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Horhat RM, Bumbu BA, Orel L, Velea-Barta O, Cirligeriu L, Chicin GN, Pricop M, Rivis M, Dinu S, Horhat DI, Bratosin F, Fericean RM, Negrean RA, Nica LM. Assessing the Sealing Performance and Clinical Outcomes of Endodontic Treatment in Patients with Chronic Apical Periodontitis Using Epoxy Resin and Calcium Salicylate Seals. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1137. [PMID: 37374341 DOI: 10.3390/medicina59061137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/07/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023]
Abstract
Background and Objectives: Recognizing the significance of a hermetic apical seal for successful root canal treatment, the present investigation aimed to evaluate two sealing materials through an in vitro analysis, as well as to ascertain the clinical outcomes of patients treated with these two sealers in an in vivo setting. Materials and Methods: For the in vitro part of the study, two control groups of thirty monoradicular teeth were obturated with two sealers. Then, the sealers' performance was tested based on a predefined protocol. Group A included 30 patients treated with an epoxy oligomer resin-based sealer (Adseal, MetaBiomed), while Group S comprised 30 patients treated with a polymeric calcium salicylate-based sealer (Sealapex, Kerr). Samples were sectioned and evaluated under the microscope to determine the sealer's tightness by measuring the dye penetration into the root canal filling. For the in vivo part, a prospective study was designed to include 60 patients with chronic apical periodontitis in two endodontic treatment groups, using the same two sealers. Results: The in vitro analysis found that dye penetration in Group A was 0.82 mm (±0.428), while in Group S, the dye penetration was statistically significantly deeper, being 1.23 mm (±0.353). In the in vivo part of the study, the periapical index (PAI) significantly decreased 6 months after endodontic treatment, with 80.0% of patients in Group A having a PAI score of 2 compared to only 56.7% in Group S (p-value = 0.018). Similarly, tooth mobility scores significantly decreased after treatment, but with no difference between groups. The marginal bone loss decreased significantly more in the Adseal group compared to the Sealapex group (23.3% vs. 50.0%, p-value = 0.032). At the same time, 40.0% of patients in Group S had failed tooth healing compared to only 13.3% in Group A (p-value = 0.048). Conclusions: The in vitro study showed that Adseal had a better sealing capacity and a lower degree of dye penetration compared to Sealapex. However, on clinical evaluation in the in vivo study, both patient groups exhibited significant improvements in periapical index, tooth mobility scores, and pain reduction following endodontic treatment. Nevertheless, patients treated with Adseal showed a significantly greater improvement in PAI values, tooth mobility, and teeth healing after treatment. Overall, Adseal, as an endodontic sealer, may provide better sealing capabilities and enhanced clinical outcomes in the treatment of chronic apical periodontitis.
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Affiliation(s)
- Razvan Mihai Horhat
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square 2, 300041 Timisoara, Romania
- Advanced and Digital Endodontic, Restorative and Prosthodontic Treatment (TADERP) Research Center, Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square 2, 300041 Timisoara, Romania
| | - Bogdan Andrei Bumbu
- Department of Dental Medicine, Faculty of Medicine and Pharmacy, University of Oradea, 410073 Oradea, Romania
| | - Laura Orel
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square 2, 300041 Timisoara, Romania
| | - Oana Velea-Barta
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square 2, 300041 Timisoara, Romania
| | - Laura Cirligeriu
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square 2, 300041 Timisoara, Romania
- Advanced and Digital Endodontic, Restorative and Prosthodontic Treatment (TADERP) Research Center, Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square 2, 300041 Timisoara, Romania
| | - Gratiana Nicoleta Chicin
- Faculty of General Medicine, "Vasile Goldis" Western University of Arad, Bulevardul Revolutiei 94, 310025 Arad, Romania
- National Institute of Public Health, Strada Doctor Leonte Anastasievici 1-3, 050463 Bucharest, Romania
| | - Marius Pricop
- Discipline of Oral and Maxillo-Facial Surgery, Faculty of Dental Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square 2, 300041 Timisoara, Romania
| | - Mircea Rivis
- Department of Anesthesiology and Oral Surgery, Multidisciplinary Center for Research, Evaluation, Diagnosis and Therapies in Oral Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square 2, 300041 Timisoara, Romania
| | - Stefania Dinu
- Department of Pediatric Dentistry, Faculty of Dental Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square 2, 300041 Timisoara, Romania
| | - Delia Ioana Horhat
- ENT Department, "Victor Babes" University of Medicine and Pharmacy Timisoara, 2 Eftimie Murgu Square, 300041 Timisoara, Romania
| | - Felix Bratosin
- Department of Infectious Diseases, "Victor Babes" University of Medicine and Pharmacy, Eftimie Murgu Square 2, 300041 Timisoara, Romania
| | - Roxana Manuela Fericean
