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Fischer BV, Dias-Junior LCDL, Minamisako MC, Almeida CM, da Silva LR, Bortoluzzi EA, Teixeira CDS, Garcia LDFR. Effect of the timing of primary endodontic treatment and dosage of radiation therapy on the filling material removal. AUST ENDOD J 2024; 50:321-333. [PMID: 38596885 DOI: 10.1111/aej.12846] [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: 12/01/2023] [Revised: 03/11/2024] [Accepted: 04/01/2024] [Indexed: 04/11/2024]
Abstract
This study investigated the effect of the timing of primary endodontic treatment and dosage of radiotherapy on the remaining filling material (RFM) during endodontic reintervention. 60 single-rooted human mandibular premolars were distributed into five groups (n = 12), according to the timing and dosage of radiation (55Gy or 70Gy): NegativeCG-non-irradiated teeth; Endo-pre-RT55/70-obturation before irradiation (55Gy or 70Gy); Endo-post-RT55/70-obturation and reintervention after irradiation (55Gy or 70Gy). Roots were cleaved and analysed under stereomicroscope and Scanning Electron Microscope to quantify (%) the RFM. Experimental groups had a significantly greater amount (p < 0.05) of RFM in the middle and apical thirds than the control group, except for Endo-pre-RT55 in the middle third (p < 0.0001). The apical third had greater amount of RFM (p < 0.05). Radiation therapy, before and after primary endodontic treatment, increased the amount of RFM, regardless of the dose delivered. When necessary, reintervention preferably must be performed before radiation therapy.
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Affiliation(s)
- Bruna Venzke Fischer
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Luiz Carlos de Lima Dias-Junior
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | | | - Cristiane Maria Almeida
- Department of Radiotherapy, Oncology Research Center (CEPON), Florianópolis, Santa Catarina, Brazil
| | - Luciano Roberto da Silva
- Department of Radiotherapy, Oncology Research Center (CEPON), Florianópolis, Santa Catarina, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Diagnosis & Oral Health, Division of Endodontics, School of Dentistry, University of Louisville, Louisville, Kentucky, USA
| | - Cleonice da Silveira Teixeira
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
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Jordani LD, da Rosa AF, Dias-Junior LCDL, Savaris JM, Minamisako MC, da Silva LR, Takashima MTU, Bortoluzzi EA, da Silveira Teixeira C, da Fonseca Roberti Garcia L. Ultrasonic activation of the endodontic sealer enhances its intratubular penetration and bond strength to irradiated root dentin. Odontology 2024; 112:917-928. [PMID: 38194041 DOI: 10.1007/s10266-023-00888-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 12/10/2023] [Indexed: 01/10/2024]
Abstract
To evaluate the effect of ultrasonic activation of the endodontic sealer on its intratubular penetration and bond strength to irradiated root dentin. Forty human teeth were distributed into 4 groups (n = 10), according to the radiation therapy (RT) exposure-70 Gy-and ultrasonic activation (UA) of the endodontic sealer: RT/UA-irradiated teeth and sealer UA; RT/no-UA-irradiated teeth and no sealer UA; no-RT/UA-non-irradiated teeth and sealer UA and no-RT/no-UA-non-irradiated teeth and no sealer UA. Push-out bond strength test was performed in a Universal Testing Machine. Failure modes and adhesive interface were analyzed under Scanning Electron Microscopy. The data were statistically compared (two-way-ANOVA and posthoc Games-Howell test; Fisher's exact test - α = 5%). The different experimental conditions (radiation and UA) and the root third had a significant effect on push-out bond strength, and the interaction of these factors was significant (p < 0.05). UA of the sealer significantly increased its bond strength to both irradiated and non-irradiated dentin (p < 0.05). The irradiated groups mostly presented adhesive-type failure of the sealer (p < 0.01). Regardless of the irradiation, the ultrasonically activated groups showed a more homogeneous adhesive interface, with the presence of sealer tags in greater density and depth. Ultrasonic activation enhanced the intratubular penetration and the bond strength of the endodontic sealer to irradiated dentin. The impact of ultrasonic activation of the endodontic sealer on teeth undergoing radiotherapy is a gap in the scientific literature that needs to be bridged.
