction with treatment was assessed by means of a visual analogue scale (VAS).
Results:
Two years after treatment, 80.5% of treated teeth remained free of gingival inflammation and bleeding. Mean gingival thickening was 0.41 ± 0.28 mm for one-piece crowns and 0.38 ± 0.36 mm for FPDs. Gingival margin stability was 100%, but 2% of the sample presented biological complications. The VAS patient satisfaction scores were eight out of a maximum score of 10.
Conclusions:
Two years after treatment, vertical preparation without finish line produces gingival thickening, margin stability, and optimal esthetics. Neither crowns nor FPDs presented any mechanical complications.
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Affiliation(s)
- R Agustín-Panadero
- Rubén Agustín-Panadero, DDS, MSc, PhD, associate professor, Faculty of Medicine and Dentistry, Valencia University, Department of Stomatology, Clínicas Odontológicas, Valencia, Spain
| | - B Serra-Pastor
- Blanca Serra Pastor, DDS, assistant professor, Faculty of Medicine and Dentistry, Valencia University, Department of Stomatology, Clínicas Odontológicas, Valencia, Spain
| | - A Fons-Font
- Antonio Fons-Font, DDS, PhD, MD, adjunct professor, Faculty of Medicine and Dentistry, Valencia University, Department of Stomatology, Clínicas Odontológicas, Valencia, Spain
| | - MF Solá-Ruíz
- Mª Fernanda Solá-Ruíz, DDS, PhD, MD, adjunct professor, Faculty of Medicine and Dentistry, Valencia University, Department of Stomatology, Clínicas Odontológicas, Valencia, Spain
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Agustín-Panadero R, Roig-Vanaclocha A, Fons-Font A, Solá-Ruíz MF. Comparative In Vitro Study of Implant-Supported Restorations: Implant-Abutment Complex With and Without Prosthetic Finishing Line. Int J Oral Maxillofac Implants 2018; 3:747-753. [PMID: 30024989 DOI: 10.11607/jomi.6214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
PURPOSE The aim of this study was to evaluate the mechanical behavior of implant-supported cemented restorations placed on two types of abutment design, with and without a prosthetic finish line, evaluating fracture resistance and the type of fracture produced in the abutment-crown complex. MATERIALS AND METHODS Eighty zirconia restorations supported by tapered implants were divided into two groups: group I, with 40 zirconia crowns cemented onto individualized zirconia abutments with a chamfered finish line (1 mm deep); and group II, with 40 zirconia crowns cemented onto individualized zirconia abutments without a finish line. All specimens underwent thermocycling and dynamic loading before static load testing to evaluate their fracture resistance. RESULTS Fracture resistance values (N) and the type of fracture were analyzed. The mean fracture resistance was 462.1 ± 66.3 N in group I and 343 ± 40 N in group II. In group I, fractures were produced in the prosthetic fixation screw; in group II, all mechanical failures were produced in the transepithelial abutment's cervical area. CONCLUSION Group I specimens showed greater fracture resistance than group II. The fracture type in group I occurred in the prosthetic screw. Group II fractures occurred in the zirconium oxide abutment.
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Fernández-Estevan L, Millan-Martínez D, Fons-Font A, Agustín-Panadero R, Román-Rodríguez JL. Methodology in specimen fabrication for in vitro dental studies: Standardization of extracted tooth preparation. J Clin Exp Dent 2017; 9:e897-e900. [PMID: 28828157 PMCID: PMC5549588 DOI: 10.4317/jced.54020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Accepted: 05/27/2017] [Indexed: 11/22/2022] Open
Abstract
Background Specimen preparation for in vitro study suffers a general lack of methodological homogeneity, as well as a lack of uniformity in the materials selected for fabricating them. This situation prevents comparisons between studies. When a specimen is not of dental origin it is not possible to study adhesion or bonding techniques realistically. The objective is to design and implement a method of specimen preparation that permits universal standardization for use in in vitro studies. Material and Methods A metal stump of specified dimensions was designed and fabricated by hand. It was scanned, the data digitalized, perfecting and standardizing the dimensions. Ten human molars were adapted to the size and shape of a standard milling block. A Cerec 3D inLab Cerec milling unit was used to prepare the molars to match the digitalized model. Results Ten specimens with identical dimensions were obtained. Conclusions CAD-CAM technology allows the preparation of natural extracted teeth to be standardized and could be used to establish a reproducible method that would facilitate comparison between different in vitro studies, and reduce bias arising from variations in sample fabrication. Key words:Test ceramic, dentin analog, dentin model, dentin samples, methodology.