- Department of Infectious Diseases, "Victor Babes" University of Medicine and Pharmacy, Eftimie Murgu Square 2, 300041 Timisoara, Romania
| | | | - Luminita Maria Nica
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square 2, 300041 Timisoara, Romania
- Advanced and Digital Endodontic, Restorative and Prosthodontic Treatment (TADERP) Research Center, Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square 2, 300041 Timisoara, Romania
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Gong Q, Huang L, Luo J, Zhang Y, Meng Q, Quan J, Tong Z. The practicability of different preparation of mandibular molar restored by modified endocrown with intracanal extension: Computational analysis using finite element models. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2022; 226:107178. [PMID: 36242865 DOI: 10.1016/j.cmpb.2022.107178] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 10/01/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND AND OBJECTIVE Post-core-crown (PCC) and endocrown are two common restorative methods for severely damaged molars, but exhibit disadvantages. This study aimed to explore the practicability of modified endocrown with a 2 mm intracanal extension (MED) to restore defective teeth using finite element analysis (FEA). METHODS Five groups of numerical models of mandibular molars restored by three MEDs, a PCC, and a routine endocrown after root canal treatment were devised by FEA software. We constructed 4 mm, 3 mm, and 2 mm thickness of MED restorations to restore mandibular molars that were prepared to 1 mm, 2 mm, and 3 mm from the cemento-enamel junction (CEJ). Furthermore, PCC and routine endocrown were used to compare the stress distribution with MED. Lithium disilicate glass-ceramics (EMAX) and resin nanoceramics (LU) were considered restorative materials, and a vertical load of 600 N and an oblique load of 200 N were applied to the restorations. RESULTS In three MEDs by LU, 2 mm thickness of restoration generated the highest stress on prepared teeth, while the thickness of EMAX did not significantly influence the stress value. MED by LU generated higher stress around the CEJ, and reduced the stress on the middle and lower root compared to MEDs by EMAX, PCC by EMAX, and PCC by LU. MED by EMAX caused lower stress around the CEJ, and generated higher stress in the chamber walls after extended root canals compared with MED by LU, endocrowns by LU, and endocrowns by EMAX. There was an evident stress concentration at the last but one layer, which was a thin area of the tooth root in all restorative models. CONCLUSIONS The use of modified endocrown may be considered an effective restorative method to restore defective mandibular molar, but suitable restorative material must be selected based on the tooth preparation method and deficiencies in the tooth structure.
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Affiliation(s)
- Qimei Gong
- Hosiptal of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Luo Huang
- Hosiptal of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Junpan Luo
- Hosiptal of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yuejiao Zhang
- Hosiptal of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Qingzhen Meng
- Hosiptal of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jingjing Quan
- Hosiptal of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Zhongchun Tong
- Hosiptal of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China.
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Does the use of fiber posts increase the fracture resistance of simulated immature teeth? A systematic review. Odontology 2022; 110:619-633. [PMID: 35445361 DOI: 10.1007/s10266-022-00707-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/31/2022] [Indexed: 10/18/2022]
Abstract
This systematic review aimed to assess if the use of fiber posts reinforces weakened immature teeth. A systematic review was conducted of laboratory studies that evaluated the fracture resistance of simulated immature teeth restored with fiber posts compared to teeth restored exclusively with resin. An electronic search was performed using the following databases: PubMed/MEDLINE, Web of Science, Scopus and LILACS, BBO, and grey literature. Two independent researchers screened the titles and abstracts of the retrieved studies for relevance to the research question. Subsequently, the full texts of potentially relevant studies were screened based on the exclusion criteria. Ten out of 1792 unique records were included in this systematic review. Risk of bias was assessed using an adapted tool based on the Cochrane risk of bias tool. The laboratory studies included in this systematic review were performed on both human and bovine teeth. Eight studies concluded that fiber posts reinforce the structure of weakened roots, and two studies reported that fiber posts did not strengthen the radicular structure compared to teeth exclusively restored with resin composite. The highly heterogeneous data made it challenging to synthesize the results into a summary estimate, and thus no meta-analysis was undertaken. A summary effect could not be estimated without a meta-analysis. Although the laboratory literature suggests that fiber posts reinforce the structure of immature teeth, the results should be interpreted with caution, as most of the studies had an unclear or high risk of bias.
