Efficacy of different methods of calcium hydroxide removal on bond strength of calcium silicate-based sealer

Abstract Background To evaluate the effect of surface treatments on the push-out bond strength of Biodentine (BD) and white mineral trioxide aggregate (WMTA) to fiber posts. Methods Two brands of fiber posts were used: Reblida post; RP and RelyX post; RX. Each type of post (n = 80/group) was divided into four groups (n = 20/group) and exposed to surface treatment as follows: Control (no treatment), sandblasting (SB), hydrofluoric acid (HF), and TiF4 4 wt/v%. Each group was further subdivided into two subgroups (n = 10/subgroup) based on the type of CSCs used as follows: Subgroup A: BD and Subgroup B: WMTA. Push-out bond strength of BD and WMTA to glass fiber posts was assessed. Data were statistically analyzed using three-way ANOVA and Tukey’s test. A Weibull analysis was performed on the push-out bond strength data. Results BD showed higher bond strength than WMTA (P < 0.001). The push-out bond strength for posts treated with TiF4 4 wt/v% showed greater bond strength than the other surface treatments (P < 0.05). The BD/RP-TiF4 4 wt/v% showed the greater characteristic bond strength (σ0) (15.93) compared with the other groups. Surface treatments modified the surface topography of glass fiber posts. Conclusions The BD/RP-TiF4 4 wt/v% showed greater bond strength compared with the other groups. The TiF4 4 wt/v% surface treatment enhanced the bond strength of BD and WMTA to glass fiber posts than the other treatments. Surface treatment of fiber post with TiF4 4 wt/v% could be used to improve the bond strength with calcium silicate-based cements.

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Effect of double antibiotic and calcium hydroxide pastes on dislodgement resistance of an epoxy resin-based and two calcium silicate-based root canal sealers

Clinical Oral Investigations ◽

10.1007/s00784-016-1877-1 ◽

2016 ◽

Vol 21 (4) ◽

pp. 1277-1282 ◽

Cited By ~ 11

Author(s):

Hakan Gokturk ◽

Emre Bayram ◽

Huda Melike Bayram ◽

Tugrul Aslan ◽

Yakup Ustun

Keyword(s):

Epoxy Resin ◽

Calcium Hydroxide ◽

Root Canal ◽

Calcium Silicate ◽

Root Canal Sealers

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Effectiveness of different irrigation protocols on calcium hydroxide removal from simulated immature teeth after apexification

Acta Biomaterialia Odontologica Scandinavica ◽

10.3109/23337931.2015.1015132 ◽

2015 ◽

Vol 1 (1) ◽

pp. 1-5 ◽

Cited By ~ 1

Author(s):

Evren Ok ◽

Mustafa Altunsoy ◽

Mehmet Tanriver ◽

İsmail Davut Çapar

Keyword(s):

Calcium Hydroxide ◽

Immature Teeth ◽

Calcium Hydroxide Removal

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Does Delayed Restoration Improve Shear Bond Strength of Different Restorative Protocols to Calcium Silicate-Based Cements?

Materials ◽

10.3390/ma11112216 ◽

2018 ◽

Vol 11 (11) ◽

pp. 2216 ◽

Cited By ~ 14

Author(s):

Paulo Palma ◽

Joana Marques ◽

Rui Falacho ◽

Alexandra Vinagre ◽

João Santos ◽

...

Keyword(s):

Bond Strength ◽

Calcium Silicate ◽

Shear Bond Strength ◽

Proper Time ◽

Testing Machine ◽

Glass Ionomer Cement ◽

Mineral Trioxide Aggregate ◽

Bonding System ◽

Post Hoc ◽

Ionomer Cement

The purpose of the present study was to assess the proper time to perform a restoration (immediately or delayed) after placement of two calcium silicate-based cements (CSCs) and to test the performance of two different restorative protocols regarding shear bond strength (SBS). Seventy-five acrylic blocks were randomly divided into five groups (n = 15). Specimens were filled with either ProRoot MTA (Dentsply Tulsa Dental) or Biodentine (Septodont). The restoration was performed at an immediate (12 min) or delayed (seven days) timeframe, using a resin-based flowable composite (SDR) (bonded to the CSC using a universal bonding system) or glass ionomer cement (GIC) as restorative materials. SBS was measured using a universal testing machine. Fractured surfaces were evaluated, and the pattern was registered. Statistical analysis was performed using the Dunn–Sidak post hoc test (P < 0.05). Biodentine/immediate SDR showed the highest mean SBS value (4.44 MPa), with statistically significant differences when compared to mineral trioxide aggregate (MTA)/GIC (1.14 MPa) and MTA/immediate SDR (1.33 MPa). MTA/GIC and MTA/immediate SDR did not present significant differences regarding SBS. No statistical differences were verified concerning mean SBS between both CSCs within the 7 day groups. MTA/delayed SDR (3.86 MPa) presented statistical differences compared to MTA/immediate SDR, whereas no differences were observed regarding Biodentine performance (Biodentine/immediate SDR and Biodentine/delayed SDR (3.09 MPa)). Bonding procedures directly on top of MTA might be preferably performed at a delayed timeframe, whereas Biodentine might allow for immediate restoration.

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Passive ultrasonic irrigation in calcium hydroxide removal from root canals: a sem/eds analysis

Journal of Research in Dentistry ◽

10.19177/jrd.v3e32015668-677 ◽

2015 ◽

Vol 3 (3) ◽

pp. 668

Author(s):

Fernanda Hoffmann Busanello ◽

Angela Longo Do Nascimento ◽

Lilian Tietz ◽

Mirela Sangoi Barreto ◽

Ricardo Abreu Da Rosa ◽

...

Keyword(s):

Calcium Hydroxide ◽

Root Canal ◽

Control Group ◽

Passive Ultrasonic Irrigation ◽

Root Canals ◽

Eds Analysis ◽

Ultrasonic Irrigation ◽

Calcium Hydroxide Removal ◽

And Control ◽

Elementary Chemical

AIM: The aim of this study was to evaluate the efficacy of different lengths of time of passive ultrasonic irrigation (PUI) in removing calcium hydroxide (CH) paste from root canal, using scanning electron microscopy and energy dispersive spectrometry (SEM/EDS). MATERIAL AND METHODS: Fifty-four human premolars were used. After coronal access, a size #15 K-file was used to obtain apical patency. Root canal preparation was performed using WaveOne 40.08 instruments. CH paste was placed into the root canal. Specimens were stored in a humid environment, and after seven days, they were divided into five groups (n=12) according to the irrigation protocols: Manual– a size #40 K-file; PUI/1– 1 min; PUI/2– 2 min; PUI/3– 3 min; and Control– without CH paste. An elementary chemical microanalysis (SEM/EDS) was performed to quantify the presence of calcium on the dentinal walls. RESULTS: The percentage of calcium was higher in all experimental groups when compared to the control group (P < 0.05); but no differences among them were found (P > 0.05). CONCLUSION: The amount of calcium hydroxide paste on the dentinal walls was not dependent on length of time of ultrasonic activation. SEM/EDS analysis seems to be a reliable method to assess CH paste removal from the root canals.

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