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Affiliation(s)
- Lucía Fernández-Estevan
- Doctor in Dentistry (DDS; PhD). Master Buccofacial Prosthetics (M.Sc). Associate Lecturer, Department of Dental medicine, Prosthodontic and Occlusion Teaching Unit, UVGS, Spain
| | | | - Antonio Fons-Font
- Doctor in Dentistry (DDS; PhD). Assistant Lecturer, Department of Dental medicine, Prosthodontic and Occlusion Teaching Unit, UVGS, Spain
| | - Rubén Agustín-Panadero
- Doctor in Dentistry (DDS; PhD). Master Buccofacial Prosthetics (M.Sc). Associate Lecturer, Department of Dental medicine, Prosthodontic and Occlusion Teaching Unit, UVGS, Spain
| | - Juan-Luis Román-Rodríguez
- Doctor in Dentistry (DDS; PhD). Master Buccofacial Prosthetics (M.Sc). Associate Lecturer, Department of Dental medicine, Prosthodontic and Occlusion Teaching Unit, UVGS, Spain
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14
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Román-Rodríguez JL, Millan-Martínez D, Fons-Font A, Agustín-Panadero R, Fernández-Estevan L. Traction test of temporary dental cements. J Clin Exp Dent 2017; 9:e564-e568. [PMID: 28469824 PMCID: PMC5410679 DOI: 10.4317/jced.53732] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 02/08/2017] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Classic self-curing temporary cements obstruct the translucence of provisional restorations. New dual-cure esthetic temporary cements need investigation and comparison with classic cements to ensure that they are equally retentive and provide adequate translucence. The objective is to analyze by means of traction testing in a in vitro study the retention of five temporary cements. MATERIAL AND METHODS Ten molars were prepared and ten provisional resin restorations were fabricated using CAD-CAM technology (n=10). Five temporary cements were selected: self-curing temporary cements, Dycal (D), Temp Bond (TB), Temp Bond Non Eugenol (TBNE); dual-curing esthetic cements Temp Bond Clear (TBC) and Telio CS link (TE). Each sample underwent traction testing, both with thermocycling (190 cycles at 5-55º) and without thermocycling. RESULTS TE and TBC obtained the highest traction resistance values. Thermocycling reduced the resistance of all cements except TBC. CONCLUSIONS The dual-cure esthetic cements tested provided optimum outcomes for bonding provisional restorations. Key words:Temporary dental cements, cements resistance.
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Affiliation(s)
- Juan-Luis Román-Rodríguez
- Doctor in Dentistry (DDS; PhD). Master Buccofacial Prosthetics (M.Sc). Associate Lecturer, Department of Dental medicine, Prosthodontic and Occlusion Teaching Unit, University of Valencia General Studies (UVGS), Spain
| | | | - Antonio Fons-Font
- Doctor in Dentistry (DDS; PhD). Assistant Lecturer, Department of Dental medicine, Prosthodontic and Occlusion Teaching Unit, UVGS, Spain
| | - Rubén Agustín-Panadero
- Doctor in Dentistry (DDS; PhD). Master Buccofacial Prosthetics (M.Sc). Associate Lecturer, Department of Dental medicine, Prosthodontic and Occlusion Teaching Unit , UVGS, Spain
| | - Lucía Fernández-Estevan
- Doctor in Dentistry (DDS; PhD). Master Buccofacial Prosthetics (M.Sc). Associate Lecturer, De-partment of Dental medicine, Prosthodontic and Occlusion Teaching Unit, UVGS, Spain
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Román-Rodríguez JL, Perez-Barquero JA, Gonzalez-Angulo E, Fons-Font A, Bustos-Salvador JL. Bonding to silicate ceramics: Conventional technique compared with a simplified technique. J Clin Exp Dent 2017; 9:e384-e386. [PMID: 28298979 PMCID: PMC5347286 DOI: 10.4317/jced.53570] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 11/17/2016] [Indexed: 11/29/2022] Open
Abstract
Background Silicate ceramic bonding is carried out by acid-etching with hydrofluoric acid (HF) followed by an application of silane. By replacing HF with ammonium polyfluoride, contained in the same flask as the silane, the number of steps in this clinical procedure, can be reduced, while maintaining bond strength values, and reducing toxicity. A shear bond test was performed to compare the conventional and the simplified surface treatment techniques. Material and Methods Twenty ceramic samples were fabricated from IPS emax CAD® ceramic (Ivoclar Vivadent) and divided into two groups (G1 and G2) (n=10). The conventional technique was applied to G1 samples, and the simplified technique to G2 samples. A resin cement cylinder was bonded to each sample. Afterwards, samples underwent shear bond strength testing in a universal test machine. Results G1 obtained 26.53±6.33 MPa and G2 23.52±8.41 MPa, without statistically significant differences between the two groups. Conclusions Monobond Etch&Prime appears to obtain equivalent results in terms of bond strength while simplifying the technique. Further investigation is required to corroborate these preliminary findings. Key words:Shear bond strength, surface treatment, bonding to ceramic, hydrofluoric acid, ammonium polyfluoride.
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Affiliation(s)
- Juan-Luis Román-Rodríguez
- Associate Lecturer, Department of Dental Medicine, Prosthodontic and Occlusion Teaching Unit, University of Valencia, University of Valencia General Studies (UVGS), Spain
| | - Jorge-Alonso Perez-Barquero
- Associate Lecturer, Department of Dental Medicine, Prosthodontic and Occlusion Teaching Unit, University of Valencia, University of Valencia General Studies (UVGS), Spain
| | - Eva Gonzalez-Angulo
- Associate Lecturer, Department of Dental Medicine, Prosthodontic and Occlusion Teaching Unit, University of Valencia, University of Valencia General Studies (UVGS), Spain
| | - Antonio Fons-Font
- Assistant Lecturer, Department of Dental medicine, Prosthodontic and Occlusion Teaching Unit, UVGS, Spain
| | - Jose-Luis Bustos-Salvador
- Associate Lecturer, Department of Dental Medicine, Prosthodontic and Occlusion Teaching Unit, University of Valencia, University of Valencia General Studies (UVGS), Spain
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Agustín-Panadero R, Ferreiroa A, Pascual-Moscardó A, Fons-Font A, Solá-Ruíz MF. In vivo evaluation of three-dimensional of volumetric changes using a CAD/CAM chair-side system: Technical procedure. J Clin Exp Dent 2017; 9:e489-e493. [PMID: 28298996 PMCID: PMC5347303 DOI: 10.4317/jced.53531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 11/06/2016] [Indexed: 11/05/2022] Open
Abstract
An intraoral digital scanner in combination with specialized three-dimensional surface analysis software monitors volumetric changes to soft tissues or dental restorations. This technology can evaluate the success of a specific technique or medium- or long-term clinical outcomes in both clinical and research situations. This article describes how this technology was used to provide immediate chair-side data analysis without the help of specialized laboratory support. Key words:Intraoral scanner, CAD-CAM, best fit-method, surface tessellation language.
