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Adriana MV, Camila CS, Vinícius MC, Hans HAO, Rodrigo AC, Allyson MN, Luis Fernando MSA. Direct guided restorations from planning to definitive restoration: A clinical report. J Prosthet Dent 2023; 129:2-6. [PMID: 34417017 DOI: 10.1016/j.prosdent.2021.03.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/30/2021] [Accepted: 03/31/2021] [Indexed: 01/18/2023]
Abstract
A direct composite resin placed by using digitally planned prototyped 3D guides and retained with a digitally guided fiberglass micropin was used to restore an extensively damaged maxillary left central incisor.
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Affiliation(s)
- Martins Vieira Adriana
- Substitute Professor, Department of Restorative Dentistry, Federal University of Minas Gerais (FO-UFMG), Belo Horizonte, Brazil.
| | - Caneschi S Camila
- Graduate student, Department of Restorative Dentistry, Federal University of Minas Gerais, (FO-UFMG), Belo Horizonte, Brazil
| | - Machado C Vinícius
- Professor, Uniavan SCAvenida Marginal Leste, Balneário Camboriú - SC, Belo Horizonte, Minas Gerais, Brazil
| | - Hatner A O Hans
- Graduate student, Department of Restorative Dentistry, Federal University of Minas Gerais, (FO-UFMG), Belo Horizonte, Brazil
| | - Albuquerque C Rodrigo
- Professor, Department of Restorative Dentistry, Federal University of Minas Gerais, (FO-UFMG), Belo Horizonte, Brazil
| | - Moreira N Allyson
- Professor, Department of Restorative Dentistry, Federal University of Minas Gerais, (FO-UFMG), Belo Horizonte, Brazil
| | - Morgan S A Luis Fernando
- Professor, Department of Restorative Dentistry, Federal University of Minas Gerais, (FO-UFMG), Belo Horizonte, Brazil
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Martins AV, Albuquerque RC, Morgan L, Silva N, Drummond AF, Silveira RR, Magalhães CS, Moreira AN. Mini Fiberglass Post for Ankylosed Tooth Reconstruction: A Clinical Technique. Oper Dent 2018; 43:566-572. [PMID: 29570029 DOI: 10.2341/17-203-t] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
It was possible to restore the shape and function of a severely ankylosed tooth by fabricating a ceramic crown for placement on a resin reconstruction supported by mini fiberglass posts. By increasing the retention of the morphological reconstruction for the future support of indirect restorations, cementable intradentinal fiberglass posts enhance the longevity of these restorations. Ultimately, all proposals that seek to improve the long-term prognosis of restorations on ankylosed teeth, especially severely impacted ones, are of extreme clinical relevance.
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Morgan LFDSA, Martins AV, Albuquerque RDC, Silveira RR, Silva NRFA, Moreira AN. Mini fiberglass post for composite resin restorations: A clinical report. J Prosthet Dent 2016; 115:654-7. [PMID: 26724848 DOI: 10.1016/j.prosdent.2015.10.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 10/04/2015] [Accepted: 10/06/2015] [Indexed: 10/22/2022]
Abstract
Threaded metal pins have been used to create additional retention for large composite resin restorations. However, their dark appearance may compromise esthetic outcome. The use of small fiberglass posts has been advocated as an alternative. This clinical report describes a mini fiberglass post (MFP) used to provide additional retention in a fractured anterior tooth that received a composite resin restoration. The MFP represents a promising option for creating additional retention for large composite resin restorations.
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Affiliation(s)
| | - Adriana Vieira Martins
- Doctoral student, Department of Restorative Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | - Rodrigo Richard Silveira
- Professor, Department of Restorative Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | - Allysson Nogueira Moreira
- Professor, Department of Restorative Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
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de Andrade CL, Gonçalves TMSV, Santos ÍLD, Barros MS, Araújo NRR, Cury AADB. Direct adhesive pin-retained restorations for severely worn dentition treatment: a 1.5-year follow-up report. Braz Dent J 2014; 25:357-62. [PMID: 25250503 DOI: 10.1590/0103-6440201300020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Accepted: 06/10/2014] [Indexed: 11/22/2022] Open
Abstract
Excessive occlusal surface wear can result in occlusal disharmony, functional and esthetic impairment. As a therapeutic approach, conventional single crowns have been proposed, but this kind of treatment is complex, highly invasive and expensive. This case report describes the clinical outcomes of an alternative minimally invasive treatment based on direct adhesive-pin retained restorations. A 64-year-old woman with severely worn dentition, eating problems related to missing teeth and generalized tooth hypersensitivity was referred for treatment. Proper treatment planning based on the diagnostic wax-up simulation was used to guide the reconstruction of maxillary anterior teeth with direct composite resin over self-threading dentin pins. As the mandibular remaining teeth were extremely worn, a tooth-supported overdenture was installed. A stabilization splint was also used to protect the restorations. This treatment was a less expensive alternative to full-mouth rehabilitation with positive esthetic and functional outcomes after 1.5 years of follow-up.
