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Fouda H, Hassanein OE, Saber S, Haridy MF, Baz ME, Ahmed HS, Abuelezz A. Two-year clinical performance of indirect resin composite restorations in endodontically treated teeth with different cavity preparation designs: a randomized clinical trial. BMC Oral Health 2024; 24:1009. [PMID: 39210360 PMCID: PMC11363545 DOI: 10.1186/s12903-024-04725-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 08/08/2024] [Indexed: 09/04/2024] Open
Abstract
TRIAL DESIGN This is a randomized, controlled, superiority, double-blinded, parallel-group, two-arms trial with an allocation ratio of 1:1. This study aimed to assess whether the cavity design could affect the clinical performance of the CAD/CAM generated indirect resin composite restoration in endodontically treated teeth (ETT) evaluated using the Modified USPHS criteria after a two-year follow up. METHODS A total of 30 participants who underwent endodontic treatment for MOD cavities in permanent molars were divided randomly into two parallel groups (n = 30 restorations) according to the performed cavity design to group 1 in which there was no cuspal reduction (inlay) and group 2 in which cuspal reduction was performed (overlay). All pulp chambers were filled with bulk fill flowable composite, and the cavities were prepared following the criteria of the cavities for indirect restorations and restored using nano-hybrid composite resin blocks (Brilliant, Coltene, Switzerland). The restorations were evaluated using the modified USPHS criteria at baseline, six months, one-year and two years follow-up visits. For qualitative data, frequencies (n) and percentages (%) were used to display the data, while mean and standard deviation (SD) were used for quantitative data. The normality of the data was evaluated using the Shapiro-Wilk and Kolmogorov-Smirnov tests. For every test, P ≤ 0.05 was used as the significance threshold. RESULTS Twenty-six individuals completed the follow-up period after receiving the assigned intervention.The inter-group comparison showed that, at the 6- months and 12- months observation points, the overlay design had significantly better marginal adaptation, less incidence of discoloration or tooth/restoration fracture, and similar marginal integrity and caries incidence to the inlay design. After 24- months, the overlay design still had better marginal adaptation, less incidence of discoloration or tooth/restoration fracture and less caries incidence in comparison to the inlay design, while there was no difference in the marginal integrity between either design. CONCLUSIONS AND CLINICAL RELEVANCE Cuspal reduction in endodontically treated teeth showed better clinical performance than the cusp preservation thus, the former is more reliable.
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Affiliation(s)
- Hoda Fouda
- Conservative Dentistry Department, Faculty of Dentistry, The British University in Egypt, Cairo, Egypt.
| | | | - Shehabeldin Saber
- Endodontic Department, Faculty of Dentistry, The British University in Egypt, Cairo, Egypt
| | - Mohamed Fouad Haridy
- Conservative Dentistry Department, Faculty of Dentistry, The British University in Egypt, Cairo, Egypt
- Conservative Dentistry Department, Faculty of Dentistry, Cairo University, Giza, Egypt
| | - Maha El Baz
- Conservative Dentistry Department, Faculty of Dentistry, Cairo University, Giza, Egypt
| | - Hend Sayed Ahmed
- Conservative Dentistry Department, Faculty of Dentistry, The British University in Egypt, Cairo, Egypt
- Conservative Dentistry Department, Faculty of Dentistry, Cairo University, Giza, Egypt
| | - Ahmed Abuelezz
- Endodontic Department, Faculty of Dentistry, Misr International University, Cairo, Egypt
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Elmoselhy HAS, Hassanien OES, Haridy MF, Salam El Baz MAE, Saber S. Two‑year clinical performance of indirect restorations fabricated from CAD/CAM nano hybrid composite versus lithium disilicate in mutilated vital teeth. A randomized controlled trial. BMC Oral Health 2024; 24:101. [PMID: 38233771 PMCID: PMC10792922 DOI: 10.1186/s12903-023-03847-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 12/31/2023] [Indexed: 01/19/2024] Open
Abstract
TRIAL DESIGN This is a randomized, controlled, superiority, double-blinded, parallel-group, two-arms trial with an allocation ratio of 1:1. The aim of this trial was to compare the two-year clinical performance of partial indirect restorations fabricated from CAD/CAM nano-hybrid composite and ceramic lithium disilicate blocks using the modified USPHS criteria. METHODS In two parallel groups (n = 50 restorations), fifty participants having mutilated vital teeth with a minimum of two remaining walls were randomly enrolled in this trial and received indirect restorations of either nano-hybrid composite resin blocks (Brilliant, Coltene, Switzerland) or Lithium Disilicate (IPS Emax CAD). The restorations were assessed using modified USPHS criteria by two independent blinded assessors at baseline, six months, one-year and two years follow-up visits. Categorical and ordinal data were presented as frequencies and percentages. Categorical data were analyzed using the chi-square test. Ordinal data were analyzed using the Mann-Whitney U test for intergroup comparisons and Freidman's test followed by the Nemenyi post hoc test for intragroup comparisons. Numerical data were presented as mean and standard deviation values. They were analyzed for normality using the Shapiro-Wilk test. Data were found to be normally distributed and were analyzed using the independent t-test. The significance level was set at p ≤ 0.05 within all tests. RESULTS Forty-eight participants received the allocated intervention and completed the follow-up periods. There was a statistically significant difference between both tested materials for all USPHS criteria regarding Marginal integrity and Marginal discoloration at six-months Follow-up, but with no statistically significant difference at one- and two-year follow-up. CONCLUSIONS Both materials showed an acceptable, successful clinical performance along the two-years follow-up period. CLINICAL RELEVANCE The CAD/CAM nano-hybrid composite blocks are as reliable as Lithium disilicate for restoring mutilated vital teeth.
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Affiliation(s)
- Haneen Ahmad Shafik Elmoselhy
- Conservative Dentistry Department, Faculty of Dentistry, The British University in Egypt, Suez Desert Road El Sherouk City, Egypt
| | | | - Mohamed Fouad Haridy
- Conservative Dentistry, Faculty of Dentistry, Cairo University and The British University in Egypt, Suez Desert Road El Sherouk City, Egypt
| | | | - Shehabeldin Saber
- Endodontics, Faculty of Dentistry, Ain Shams University and The British University in Egypt, Suez Desert Road El Sherouk City, Egypt.
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Ohno H, Suzuki M, Shinkai K. The Effect of Laser Irradiation to Surfaces of Computer-Aided Design/Computer-Aided Fabrication Resin Blocks Coated with a Silane Coupling Agent on Bond Strength between the Resin Blocks and Composite Resin. Dent J (Basel) 2023; 11:290. [PMID: 38132428 PMCID: PMC10742938 DOI: 10.3390/dj11120290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/09/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023] Open
Abstract
The aim of this study was to investigate the effect of laser irradiation to computer-aided design/computer-aided fabrication (CAD/CAM) resin blocks coated with a silane coupling agent on the bond strength between resin blocks and composite resin. The CAD/CAM resin blocks used in this study were Cerasmart 300 (GC) and Vita Enamic (Vita); they were cut into plates and then subjected to a series of treatments. After processing with a silane coupling agent, treatment with a semiconductor laser was performed at 3.0, 5.0, and 7.0 W, followed by bonding procedures. The control group included those exposed to silane and bonded without laser application. After bonding, a mold with a simulated cavity was formed on the specimen and filled with flowable composite resin, and they were stored for 24 h or stressed by thermal cycling for subsequent testing that assessed the shear bond strength (n = 10). The results revealed that the bond strength was significantly enhanced by laser irradiation after applying a silane coupling agent (p < 0.03), whereas significant increase was not detected between the materials (p > 0.05). Particularly, 7 W laser irradiation had a significant increase on the bond strength between the composite resin and Cerasmart block after thermal cycling (p = 0.009). The SBS of the composite resin to CAD/CAM resin blocks was significantly enhanced by laser irradiation after silane coupling agent application.