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Affiliation(s)
- Luana Duart Jordani
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Amanda Freitas da Rosa
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Luiz Carlos de Lima Dias-Junior
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Julia Menezes Savaris
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, 88040-900, Brazil
| | | | - Luciano Roberto da Silva
- Department of Radiotherapy, Oncology Research Centre (CEPON), Florianópolis, Santa Catarina, Brazil
| | | | - Eduardo Antunes Bortoluzzi
- Department of Diagnosis and Oral Health, Endodontics Division, University of Louisville, Louisville, KY, USA
| | - Cleonice da Silveira Teixeira
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, 88040-900, Brazil.
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Lee YN, Kim MK, Kim HJ, Yu MK, Lee KW, Min KS. Evaluation of the root dentin bond strength and intratubular biomineralization of a premixed calcium aluminate-based hydraulic bioceramic endodontic sealer. J Oral Sci 2024; 66:96-101. [PMID: 38325857 DOI: 10.2334/josnusd.23-0235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
PURPOSE This study evaluated the dentin bonding strength and biomineralization effect of a recently developed premixed calcium aluminate-based endodontic sealer (Dia-Root Bio Sealer) in comparison with existing calcium silicate-based sealers. METHODS The root canals of 80 mandibular premolars were filled with Dia-Root Bio Sealer, Endoseal MTA, EndoSequence BC Sealer, and AH Plus Bioceramic Sealer. Medial and apical specimens were then obtained by sectioning. The push-out bond strength was measured using the medial specimens, and the failure mode was recorded. Intratubular biomineralization in the apical specimens was analyzed using scanning electron microscopy and energy-dispersive X-ray spectroscopy (EDS). The data were analyzed using one-way analysis of variance followed by the Tukey test (P < 0.05). RESULTS The push-out bond strength of Dia-Root Bio Sealer was significantly higher than that of the other tested materials, and a cohesive failure pattern was observed in all groups. Dia-Root Bio Sealer also exhibited a significantly higher degree of biomineralization than the other groups, and EDS analysis indicated that the biomineralized precipitates were amorphous calcium phosphate. CONCLUSION The results of this study indicate that Dia-Root Bio Sealer has the potential to be used as an adequate root canal sealer due to its favorable bonding performance.
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Affiliation(s)
- Yu-Na Lee
- Department of Conservative Dentistry, School of Dentistry, Jeonbuk National University
| | - Min-Kyeong Kim
- Department of Dentistry, College of Medicine, Kosin University
| | - Hee-Jin Kim
- Department of Dentistry, College of Medicine, Kosin University
| | - Mi-Kyung Yu
- Department of Conservative Dentistry, School of Dentistry, Jeonbuk National University
- Research Institute of Clinical Medicine of Jeonbuk National University
- Biomedical Research Institute of Jeonbuk National University Hospital
| | - Kwang-Won Lee
- Department of Conservative Dentistry, School of Dentistry, Jeonbuk National University
- Research Institute of Clinical Medicine of Jeonbuk National University
- Biomedical Research Institute of Jeonbuk National University Hospital
| | - Kyung-San Min
- Department of Conservative Dentistry, School of Dentistry, Jeonbuk National University
- Research Institute of Clinical Medicine of Jeonbuk National University
- Biomedical Research Institute of Jeonbuk National University Hospital
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Khullar L, Ballal NV, Eyüboğlu TF, Özcan M. Does radiation therapy affect adhesion of tricalcium silicate cements to root dentin? J Appl Oral Sci 2023; 31:e20230118. [PMID: 37729257 DOI: 10.1590/1678-7757-2023-0118] [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: 03/29/2023] [Accepted: 08/03/2023] [Indexed: 09/22/2023] Open
Abstract
OBJECTIVE This study aimed to analyze the effect of irradiation on the push-out bond strength of mineral trioxide aggregate (MTA) and Biodentine to radicular dentin. METHODOLOGY A total of 60 extracted mature human teeth with single root canals were categorized into two groups (irradiated and non-irradiated) (n=30). Each group was further divided into two sub-groups based on cements used (Biodentine and MTA). Then, a cumulative radiation dose of 60 Gy was divided into 30 fractions (two Gy for every fraction) and administered for five successive days per week over six weeks. Obturation was then performed using MTA and Biodentine. Afterwards, 1.5 mm thick horizontal sections were procured from the middle one-third of all the specimens and then subjected to push-out bond test. Results were analyzed using one-way analysis of variance with post-hoc Tukey's test. RESULTS The bond strength of Biodentine and MTA to irradiated teeth was lower than non-irradiated teeth. Highest push-out bond strength was observed in non-irradiated specimens filled with Biodentine (p=0), followed by irradiated specimens filled with Biodentine (p=0); non-irradiated specimens filled with MTA (p=0); and irradiated specimens filled with MTA (p=0.9). CONCLUSION The push-out bond strength of Biodentine and MTA to root canal dentin decreased significantly post irradiation.
