The effect of antibiotic pastes on microhardness of dentin

Yılmaz, Şehnaz; Dumani, Ayşin; Yoldaş, Oğuz

doi:10.1111/edt.12193

Cited by 31 publications

(24 citation statements)

References 37 publications

(53 reference statements)

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“…The use of microhardness tests to determine the mineral content and mechanical strength of root canal dentine is a common approach used in the literature (Yassen et al 2014, Yilmaz et al 2016, Naseri et al 2019. Vickers microhardness test (VHT) is suitable for determining the hardness of brittle materials, such as tooth structure.…”

Section: Discussionmentioning

confidence: 99%

Surface and structural changes in root dentine by various chelating solutions used in regenerative endodontics

et al. 2020

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Aim To evaluate the effects of the prolonged use of various irrigant solutions used during regenerative endodontic procedures on the physical and chemical structure of root canal dentine in extracted human teeth. Methodology Sixtyroot dentine samples from extracted, single‐rooted, human teeth were assigned to 10 groups. Eight groups were irrigated with 1.5% NaOCl for 5 min, followed by 3%, 10%, 17% EDTA or 10% citric acid (CA) for 5 or 10 min. One group received only NaOCl irrigation, and samples with only distilled water irrigation were used as a control group. The changes in microhardness and flexural strength were determined using Vickers and 3‐point flexural tester, respectively. Molecular and elemental compositions were recorded using FTIR and EDS spectroscopy. Data were analysed using one‐way anova, Kruskal–Wallis and Mann–Whitney U tests. Results The application of 1.5% NaOCl for 5 min did not affect the mineral content or microhardness of dentine (P > 0.05). However, it significantly decreased the dentine collagen peak values (P < 0.05), which was similar to the control group after the use of chelating agents (EDTA and 10% of CA) (P > 0.05). The effect of EDTA on the inorganic content was not concentration and time dependent (P > 0.05). CA resulted in a significantly greater reduction in the inorganic contents compared with the control and EDTA groups (P < 0.05). Regardless of the time, EDTA and CA significantly decreased dentine microhardness compared to the control (P < 0.05) with the greatest reduction in the CA groups (P < 0.05). NaOCl alone was associated with the lowest flexural strength, while none of the other irrigation regimens significantly decreased the flexural strength compared to the control group (P> 0.05). Conclusions Use of 1.5% NaOCl for 5 min decreased the collagen content of samples of human dentine from extracted teeth while EDTA and 10% citric acid mostly affected the inorganic content and microhardness of dentine surfaces. None of the irrigant solutions significantly decreased the mechanical properties of the entire dentine specimen.

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Section: Discussionmentioning

confidence: 99%

Surface and structural changes in root dentine by various chelating solutions used in regenerative endodontics

et al. 2020

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“…The changes in the superficial dentin structure made by irrigants and ICMs can affect the potential of dentin to adhere to root canal filling materials [ 5 ]. Antibiotic pastes consistently decrease dentin microhardness, cause dentin erosion, and increase roughness [ 39 42 43 44 45 ]. However, the literature contains inconsistent results regarding the effects of CH on dentin properties within 1 month or less [ 46 ].…”

Section: Discussionmentioning

confidence: 99%

Retention of BioAggregate and MTA as coronal plugs after intracanal medication for regenerative endodontic procedures: an ex vivo study

Amin

Gawdat

2018

Restor Dent Endod

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ObjectivesThis study compared the retention of BioAggregate (BA; Innovative BioCeramix) and mineral trioxide aggregate (MTA; Angelus) as coronal plugs after applying different intracanal medications (ICMs) used in regenerative endodontics.Materials and MethodsOne-hundred human maxillary central incisors were used. The canals were enlarged to a diameter of 1.7 mm. Specimens were divided into 5 groups (n = 20) according to the ICM used: calcium hydroxide (CH), 2% chlorhexidine (CHX), triple-antibiotic paste (TAP), double-antibiotic paste (DAP), and no ICM (control; CON). After 3 weeks of application, ICMs were removed and BA or MTA were placed as the plug material (n = 10). The push-out bond strength and the mode of failure were assessed. The data were analyzed using 2-way analysis of variance, the Tukey's test, and the χ2 test; p values < 0.05 indicated statistical significance.ResultsThe type of ICM and the type of plug material significantly affected bond strength (p < 0.01). Regardless of the type of ICM, BA showed a lower bond strength than MTA (p < 0.05). For MTA, CH showed a higher bond strength than CON, TAP and DAP; CHX showed a higher bond strength than DAP (p < 0.01). For BA, CH showed a higher bond strength than DAP (p < 0.05). The mode of failure was predominantly cohesive for BA (p < 0.05).ConclusionsMTA may show better retention than BA. The mode of bond failure with BA can be predominantly cohesive. BA retention may be less affected by ICM type than MTA retention.

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“…3 The treatment procedures involve TAP removal, followed by the placement of mineral trioxide aggregate (MTA), which has been shown to effectively support new hard-tissue formation in the apical areas of affected immature necrotic teeth. 4 Despite the regenerative effects of TAP, it is acidic 5 and can result in insufficient bonding to dentin 6 when it is not removed thoroughly from the root canal.…”

Section: Introductionmentioning

confidence: 99%

Effect of irrigation technique for removal of triple antibiotic paste on bond strength of MTA to root dentin

et al. 2016

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This study evaluated the bond strength of mineral trioxide aggregate (MTA) to root canal dentin after the performance of various irrigation procedures to remove triple antibiotic paste (TAP). A total of 56 single-rooted human mandibular premolars were instrumented using a rotary system to size 40 and divided randomly into a control group (no intracanal dressing) and three experimental groups (TAP application for 28 days). TAP was then removed by rinsing with 10 mL 2.5% NaOCl using three irrigation systems (Vibringe sonic irrigation, CanalBrush, and syringe irrigation). The coronal and middle parts of root canals were then obturated with MTA. After storage for 1 week, each specimen was embedded in an acrylic block and sectioned horizontally (2-mm-thick slices) at two levels (coronal and middle). Bond strength of MTA to root canal dentin was assessed in 28 samples per group via push-out test using a universal testing machine. Data from the four groups were compared using one-way analysis of variance. Tukey's test was used for multiple comparisons. Push-out bond strength values were significantly higher in the control and Vibringe groups than in the CanalBrush and syringe irrigation groups (p < 0.001). TAP removal from root canals with the Vibringe irrigation system may increase the push-out bond strength of MTA compared with the use of the CanalBrush or syringe irrigation.

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The effect of antibiotic pastes on microhardness of dentin

Abstract: Applying DAP and TAP for 4 weeks significantly reduced the microhardness values of dentin discs compared with the baseline values.

Cited by 31 publications

References 37 publications

Surface and structural changes in root dentine by various chelating solutions used in regenerative endodontics

Surface and structural changes in root dentine by various chelating solutions used in regenerative endodontics

Retention of BioAggregate and MTA as coronal plugs after intracanal medication for regenerative endodontic procedures: an ex vivo study

Effect of irrigation technique for removal of triple antibiotic paste on bond strength of MTA to root dentin

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