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Affiliation(s)
- Hiroshi Ohno
- Advanced Operative Dentistry, Graduate School of Life Dentistry at Niigata, The Nippon Dental University, Niigata 951-8580, Japan;
| | - Masaya Suzuki
- Department of Operative Dentistry, School of Life Dentistry at Niigata, The Nippon Dental University, Niigata 951-8580, Japan;
| | - Koichi Shinkai
- Advanced Operative Dentistry, Graduate School of Life Dentistry at Niigata, The Nippon Dental University, Niigata 951-8580, Japan;
- Department of Operative Dentistry, School of Life Dentistry at Niigata, The Nippon Dental University, Niigata 951-8580, Japan;
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Toma FR, Moleriu LC, Porojan L. Micro-CT Marginal and Internal Fit Evaluation of CAD/CAM High-Performance Polymer Onlay Restorations. Polymers (Basel) 2023; 15:polym15071715. [PMID: 37050329 PMCID: PMC10096728 DOI: 10.3390/polym15071715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/20/2023] [Accepted: 03/27/2023] [Indexed: 04/14/2023] Open
Abstract
(1) Background: The use of high-performance polymers for fixed restorations requires additional studies regarding their adaptability and processing with CAD/CAM technology. This in vitro study aims to assess the marginal and internal fit of PEEK and PEKK materials using microcomputed tomography. (2) Methods: Twenty-four (n = 8) MOD onlays made of PEKK (Pekkton ivory), unmodified PEEK (Juvora medical), and modified PEEK (BioHPP) were investigated. A typodont mandibular left first molar was scanned to achieve 24 resin, 3D printed abutment teeth. The onlays were fabricated with a five-axis milling machine, and after cementation of the specimens, the marginal (MG) and internal gaps (IG) were evaluated at twelve points in the mesio-distal section and thirteen points in the bucco-lingual section using microcomputed tomography. For statistical data analysis, Wilcoxon signed-rank/paired Student t-Test, Mann-Whitney/unpaired Student t-Test, and one-way ANOVA test were applied. (3) Results: Significant differences (p < 0.05; α = 0.05) were reported between the MG and IG for each material for all three polymers and also among two materials in terms of the MG and IG (except Juvora-BioHPP). The highest IG values were recorded in angular areas (axio-gingival line angle) in the mesio-distal section for all the polymers. (4) Conclusions: For all the materials, MG < IG. The type of polymer influenced the adaptability; the lowest marginal and internal gap mean values were recorded for BioHPP. The analyzed polymer used for onlays are clinically acceptable in terms of adaptability.
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Affiliation(s)
- Flavia Roxana Toma
- Department of Dental Prostheses Technology (Dental Technology), Center for Advanced Technologies in Dental Prosthodontics, Faculty of Dental Medicine, "Victor Babeș" University of Medicine and Pharmacy Timișoara, Eftimie Murgu Sq. No. 2, 300041 Timisoara, Romania
| | - Lavinia Cristina Moleriu
- Department of Functional Science, "Victor Babeș" University of Medicine and Pharmacy Timișoara, Eftimie Murgu Sq. No. 2, 300041 Timisoara, Romania
| | - Liliana Porojan
- Department of Dental Prostheses Technology (Dental Technology), Center for Advanced Technologies in Dental Prosthodontics, Faculty of Dental Medicine, "Victor Babeș" University of Medicine and Pharmacy Timișoara, Eftimie Murgu Sq. No. 2, 300041 Timisoara, Romania
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Güleç C, Sarıkaya I. The influence of aging on the fracture load of milled monolithic crowns. BMC Oral Health 2022; 22:516. [PMCID: PMC9675227 DOI: 10.1186/s12903-022-02529-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 10/24/2022] [Indexed: 11/21/2022] Open
Abstract
Background This in-vitro study was conducted to assess the effect of aging on the fracture load of molar crowns fabricated with monolithic CAD/CAM materials. Methods The crown restorations were produced from Cerasmart, Vita Enamic, and IPS e.max CAD blocks. Aging was applied to the 10 samples each of monolithic CAD/CAM materials (n = 10). Dual-axis chewing simulator (50 N, 1.1 Hz, lateral movement: 1 mm, mouth opening: 2 mm, 1,200,000 cycles) and thermocycling (± 5–55 °C, 6000 cycles) were applied as an aging procedure. 10 samples each of monolithic CAD/CAM materials without aging (n = 10) were considered the control group. 6 tested groups were obtained. Then, all samples were evaluated in a universal testing machine to determine the fracture loading values’. Results There was not a statistically significant difference between the fracture load values before and after aging for all samples of Cerasmart, Vita Enamic, and IPS e.max CAD (p > 0.005). In a comparison of the monolithic materials together, a statistically significant difference was found between the fracture load values of IPS e.max CAD and Vita Enamic crowns before aging (p = 0.02). Also, Vita Enamic crowns (1978,71 ± 364,05 N) were found different from the IPS e.max CAD (p = 0.005) and Cerasmart crowns (p = 0.041) after aging. Conclusions Dynamic aging with 1.200.000 cycles was found to have no effect to fracture loading on milled Cerasmart, Vita Enamic, and IPS e.max CAD monolithic crowns.
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Affiliation(s)
- Ceyda Güleç
- grid.411550.40000 0001 0689 906XDepartment of Prosthodontics, Faculty of Dentistry, Tokat Gaziosmanpasa University, Ali Şevki Erek Campus, 60100 Tokat, Turkey
| | - Işıl Sarıkaya
- grid.411550.40000 0001 0689 906XDepartment of Prosthodontics, Faculty of Dentistry, Tokat Gaziosmanpasa University, Ali Şevki Erek Campus, 60100 Tokat, Turkey
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Fathy H, Hamama HH, El-Wassefy N, Mahmoud SH. Clinical performance of resin-matrix ceramic partial coverage restorations: a systematic review. Clin Oral Investig 2022; 26:3807-3822. [PMID: 35320383 PMCID: PMC9072524 DOI: 10.1007/s00784-022-04449-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 03/12/2022] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To evaluate clinical performance of the new CAD/CAM resin-matrix ceramics and compare it with ceramic partial coverage restorations. MATERIALS AND METHODS An electronic search of 3 databases (The National Library of Medicine (MEDLINE/PubMed), Scopus, and the Cochrane Central Register of Controlled Trials) was conducted. English clinical studies published between 2005 and September 2020 that evaluated the clinical performance of CAD/CAM resin-matrix ceramics inlays, onlays, or overlays were selected. The primary clinical question was applied according to PICOS strategy (Population, Intervention, Comparison, Outcome, Study design). The included studies were individually evaluated for risk of bias according to the modified Cochrane Collaboration tool criteria. RESULTS A total of 7 studies were included according to the established inclusion and exclusion criteria. From the included studies, 6 were randomized clinical trials while one study was longitudinal observational study without control group. According to the results of the included studies, the success rate of CAD/CAM resin-based composite ranged from 85.7 to 100% whereas the success rate reported for ceramic partial coverage restorations ranged from 93.3 to 100%. Fractures and debondings are found to be the most common cause of restorations failure. CONCLUSION CAD/CAM resin-based composite can be considered a reliable material for partial coverage restorations with clinical performance similar to glass ceramic restorations. However, this result needs to be confirmed in long-term evaluations. CLINICAL RELEVANCE CAD/CAM resin-based composites provide a potential alternative to ceramic indirect restorations. However, clinicians must be aware of the lake of knowledge regarding long-term outcome.
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Affiliation(s)
- Hanan Fathy
- Operative Dentistry Department, Faculty of Dentistry, Mansoura University, Algomhoria St, Mansoura City, 35516, Egypt
| | - Hamdi H Hamama
- Operative Dentistry Department, Faculty of Dentistry, Mansoura University, Algomhoria St, Mansoura City, 35516, Egypt.
| | - Noha El-Wassefy
- Dental Biomaterials Science Dept, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Salah H Mahmoud
- Operative Dentistry Department, Faculty of Dentistry, Mansoura University, Algomhoria St, Mansoura City, 35516, Egypt
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Ibrahim SH, Amr H, Hassan AA, Elzohairy A. Internal fit evaluation of indirect restorations fabricated from CAD/CAM composite blocks versus ceramic blocks in badly broken teeth using cone beam CT (CBCT): double-blinded randomized clinical trial. Heliyon 2022; 8:e09466. [PMID: 35647344 PMCID: PMC9130535 DOI: 10.1016/j.heliyon.2022.e09466] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 06/14/2021] [Accepted: 05/12/2022] [Indexed: 11/29/2022] Open
Abstract
Objective The restoration durability is essentially governed by optimum marginal integrity of an indirect restoration that is obtained and maintained by essential factors. This study aimed to evaluate the internal gap of indirect restorations fabricated from CAD/CAM composite blocks versus ceramic blocks in badly broken teeth using cone beam CT (CBCT) to determine their internal fit accuracy over the cast. Materials and methods Fifty-four participants were allocated into two groups: composite blocks or ceramic blocks. The trial participants and assessors were blinded to the material assignment, whereas the operator was not. Cavity preparation was performed followed by cavity optimization and impression taking. The produced master cast was scanned, restoration was designed using Exocad 2019 software and the final restoration was milled. The restoration was doubled-checked on the cast for internal fit using cone beam computed tomography (CBCT), and intraorally for interproximal contact and marginal adaptation before final cementation. CBCT measurements were collected and statistically analyzed. Restoration was cemented with resin cement and was immediately assessed clinically, then after one year and two years of follow-up periods. Results Results of an independent t-test revealed Composite blocks samples (0.25mm ± 0.03) to have a significantly better adaptation than ceramic blocks samples (0.29 mm ± 0.04) (p = 0.008). Conclusions Both materials have acceptable internal adaptation with a noticed difference reflected in their clinical performance. Clinical relevance Both indirect esthetic CAD/CAM restorations exhibit acceptable internal and marginal adaptation in posterior teeth however, composite blocks have a better adaptation than ceramic blocks. Trial registration This trial was registered in clinicaltrials.gov (NCT04784676).