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Affiliation(s)
- Rubén Agustín-Panadero
- DMD, PhD, Associate Professor. Department of Dental Medicine, Faculty of Medicine and Dentistry, University of Valencia, Spain
| | - Alberto Ferreiroa
- DMD, PhD, Associate Professor. Department of Buccofacial Prosthetics, Faculty of Dentistry, Complutense University of Madrid, Spain
| | - Agustín Pascual-Moscardó
- MD, DMD, PhD, Professor. Department of Dental Medicine, Faculty of Medicine and Dentistry, University of Valencia, Spain
| | - Antonio Fons-Font
- MD, DMD, PhD, Adjunct Professor. Department of Dental Medicine, Faculty of Medicine and Dentistry, University of Valencia, Spain
| | - María-Fernanda Solá-Ruíz
- MD, DMD, PhD, Professor. Department of Dental Medicine, Faculty of Medicine and Dentistry, University of Valencia, Spain
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Solá-Ruíz MF, Agustin-Panadero R, Fons-Font A, Labaig-Rueda C. A prospective evaluation of zirconia anterior partial fixed dental prostheses: Clinical results after seven years. J Prosthet Dent 2015; 113:578-84. [DOI: 10.1016/j.prosdent.2014.12.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 12/19/2014] [Accepted: 12/29/2014] [Indexed: 10/23/2022]
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Agustín-Panadero R, Mateos-Palacios R, Román-Rodríguez JL, Solá-Ruíz MF, Fons-Font A. Influence of surface preparation on fracture load of resin composite-based repairs. J Clin Exp Dent 2015; 7:e80-3. [PMID: 25810848 PMCID: PMC4368024 DOI: 10.4317/jced.52084] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 11/13/2014] [Indexed: 11/05/2022] Open
Abstract
The purpose of the present study is to evaluate the fracture load of composite-based repairs to fractured zirconium oxide (Z) crowns and to ceramic-fused-to-metal (CM) crowns, comparing different mechanical surface preparation methods. A total of 75 crowns were repaired; samples then underwent dynamic loading and thermocycling. Final fracture load values for failure of the repaired crowns were measured and the type of fracture registered. Group I: CM: Surface preparation with a diamond bur + 9.5% Hydrofluoric Acid (HF) etching; Group II): CM: air-particle (Al2O3) + 9.5% HF; Group III: CM: Silica coating (SiO2); Group IV): Z: air-particle (Al2O3) + HF 9.5%; Group V) Z: Silica coating (SiO2). Of the three CM groups, Group I (CM-diamond bur) showed the highest mean failure value, with significant difference in comparison with Group III (CM-silica coating). For the zirconia groups, the highest value was obtained by Group V (silica coating).
Key words:Crown, ceramic-fused-to-metal, zirconia, resin-composite, ceramic covering.
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Affiliation(s)
- Rubén Agustín-Panadero
- Associate Lecturer, Department of Dental Medicine, Faculty of Medicine and Dentistry, University of Valencia, Spain
| | - Rocío Mateos-Palacios
- Master of Buccofacial Prosthetics, Department of Dental Medicine, Faculty of Medicine and Dentistry, University of Valencia, Spain
| | - Juan-Luis Román-Rodríguez
- Associate Lecturer, Department of Dental Medicine, Faculty of Medicine and Dentistry, University of Valencia, Spain
| | - María-Fernanda Solá-Ruíz
- Assistant Lecturer, Department of Dental Medicine, Faculty of Medicine and Dentistry, University of Valencia, Spain
| | - Antonio Fons-Font
- Senior Lecturer, Department of Dental Medicine, Faculty of Medicine and Dentistry, University of Valencia, Spain
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Agustín-Panadero R, Serra-Pastor B, Chust-López C, Fons-Font A, Ferreiroa A. Immediate placement of single implant simultaneously with immediate loading in a fresh socket associated to periapical infection: A clinical case report. J Clin Exp Dent 2015; 7:e175-9. [PMID: 25810833 PMCID: PMC4368009 DOI: 10.4317/jced.52160] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Accepted: 11/07/2014] [Indexed: 11/16/2022] Open
Abstract
Early restoration of the masticatory function, phonatory and aesthetics is some of the current goals of the therapy based on endosseous implants. Facing the classic protocols of implant insertion, which recommend a period of several months between extraction and implant placement, alternatives have been developed that demonstrate that immediate implant placement after tooth extraction permits adequate osseointegration, even in those cases where there is a periapical disease. The immediate restoration of implants after placement is a possibility where aesthetic requirements are high. This article presents a case with immediate implant placement and immediate loading of a first upper premolar with prior periapical pathology due to a vertical fracture. The immediate prosthetic was performed using the extracted crown, which is adapted to be attached to a titanium temporary abutment using a resin cement. After a 4 month healing period work began on the final prosthetic crown. The screw crown was made of zirconium oxide with a covering feldspathic ceramic. At the 12-month follow-up, there were no mechanical or biological complications. The patient gave high satisfaction marks for the overall treatment, giving visual analogue scale score of nine. Immediate post-extraction implants have arisen as an alternative to traditional implants on completely healed bone. Their main aim is to reduce treatment time and number of surgical procedures, along with other objectives such as reduced bone re-absorption and improved aesthetics.
Key words:Post-extraction implants, immediate loading prosthetic, implant-retained prosthesis, periapical disease, vertical fracture.