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KÜÇÜKEKENCİ AS, DEDE DÖ. Effect of tribochemical surface treatment technique on the push-out bond strength of novel CAD/CAM post restorations. CUMHURIYET DENTAL JOURNAL 2021. [DOI: 10.7126/cumudj.849157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Sharma D, Agrawal S, Gangurde P, Agarwal S, Srichand R, Sharma V. Awareness, attitude, and practice of dental practitioners toward management of endodontically treated teeth and factors associated with it: A questionnaire descriptive survey. J Family Med Prim Care 2020; 9:1113-1118. [PMID: 32318477 PMCID: PMC7113921 DOI: 10.4103/jfmpc.jfmpc_923_19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 01/22/2020] [Accepted: 02/03/2020] [Indexed: 12/05/2022] Open
Abstract
Background: Endodontically treated teeth should be prosthodontically managed properly to add life to the teeth, and hence the main aim of this study was to explore awareness, attitude, and practice of dental practitioners toward management of endodontically treated teeth and factors associated with it. Materials and Methods: It was a cross-sectional, descriptive questionnaire study conducted among dental practitioners working in private clinics. The study was conducted in August 2019. The survey was conducted among 239 participants. In this study, a close-ended interview schedule was prepared for perception and practice of dental specialists. Results: Most of the dental professionals (31.79%) preferred full coverage crown for restoring the grossly decayed endodontically treated teeth. Awareness regarding prosthodontic management of endodontically treated teeth was better among specialists (13.75%) than bachelor's degree holders. Attitude was neutral among most of the study participants (46.86%) and practice scores toward prosthodontic management of endodontically treated teeth was good. Gender and degree were significantly associated (P = 0.02*) (P = 0.05*), (P = 0.00***) (P = 0.05*) with awareness and practice of study participants. Conclusion: A majority of study subjects in this study had moderate awareness, neutral attitude, and good practice regarding restoration of endodontically treated teeth.
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Affiliation(s)
- Deepak Sharma
- Department of Conservative Dentistry and Endodontics, Bharati Vidyapeeth University Dental College and Hospital, Navi Mumbai, Maharashtra, India
| | - Sneh Agrawal
- Department of Periodontology, Bharati Vidyapeeth University Dental College and Hospital, Navi Mumbai, Maharashtra, India
| | - Parag Gangurde
- Department of Orthodontics, Bharati Vidyapeeth University Dental College and Hospital, Navi Mumbai, Maharashtra, India
| | - Sumeet Agarwal
- Department of Prosthodontics, Bharati Vidyapeeth University Dental College and Hospital, Navi Mumbai, Maharashtra, India
| | - Reema Srichand
- Department of Prosthodontics, Bharati Vidyapeeth University Dental College and Hospital, Navi Mumbai, Maharashtra, India
| | - Vivek Sharma
- Department of Periodontology, Bharati Vidyapeeth University Dental College and Hospital, Navi Mumbai, Maharashtra, India
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Braz R, Mergulhão VA, Oliveira LR, Alves MS, Canto CA. Flared Roots Reinforced With Bulk-fill Flowable Composite - Case Report. Oper Dent 2018; 43:225-231. [PMID: 29676977 DOI: 10.2341/16-221-t] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This article presents a case report for the treatment of a patient with a flared root. The patient was treated with a bulk-fill flowable composite. This innovative approach seems to be efficient in reinforcing flared roots. The advantages and disadvantages of the technique are presented.