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Canatan S, Oz FD, Bolay S. A randomized, controlled clinical evaluation of two resin cement systems in the adhesion of CAD/CAM-fabricated resin nanoceramic restorations: 18-month preliminary results. J ESTHET RESTOR DENT 2022; 34:1005-1014. [PMID: 35388956 DOI: 10.1111/jerd.12910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 03/18/2022] [Accepted: 03/21/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The purpose of this clinical study was to evaluate the performance of two different adhesive resin cement systems in the cementation of inlay/onlay restorations produced from resin nanoceramic blocks using the CAD/CAM system. MATERIALS AND METHODS A total of 70 inlay/onlay restorations made from Cerasmart (GC, Tokyo, Japan) resin nanoceramic blocks using CEREC Omnicam (Sirona Dental, Bensheim, Germany) were placed in 53 patients. The restorations were cemented with RelyX U200 Automix (3M ESPE, Seefeld, Germany) self-adhesive resin cement (RXU) after selective enamel etching or with G-CEM LinkForce (GC, Tokyo, Japan) adhesive resin cement (GCL) in combination with a universal adhesive (G-Premio Bond) in selective etch mode. At baseline and after 6, 12, and 18 months, restorations were examined by two calibrated clinicians according to modified USPHS criteria. The data were analyzed using Chi-square (χ2 ) test and Friedman test (p < 0.05). RESULTS After 18 months, two teeth at RXU group were endodontically treated due to hypersensitivities. At GCL group, three restorations were lost due to debondings (2) and ceramic fracture (1). The survival rates of RXU (94.3%) and GCL group (91.4%) exhibited no statistically significant difference (p = 0.661). No significant differences were detected for surface texture, secondary caries, anatomic form, color match, marginal discoloration, marginal integrity, interproximal contacts, and patient satisfaction (p > 0.05). CONCLUSIONS The two resin cement systems showed acceptable clinical performance for the cementation of resin nanoceramic CEREC Omnicam inlay/onlay restorations. CLINICAL SIGNIFICANCE Resin nanoceramic restorations fabricated using CEREC Omnicam and cemented with either a self-adhesive or a universal adhesive/resin cement system demonstrated clinically acceptable results for posterior teeth in a single visit.
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Affiliation(s)
| | - Fatma Dilsad Oz
- Department of Restorative Dentistry, Hacettepe University, Ankara, Turkey
| | - Sukran Bolay
- Department of Restorative Dentistry, Hacettepe University, Ankara, Turkey
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Galiatsatos A, Galiatsatos P, Bergou D. Clinical Longevity of Indirect Composite Resin Inlays and Onlays: An Up to 9-Year Prospective Study. Eur J Dent 2021. [DOI: https://doi.org/10.1055/s-0041-1735420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Abstract
Objective This clinical study evaluated the clinical performance of composite resin inlays and onlays over 9 years.
Materials and Methods Sixty composite resin inlays and onlays were placed in 32 patients, aged 20 to 60 years, by a single operator using the same clinical procedure. The restorations were examined for fracture rate; esthetics; and patient acceptance and marginal integrity, including caries, marginal discoloration, tooth integrity, and surface texture. All restorations were evaluated at the time of placement and 3, 6, and 9 years after placement by using the modified U.S. Public Health Service criteria.
Results At the 3-year follow-up, an Alpha score was given to 88.4% of restorations, while a Bravo score was given to the remaining 11.6%. There was not any failure. At the 6-year follow-up, the success rate of the restorations was 100% without failure. None of the restorations was scored with Delta (D). An Alpha score was given to 60% of the restorations, a Bravo score was assigned to 35%, and a Charlie score was 5% of the restorations. Overall, the success rate of the restorations at 9-year follow-up was 85% and the failure rate was 15%. An Alpha score was given to 15% of the restorations, a Bravo score was given to 50%, a Charlie score was assigned to 20%, and a D score was given to 15% of the restorations.
Conclusion Indirect resin composite inlays and onlays showed acceptable long-term clinical results. The success rate of the restorations at 9-year follow-up was 85% and the failure rate was 15%.
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Affiliation(s)
- Aristidis Galiatsatos
- Division of Dental Technology, Department of Biomedical Sciences, University of West Attica, Athens, Greece
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Galiatsatos A, Galiatsatos P, Bergou D. Clinical Longevity of Indirect Composite Resin Inlays and Onlays: An Up to 9-Year Prospective Study. Eur J Dent 2021; 16:202-208. [PMID: 34749421 PMCID: PMC8890907 DOI: 10.1055/s-0041-1735420] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
OBJECTIVE This clinical study evaluated the clinical performance of composite resin inlays and onlays over 9 years. MATERIALS AND METHODS Sixty composite resin inlays and onlays were placed in 32 patients, aged 20 to 60 years, by a single operator using the same clinical procedure. The restorations were examined for fracture rate; esthetics; and patient acceptance and marginal integrity, including caries, marginal discoloration, tooth integrity, and surface texture. All restorations were evaluated at the time of placement and 3, 6, and 9 years after placement by using the modified U.S. Public Health Service criteria. RESULTS At the 3-year follow-up, an Alpha score was given to 88.4% of restorations, while a Bravo score was given to the remaining 11.6%. There was not any failure. At the 6-year follow-up, the success rate of the restorations was 100% without failure. None of the restorations was scored with Delta (D). An Alpha score was given to 60% of the restorations, a Bravo score was assigned to 35%, and a Charlie score was 5% of the restorations. Overall, the success rate of the restorations at 9-year follow-up was 85% and the failure rate was 15%. An Alpha score was given to 15% of the restorations, a Bravo score was given to 50%, a Charlie score was assigned to 20%, and a D score was given to 15% of the restorations. CONCLUSION Indirect resin composite inlays and onlays showed acceptable long-term clinical results. The success rate of the restorations at 9-year follow-up was 85% and the failure rate was 15%.
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Affiliation(s)
- Aristidis Galiatsatos
- Division of Dental Technology, Department of Biomedical Sciences, University of West Attica, Athens, Greece
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Rajamani VK, Reyal SS, Gowda EM, Shashidhar MP. Comparative prospective clinical evaluation of computer aided design/ computer aided manufacturing milled BioHPP PEEK inlays and Zirconia inlays. J Indian Prosthodont Soc 2021; 21:240-248. [PMID: 34380810 PMCID: PMC8425372 DOI: 10.4103/jips.jips_57_21] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Aim The aim of the present study was to clinically assess the performance of BioHPP PEEK material when used for inlay restoration and to compare it with widely used zirconia inlays. This clinical study was undertaken to evaluate their performance in terms of retention, colour matching, marginal discoloration, marginal adaptation, secondary caries, surface texture, wear-anatomic form, postoperative sensitivity and fracture resistance using the modified Ryge's criteria. Settings and Design In vivo - prospective clinical study. Material and Methods A total of 40 patients were selected based on inclusion and exclusion criteria requiring inlays. The patients were further divided in two groups: Group A - Consisted of 20 permanent maxillary and mandibular carious posterior teeth restored with BioHPP PEEK inlays and Group B - Consisted of 20 permanent maxillary and mandibular carious posterior teeth restored with CAD/CAM zirconia inlays (sintered monolithic zirconia, Zolid, Amann Girrbach AG, Koblach, Austria). Two prosthodontists, who were blinded to the study groups, evaluated the restorations. In cases of widely different scores, the observers re-evaluated the restorations and reached a consensus. Restorations were evaluated at the end of 1 week (base line), 3 months, 6 months, and 12 months, using modified Ryge's criteria. Statistical Analysis Used Chi- square' test, 'Fisher's exact' test and 'z' test. Results 90% of the BioHPP PEEK inlays were rated satisfactory in comparison to 95% of zirconia inlays. Sensitivity score was 10% in BioHPP PEEK inlays and 15% in zirconia inlays. No significant difference was encountered with other parameters in this study. Conclusion The BioHPP PEEK when used as indirect aesthetic restorations was found to be satisfactory with relatively low rate of fracture over an observation period of one year in comparison to zirconia inlays in posterior teeth. The BioHPP PEEK can be a suitable alternative with high level of accuracy in terms of retention, marginal quality and aesthetics.