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Affiliation(s)
- Rubén Agustín-Panadero
- Associate Professor of the Department of Stomatology. Faculty of Medicine and Dentistry, Valencia University, Spain
| | - Blanca Serra-Pastor
- Postgraduate student in Prosthodontics. Department of Buccofacial Prostheses. University Complutense of Madrid. Spain
| | | | - Antonio Fons-Font
- Professor of the Department of Stomatology. Faculty of Medicine and Dentistry, Valencia University, Spain
| | - Alberto Ferreiroa
- Associate Professor of the Department of Buccofacial Prostheses. Faculty of Dentistry. University Complutense of Madrid. Spain
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Román-Rodríguez JL, Alonso-Pérez-Barquero J, Bruguera-Álvarez A, Agustín-Panadero R, Fons-Font A. Cleaning and retreatment protocol for a debonded ceramic restoration. J Clin Exp Dent 2015; 7:e60-2. [PMID: 25810843 PMCID: PMC4368019 DOI: 10.4317/jced.51891] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 10/09/2014] [Indexed: 11/24/2022] Open
Abstract
Objectives: The aim of this article is to propose a resin cement cleaning protocol for use before recementing a debonded restoration.
Study Design: Ceramic samples were fabricated from IPS d.sign® and IPS e.max Press® and were treated with hydrofluoric acid etching (HF), or HF+silane (S), or HF+S+adhesive or HF+S+A+resin cement. All samples were placed in a furnace at 650º for one minute in order to attempt to pyrolyze the composite. Each step was examined under scanning electron microscopy (SEM).
Results: When the cleaning protocol had been performed, it left a clean and retentive surface.
Conclusions: If the restoration is placed in a furnace at 650º for one minute, the composite cement will burn or pyrolyze and disappear, allowing conventional retreatment of the ceramic before rebonding.
Key words:Ceramic, debond, surface treatment.
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Affiliation(s)
- Juan-Luis Román-Rodríguez
- DDS, MSc, PhD, Associate Lecturer, Department of Dental medicine, Prosthodontic and Occlusion Teaching Unit, University of Valencia, University of Valencia General Studies (UVGS) Spain
| | | | | | - Rubén Agustín-Panadero
- DDS, MSc, PhD, Associate Lecturer, Department of Dental medicine, Prosthodontic and Occlusion Teaching Unit, University of Valencia, University of Valencia General Studies (UVGS) Spain
| | - Antonio Fons-Font
- DDS, PhD, MD, Senior Lecturer, Department of Dental medicine, Prosthodontic and Occlusion Teaching Unit, UVGS, Spain
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Roman-Rodriguez JL, Agustin-Panadero R, Alonso-Perez-Barquero J, Fons-Font A, Sola-Ruiz MF. Shear bond strength of partial coverage restorations to dentin. J Clin Exp Dent 2015; 7:e396-9. [PMID: 26330937 PMCID: PMC4554240 DOI: 10.4317/jced.52471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 04/16/2015] [Indexed: 11/24/2022] Open
Abstract
Background When partial coverage restorations (veneers, inlays, onlays…) must be cemented to dentin, bond strength may not reach the same predictable values as to enamel. The purpose of this study was: 1. To compare, with a shear bond test, the bond strength to dentin of a total-etch and a self-etching bonding agent. 2. To determine whether creating microretention improves the bond strength to dentin. Material and Methods Two bonding agents were assayed, Optibond FL® (Kerr), two-bottle adhesive requiring acid etching, and Clearfil SE Bond® (Kuraray), two-bottle self-etching adhesive. The vestibular, lingual, distal and mesial surfaces of ten molars (n=10) were ground to remove all enamel and 40 ceramic samples were cemented with Variolink II® (Ivoclar Vivadent). Half the molar surfaces were treated to create round microretention (pits) to determine whether these could influence bond strength to dentin. The 40 molar surfaces were divided into four groups (n=10): Optibond FL (O); Clearfil SE (C); Optibond FL + microretention (OM); Clearfil SE + micro retention (CM). A shear bond test was performed and the bond failures provoked examined under an optical microscope. Results O=35.27±8.02 MPa; C=36.23±11.23 MPa; OM=28.61±6.27 MPa; CM=27.01±7.57 MPa. No statistically significant differences were found between the adhesives. Optibond FL showed less statistical dispersion than Clearfil SE. The presence of microretentions reduced bond strength values regardless of the adhesive used. Conclusions 1. Clearfil SE self-etching adhesive and Optibond FL acid-etch showed adequate bond strengths and can be recommended for bonding ceramic restorations to dentin. 2. The creation of round microretention pits compromises these adhesives’ bond strength to dentin. Key words:Adhesion to dentin, bonding agent, Optibond FL, Clearfil SE, microretention, shear bond test.
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Agustín-Panadero R, Serra-Pastor B, Roig-Vanaclocha A, Román-Rodriguez JL, Fons-Font A. Mechanical behavior of provisional implant prosthetic abutments. Med Oral Patol Oral Cir Bucal 2015; 20:e94-102. [PMID: 25129253 PMCID: PMC4320428 DOI: 10.4317/medoral.19958] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 05/12/2014] [Indexed: 11/05/2022] Open
Abstract
INTRODUCTION Implant-supported prostheses have to overcome a major difficulty presented by the morphology and esthetics of peri-implant tissues in the anterior sector. Diverse therapeutic techniques are used for managing the mucosa adjacent to the implant and the most noteworthy is immediate/deferred fixed provisionalization. OBJECTIVES In vitro testing of strength and deformation of implant prosthetic abutments made from different materials (Titanium/PEEK/methacrylate). MATERIAL AND METHODS Forty Sweden & Martina® implant prosthetic abutments (n=40) were divided into five groups: Group MP: methacrylate provisional abutments with machined titanium base; Group PP: Polyether ether ketone (PEEK) provisional abutments; Group TP: titanium provisional abutments; Group TAD: titanium anti-rotational definitive abutments; Group TRD: titanium rotational definitive abutments. Their mechanical behavior under static loading was analyzed. Samples were examined under a microscope to determine the type of fracture produced. RESULTS AND CONCLUSIONS Definitive anti-rotational titanium abutments and definitive rotational titanium abutments achieved the best mean compression strength, while PEEK resin provisional abutments obtained the lowest. The group that showed the greatest elastic deformation was the group of titanium provisional abutments.