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Effect of Anatomical Customization of the Fiber Post on the Bond Strength of a Self-Adhesive Resin Cement. Int J Dent 2017; 2017:5010712. [PMID: 28785281 PMCID: PMC5530420 DOI: 10.1155/2017/5010712] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 06/08/2017] [Indexed: 11/18/2022] Open
Abstract
AIM The aim of the study was to evaluate, by means of the push-out test, the effect of the anatomical customization of the fiber post on the bond strength of a self-adhesive resin cement. METHODS Twelve endodontically treated, human, upper central incisors were randomly divided into two groups (n = 6): control (glass fiber posts cemented with Relyx® U200) and customized (glass fiber posts anatomically customized with translucent composite resin cemented with Relyx U200). The roots were sectioned into three slices, cervical, middle, and apical, and photographed with a digital camera attached to a stereomicroscopic loupe. The images were analyzed by software, for evaluation of the cement line. The slices were subsequently submitted to the push-out test until the post had completely extruded, and the fracture mode was analyzed with a stereomicroscopic loupe. RESULTS The results showed significant differences between the groups in the different root thirds in relation to the area occupied by air bubbles (p < 0.05). Bond strength, when all the thirds are considered, was 8.77 ± 4.89 MPa for the control group and 16.96 ± 4.85 MPa for the customized group. CONCLUSION The customized group showed greater bond resistance than the control group and a more uniform cement layer.
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Ferro MCDL, Colucci V, Marques AG, Ribeiro RF, Silva-Sousa YTC, Gomes EA. Fracture Strength of Weakened Anterior Teeth Associated to Different Reconstructive Techniques. Braz Dent J 2016; 27:556-561. [DOI: 10.1590/0103-6440201602452] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 09/13/2016] [Indexed: 11/22/2022] Open
Abstract
Abstract This study evaluated the fracture strength of endodontically treated teeth submitted to reconstructive techniques through dynamic and static tests. Forty human anterior teeth were divided into 4 groups (n=10): GNW (non-weakened) - root restored with glass fiber post (GFP), GW - weakened root restored with GFP, GDA - weakened root restored with direct anatomic GFP, and GIA - weakened root restored with indirect anatomic GFP. The teeth were endodontically treated considering that experimental groups (GW, GDA and GIA) simulated weakened roots for restoration with GFP using different techniques. The GFP was luted with resin cement and the coronal portion was restored with composite resin and metallic crowns. All samples were submitted to chewing simulation at 60 cycles/min in a total of 300,000 cycles. The survival samples were further exposed to compressive loading at a crosshead speed of 1.0 mm/min in a universal testing machine. The load was applied at 135° to the long axis of the tooth until failure. Data were analyzed by ANOVA (a=0.05). After chewing simulation were observed: GNW: 100% of survival roots; GW: 70% of survival roots, and GDA and GIA: 80% of survival roots. The mean fracture strength values (N) were 280.6 (GNW), 239.0 (GW), 221.3 (GDA), and 234.1 (GIA) without significant difference among the groups (p=0.7476). The results suggested similar fracture strength in both weakened and non-weakened teeth regardless the reconstructive technique of root internal wall. Higher incidence of catastrophic fracture was observed in weakened teeth without restoration of the root internal wall.