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Affiliation(s)
- Vijaya Kumar Rajamani
- Department of Dental Surgery and Oral Health Sciences, Division of Prosthodontics and Crown & Bridge, Armed Forces Medical College, Pune, Maharashtra, India
| | - Sandeep Singh Reyal
- Department of Dental Surgery and Oral Health Sciences, Division of Prosthodontics and Crown & Bridge, Armed Forces Medical College, Pune, Maharashtra, India
| | - Eraiah Mahesh Gowda
- Department of Dental Surgery and Oral Health Sciences, Division of Prosthodontics and Crown & Bridge, Armed Forces Medical College, Pune, Maharashtra, India
| | - Muttige Parameshwara Shashidhar
- Department of Dental Surgery and Oral Health Sciences, Division of Prosthodontics and Crown & Bridge, Armed Forces Medical College, Pune, Maharashtra, India
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Irmak Ö, Demirel G, Aydın F, Görmüş T, Kolsuz ME. Radiopacity of resin-based CAD/CAM blocks assessed by areal grayscale pixel value measurement. J Oral Sci 2021; 63:227-230. [PMID: 33980768 DOI: 10.2334/josnusd.20-0500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
PURPOSE This study assessed radiopacity of resin-based computer-aided-design/computer-aided-manufacturing (CAD/CAM) materials by areal grayscale pixel value measurement. METHODS Radiopacities of six resin-based CAD/CAM block materials and resin composite were evaluated and compared to that of enamel and dentin. Specimens of 1-mm thickness were placed on photostimulable phosphor plate and irradiated with digital x-ray unit. On the radiographic image, regions of interests were determined for each specimen and areal grayscale pixel values were measured. Elemental analysis was performed with energy-dispersive x-ray spectroscopy (EDS) on field emission scanning electron microscope (FESEM) images of the specimens. Data were analyzed statistically (α = 0.05). RESULTS Radiopacity values of the restorative materials were significantly different from each other (P < 0.05). Radiopacity values of two resin-based CAD/CAM materials were significantly lower than that of dentin (P < 0.05). All tested restorative materials contain zirconium, three materials contain barium, and only resin composite contains lanthanum. CONCLUSION Four CAD/CAM materials with higher amounts of zirconia or barium (>18%) had radiopacity values significantly higher than the dentin; while two materials with lower amounts of zirconia (<4%) and/or no-barium, had radiopacity values significantly lower than the dentin. EDS analysis suggests materials containing elements with higher atom numbers such as zirconia and barium could exhibit higher radiopacity.
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Affiliation(s)
- Özgür Irmak
- Near East University, Faculty of Dentistry, Department of Restorative Dentistry
| | - Gülbike Demirel
- Ankara University, Faculty of Dentistry, Department of Restorative Dentistry
| | - Fulya Aydın
- Republic of Turkey Ministry of Health, 75th year Oral and Dental Health Hospital
| | - Tolga Görmüş
- General Directorate of Mineral Research and Exploration, Department of Mineral Analysis and Technology Laboratory of Mineralogy and Petrography Exploration Laboratory
| | - Mehmet E Kolsuz
- Ankara University Faculty of Dentistry, Department of Dentomaxillofacial Radiology
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Oz FD, Bolay S, Canatan S. A clinical evaluation of resin nanoceramic CEREC Omnicam restorations associated with several factors. J ESTHET RESTOR DENT 2020; 33:583-589. [PMID: 33283974 DOI: 10.1111/jerd.12691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 05/22/2020] [Accepted: 11/08/2020] [Indexed: 11/30/2022]
Abstract
PURPOSE The aim of this study was to assess the clinical performance of computer-aided design and computer-aided manufacturing resin nanoceramic posterior restorations fabricated by CEREC Omnicam system. MATERIALS AND METHODS Fifty-seven Lava Ultimate posterior restorations were placed in 44 patients by one operator. Restorations were cemented using a resin cement system (Duo-Link). The clinical performance of the restorations was evaluated with USPHS guidelines in a mean time of 45-month. Data were statistically analyzed using Kaplan-Meier and Log Rank (Mantel-Cox) tests (SPSS 22.0, α = 0.05). RESULTS Thirty-eight restorations in 26 patients were evaluated at recall examinations by two evaluators other than the clinician who had placed the restorations who were blinded to groups. The survival rates of Lava Ultimate were 86.8%. A total of 5 (13.2%) failures were found. After a mean time of 45-month survival rate of vital and non-vital teeth were 90 and 83.3% respectively. The failures were not significantly influenced by gender, tooth arch, restoration size, the treated region and vitality. CONCLUSION Chair-side posterior resin nanoceramic restorations were clinically successful restorations with a survival rate of 86.8% after a mean time of 45-month. CLINICAL SIGNIFICANCE Chair-side CAD/CAM resin nanoceramic restorations can be a successful choice for vital and non-vital teeth with acceptable survival rates.
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Affiliation(s)
- Fatma Dilsad Oz
- Department of Restorative Dentistry, Faculty of Dentistry, Hacettepe University, Altindag, Ankara, Turkey
| | - Sukran Bolay
- Department of Restorative Dentistry, Faculty of Dentistry, Hacettepe University, Altindag, Ankara, Turkey
| | - Simge Canatan
- Department of Restorative Dentistry, Faculty of Dentistry, Hacettepe University, Altindag, Ankara, Turkey
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Edelhoff D, Stimmelmayr M, Schweiger J, Ahlers MO, Güth JF. Advances in materials and concepts in fixed prosthodontics: a selection of possible treatment modalities. Br Dent J 2019; 226:739-748. [PMID: 31127218 DOI: 10.1038/s41415-019-0265-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The introduction of adhesive techniques in combination with translucent restorative materials has greatly influenced treatment concepts in fixed prosthodontics. Modern production technologies offer access to new polymer materials that provide innovative pre-treatment options for complex prosthetic rehabilitations. Additionally, computer-aided design and manufacturing (CAD/CAM) provides access to new ceramic types and thus extends the range of indications for metal-free restorative options. With these developments, important changes of treatment concepts in fixed prosthodontics have occurred which affect the professional life of dental practitioners with a focus on prosthetic dentistry. This article gives an overview of the advances in selected fields of fixed prosthodontics and provides support in material selection for different kinds of indications, from single-tooth restorations to fixed dental prostheses.
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Affiliation(s)
- Daniel Edelhoff
- Director and Chair, Department of Prosthetic Dentistry, University Hospital, LMU, Munich, Germany.
| | - Michael Stimmelmayr
- Associate Professor, Department of Prosthetic Dentistry, University Hospital, LMU, Munich, Germany
| | - Josef Schweiger
- Dental Technician, Head of Dental Laboratory, Department of Prosthetic Dentistry, University Hospital, LMU, Munich, Germany
| | - M Oliver Ahlers
- Department of Prosthetic Dentistry, Centre for Dental and Oral Medicine, University Medical Centre Hamburg-Eppendorf, University of Hamburg, Hamburg, Germany; Director, CMD-Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Jan-Frederik Güth
- Associate Professor, Department of Prosthetic Dentistry, University Hospital, LMU, Munich, Germany
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Dennison JB, Yaman P, Fasbinder DJ, Herrero AA. Repair or Observation of Resin Margin Defects: Clinical Trial After Five Years. Oper Dent 2019; 44:355-364. [PMID: 31216247 DOI: 10.2341/17-232-c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To assess the effectiveness of repair/resealing of stained composite margins as an alternative to controlled observation without treatment in a randomized clinical trial after five years. METHODS AND MATERIALS Each patient recruited had from one to three composite restorations with visible margin discoloration. Initially, the characteristics of each defect were recorded with direct vision through a surgical microscope at 20× magnification. Clinical evaluation was done by two independent examiners using modified USPHS criteria for color, margin discoloration, and margin adaptation. Each restoration was then randomly assigned to a control or treatment group. Control restorations were observed yearly for the presence of recurrent caries; treatment restorations were resealed by exposing the margin with a ¼ round bur, removing all interfacial stain, acid etching, placing an adhesive bonding agent, and a flowable composite to restore margin integrity. There were 152 patients recruited, with 360 restorations (180 control and 180 treatment). RESULTS At five years, 104 patients were recalled (68%) with 271 restorations (76%): 136 untreated control and 135 resealed restorations. At that time, 61 restorations had been lost or replaced for nonrelated reasons. Clinical evaluation of the remaining 210 restorations determined penetrating discoloration (control = 81%, resealed = 46%) and margin crevice formation (control = 21%, resealed = 11%). Recurrent caries was diagnosed cumulatively in only six control and five treatment restorations (<5%). Microscopically, 49 control restorations (49%) and 36 resealed restorations (33%) had crevice formation. Discoloration was distributed as follows: 9% vs 47% with no discoloration, 30% vs 33% in the composite, 49% vs 18% in the interface, and 12% vs 2% in tooth structure. CONCLUSIONS Resealing of restorations with margin discoloration reduced the occurrence of penetrating stain from 81% in controls to 46% in resealed margins and crevicing from 21% to 11% after five years. Both controlled observation and resealing of margins resulted in a similar very low incidence (<6%) of recurrent caries.