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Solá-Ruiz MF, Faus-Matoses I, Del Rio Highsmith J, Fons-Font A. Study of surface topography, roughness, and microleakage after dental preparation with different instrumentation. INT J PROSTHODONT 2014; 27:530-3. [PMID: 25390866 DOI: 10.11607/ijp.3932] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
PURPOSE The purpose of this study was to compare the differences in surface characteristics and roughness of teeth finished for porcelain veneer laminates using different instrumentation and to assess their influence on microleakage. MATERIALS AND METHODS Fifty-six extracted human maxillary central incisors were divided randomly into two groups: Group HsR teeth were finished with a high-speed handpiece with diamond burs; group SO teeth were finished with a sonic oscillating diamond instrument. Porcelain veneers were bonded to 24 teeth in each group. Microleakage was measured in the cervical area. Four remaining teeth in each group were examined using confocal laser-scanning microscopy and scanning electron microscopy. RESULTS Oscillating instruments produced a rougher dentinal surface (Ra values; P = .029) than those finished with high-speed rotary technology. CONCLUSIONS There is less microleakage when bonded restoration edges are situated over dentin that has been finished with sonic oscillating instrumentation (P = .006).
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Granell-Ruíz M, Agustín-Panadero R, Fons-Font A, Román-Rodríguez JL, Solá-Ruíz MF. Influence of bruxism on survival of porcelain laminate veneers. Med Oral Patol Oral Cir Bucal 2014; 19:e426-32. [PMID: 23986018 PMCID: PMC4192563 DOI: 10.4317/medoral.19097] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Accepted: 05/31/2013] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE This study aims to determine whether bruxism and the use of occlusal splints affect the survival of porcelain laminate veneers in patients treated with this technique. MATERIAL AND METHODS Restorations were made in 70 patients, including 30 patients with some type of parafunctional habit. A total of 323 veneers were placed, 170 in patients with bruxism activity, and the remaining 153 in patients without it. A clinical examination determined the presence or absence of ceramic failure (cracks, fractures and debonding) of the restorations; these incidents were analyzed for association with bruxism and the use of splints. RESULTS Analysis of the ceramic failures showed that of the 13 fractures and 29 debonding that were present in our study, 8 fractures and 22 debonding were related to the presence of bruxism. CONCLUSIONS Porcelain laminate veneers are a predictable treatment option that provides excellent results, recognizing a higher risk of failure in patients with bruxism activity. The use of occlusal splints reduces the risk of fractures.
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Affiliation(s)
- Maria Granell-Ruíz
- Unidad de Prostodoncia y Oclusión, Edificio Clínica Odontológica, C\ Gascó Oliag, N 1, 46010 Valencia, Spain,
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Agustín-Panadero R, Román-Rodríguez JL, Ferreiroa A, Solá-Ruíz MF, Fons-Font A. Zirconia in fixed prosthesis. A literature review. J Clin Exp Dent 2014; 6:e66-73. [PMID: 24596638 PMCID: PMC3935908 DOI: 10.4317/jced.51304] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 11/21/2013] [Indexed: 02/04/2023] Open
Abstract
Statement of problem: Evidence is limited on the efficacy of zirconia-based fixed dental prostheses.
Objective: To carry out a literature review of the behavior of zirconium oxide dental restorations.
Material and Methods: This literature review searched the Pubmed, Scopus, Medline and Cochrane Library databases using key search words “zirconium oxide,” “zirconia,” “non-metal restorations,” “ceramic oxides,” “veneering ceramic,” “zirconia-based fixed dental prostheses”. Both in vivo and in vitro studies into zirconia-based prosthodontic restoration behavior were included.
Results: Clinical studies have revealed a high rate of fracture for porcelain-veneered zirconia-based restorations that varies between 6% and 15% over a 3- to 5-year period, while for ceramo-metallic restorations the fracture rate ranges between 4 and 10% over ten years. These results provoke uncertainty as to the long-term prognosis for this material in the oral medium. The cause of veneering porcelain fractures is unknown but hypothetically they could be associated with bond failure between the veneer material and the zirconia sub-structure.
Key words:Veneering ceramic, zirconia-based ceramic restoration, crown, zirconia, tooth-supported fixed prosthesis.
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Affiliation(s)
- Rubén Agustín-Panadero
- Associate Lecturer. Department of Dental Medicine, Faculty of Medicine and Dentistry, University of Valencia, Spain
| | - Juan L Román-Rodríguez
- Associate Lecturer. Department of Dental Medicine, Faculty of Medicine and Dentistry, University of Valencia, Spain
| | - Alberto Ferreiroa
- Collaborating Lecturer. Department of Buccofacial Prosthesis, Faculty of Odontology, Complutense University of Madrid
| | - María F Solá-Ruíz
- Assistant Lecturer. Department of Dental Medicine, Faculty of Medicine and Dentistry, University of Valencia, Spain
| | - Antonio Fons-Font
- Senior Lecturer. Department of Dental Medicine, Faculty of Medicine and Dentistry, University of Valencia, Spain
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Farga-Niñoles I, Agustín-Panadero R, Román-Rodriguez JL, Solá-Ruíz MF, Granell-Ruíz M, Fons-Font A. Fractographic study of the behavior of different ceramic veneers on full coverage crowns in relation to supporting core materials. J Clin Exp Dent 2013; 5:e260-6. [PMID: 24455092 PMCID: PMC3892263 DOI: 10.4317/jced.51293] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Accepted: 09/26/2013] [Indexed: 11/05/2022] Open
Abstract
Objectives: To observe porcelain veneer behavior of zirconia and metal-ceramic full coverage crowns when subjected to compression testing, comparing zirconia cores to metal cores.