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Affiliation(s)
- Camila Lima de Andrade
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, UNICAMP - University of Campinas, Piracicaba, SP, Brazil
| | | | - Ícaro Leite dos Santos
- Department of Prosthodontics, Dental School, UFPA - Federal University of Pará, Belém, PA, Brazil
| | - Michel Silva Barros
- Department of Prosthodontics, Dental School, UFPA - Federal University of Pará, Belém, PA, Brazil
| | | | - Altair Antoninha Del Bel Cury
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, UNICAMP - University of Campinas, Piracicaba, SP, Brazil
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Iglesias MAL, Mesquita GC, Pereira AG, Dantas LCDM, Raposo LHA, Soares CJ, Mota ASD. Influence of core-finishing intervals on tensile strength of cast posts-and-cores luted with zinc phosphate cement. Braz Oral Res 2012; 26:378-83. [PMID: 22790502 DOI: 10.1590/s1806-83242012000400016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Accepted: 05/16/2012] [Indexed: 11/22/2022] Open
Abstract
The core finishing of cast posts-and-cores after luting is routine in dental practice. However, the effects of the vibrations produced by the rotary cutting instruments over the luting cements are not well-documented. This study evaluated the influence of the time intervals that elapsed between the cementation and the core-finishing procedures on the tensile strength of cast posts-and-cores luted with zinc phosphate cement. Forty-eight bovine incisor roots were selected, endodontically treated, and divided into four groups (n = 12): GA, control (without finishing); GB, GC, and GD, subjected to finishing at 20 minutes, 60 minutes, and 24 hours after cementation, respectively. Root canals were molded, and the resin patterns were cast in copper-aluminum alloy. Cast posts-and-cores were luted with zinc phosphate cement, and the core-finishing procedures were applied according to the groups. The tensile tests were performed at a crosshead speed of 0.5 mm/min for all groups, 24 hours after the core-finishing procedures. The data were subjected to one-way analysis of variance (ANOVA) and Tukey's test (α = 0.05). No significant differences were observed in the tensile strengths between the control and experimental groups, regardless of the time interval that elapsed between the luting and finishing steps. Within the limitations of the present study, it was demonstrated that the core-finishing procedures and time intervals that elapsed after luting did not appear to affect the retention of cast posts-and-cores when zinc phosphate cement was used.