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Junqueira RB, de Carvalho RF, Marinho CC, Valera MC, Carvalho CAT. Influence of glass fibre post length and remaining dentine thickness on the fracture resistance of root filled teeth. Int Endod J 2016; 50:569-577. [DOI: 10.1111/iej.12653] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Accepted: 04/19/2016] [Indexed: 11/30/2022]
Affiliation(s)
- R. B. Junqueira
- Department of Restorative Dentistry; Institute of Science and Technology; University Estadual Paulista (UNESP); São José dos Campos Brazil
| | - R. F. de Carvalho
- Department of Restorative Dentistry; Institute of Science and Technology; University Estadual Paulista (UNESP); São José dos Campos Brazil
| | - C. C. Marinho
- Department of Restorative Dentistry; Institute of Science and Technology; University Estadual Paulista (UNESP); São José dos Campos Brazil
| | - M. C. Valera
- Department of Restorative Dentistry; Institute of Science and Technology; University Estadual Paulista (UNESP); São José dos Campos Brazil
| | - C. A. T. Carvalho
- Department of Restorative Dentistry; Institute of Science and Technology; University Estadual Paulista (UNESP); São José dos Campos Brazil
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Impact of a Core Ferrule Design on Fracture Resistance of Teeth Restored with Cast Post and Core. Adv Med 2016; 2016:5073459. [PMID: 27419202 PMCID: PMC4933856 DOI: 10.1155/2016/5073459] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 05/29/2016] [Indexed: 11/17/2022] Open
Abstract
Objectives. To investigate the influence of a contra bevel on the fracture resistance of teeth restored with cast post and core. Materials and Methods. Sixty plastic analogues of an upper incisor were endodontically treated and prepared with 6° internal taper and 2 mm of ferrule in order to receive a cast post and core. The prepared samples were divided into two groups (n = 30); the first group serves as control while the second group was prepared with an external 30° bevel on the buccal and lingual walls. All samples crowned were exposed to a compressive load at 130° to their long axis until fractures occurred. Fracture resistance loads were recorded and failure modes were also observed. Mann-Whitney test was carried out to compare the two groups. Results. Mean failure loads for the groups were, respectively, 1038.69 N (SD ±243.52 N) and 1078.89 N (SD ±352.21 N). Statistically, there was no significant difference between the two groups (P = 0.7675 > 0.05). Conclusion. In the presence of a ferrule and a crown in the anterior teeth, adding a secondary ferrule to the cast post and core will not increase the resistance to fracture.
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Sreedevi S, Sanjeev R, Raghavan R, Abraham A, Rajamani T, Govind GK. An In Vitro Study on the Effects of Post-Core Design and Ferrule on the Fracture Resistance of Endodontically Treated Maxillary Central Incisors. J Int Oral Health 2015; 7:37-41. [PMID: 26464537 PMCID: PMC4588787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Endodontically treated teeth have significantly different physical and mechanical properties compared to vital teeth and are more prone to fracture. The study aims to compare the fracture resistance of endodontically treated teeth with and without post reinforcement, custom cast post-core and prefabricated post with glass ionomer core and to evaluate the ferrule effect on endodontically treated teeth restored with custom cast post-core. MATERIALS AND METHODS A total of 40 human maxillary central incisors with similar dimensions devoid of any root caries, restorations, previous endodontic treatment or cracks were selected from a collection of stored extracted teeth. An initial silicone index of each tooth was made. They were treated endodontically and divided into four groups of ten specimens each. Their apical seal was maintained with 4 mm of gutta-percha. Root canal preparation was done and then post core fabrication was done. The prepared specimens were subjected to load testing using a computer coordinated UTM. The fracture load results were then statistically analyzed. One-way ANOVA was followed by paired t-test. RESULTS 1. Reinforcement of endodontically treated maxillary central incisors with post and core, improved their fracture resistance to be at par with that of endodontically treated maxillary central incisor, with natural crown. 2. The fracture resistance of endodontically treated maxillary central incisors is significantly increased when restored with custom cast post-core and 2 mm ferrule. CONCLUSION With 2 mm ferrule, teeth restored with custom cast post-core had a significantly higher fracture resistance than teeth restored with custom cast post-core or prefabricated post and glass ionomer core without ferrule.
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Affiliation(s)
- S Sreedevi
- Professor, Department of Prosthodontics, Century International Institute of Dental Sciences and Research Centre, Poinachi, Thekkil, Kasaragode, Kerala, India,Correspondence: Dr. Sreedevi S. Department of Prosthodontics, Century International Institute of Dental Sciences and Research Centre, Poinachi, Thekkil, Kasaragode, Kerala - 671 541, India.