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NARUSE Y, TAKAGAKI T, MATSUI N, SATO T, ALI A, IKEDA M, NIKAIDO T, TAGAMI J. Effect of alumina-blasting pressure on adhesion of CAD/CAM resin block to dentin. Dent Mater J 2018; 37:805-811. [DOI: 10.4012/dmj.2017-237] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Yuki NARUSE
- Cariology and Operative Dentistry Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Tomohiro TAKAGAKI
- Cariology and Operative Dentistry Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Naoko MATSUI
- Cariology and Operative Dentistry Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Takaaki SATO
- Cariology and Operative Dentistry Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Alghamdi ALI
- Cariology and Operative Dentistry Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Masaomi IKEDA
- Oral Prosthetic Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Toru NIKAIDO
- Cariology and Operative Dentistry Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Junji TAGAMI
- Cariology and Operative Dentistry Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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Polymer-infiltrated ceramic CAD/CAM inlays and partial coverage restorations: 3-year results of a prospective clinical study over 5 years. Clin Oral Investig 2017; 22:1973-1983. [PMID: 29214376 DOI: 10.1007/s00784-017-2293-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 11/30/2017] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The aim of this prospective clinical 5-year study was to evaluate the long-term behavior of monolithic computer-aided design and computer-aided manufacturing (CAD/CAM)-fabricated minimally invasive polymer-infiltrated ceramic network (PICN) inlays and partial coverage restorations (PCR). MATERIAL AND METHODS Posterior teeth of 47 patients were restored with 103 restorations (45 inlays, 58 PCRs). After defect-oriented preparations, monolithic PICN restorations of VITA Enamic were fabricated with a CAD/CAM system (inEoS blue/CEREC inLab MCXL) and adhesively bonded (Variolink II). Clinical reevaluations were so far performed at baseline and 6, 12, 24, and 36 months after insertion according to modified United States Public Health Service (USPHS) criteria. Absolute failures were demonstrated by Kaplan-Meier survival rate and relative failures by Kaplan-Meier success rate. A logistic regression model was adjusted for modified USPHS criteria to investigate time and restoration effects (p < 0.05). RESULTS After an observation time of 3 years, survival rates were 97.4% for inlays and 95.6% for PCRs. Three restorations had to be replaced due to clinically unacceptable fractures. Secondary caries and debonding were not observed. The 3-year Kaplan-Meier success rate was 84.8% for inlays and 82.4% for PCRs. The decrease in marginal adaption (p = 0.0005), increase in marginal discoloration (p < 0.0001), and surface roughness (p = 0.0005) over time were significant. Color match and anatomic form were excellent. No significant differences were found between both types of restorations for survival (p = 0.716) and success rate (p = 0.431). CONCLUSIONS Minimally invasive PICN restorations showed a favorable clinical performance over an observation period of 36 months. However, clinical long-term data have to be awaited. CLINICAL RELEVANCE PICN restorations are a suitable treatment option for posterior inlays and PCRs.
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Zimmermann M, Koller C, Reymus M, Mehl A, Hickel R. Clinical Evaluation of Indirect Particle-Filled Composite Resin CAD/CAM Partial Crowns after 24 Months. J Prosthodont 2017; 27:694-699. [PMID: 28422359 DOI: 10.1111/jopr.12582] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/31/2016] [Indexed: 11/28/2022] Open
Abstract
PURPOSE Resin-based CAD/CAM compound materials might be promising for single-tooth restorations. Insufficient clinical data are available for this new material class. The purpose of this study was to describe initial clinical in vivo results for indirect particle-filled composite resin CAD/CAM restorations after 24 months. MATERIALS AND METHODS Indirect particle-filled composite resin restorations were fabricated with a CAD/CAM method (CEREC Bluecam intraoral scanner, CEREC MCXL milling unit) by calibrated dental students. Forty-two partial crown restorations were seated adhesively in 30 patients with caries lesions or insufficient restorations (baseline). Strict inclusion criteria were defined for the patient collective. Follow-up evaluation comprised 40 restorations after 12 months and 33 restorations after 24 months. Evaluation criteria were modified FDI criteria with grades (1) to (5). Rating with FDI criteria (5) was defined as clinical failure. Statistical analysis was performed with Wilcoxon-Test (p < 0.05). RESULTS The success rate of indirect particle-filled composite resin CAD/CAM restorations after 12 months was 95.0% with two debondings observed. The cumulative success rate for indirect particle-filled composite resin CAD/CAM restorations after 24 months was 85.7% with two tooth fractures and one debonding. Statistically significant differences were found for baseline and 24-month follow-up evaluation for anatomic form and marginal adaptation criterion examined in respect to FDI criteria guidelines (Wilcoxon-Test, p < 0.05). CONCLUSIONS This study demonstrates particle-filled composite resin CAD/CAM restorations having a clinical success rate of 85.7% after 24 months. Adhesive bonding procedures need to be ensured carefully. A longer clinical evaluation period is necessary to draw further conclusions.
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Affiliation(s)
- Moritz Zimmermann
- Department of Computerized Restorative Dentistry, Center of Dental Medicine, University of Zurich, Switzerland.,Department of Restorative Dentistry and Periodontology, Ludwig-Maximilians-University Munich, Germany
| | - Christina Koller
- Department of Restorative Dentistry and Periodontology, Ludwig-Maximilians-University Munich, Germany
| | - Marcel Reymus
- Department of Restorative Dentistry and Periodontology, Ludwig-Maximilians-University Munich, Germany
| | - Albert Mehl
- Department of Computerized Restorative Dentistry, Center of Dental Medicine, University of Zurich, Switzerland
| | - Reinhard Hickel
- Department of Restorative Dentistry and Periodontology, Ludwig-Maximilians-University Munich, Germany
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van den Breemer CRG, Özcan M, Cune MS, van der Giezen R, Kerdijk W, Gresnigt MMM. Effect of immediate dentine sealing on the fracture strength of lithium disilicate and multiphase resin composite inlay restorations. J Mech Behav Biomed Mater 2017; 72:102-109. [PMID: 28477520 DOI: 10.1016/j.jmbbm.2017.04.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 04/03/2017] [Accepted: 04/04/2017] [Indexed: 11/25/2022]
Abstract
PURPOSE Limited information is available on the effect of Immediate Dentin Sealing (IDS) on the fracture strength of indirect partial posterior restorations. This study evaluated the effect of IDS on the fracture strength and failure types of two indirect restorative materials. MATERIALS AND METHODS Standard MOD inlay preparations were made on sound molars (N=40, n=10 per group) and randomly divided into four groups to receive the inlay materials with and without the application of IDS: Group L-IDS-: Li2Si2O5 (Lithium disilicate, IPS e.max) without IDS; Group L-IDS+: Li2Si2O5 with IDS; Group MR-IDS-: Multiphase resin composite (MR, Lava Ultimate) without IDS; MR-IDS+: MR with IDS. Inlays made of L were etched with 5% hydrofluoric acid, and MR inlays were silica coated. After silanization, they were cemented using adhesive resin cement (Variolink Esthetic DC). The specimens were thermo-mechanically aged (1.2×106 cycles, 1.7Hz, 8000 cycles, 5-55°C) and then subjected to load to failure (1 mm/min). Failure types and locations of debondings were classified. Data were statistically analyzed using ANOVA, Mann Whitney U-test and Chi-square tests (α=0.05). Two-parameter Weibull distribution values including the Weibull modulus, scale (m) and shape (0), values were calculated. RESULTS After aging conditions, no apparent changes were observed in marginal integrity but occlusal wear facets were more common with MR than with L (p<0.001). Material type and the application of IDS significantly affected the results (p=0.013). While group L-IDS- showed the lowest mean fracture strength (1358±506N) among all groups (p<0.05), application of IDS significantly increased the results significantly (L-IDS+: 2035±403N) (p=0.006). MR groups with and without IDS, did not show significant difference (MR-IDS-: 1861±423, MR-IDS+: 1702±596 N) (p=0.498). When materials without IDS are compared, L showed significantly lower results than that of MR (p=0.035). With the application of IDS, no significant difference was noted between L and MR materials (p=0.160). Weibull distribution presented the highest shape (0) for L-IDS+ (5.66) compared to those of other groups (3.01-4.76). Neither the material type (p=0.830), nor the application of IDS (p=0.54) affected the severity of the failure types. In 95% of the cases, the IDS layer left adhered on the tooth surface after fracture tests. In groups where no IDS was used, resin cement remained on the tooth surface in 44% of the cases (p=0.001). No significant differences were observed between the materials with respect to cement remnants or IDS after fracture (p=0.880). The incidence of repairable failure types (83%) was more common with L than with MR (75%) material (p>0.05). CONCLUSION Immediate dentin sealing improves adhesion, and thereby the fracture strength of inlays made of lithium disilicate but not that multiphase resin composite.