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Affiliation(s)
- Lochan Khullar
- Manipal Academy of Higher Education, Manipal College of Dental Sciences, Department of Conservative Dentistry and Endodontics, Manipal, Karnataka, India
| | - Nidambur Vasudev Ballal
- Manipal Academy of Higher Education, Manipal College of Dental Sciences, Department of Conservative Dentistry and Endodontics, Manipal, Karnataka, India
| | - Tan Fırat Eyüboğlu
- Istanbul Medipol University, Faculty of Dentistry, Department of Endodontics, Istanbul, Türkiye
| | - Mutlu Özcan
- University of Zurich, Clinic of Reconstructive Dentistry, Center of Dental Medicine, Director a.i. Clinic of Masticatory Disorders, Head Division of Dental Biomaterials, Zurich, Switzerland
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Cancelier PDA, Machado RG, Savaris JM, Bortoluzzi EA, Teixeira CDS, Minamisako MC, Rodrigues PM, Netto VR, Dutra-Horstmann KL, Garcia LDFR. Effect of the timing of radiation therapy on the push-out strength of resin cement to root dentine. AUST ENDOD J 2023; 49 Suppl 1:122-131. [PMID: 36251405 DOI: 10.1111/aej.12699] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 09/05/2022] [Accepted: 10/05/2022] [Indexed: 11/30/2022]
Abstract
This study investigated the effect of radiation timing on the bond strength of resin cement to intraradicular dentine. Fifty human teeth were distributed into 5 groups (n = 10): Control (nonirradiated teeth), Before-RCT (teeth irradiated before root canal treatment), After-CH (teeth irradiated after canal preparation and placement of calcium hydroxide intracanal dressing), After-RCT (teeth irradiated after completion of root canal treatment) and After-FPL (teeth irradiated after luting of a glass fibre post). Each tooth received 70 Gy irradiation. The roots were sectioned for push-out strength testing. After-RCT and After-FPL groups had significantly lower push-out strength than the control at the middle third (p < 0.05). Control and After-CH groups had a higher percentage of cohesive dentine failure. Radiotherapy after root canal obturation and post luting adversely affected the adhesiveness of resin cement to intraradicular dentine. Teeth irradiated before root canal treatment and after placement of calcium hydroxide had the best performance.