Study Design: The porcelain fracture surfaces of 120 full coverage crowns (60 with a metal core and 60 with a zirconia core) subjected to static load (compression) testing were analyzed. Image analysis was performed using macroscopic processing with 8x and 12x enlargement. Five samples from each group were prepared and underwent scanning electron microscope (SEM) analysis in order to make a fractographic study of fracture propagation in the contact area and composition analysis in the most significant areas of the specimen.
Results: Statistically significant differences in fracture type (cohesive or adhesive) were found between the metal-ceramic and zirconia groups: the incidence of adhesive fracture was seen to be greater in metal-ceramic groups (92%) and cohesive fracture was more frequent in zirconium oxide groups (72%). The fracture propagation pattern was on the periphery of the contact area in the full coverage crown restorations selected for fractographic study.
Conclusions: The greater frequency of cohesive fracture in restorations with zirconia cores indicates that their behavior is inadequate compared to metal-ceramic restorations and that further research is needed to improve their clinical performance.
Key words:Zirconia, zirconium oxide, fractography, composition, porcelain veneers, fracture, cohesive, adhesive.
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Affiliation(s)
- Ignacio Farga-Niñoles
- DDS, Occlusion and Prosthodontics, Department of Stomatology, University of Valencia, Valencia, Spain
| | - Rubén Agustín-Panadero
- DDS, PhD, Associate professor, Occlusion and Prosthodontics, Department of Stomatology, University of Valencia, Valencia, Spain
| | - Juan L Román-Rodriguez
- DDS, PhD, Associate professor, Occlusion and Prosthodontics, Department of Stomatology, University of Valencia, Valencia, Spain
| | - María F Solá-Ruíz
- MD, DDS, PhD, Adjunct Lecturer, Department of Stomatology, University of Valencia, Valencia, Spain
| | - María Granell-Ruíz
- DDS, PhD, Associate professor, Occlusion and Prosthodontics, Department of Stomatology, University of Valencia, Valencia, Spain
| | - Antonio Fons-Font
- MD, DDS, PhD, Professor of Occlusion and Prosthodontics, Department of Stomatology, University of Valencia, Valencia, Spain
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Solá-Ruíz MF, Agustin-Panadero R, Fons-Font A, Labaig-Rueda C. An implant-supported overdenture design with a horizontal path of insertion. J Prosthet Dent 2013; 110:239-42. [PMID: 24079557 DOI: 10.1016/s0022-3913(13)00199-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The rehabilitation of the atrophic maxilla by means of implant-supported prostheses cannot always be achieved with fixed prostheses because of anatomic, esthetic, or economic issues, so for some patients the treatment of choice is a removable prosthesis. This article analyzes a new design for implant-supported overdentures with horizontal or faciolingual insertion. Its retention system is based on frictional forces or stepped interlocking horizontal surfaces and is appropriate for patients with skeletal Class II or III relationships with severe maxillary atrophies. The design facilitates implant-prosthetic hygiene and improved esthetics in patients with nonparallel implants by hiding abutment screws.
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Affiliation(s)
- M Fernanda Solá-Ruíz
- Adjunct Lecturer, Department of Buccofacial Prosthetics, Faculty of Medicine and Dentistry, University of Valencia, Spain.
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Solá-Ruiz MF, Lagos-Flores E, Román-Rodriguez JL, Highsmith JDR, Fons-Font A, Granell-Ruiz M. Survival rates of a lithium disilicate-based core ceramic for three-unit esthetic fixed partial dentures: a 10-year prospective study. INT J PROSTHODONT 2013; 26:175-80. [PMID: 23476914 DOI: 10.11607/ijp.3045] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
PURPOSE The aim of this prospective study was to evaluate the clinical efficacy and long-term survival rate of three-unit fixed partial dentures (FPDs) made from lithium disilicate-based core ceramic. MATERIALS AND METHODS Twenty-one three-unit FPDs were placed in 19 patients to replace single lost teeth in the esthetic area, following a study protocol that took clinical, esthetic, and radiologic aspects into consideration. Each case was reviewed at 1 week following placement, at 6 months, and then annually for 10 years. Statistical analysis was performed using Kaplan-Meier survival analysis. RESULTS Out of the 19 patients, 14.3% presented reversible postoperative sensitivity. Recession was observed in 24% of dental posts, and 7.1% presented marginal discoloration. Treatment did not increase either Bleeding or Plaque Index scores at prepared teeth; secondary caries did not appear either. The restorations' survival rate at the 10-year follow-up was 71.4%; six FPDs had fractured and one debonded. CONCLUSIONS Fracture failure rate was 28.6% after 10 years; a high percentage corresponded to connector fractures and occurred during the first 5 years. Lithium disilicate glass-ceramic FPDs present a higher risk of fracture than standard therapies (metal-ceramic) or other more recently developed ceramic materials. The prognosis for survival improves for Class I occlusion and nonparafunctional patients.
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Affiliation(s)
- M Fernanda Solá-Ruiz
- Department of Buccofacial Prosthetics, Faculty of Medicine and Dentistry, University of Valencia, Spain.