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Affiliation(s)
- Carline R G van den Breemer
- University Medical Center Groningen, The University of Groningen, Center for Dentistry and Oral Hygiene, Department of Fixed and Removable Prosthodontics, Groningen, The Netherlands.
| | - Mutlu Özcan
- University Medical Center Groningen, The University of Groningen, Center for Dentistry and Oral Hygiene, Department of Fixed and Removable Prosthodontics, Groningen, The Netherlands; University of Zurich, Dental Materials Unit, Center for Dental and Oral Medicine, Clinic for Fixed and Removable Prosthodontics and Dental Materials Science, Zurich, Switzerland
| | - Marco S Cune
- University Medical Center Groningen, The University of Groningen, Center for Dentistry and Oral Hygiene, Department of Fixed and Removable Prosthodontics, Groningen, The Netherlands; St. Antonius Hospital Nieuwegein, Department of Oral and Maxillofacial Surgery, Prosthodontics and Special Dental Care, Nieuwegein, The Netherlands
| | - Rianne van der Giezen
- University Medical Center Groningen, The University of Groningen, Center for Dentistry and Oral Hygiene, Department of Fixed and Removable Prosthodontics, Groningen, The Netherlands
| | - Wouter Kerdijk
- University Medical Center Groningen, The University of Groningen, Center for Dentistry and Oral Hygiene, Department of Public and Individual Oral Health, Groningen, The Netherlands
| | - Marco M M Gresnigt
- University Medical Center Groningen, The University of Groningen, Center for Dentistry and Oral Hygiene, Department of Fixed and Removable Prosthodontics, Groningen, The Netherlands
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van de Sande FH, Collares K, Correa MB, Cenci MS, Demarco FF, Opdam N. Restoration Survival: Revisiting Patients' Risk Factors Through a Systematic Literature Review. Oper Dent 2016; 41:S7-S26. [PMID: 27689931 DOI: 10.2341/15-120-lit] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A literature review was conducted to investigate the influence of patient-related factors on restoration survival in posterior permanent teeth as well as to report the methods used to collect these factors. The selection of articles on longitudinal clinical studies investigating the survival of posterior restorations (except full crowns and temporary fillings) and including patient-related factors was performed by applying predefined criteria. The review was organized into two parts, the first describing how patient factors were assessed in the studies (n=45) and the second presenting the statistical significance (n=27) and size of the effect (n=11) of these factors on restoration survival. Patient-related factors mentioned in the studies included age; gender; caries risk; caries activity/severity; decayed, missing, filled teeth; number of restorations; oral hygiene; and bruxism, among others. Sixteen studies included the patient age or age range in the analysis, which was found to be significant in 47% of the studies. Regarding gender, four of 17 reports found a significant effect on survival, showing more failures for men in three studies. The caries risk profile or related variables were included in the analysis of 15 studies, and a significant effect on survival was reported for high-caries-risk individuals (or related variables) in 67% of these studies. Bruxism was also found to influence restoration survival in three of six studies where this variable was investigated. Some issues were found regarding the reporting of methods used to classify patients according to risk and were thoroughly discussed. In view of the information gathered in this review, the assessment of patient factors along with other variables should become part of clinical studies investigating restoration survival, since several of these factors were shown to influence the failure of restorations, regardless of the material type.
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Alharbi A, Ardu S, Bortolotto T, Krejci I. Stain susceptibility of composite and ceramic CAD/CAM blocks versus direct resin composites with different resinous matrices. Odontology 2016; 105:162-169. [PMID: 27456684 DOI: 10.1007/s10266-016-0258-1] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Accepted: 06/20/2016] [Indexed: 10/21/2022]
Abstract
To evaluate the stain susceptibility of CAD/CAM blocks and direct composite after long term exposure to various staining agents. 40 disk-shaped samples were fabricated from each of nine materials; six CAD/CAM (Vitablocs Mark II, Paradigm MZ100, Experimental Vita Hybrid Ceramic, Vita Enamic, Experimental Kerr and Lava Ultimate) and three direct composites (Filtek Supreme, Venus Diamond and Filtek Silorane). Samples were randomly divided into five groups (n = 8) according to different staining solutions (distilled water, tea, red wine, coffee and artificial saliva). Initial L*a*b* values were assessed using a calibrated digital spectrophotometer. Specimens were immersed in staining solutions and stored in an incubator at 37 °C for 120 days. L*a*b* values were assessed again and color change (∆E) was calculated as difference between recorded L*a*b* values. ANOVA, and Duncan test were used to identify differences between groups (α = 0.05). Significant differences in ∆E values were detected between materials (p = 0.000). Among all staining solutions, the highest ∆E value was observed with red wine. The new CAD/CAM blocks (Vita Enamic, Vita Hybrid Ceramic and Lava Ultimate) showed the highest resistance to staining compared to the MZ100 composite resin blocks. Filtek Silorane, a direct composite, showed high stain resistance values compared to CAD/CAM materials and other direct composites. Ceramic and composite CAD/CAM blocks had lower staining susceptibility than methacrylate based direct composite. Staining susceptibility of the new resin based CAD/CAM materials Vita Enamic and Lava Ultimate was comparable to feldspathic ceramic blocks (Vitablocs Mark II). Filtek Silorane showed promising results that were comparable to some CAD/CAM blocks.
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Affiliation(s)
- Amal Alharbi
- Section of Dental Medicine, Division of Cariology and Endodontology, University of Geneva, 19, rue Barthélemy-Menn, 1205, Geneva, Switzerland. .,Al-Nakheel Medical Center, Riyadh, Saudi Arabia.
| | - Stefano Ardu
- Section of Dental Medicine, Division of Cariology and Endodontology, University of Geneva, 19, rue Barthélemy-Menn, 1205, Geneva, Switzerland
| | - Tissiana Bortolotto
- Section of Dental Medicine, Division of Cariology and Endodontology, University of Geneva, 19, rue Barthélemy-Menn, 1205, Geneva, Switzerland
| | - Ivo Krejci
- Section of Dental Medicine, Division of Cariology and Endodontology, University of Geneva, 19, rue Barthélemy-Menn, 1205, Geneva, Switzerland
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Ender A, Bienz S, Mörmann W, Mehl A, Attin T, Stawarczyk B. Marginal adaptation, fracture load and macroscopic failure mode of adhesively luted PMMA-based CAD/CAM inlays. Dent Mater 2016; 32:e22-9. [DOI: 10.1016/j.dental.2015.11.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 12/08/2014] [Accepted: 11/30/2015] [Indexed: 01/05/2023]
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Nobuaki A, Keiichi Y, Takashi S. Effects of air abrasion with alumina or glass beads on surface characteristics of CAD/CAM composite materials and the bond strength of resin cements. J Appl Oral Sci 2016; 23:629-36. [PMID: 26814465 PMCID: PMC4716701 DOI: 10.1590/1678-775720150261] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 09/30/2015] [Indexed: 11/22/2022] Open
Abstract
Objective The study aimed to evaluate effects of air abrasion with alumina or glass beads on bond strengths of resin cements to CAD/CAM composite materials. Material and Methods CAD/CAM composite block materials [Cerasmart (CS) and Block HC (BHC)] were pretreated as follows: (a) no treatment (None), (b) application of a ceramic primer (CP), (c) alumina-blasting at 0.2 MPa (AB), (d) AB followed by CP (AB+CP), and (e) glass-beads blasting at 0.4 MPa (GBB) followed by CP (GBB+CP). The composite specimens were bonded to resin composite disks using resin cements [G-CEM Cerasmart (GCCS) and ResiCem (RC)]. The bond strengths after 24 h (TC 0) and after thermal cycling (TC 10,000 at 4–60°C) were measured by shear tests. Three-way ANOVA and the Tukey compromise post hoc tests were used to analyze statistically significant differences between groups (α=0.05). Results For both CAD/CAM composite materials, the None group exhibited a significant decrease in bond strength after TC 10,000 (p<0.05). AB showed significantly higher bond strength after TC 10,000 than the None group, while CP did not (p<0.05). GBB exhibited smaller surface defects than did AB; however, their surface roughnesses were not significantly different (p>0.05). The AB+CP group showed a significantly higher bond strength after TC 10,000 than did the AB group for RC (p<0.05), but not for GCCS. The GBB+CP group showed the highest bond strength for both thermal cyclings (p<0.05). Conclusions Air abrasion with glass beads was more effective in increasing bond durability between the resin cements and CAD/CAM composite materials than was using an alumina powder and a CP.
