Effect of ultrasonic tip and root-end filling material on bond strength

Vivan, Rodrigo Ricci; Guerreiro-Tanomaru, Juliane Maria; Bernardes, Ricardo Affonso; Reis, José Maurício dos Santos Nunes; Duarte, Marco Antônio Húngaro; Tanomaru‐Filho, Mário

doi:10.1007/s00784-015-1708-9

Cited by 12 publications

(12 citation statements)

References 43 publications

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“…In addition, the difference observed in relation to the presence of debris may also have a key impact on the prognosis as it interferes with the adhesion of calcium silicate-based cements to the dental walls. Vivan et al [ 62 ] found highest bond strength values when preparing with CVD tips, irrespective of the root-end filling material used, meaning that root-end preparation with the CVD tips positively influences the bond strength of root-end filling materials.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Root-End Preparation with Two Different Endodontic Microsurgery Ultrasonic Tips

et al. 2020

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The aim of this study is to compare root-end preparation performed with two different ultrasonic tips—CVDentus and NSK—and respective time requirements. After root-end resection, 32 teeth were randomly divided in two groups, according to the ultrasonic tip used for root-end preparation. Preparation time was recorded. Photomicrographs were taken to assess the following parameters: root surface microcracking, marginal integrity and presence of debris. One ultrasonic tip from each group was analyzed through scanning electron microscopy before and after root-end preparation. The significance level was set at α = 0.05. Incidence of microcracks in both groups was 12.5%. Solely intracanal microcracking was found, consistently positioned within the widest side of the remaining dentine. No statistically significant differences were verified between both experimental groups regarding marginal integrity (p = 0.102) and preparation time (p = 0.780), whereas statistical differences (p = 0.003) were found concerning the presence of debris (the minimum registered score was mostly verified in CVDentus group). NSK tips showed major morphological changes, with extensive surface wear and noticeable loss of particles, which was not verified on CVDentus tips. Our findings suggest significant differences regarding root-end preparation walls quality, with CVDentus tips showing better results. Concerning microcracking, as well as preparation time and marginal integrity, both ultrasonic tips showed similar results. Qualitative analysis exposed NSK tips major morphological changes and wear after use, which was not verified on CVDentus tips.

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Section: Discussionmentioning

confidence: 99%

Evaluation of Root-End Preparation with Two Different Endodontic Microsurgery Ultrasonic Tips

et al. 2020

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“…It was previously reported that the BS of endodontic filling materials should be as high as possible, not only to ensure efficient root canal sealing but also to ensure long-term endodontic treatment success. 6,21,22 Furthermore, the bonding interface must remain intact over time and not compromise clinical procedures, such as the removal of part of the sealing material for the installation of root canal posts, because the teeth are subjected to mechanical forces that can displace the sealing material beyond root canal limits. 23,24 Therefore, in the present study, the BS of the filling material was evaluated after 24 h and 6 months of storage in water.…”

Section: Discussionmentioning

confidence: 99%

Chlorhexidine and proanthocyanidin enhance the long-term bond strength of resin-based endodontic sealer

et al. 2018

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The aim of this study was to evaluate the effects of proanthocyanidin (PA) and chlorhexidine (CHX) on the bond strength (BS), failure pattern, and resin-dentin interface morphology of the endodontic sealers EndoREZ and AH Plus after 24 h and 6 months of water storage. A total of 120 prepared bovine roots were divided into six groups: AH Plus, CHX+AH Plus, PA+AH Plus, EndoREZ, CHX+EndoREZ, and PA+EndoREZ. Dentin was treated for 1 or 5 min with 2% CHX or 15% PA, respectively. Roots were filled and stored in water for 24 h or 6 months (n = 10). Root slices were subjected to push-out test and scanning electron microscopy (SEM). Data were compared using two-way ANOVA and student's t-test (α = 5%). BS decreased over time for AH Plus and untreated EndoREZ (p < 0.05). At 24 h, AH Plus had higher BS than EndoREZ (p < 0.001), with no differences among treatments for both sealers (p > 0.05). At 6 months, EndoREZ had higher BS values for CHX and PA than control (p < 0.05). AH Plus had higher BS than EndoREZ (p < 0.001), while with CHX or PA, similar BS was observed in both sealers (p > 0.05). Cohesive and mixed failures were observed in all groups. SEM revealed sealer tags in the root dentin. In conclusion, BS decreased with time and AH Plus had higher BS than EndoREZ in untreated dentin; however, CHX or PA enhanced long-term BS of EndoREZ. Overall, dentin treatment affected failure pattern and resin-dentin interface morphology, particularly for EndoREZ.

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“…8 The factors that play a role in adhesion of root end fillings are the type of material used, burs used for the cavity preparation and the pH value of the environment. 9,10 In this study push out bond strength of two calcium silicate based materials i.e ; MTA and Biodentine were used and compared against Bone Cement. The characteristic of calcium silicate-based materials is to precipitate carbonated apatite in the presence of tissue fluids, followed by the formation of interfacial layer and tag like structures in the dentin.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Push Out Bond Strength of Two Calcium Silicate Based Cements with Bone Cement in Retrograde Cavities Prepared by Ultrasonic Retro Tips

Rashid¹,

Sp²

2019

IJCMR

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Introduction: Surgical endodontic treatment comprises of thorough debridement of pathological periradicular tissue, root end resection followed by a Class I retrograde cavity preparation and insertion of root end filling material into the prepared cavity. The aim of this study was to evaluate the push out bond strength of Biodentine, Mineral Trioxide Aggregate (MTA) and Bone Cement used in the retro cavities, prepared with ultrasonic retro tips. Material and methods: 60 human extracted single rooted teeth were selected and sectioned with a diamond disc (Horico, Germany) to standardize the root length of 15mm. The roots were instrumented with rotary ProTaper Universal (Dentsply Maillefer) system till size F2. The root canals were obturated using gutta percha (Dentsply, Maillefer) and AH Plus sealer (Dentsply, Germany). 3mm of root end resection was performed with high speed hand piece under water coolant. 3mm deep retro cavities were prepared with ultrasonic stainless steel retro tip (Woodpecker). All the specimens were divided into 3 groups (n=20) Group I: MTA (ProRoot, Tulsa Dental, USA), Group II Biodentine (Septodont, France), Group III Bone Cement (Depuy, Johnsons and Johnsons). Each material was mixed according to the manufacturers instructions and filled into the retro cavities. The specimens were sectioned perpendicularly to obtain 1mm thick slices from the apical portion and subjected to push out bond strength testing under Universal Testing Machine (Instron). Results: Biodentine showed more push out bond strength than MTA and Bone Cement. There was no significant difference between MTA and Bone Cement groups. Conclusion: Bone Cement can be considered as one of the potential retro filling material.

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Effect of ultrasonic tip and root-end filling material on bond strength

Abstract: Root-end preparation with the CVD tip positively influences the bond strength of root-end filling materials. MTA Angelus and experimental MTAS present bond strength to be used as root-end filling materials.

Cited by 12 publications

References 43 publications

Evaluation of Root-End Preparation with Two Different Endodontic Microsurgery Ultrasonic Tips

Evaluation of Root-End Preparation with Two Different Endodontic Microsurgery Ultrasonic Tips

Chlorhexidine and proanthocyanidin enhance the long-term bond strength of resin-based endodontic sealer

Evaluation of Push Out Bond Strength of Two Calcium Silicate Based Cements with Bone Cement in Retrograde Cavities Prepared by Ultrasonic Retro Tips

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