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Román-Rodríguez JL, Fons-Font A, Amigó-Borrás V, Granell-Ruiz M, Busquets-Mataix D, Panadero RA, Solá-Ruiz MF. Bond strength of selected composite resin-cements to zirconium-oxide ceramic. Med Oral Patol Oral Cir Bucal 2013; 18:e115-23. [PMID: 22926485 PMCID: PMC3548629 DOI: 10.4317/medoral.18243] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Accepted: 05/30/2012] [Indexed: 11/24/2022] Open
Abstract
Objectives: The aim of this study was to evaluate bond strengths of zirconium-oxide (zirconia) ceramic and a selection of different composite resin cements.
Study Design: 130 Lava TM cylinders were fabricated. The cylinders were sandblasted with 80 µm aluminium oxide or silica coated with CoJet Sand. Silane, and bonding agent and/or Clearfil Ceramic Primer were applied. One hundred thirty composite cement cylinders, comprising two dual-polymerizing (Variolink II and Panavia F) and two autopolymerizing (Rely X and Multilink) resins were bonded to the ceramic samples. A shear test was conducted, followed by an optical microscopy study to identify the location and type of failure, an electron microscopy study (SEM and TEM) and statistical analysis using the Kruskal-Wallis test for more than two independent samples and Mann-Whitney for two independent samples. Given the large number of combinations, Bonferroni correction was applied (α=0.001).
Results: Dual-polymerizing cements provided better adhesion values (11.7 MPa) than the autopolymerizing (7.47 MPa) (p-value M-W<0.001). The worst techniques were Lava TM + sandblasting + Silane + Rely X; Lava TM + sandblasting + Silane + Multilink and Lava TM + CoJet + silane + Multilink. Adhesive failure (separation of cement and ceramic) was produced at a lesser force than cohesive failure (fracture of cement) (p-value M-W<0.001). Electron microscopy confirmed that the surface treatments modified the zirconium-oxide ceramic, creating a more rough and retentive surface, thus providing an improved micromechanical interlocking between the cement and the ceramic.
Key words:Shear bond strength, silica coating, surface treatment, zirconia ceramics, phosphate monomer.
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Affiliation(s)
- Juan-Luis Román-Rodríguez
- Occlusion and Prosthodontic Teaching Unit, Department of Stomatology, University of Valencia, Edificio Clínica Odontológica, C/ Gascó Oliag No 1, 46010 Valencia, Spain.
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Augstin-Panadero R, Fons-Font A, Roman-Rodriguez JL, Granell-Ruiz M, del Rio-Highsmith J, Sola-Ruiz MF. Zirconia versus metal: a preliminary comparative analysis of ceramic veneer behavior. INT J PROSTHODONT 2012; 25:294-300. [PMID: 22545261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
PURPOSE Clinical studies have revealed a high rate of fracture for porcelain-veneered zirconia-based restorations that varies between 6% and 15% over a 3- to 5-year period. These are high values compared to the 4% fracture rate shown by conventional metal-ceramic restorations over 10 years. To date, little in vitro research has been carried out on the fracture resistance of the new generation of ceramic crowns. The aims of this study were to develop preliminary research on the mechanical failure behavior of three types of porcelain-veneered crowns with zirconia cores when subjected to static compressive loading and to analyze fracture characteristics using scanning electron microscopy (SEM). MATERIALS AND METHODS Eighty individual full-coverage crowns were studied: 60 crowns with a zirconia core and 20 with a metal core (control). RESULTS Values obtained in compressive testing were as follows: ZirPress: 1,818.01 N, ZirCAD: 1,773.92 N, Lava: 2,210.95 N, and metal-ceramic (control): 2,310.49 N. SEM analysis revealed that 71.66% of zirconia-based restoration mechanical failures were cohesive, while 100% of mechanical failures for metal-ceramic restorations were adhesive. CONCLUSIONS The mechanical behavior of the porcelain veneering on a zirconia core is more fragile than that on metal-ceramic crowns, and when load forces exerted on these restorations lead to mechanical failure, this will occur in the interior of the porcelain veneering.
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Granell-Ruiz M, Fons-Font A, Labaig-Rueda C, Martínez-González A, Román-Rodríguez JL, Solá-Ruiz MF. A clinical longitudinal study 323 porcelain laminate veneers. Period of study from 3 to 11 years. Med Oral Patol Oral Cir Bucal 2010; 15:e531-7. [PMID: 20038893 DOI: 10.4317/medoral.15.e531] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2009] [Accepted: 11/26/2009] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE The objective of this study was to evaluate the clinical results of 323 porcelain laminate veneers over a period of 3 to 11 years. MATERIAL AND METHOD This study included 70 patients, aged between 18 and 74 years. Of the 323 total veneers, 124 were of a simple design and 199 were of a functional design. The condition of the soft tissues and hygiene, in addition to the condition of the abutment teeth, the restorations and patient satisfaction were all clinically examined. In carrying out the statistical analysis, a descriptive approach was taken in analyzing the data. The Kaplan Meier method was used for statistically analyzing the survival rates of the porcelain laminate veneers. RESULTS Analysis of the soft tissue revealed marginal recession in 7.7% of the cases, and in 21.6% of the cases, bleeding was detected on probing. Analysis of the condition of the abutment teeth revealed secondary caries and hypersensitivity in 3.1% of the cases, and changes in pulp vitality were observed in 2.8% of the cases. In studying the condition of the restorations, marginal integrity was observed to be excellent in 98% of the cases, slight marginal pigmentation was present in 39.3% of the cases, fractures were present in 4% of the cases and decementation in 9% of the cases. The degree of patient satisfaction was considered to be excellent in 97.1% of the cases. CONCLUSIONS Porcelain laminate veneers are a predicable treatment option that offer excellent results.