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Affiliation(s)
- Michele Andrea Lopes Iglesias
- Department of Occlusion, Fixed Prosthodontics and Dental Materials, School of Dentistry, Federal University of Uberlândia, Uberlândia, MG, Brazil
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Raposo LHA, Silva GR, Santos-Filho PCF, Soares PV, Soares PBF, Simamoto-Junior PC, Fernandes-Neto AJ, Soares CJ. Effect of anti-rotation devices on biomechanical behaviour of teeth restored with cast post-and-cores. Int Endod J 2010; 43:681-91. [DOI: 10.1111/j.1365-2591.2010.01739.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Brunton PA, Christensen GJ, Cheung SW, Burke FJT, Wilson NHF. Contemporary dental practice in the UK: indirect restorations and fixed prosthodontics. Br Dent J 2005; 198:99-103; discussion 89. [PMID: 15702109 DOI: 10.1038/sj.bdj.4811980] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2003] [Accepted: 01/20/2004] [Indexed: 11/09/2022]
Abstract
OBJECTIVES To investigate, by questionnaire, the use and selection of materials and techniques for indirect restorations and fixed prosthodontics by dental practitioners in the North West of England and Scotland. METHODS A questionnaire was sent to 1,000 general dental practitioners selected at random from dentists in Scotland and the North West of England. Non-responders were sent another questionnaire after a period of 4 weeks had elapsed. RESULTS A total of 701 usable questionnaires were returned, giving a response rate of 70%. When selecting a material for the core build-up of vital teeth, practitioners used the following materials (%): amalgam (60), dual and light-cured resin composite (54), glass-ionomer cements (47), compomer (29) and resin-modified glass-ionomer cements (24). Where the use of a post was indicated indirect posts of both precious (67) and non-precious (37) alloys were preferred to prefabricated posts by the majority of practitioners for the restoration of root filled teeth. Direct titanium (14) and stainless steel (14) posts were not used extensively. Impression materials used by the practitioners were as follows: addition-cured silicone (70), condensation-cured silicone (20), polyether (9) and polysulphide (2). Traditional glass-ionomer cements (59) were used for the luting of single and multiple porcelain fused to metal units, with zinc phosphate and polycarboxylate cements (33) being the preferred alternatives. CONCLUSIONS The majority of the practitioners surveyed in this study used: amalgam for core build-ups; indirect posts; addition-cured silicone for impressions; and glass-ionomer cements for luting procedures.
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Affiliation(s)
- P A Brunton
- Leeds Dental Institute, University of Leeds, Clarendon Way, Leeds, West Yorkshire LS2 9LU.
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Segović S, Ferk S, Anić I, Jukić S, Galić N, Sistig S. Changes in dentin after insertion of self-threading titanium pins with 3 methods: a scanning electron microscope pilot study. J Prosthet Dent 2002; 87:182-8. [PMID: 11854675 DOI: 10.1067/mpr.2002.120652] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
STATEMENT OF PROBLEM Inserting a self-threading pin can cause dentinal cracks, but it is not known whether dentin bonding agents can penetrate these cracks. PURPOSE Part I of this in vitro pilot study was conducted to document the presence of dentinal cracks after the placement of self-threading pins with 3 methods. Part II was conducted to observe changes in dentin when a dentin bonding agent was applied before insertion of the self-threading pins. MATERIAL AND METHODS The crowns of 14 noncarious third molars were sectioned horizontally 2 mm above the cemento-enamel junction, and the occlusal portions were discarded. The teeth were put into a nontransparent bag and divided randomly into 2 groups. Group 1 consisted of 12 teeth. In each tooth, 4 pinholes were prepared with a handpiece at normal rotation speed (30,000 rpm). Self-threading pins were placed into 3 of the pinholes in each tooth: 1 manually, 1 by handpiece at 7000 rpm, and 1 by handpiece at 30,000 rpm. The fourth pinhole was left empty and served as the control. All group 1 teeth were sectioned vertically through the pins, dental hard tissue, and control pin holes. The examination surface of each specimen in group 1 was polished, and the smear layer was removed with Calcinase and NaOCl solutions. After dehydration in ascending grades of alcohol, specimens were coated with a 10- to 15-nm-thick layer of gold and examined with a scanning electron microscope. In the remaining 2 teeth (group 2), a dentin bonding agent was introduced into the pinholes prior to pin placement. Two pins were placed manually and 2 by handpiece at 30,000 rpm. After pin placement, sectioning, cleaning, and dehydration, the specimens were examined with a scanning electron microscope, and x-ray mapping was performed to determine the presence of titanium, silicon, and calcium. RESULTS Craze lines in dentin were associated with 54.5% of pins placed manually and 54.5% of pins placed with a handpiece at reduced speed (7000 rpm). Dentinal cracks were associated with 50% of pins placed with a handpiece at standard speed and with 16.7% of the control pinholes. X-ray mapping analysis revealed the presence of the dentin bonding agent between the pin and dentin wall. The dentin bonding agent was not found in the dentinal cracks except at the crack orifice. SUMMARY Within the limitations of this pilot study, the method of pin insertion had no direct bearing on the presence of dentinal cracks. The dentin bonding agent tested did not fill the entire space of dentinal cracks but did occlude their orifices and fill the spaces between pin surface and dentin walls in the pin preparation.
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Affiliation(s)
- Sanja Segović
- Department of Endodontology and Restorative Dentistry, School of Dental Medicine, University of Zagreb, Croatia
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