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Affiliation(s)
- Arao Nobuaki
- Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Yoshida Keiichi
- Clinic of Fixed Prosthodontics, Nagasaki University Hospital, Nagasaki, Japan
| | - Sawase Takashi
- Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
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Nejatidanesh F, Amjadi M, Akouchekian M, Savabi O. Clinical performance of CEREC AC Bluecam conservative ceramic restorations after five years—A retrospective study. J Dent 2015; 43:1076-1082. [DOI: 10.1016/j.jdent.2015.07.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 06/27/2015] [Accepted: 07/02/2015] [Indexed: 11/25/2022] Open
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Comparison of mechanical properties of three machinable ceramics with an experimental fluorophlogopite glass ceramic. J Prosthet Dent 2015; 114:440-6. [DOI: 10.1016/j.prosdent.2015.02.024] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 02/26/2015] [Accepted: 02/27/2015] [Indexed: 11/23/2022]
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Stawarczyk B, Eichberger M, Uhrenbacher J, Wimmer T, Edelhoff D, Schmidlin PR. Three-unit reinforced polyetheretherketone composite FDPs: influence of fabrication method on load-bearing capacity and failure types. Dent Mater J 2014; 34:7-12. [PMID: 25311236 DOI: 10.4012/dmj.2013-345] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
To investigate the influence of different fabrication methods of three-unit reinforced polyetheretherketone composite (PEEK/C) fixed dental prostheses (FDPs) on fracture load. Forty-five three-unit anatomically supported PEEK/C FDPs were fabricated as follows: i. milled using a CAD/CAM system from an industrially fabricated PEEK/C blank, ii. pressed from industrially fabricated PEEK/C pellets, and iii. pressed from granular PEEK/C. Fracture load was measured and data were statistically analysed (p<0.05). CAD/CAM fabricated FDPs (2,354 N) presented a higher mean fracture load than those pressed from granular PEEK/C material (1,738 N) (p<0.001). CAD/CAM milled FDPs and those pressed from PEEK/C-pellets showed spontaneous and brittle fractures near the pontic without deformation of the FDP. In contrast, granulate pressed FDPs showed some plastic deformation without fracture. CAD/CAM fabricated FDPs, and FDPs pressed from PEEK/C pellets showed higher Weibull moduli compared to FDPs pressed in granular form. Industrial pre-pressing of blanks (CAD/CAM/pellet) increased the stability and reliability of PEEK restorations.
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Affiliation(s)
- Bogna Stawarczyk
- Department of Prosthodontics, Dental School, Ludwig-Maximilians-University Munich
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Boitelle P, Mawussi B, Tapie L, Fromentin O. A systematic review of CAD/CAM fit restoration evaluations. J Oral Rehabil 2014; 41:853-74. [DOI: 10.1111/joor.12205] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/29/2014] [Indexed: 11/27/2022]
Affiliation(s)
- P. Boitelle
- Prosthodontic Department; Faculty of Dentistry; University Lille Nord de France; Lille France
- Biomaterials and Interfaces Research Unit (URB2i - EA 4462); Faculty of Dentistry; Paris Descartes Sorbonne Paris Cité; Montrouge France
| | - B. Mawussi
- Biomaterials and Interfaces Research Unit (URB2i - EA 4462); Faculty of Dentistry; Paris Descartes Sorbonne Paris Cité; Montrouge France
- Faculty of Mechanical Engineering Paris 13 University; Sorbonne Paris Cité; Saint Denis France
| | - L. Tapie
- Biomaterials and Interfaces Research Unit (URB2i - EA 4462); Faculty of Dentistry; Paris Descartes Sorbonne Paris Cité; Montrouge France
- Faculty of Mechanical Engineering Paris 13 University; Sorbonne Paris Cité; Saint Denis France
| | - O. Fromentin
- Biomaterials and Interfaces Research Unit (URB2i - EA 4462); Faculty of Dentistry; Paris Descartes Sorbonne Paris Cité; Montrouge France
- Prosthodontic Department; Faculty of Dentistry; Paris Diderot; Sorbonne Paris Cité - Hospital Rothschild (AP-HP); Paris France
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Liu X, Fok A, Li H. Influence of restorative material and proximal cavity design on the fracture resistance of MOD inlay restoration. Dent Mater 2014; 30:327-33. [DOI: 10.1016/j.dental.2013.12.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Revised: 09/07/2013] [Accepted: 12/13/2013] [Indexed: 11/17/2022]
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Stawarczyk B, Stich N, Eichberger M, Edelhoff D, Roos M, Gernet W, Keul C. Long-term tensile bond strength of differently cemented nanocomposite CAD/CAM crowns on dentin abutment. Dent Mater 2014; 30:334-42. [PMID: 24418627 DOI: 10.1016/j.dental.2013.12.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 11/13/2013] [Accepted: 12/17/2013] [Indexed: 10/25/2022]
Abstract
OBJECTIVES To test the tensile bond strength of luted composite computer aided design/computer aided manufacturing (CAD/CAM) crowns after use of different adhesive systems combined with different resin composite cements on dentin abutments. METHODS Human molars (n=200) were embedded in acrylic resin, prepared in a standardized manner and divided into 20 groups (n=10). The crowns were treated as follows: (i) Monobond Plus/Heliobond (MH), (ii) Ambarino P60 (AM), (iii) Visio.link (VL), (iv) VP connect (VP), and (v) non-treated as control groups (CG) and luted with Variolink II (VAR) or Clearfil SA Cement (CSA). Tensile bond strength (TBS) was measured initially (24h water, 37°C) and after aging (5000 thermal cycles, 5/55°C). The failure types were evaluated after debonding. TBS values were analyzed using three-way and one-way ANOVA, followed by post hoc Scheffé-test, and two-sample Student's t-tests. RESULTS Among VAR and after aging, CG presented significantly higher TBS (p=0.007) than groups treated with MH, AM and VP. Other groups showed no impact of pre-treatment. A decrease of TBS values after thermal aging was observed within CSA: CG (p=0.002), MH (p<0.001), VL (p<0.001), AM (p=0.002), VP (p<0.001) and within VAR: MH (p=0.002) and AM (p=0.014). Groups cemented with VAR showed significantly higher TBS then groups cemented with CSA: non-aged groups: CG (p<0.001), and after thermal aging: CG (p=0.003), MH (p<0.001), VL (p=0.005), VP (p=0.010). SIGNIFICANCE According to the study results nano-composite CAD/CAM crowns should be cemented with VAR. Pre-treatment is not necessary if the tested resin composite cements are used.
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Affiliation(s)
- Bogna Stawarczyk
- Department of Prosthodontics, Dental School, Ludwig-Maximilians University Munich, Munich, Germany.