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Affiliation(s)
- Maria Granell-Ruiz
- U.D. Dental Prosthesis and Occlusion, Department of Stomatology, University of Valencia, Spain.
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Roman-Rodriguez JL, Roig-Vanaclocha A, Fons-Font A, Granell-Ruiz M, Sola-Ruiz MF, Bruguera-Alvarez A. Full maxillary rehabilitation with an all-ceramic system. Med Oral Patol Oral Cir Bucal 2010; 15:e523-5. [DOI: 10.4317/medoral.15.e523] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2009] [Accepted: 09/11/2009] [Indexed: 11/05/2022] Open
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Poveda-Roda R, Bagán JV, Jiménez-Soriano Y, Fons-Font A. Retrospective study of a series of 850 patients with temporomandibular dysfunction (TMD). Clinical and radiological findings. Med Oral Patol Oral Cir Bucal 2009; 14:e628-34. [PMID: 19680187 DOI: 10.4317/medoral.14.e628] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2009] [Accepted: 06/22/2009] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To define the clinical and radiological characteristics of the four most common presentations of temporomandibular dysfunction-myofascial pain (MFP), disc displacement with reduction (DDWR), disc displacement without reduction (DDWoR), and osteoarthrosis (OR)-and to identify the differences among them. MATERIAL AND METHODS The study comprised a series of 850 patients (121 males and 729 females) seen between May 2003 and December 2006 in Valencia University General Hospital (Valencia, Spain) for temporomandibular joint disease (TMJD). An analysis was made of the possible etiological factors (stress, traumatisms, sleep disturbances, parafunctional habits, reason for consultation), possible pain sensations in response to palpation of the masticatory muscles, joint sounds, etc. A panoramic X-ray study was made on a routine basis, and in some patients (n = 54) the study was completed with a magnetic resonance imaging scan of the temporomandibular joints and related tissues. The differences between qualitative variables were examined by means of the chi-square test with R x C contingency tables and the Z-test, while quantitative variables were contrasted by analysis of variance (ANOVA) and post hoc testing (Scheffe). RESULTS The variables showing statistically significant differences among the four diagnostic categories were: patient age, sleep disturbances, stress, parafunctional habits, nibbling on hard objects and "other parafunctions", reason for consultation, mandibular movements, "non-evaluable" molar and canine relationship, ligament hyperlaxity, and panoramic X-ray alterations.
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Roman-Rodriguez JL, Roig-Vanaclocha A, Fons-Font A, Granell-Ruiz M, Sola-Ruiz MF, Amigo-Borras V, Busquets-Mataix D, Vicente-Escuder A. In vitro experimental study of bonding between aluminium oxide ceramics and resin cements. Med Oral Patol Oral Cir Bucal 2009; 15:e95-100. [DOI: 10.4317/medoral.15.e95] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2009] [Accepted: 08/12/2009] [Indexed: 11/05/2022] Open
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Fons-Font A, Solá-Ruíz MF, Granell-Ruíz M, Labaig-Rueda C, Martínez-González A. Choice of ceramic for use in treatments with porcelain laminate veneers. Med Oral Patol Oral Cir Bucal 2006; 11:E297-302. [PMID: 16648772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2023] Open
Abstract
Porcelain laminate veneers (PLVs) have been used for over two decades to treat esthetic and/or functional problems, particularly in the anterior sector. A range of dental ceramic materials are presently available on the market for these treatments, though with very different characteristics in terms of the composition, optic properties and manufacturing processes involved. As a result, selection of the material best suited for the management of each individual patient may prove complicated. The present study proposes a simple system for selecting the most appropriate ceramic material, based on the two variables that most influence the esthetic outcome: the intrinsic characteristics of the substrate tooth, and the characteristics of the ceramic material in terms of resistance and optic properties.
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Affiliation(s)
- Antonio Fons-Font
- Prosthodontics and Occlusion Teaching Unit, Department of Stomatology, Valencia University Medical and Dental School, Spain.
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Martínez-González A, Amigó-Borrás V, Fons-Font A, Selva-Otaolaurruchi E, Labaig-Rueda C. Response of three types of cast posts and cores to static loading. Quintessence Int 2001; 32:552-60. [PMID: 11495567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
OBJECTIVE An analysis is made of the influence of continuous compression loading on different types of cast posts and cores and its effects on the crowns and teeth. METHOD AND MATERIALS Thirty extracted maxillary canines were prepared and divided into three groups (n = 10) according to the type of cast posts and cores used for restoration: chrome-nickel alloy, acetalic resin, and IPS-Empress porcelain. Metallic cast crowns were luted onto the cores. The specimens were evaluated with an Instron testing machine at an angulation of 45 degrees and a forward speed of 0.5 mm/min. After testing, the specimens were sectioned along the axis and examined under x40 magnification. RESULTS Mean load resistance of the restorations until fracture was 2,120 N, 1,491 N, and 2,139 N in the chrome-nickel, IPS-Empress ceramic, and acetalic resin groups, respectively. CONCLUSION Significant differences in resistance were observed between metal and porcelain and between resin and porcelain. Microscopically, the apical portion was found to be most affected by fracture and compromised the teeth subjected to chrome-nickel restorations. The metal cast posts and cores exhibited different angulations, while the ceramic restorations showed cracks. The acetalic resin cast posts and cores presented no fractures.
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Affiliation(s)
- A Martínez-González
- Prosthodontics and Occlusion Teaching Unit, Valencia University Medical and Dental School, Spain
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