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Affiliation(s)
- Patrícia da Agostim Cancelier
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Renata Gondo Machado
- Postgraduate Program in Dentistry, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Júlia Menezes Savaris
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Eduardo Antunes Bortoluzzi
- Postgraduate Program in Dentistry, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
- Department of Diagnosis & Oral Health, Endodontics Division, University of Louisville, Louisville, Kentucky, USA
| | - Cleonice da Silveira Teixeira
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | | | - Paulo Marcelo Rodrigues
- Department of Radiotherapy, Oncology Research Centre (CEPON), Florianópolis, Santa Catarina, Brazil
| | - Vicente Ribeiro Netto
- Department of Radiotherapy, Oncology Research Centre (CEPON), Florianópolis, Santa Catarina, Brazil
| | | | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
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Influence of irrigation and laser assisted root canal disinfection protocols on dislocation resistance of a bioceramic sealer. Photodiagnosis Photodyn Ther 2022; 40:103067. [PMID: 35973550 DOI: 10.1016/j.pdpdt.2022.103067] [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: 04/12/2022] [Revised: 07/13/2022] [Accepted: 08/12/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND It is not yet clear how different irrigation protocols and intracanal laser irradiation effects bioceramic sealers. In this vitro study, we aimed to evaluate the dislocation resistance of a bioceramic root canal sealer after different laser-assisted disinfection protocols and irrigants. METHODS Sixty extracted human straight single-canal teeth were instrumented, and randomly divided into five experimental groups (n=10) according to the disinfection protocol used: group 1, conventional needle irrigation (CI) with sodium hypochlorite (NaOCl)+ethylenediaminotetraacetic acid (EDTA)+NaOCl; group 2, Photon initiated photoacoustic streaming (PIPS) of NaOCl+EDTA+NaOCl; group 3, NaOCl+EDTA+diode laser; group 4, NaOCl+EDTA+photodynamic therapy (PDT); group 5, CI with NaOCl+EDTA+Chlorhexidine (CHX); and control group without any treatment. The root canals were filled with a bioceramic root canal sealer (BioRoot RCS) using the single-cone filling technique. After three weeks of storage, the samples from each canal thirds were transversely sectioned and the push-out test was performed. RESULTS The PIPS group showed the lowest dislocation resistance values in the coronal third (p>0.05), and no difference was observed among the other groups (p<0.05). The dislocation resistance in the middle and apical thirds was the highest in the diode laser group (p<0.05). CONCLUSION Final root canal irradiation with diode laser led to improved dislocation resistance of the bioceramic sealer. PDT did not adversely affect the dislocation resistance of BioRoot RCS. The PIPS reduced the dislocation resistance values in the coronal third, but not in the middle and apical thirds.
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Roy D, Kataki R, Das L, Jain K. Influence of 2% chlorhexidine on the dislodgement resistance of AH plus, bioroot RCS, and GuttaFlow 2 sealer to dentin and sealer-dentin interface. J Conserv Dent 2022; 25:642-647. [PMID: 36591575 PMCID: PMC9795685 DOI: 10.4103/jcd.jcd_355_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/06/2022] [Accepted: 07/14/2022] [Indexed: 01/04/2023] Open
Abstract
Aim To find out the effects of 2% chlorhexidine (CHX) gel intracanal medicament on the dislodgement resistance of AH Plus, BioRoot RCS, and GuttaFlow 2 Sealer to dentin and on sealer-dentin interface. Materials and Methods Sixty single-rooted maxillary canine were taken and divided into two groups based on the treatment: Group 1 - control group (no medicament) (n = 30) and Group 2 - (GLUCO-CHeX 2% Gel) (n = 30). Further, the groups were divided according to the sealer used, namely (A) AH Plus sealer, (B) BioRoot RCS Sealer, and (c) Gutta Flow 2 sealer. Teeth were prepared using rotary instrumentation of file size 35 with a taper of 0.06 and obturation was done. 1 mm thick sections were obtained from the roots. All the sections were checked for push out bond strength using Universal testing machine and mode of failure using stereomicroscope. Some samples were evaluated for sealer-dentin interface using field emission scanning electron microscope. Results AH Plus showed higher bond strength compared to BioRoot RCS and GuttaFlow 2. There was no significant difference in the push out bond strength with or without the prior use of 2% CHX medicament (P > 0.05) and also CHX did not affect the mode of failure. However, sealer-dentin interface gap was increased with application of medicament. Conclusion Dislodgement resistance of AH Plus sealer is significantly higher than BioRoot RCS and GuttaFlow 2 sealer. The application of 2% CHX intracanal medicament before root canal obturation did not significantly affect the dislodgement resistance of the three tested sealers. 2% CHX medicament did not affect the failure mode of the sealers. Sealer-dentin interface is affected by the use of 2% CHX gel medicament.
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Affiliation(s)
- Debosmita Roy
- Department of Conservative Dentistry and Endodontics, Regional Dental College, Guwahati, Assam, India
| | - Rubi Kataki
- Department of Conservative Dentistry and Endodontics, Regional Dental College, Guwahati, Assam, India
| | - Lima Das
- Department of Conservative Dentistry and Endodontics, Regional Dental College, Guwahati, Assam, India
| | - Khushboo Jain
- Department of Conservative Dentistry and Endodontics, Regional Dental College, Guwahati, Assam, India
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