| | - Nicola Stich
- Department of Prosthodontics, Dental School, Ludwig-Maximilians University Munich, Munich, Germany
| | - Marlis Eichberger
- Department of Prosthodontics, Dental School, Ludwig-Maximilians University Munich, Munich, Germany
| | - Daniel Edelhoff
- Department of Prosthodontics, Dental School, Ludwig-Maximilians University Munich, Munich, Germany
| | - Malgorzata Roos
- Division of Biostatistics, Institute of Social and Preventive Medicine, University of Zurich, Zurich, Switzerland
| | - Wolfgang Gernet
- Department of Prosthodontics, Dental School, Ludwig-Maximilians University Munich, Munich, Germany
| | - Christine Keul
- Department of Prosthodontics, Dental School, Ludwig-Maximilians University Munich, Munich, Germany
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Fron Chabouis H, Smail Faugeron V, Attal JP. Clinical efficacy of composite versus ceramic inlays and onlays: A systematic review. Dent Mater 2013; 29:1209-18. [DOI: 10.1016/j.dental.2013.09.009] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 07/06/2013] [Accepted: 09/16/2013] [Indexed: 11/25/2022]
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Fron Chabouis H, Prot C, Fonteneau C, Nasr K, Chabreron O, Cazier S, Moussally C, Gaucher A, Khabthani Ben Jaballah I, Boyer R, Leforestier JF, Caumont-Prim A, Chemla F, Maman L, Nabet C, Attal JP. Efficacy of composite versus ceramic inlays and onlays: study protocol for the CECOIA randomized controlled trial. Trials 2013; 14:278. [PMID: 24004961 PMCID: PMC3846627 DOI: 10.1186/1745-6215-14-278] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Accepted: 08/13/2013] [Indexed: 12/04/2022] Open
Abstract
Background Dental caries is a common disease and affects many adults worldwide. Inlay or onlay restoration is widely used to treat the resulting tooth substance loss. Two esthetic materials can be used to manufacture an inlay/onlay restoration of the tooth: ceramic or composite. Here, we present the protocol of a multicenter randomized controlled trial (RCT) comparing the clinical efficacy of both materials for tooth restoration. Other objectives are analysis of overall quality, wear, restoration survival and prognosis. Methods The CEramic and COmposite Inlays Assessment (CECOIA) trial is an open-label, parallel-group, multicenter RCT involving two hospitals and five private practices. In all, 400 patients will be included. Inclusion criteria are adults who need an inlay/onlay restoration for one tooth (that can be isolated with use of a dental dam and has at least one intact cusp), can tolerate restorative procedures and do not have severe bruxism, periodontal or carious disease or poor oral hygiene. The decayed tissue will be evicted, the cavity will be prepared for receiving an inlay/onlay and the patient will be randomized by use of a centralized web-based interface to receive: 1) a ceramic or 2) composite inlay or onlay. Treatment allocation will be balanced (1:1). The inlay/onlay will be adhesively luted. Follow-up will be for 2 years and may be extended; two independent examiners will perform the evaluations. The primary outcome measure will be the score obtained with use of the consensus instrument of the Fédération Dentaire Internationale (FDI) World Dental Federation. Secondary outcomes include this instrument’s items, inlay/onlay wear, overall quality and survival of the inlay/onlay. Data will be analyzed by a statistician blinded to treatments and an adjusted ordinal logistic regression model will be used to compare the efficacy of both materials. Discussion For clinicians, the CECOIA trial results may help with evidence-based recommendations concerning the choice of materials for inlay/onlay restoration. For patients, the results may lead to improvement in long-term restoration. For researchers, the results may provide ideas for further research concerning inlay/onlay materials and prognosis. This trial is funded by a grant from the French Ministry of Health. Trial registration ClinicalTrials.gov Identifier:
NCT01724827
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Affiliation(s)
- Hélène Fron Chabouis
- Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, Montrouge 92120, France.
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Mörmann WH, Stawarczyk B, Ender A, Sener B, Attin T, Mehl A. Wear characteristics of current aesthetic dental restorative CAD/CAM materials: Two-body wear, gloss retention, roughness and Martens hardness. J Mech Behav Biomed Mater 2013; 20:113-25. [DOI: 10.1016/j.jmbbm.2013.01.003] [Citation(s) in RCA: 150] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 01/06/2013] [Indexed: 10/27/2022]
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Magne P, Stanley K, Schlichting LH. Modeling of ultrathin occlusal veneers. Dent Mater 2012; 28:777-82. [DOI: 10.1016/j.dental.2012.04.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2011] [Revised: 02/07/2012] [Accepted: 04/11/2012] [Indexed: 10/28/2022]
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Critchlow S. Ceramic materials have similar short term survival rates to other materials on posterior teeth. Evid Based Dent 2012; 13:49. [PMID: 22722415 DOI: 10.1038/sj.ebd.6400860] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
DATA SOURCES PubMed, Cochrane and Picarta databases and references of retrieved articles were searched from 2001-2009. STUDY SELECTION RCTs, CCTs and case series which compared Class I and Class II ceramic inlay restorations in permanent premolar and molar teeth, other posterior restorations were included. DATA EXTRACTION AND SYNTHESIS Two authors reviewed all abstracts independently, compared results and reached consensus on inclusion/ exclusion through discussion. Quality assessment of the studies was carried out using Hayashi's criteria. RESULTS Three studies (two RCTs, one CCR) were included. All three compared ceramic materials to composite resin materials. The outcomes were longevity of the restorations (USPHS criteria in two studies and CDA in one), postoperative sensitivity and colour match. None of the included studies reported sufficient data to calculate the corrected survival rate, so the conclusion that there was no difference between ceramic and other posterior restorations could not be reappraised. Neither of the two RCTs reporting postoperative sensitivity found a difference between the ceramic or composite restorations confirming the previous reviews findings. For aesthetic quality, only the CCR results were considered sufficiently reliable, with no significant difference being found between the materials. CONCLUSIONS Ceramic materials perform as well as alternative restorative materials for use as inlay restorations. However, a lack of long-term data means that this conclusion can only be supported for periods up to one year for longevity and 57 months for colour match.
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Affiliation(s)
- Simon Critchlow
- Department of Restorative Dentistry, Royal London Dental Hospital, New Road, Whitechapel, London, UK
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Load-bearing capacity of CAD/CAM milled polymeric three-unit fixed dental prostheses: effect of aging regimens. Clin Oral Investig 2012; 16:1669-77. [PMID: 22209963 DOI: 10.1007/s00784-011-0670-4] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Accepted: 12/20/2011] [Indexed: 10/14/2022]
Abstract
OBJECTIVE This study tested the fracture load of milled and conventionally fabricated polymeric and glass-ceramic three-unit fixed dental prostheses (FDPs) after aging. MATERIALS AND METHODS FDPs were fabricated (N = 1,050) from four computer-aided design and computer-aided manufacturing (CAD/CAM) resins: (1) AT (artBlock Temp); (2) TC (Telio CAD); (3) ZP (ZENO PMMA); (4) CT (CAD-Temp); two conventionally fabricated resins, (5) IES (integral esthetic press), (6) CMK (CronMix K), and a glass-ceramic (control) (7) PG (IMAGINE PressX). Specimens of each group were tested immediately after fabrication (n = 15 per material). Seventy-five FDPs per material type were stored in artificial saliva (37°C) and 15 of them were randomly selected after aging (1, 7, 28, 90, and 180 days) for fracture load measurement. The remaining specimens (n = 60 per material) were subjected to chewing simulation (×120.000-1.200.000, 49 N, 5°C/50°C). The data were analyzed using two-way and one-way ANOVA followed by Scheffé test. RESULTS The interactions between FDP materials and aging time in both storage media showed a significant impact on the results (p < 0.001). Among saliva storage groups, TC and ZP showed the highest, and PG the lowest fracture load (p < 0.05). AT and CT were not affected from chewing simulation. TC, ZP, and AT presented the highest in ascending order (p < 0.05), PG and CMK showed the lowest fracture load after chewing simulation (p < 0.001). CONCLUSIONS Aging did not influence the fracture load of FDPs made of CAD/CAM resins. FDPs made of glass-ceramic showed significantly lower fracture load than those of all resin FDPs. CLINICAL RELEVANCE Considering fracture load measurements, CAD/CAM resins tested could be alternative materials to glass-ceramic for FDP construction.
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Clinical study of indirect composite resin inlays in posterior stress-bearing cavities placed by dental students: Results after 4 years. J Dent 2011; 39:478-88. [DOI: 10.1016/j.jdent.2011.04.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Revised: 04/12/2011] [Accepted: 04/15/2011] [Indexed: 11/18/2022] Open
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MAGNE PASCAL, BOFF LUÍSL, ODERICH ELISA, CARDOSO ANTÔNIOC. Computer-Aided-Design/Computer-Assisted-Manufactured Adhesive Restoration of Molars with a Compromised Cusp: Effect of Fiber-Reinforced Immediate Dentin Sealing and Cusp Overlap on Fatigue Strength. J ESTHET RESTOR DENT 2011; 24:135-46. [DOI: 10.1111/j.1708-8240.2011.00433.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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SONG XF, YIN L. Stress and damage at the bur-prosthesis interface in dental adjustments of a leucite-reinforced glass ceramic. J Oral Rehabil 2010; 37:680-91. [DOI: 10.1111/j.1365-2842.2010.02099.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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An overview of treatment considerations for esthetic restorations: a review of the literature. J Prosthet Dent 2007; 96:433-42. [PMID: 17174661 DOI: 10.1016/j.prosdent.2006.09.018] [Citation(s) in RCA: 124] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Controversy persists regarding the treatment planning criteria for esthetic restorations. This article reviews the literature regarding the biocompatibility, marginal adaptation, color matching, patient selection, technique sensitivity, and mode and rate of failure of tooth-colored restorations. A Medline search was completed for the period from 1986 to 2006, along with a manual search, to identify pertinent English peer-reviewed articles and textbooks. The key words used were amalgam, posterior composite resin, ceramic inlays/onlays, CEREC, porcelain laminate veneers, all-ceramic crowns, and all-ceramic fixed partial dentures.
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