| | - R Sanjeev
- Professor, Department of Periodontics, Indira Gandhi Institute of Dental Sciences, Nellikuzhi, Kothamangalam, Kerala, India
| | - Rekha Raghavan
- Professor, Department of Periodontics, Educare Institute of Dental Sciences, Malappuram, Kerala, India
| | - Anna Abraham
- Reader, Department of Periodontics, Educare Institute of Dental Sciences, Malappuram, Kerala, India
| | - T Rajamani
- Professor, Department of Pedodontics and Preventive Dentistry, Mahe Institute of Dental Sciences & Hospital, Chalakkara, Mahe, Puducherry, India
| | - Girish Kumar Govind
- Professor, Department of Oral and Maxillofacial Surgery, Mahe Institute of Dental Sciences and Hospital, Chalakkara, Mahe, Puducherry, India
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Analysis of bond strength by pull out test on fiber glass posts cemented in different lengths. J Int Oral Health 2015; 7:7-12. [PMID: 25954063 PMCID: PMC4409801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Accepted: 12/25/2014] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND The aim of this study was to evaluate, by means of pull-out test, the bond strength of fiberglass posts when cemented with different lengths in endodontically treated teeth. MATERIALS AND METHODS Sixty single-rooted bovine roots were cut in the cementoenamel junction with 21 mm length. They were endodontically treated and randomly divided into three groups (n = 20). Group 1 - Preparation of 2/3 of the remaining roots; Group 2 - Preparation of ½ of the remaining roots and Group 3 - Preparation of ¼ of remaining roots. For all groups it were used posts n = 3 (Exacto, Angelus, Brazil), and cemented with self-etching resin cement (RelyXU200). After cementing posts, the samples were thermocycled (10.000 cycles/5°C and 55°C). The pull-out test was performed on a universal testing machine (EMIC - DL500) and the values obtained were statistically analyzed by analysis of variance (one-factor ANOVA) and multiple comparison test of Tukey, with level of significance of 5%. RESULTS The mean values ± standard deviation in Newtons (N) were: Group 1 = 120.5 (±42.8) A, Group 2 = 103.1 (±31.2) AB, Group 3 = 41.2 (±22.4) C, P < 0.005. CONCLUSION The preparation of ½ of remaining root appears to be a viable alternative when 2/3 of the preparation of the remaining root is not possible, but more results are needed for clinical validation.
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Brito-Júnior M, Pereira RD, Veríssimo C, Soares CJ, Faria-e-Silva AL, Camilo CC, Sousa-Neto MD. Fracture resistance and stress distribution of simulated immature teeth after apexification with mineral trioxide aggregate. Int Endod J 2014; 47:958-66. [PMID: 24386969 DOI: 10.1111/iej.12241] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Accepted: 01/01/2014] [Indexed: 11/30/2022]
Abstract
AIM To evaluate the effect of adhesive restorations on fracture resistance and stress distribution in teeth with simulated immature apices and apical plugs of mineral trioxide aggregate (MTA). METHODOLOGY Sixty bovine incisors were sectioned 8 mm above and 12 mm below the cemento-enamel junction (CEJ). The root canal was enlarged using a diamond bur, resulting in remaining root canal walls with 0.1-0.2 mm of thickness. A 5-mm apical plug of MTA was placed and the teeth were restored according to the following groups: GP--the root canal was filled with gutta-percha and endodontic sealer; CR--the root canal was filled with light-cured composite resin inserted incrementally; FP--a fibre post was cemented into the root canal; and RFP--the fibre post was relined with composite resin prior to the cementation into the root canal. A load was applied on the crown of all teeth at 135° to their long axis until fracture. Data was analysed by one-way anova and SNK tests (α = 0.05), whilst the fracture pattern was evaluated according to the position of the fracture. Stress distributions in the restored teeth were verified by finite element analysis. RESULTS Teeth restored with fibre posts and relined fibre posts were associated with the highest fracture resistance, whilst the GP group had the lowest values. GP and RC groups had similar fracture resistance values (P = 0.109). All fractures types involved the cervical and middle thirds of roots. The GP model had high levels of stress concentration in the cervical and middle thirds of roots. No difference was found amongst the stress concentration in the RC, FP and RFP models. CONCLUSION Restorative protocols alter the fracture resistance and stress distribution of immature teeth after placement of MTA apical plugs.
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Affiliation(s)
- M Brito-Júnior
- Interinstitutional PhD program, State University of Montes Claros, Montes Claros, Brazil; Department of Restorative Dentistry, Faculty of Dentistry, University of São Paulo, Ribeirão Preto, Brazil
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Habib SR, Al Rifaiy MQ, Alkunain J, Alhasan M, Albahrani J. Concepts of restoring endodontically treated teeth among dentists in Saudi Arabia. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.ksujds.2013.08.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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15
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Seghi RR, Nasrin S, Draney J, Katsube N. Root Fortification. J Endod 2013; 39:S57-62. [DOI: 10.1016/j.joen.2012.10.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Accepted: 10/23/2012] [Indexed: 10/27/2022]
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Dikbas I, Tanalp J, Koksal T, Yalnız A, Güngör T. Investigation of the effect of different prefabricated intracanal posts on fracture resistance of simulated immature teeth. Dent Traumatol 2013; 30:49-54. [DOI: 10.1111/edt.12034] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/23/2012] [Indexed: 12/01/2022]
Affiliation(s)
- Idil Dikbas
- Faculty of Dentistry, Department of Prosthodontics; Yeditepe University; Istanbul Turkey
| | - Jale Tanalp
- Faculty of Dentistry, Department of Endodontics; Yeditepe University; Istanbul Turkey
| | - Temel Koksal
- Faculty of Dentistry, Department of Prosthodontics; Yeditepe University; Istanbul Turkey
| | - Ayşe Yalnız
- Faculty of Dentistry, Department of Prosthodontics; Yeditepe University; Istanbul Turkey
| | - Tufan Güngör
- Faculty of Dentistry, Department of Endodontics; Yeditepe University; Istanbul Turkey
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Cardoso M, Marques RF, Lopes MF, Cabrita AS, Santos JM. In vivo biocompatibility of Resilon compared with gutta-percha in a pre-clinical model. Dent Res J (Isfahan) 2013; 10:652-8. [PMID: 24348625 PMCID: PMC3858742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
BACKGROUND The aim of this study was to investigate in vivo biocompatibility of Resilon, compared with gutta-percha, at short and long-term following implantation in a rat subcutaneous implantation model. MATERIALS AND METHODS Male Wistar rats were implanted subcutaneously with either Resilon or gutta-percha or were sham controls. Tissues were harvested at 8 days or 60 days after implantation and were evaluated histologically for inflammation and fibrous encapsulation. The severity of histologic injury, scored on a scale of 0-4 and quantitative analysis of the capsule wall thickness were determined for statistical analysis. Data were analyzed by Student t-test, one-way analysis of variance, Kruskal-Wallis or Mann-Whitney's tests as appropriate. A value of P ≤ 0.05 was considered statistically significant. RESULTS No behavioral changes or visible signs of physical impairment were observed at 8 days or 60 days post-implantation. Histopathologic observation of the implanted sites at each time-point showed that both Resilon and gutta-percha implants induced foreign body reaction, showing minimal to mild inflammatory reactions in most cases, which diminished significantly with time. Compared with gutta-percha, the capsule wall was thinner (P < 0.05) after Resilon implantation at day 8 and significantly (P = 0.01) thicker at day 60. In addition, capsule wall thickness showed a trend to increase with time after implantation in the Resilon groups (P < 0.05), opposed to the significant decrease (P = 0.016) observed after implantation in the gutta-percha groups, suggesting lesser long-term biocompatibility of Resilon. CONCLUSION Our findings validate Resilon as an in vivo biocompatible material. However, our data suggest that long-term biocompatibility of Resilon, despite validated, is inferior to that of gutta-percha control.
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Affiliation(s)
- Miguel Cardoso
- Department of Experimental Pathology, Faculty of Medicine of the University of Coimbra, Rua Larga, 3004-504, Portugal,Address for correspondence: Dr. Miguel Cardoso, Centro Médico de Tondela, Rua Comandante João de Matos Ferreira, no 88, 3460-549 Tondela, Portugal. E-mail:
| | - Rodrigo F Marques
- Department of Experimental Pathology, Faculty of Medicine of the University of Coimbra, Rua Larga, 3004-504, Portugal
| | - Maria Francelina Lopes
- Department of Experimental Surgery, Faculty of Medicine of the University of Coimbra, Rua Larga, 3004-504, Portugal
| | - António S Cabrita
- Department of Experimental Pathology, Faculty of Medicine of the University of Coimbra, Rua Larga, 3004-504, Portugal
| | - João Miguel Santos
- Department of Dental Medicine, Stomatology and Maxillofacial Surgery, Faculty of Medicine of the University of Coimbra, Av. Bissaya Barreto, 3030-005, Coimbra, Portugal
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