Diffusion of calcium through dentin

Gomes, Izabel Coelho; Chevitarese, Orlando; Almeida, Ney Salgado de; Salles, Milton Roedel; Gomes, Gastão Coelho

doi:10.1016/s0099-2399(96)80027-6

Cited by 31 publications

(25 citation statements)

References 10 publications

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“…It was also observed that the Ca +2 ion release was greater in the first 30 days, nearly 5 times higher than in the first seven days for the UFSC group, and this tendency was also shown by the CaPE group, for which the rate was approximately 4.5 times higher. Some authors have already reported that, in permanent teeth, the Ca +2 ions reach the external area even with the presence of root cement 8,17,24 . The Ca +2 ions diffusion from the Sealapex sealer was not related to the material, as the values found for Ca +2 ion diffusion remained below the values of the control group during the entire study period, indicating that the origin of these ions was the dental element itself, and even the sealer hardening could remove Ca +2 ions from the teeth.…”

Section: Discussionmentioning

confidence: 99%

“…For this release to occur "only" through the root walls, those specimens presenting resorption of the middle root third visible with a magnifier (20x magnification) were excluded during macroscopic selection. Also, apical resorption areas and the foramen were sealed to avoid leakage of ions through these areas 8,9,24 . The teeth were kept with the root submerged only in saline solution, to avoid that the coronary part interfered with the release of Ca +2 ions.…”

Section: Discussionmentioning

confidence: 99%

“…Ca +2 ions are necessary for the immunological reaction of the complement system, to reduce local inflammation and initiate the remineralization process 10,19,22 . Calcium hydroxide as a root canal dressing is widely used for permanent teeth, due to biological properties that make it one of the most effective substances, capable of dissolving tissue, helping with disinfection of the dentinal tubules, acting on bacteria, stimulating the repair process of periapical lesions, helping the osteogenic mechanism and being capable of creating an apical barrier to allow adequate filling of a wide canal 6,8,12,13,16,23,27 . Considering these points previously mentioned, the purpose of this research was to evaluate the diffusion of OH -and Ca +2 ions from materials based on calcium hydroxide -Ca(OH) 2 , through the intact roots of deciduous teeth by using pH meter and atomic absorption spectrometer, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Hydroxyl and calcium ions diffusion from endodontic materials through roots of primary teeth - in vitro study

Nunes

Rocha

2005

J. Appl. Oral Sci.

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) and hydroxyl (OH -) ions from materials with a calcium hydroxide base -Ca(OH) 2 through the intact roots of deciduous teeth. This diffusion of ions is important for periapical healing. Forty-six deciduous teeth were selected and instrumented to their working length with #40 files. The teeth were washed during cleaning and shaping with a 1% sodium hypochlorite (NaOCl) solution. The canals were dried with paper points. The teeth were divided into 4 groups based on the sealer type, with 10 specimens in each group. A fifth group of 6 teeth without sealer constituted the control group. The materials used as sealers were: Ca(OH) 2 paste associated to propylene glycol (CaPE) thickened at the proportion of 2:1 w/v; UFSC (Federal University of Santa Catarina) paste -a mixture of 0.3g of zinc oxide with 0.3g of Ca(OH) 2 with 0.2ml of olive oil 1:1 w/w; Vitapex ® and Sealapex ® . The coronal access was sealed with a glass ionomer after the root had been filled with each sealer. A one-third apical surface and foramen was hardpressed with Araldite ® . The teeth were stored individually in flasks containing saline solution at 37 o C and 100% humidity. The OH -and Ca +2ions diffusion levels were determined using a pH meter and an atomic absorption spectrometer. Data were collected at 48 hours and at intervals of 7, 30, 45 and 60 days. Statistical analysis was performed using ANOVA to compare groups. In the pH evaluation, the CaPE group presented the largest OH-ions diffusion, which peaked at sixty days (p=0.0309), when compared to the other groups (p<0.0001). In relation to amount of Ca +2 ions released, the CaPE paste showed the best results, followed by the UFSC's paste. These results suggest that the CaPE paste was the material that allowed the highest diffusion of OH -and Ca +2 ions. Uniterms: Calcium hydroxide; Atomic absorption spectrophotometer; Ion exchange; Root canal filling materials; Primary teeth. objetivo desta pesquisa foi avaliar a difusão de íons Ca +2 e OH -de materiais endodônticos a base hidróxido de cálcio -Ca(OH) 2 , através da raiz intacta de dentes decíduos. 46 dentes decíduos foram selecionados e instrumentados em seu comprimento de trabalho até a lima # 40, e irrigados durante o preparo com solução de hipoclorito de sódio 1%, e secos com cones de papel absorvente. Os dentes foram separados em 4 grupos de 10 dentes cada conforme o material obturador, e um grupo controle com 6 dentes permaneceu vazio. Os materiais utilizados como obturadores foram: pasta de Ca(OH) 2 associada ao propilenoglicol espessada (CaPE) na proporção de 0,4g de pó para 0,2ml de líquido; pasta UFSC, mistura de 0,3g de pó de óxido de zinco com 0,3g de pó de Ca(OH) 2 associado a 0,2ml de óleo de oliva; Vitapex® e Sealapex®. Após a obturação, todos os dentes tiveram o forame e terço apical selado com Araldite® e o acesso coronal selado com ionômero de vidro, permanecendo em frascos individuais com a raiz submersa em solução fisiológica, em estufa a 37

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hydroxyl and calcium ions diffusion from endodontic materials through roots of primary teeth - in vitro study

Nunes

Rocha

2005

J. Appl. Oral Sci.

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“…13 En este estudio de investigación se comprobó que la liberación del ión calcio se mantuvo constante inclusive hasta el día 30 .…”

Section: Discussionunclassified

“…(2) Se debe tener en cuenta que el diente libera calcio por sí solo y no es adecuado tenerlo en cuenta para este estudio. 13 Por esta razón, se utilizaron cinco dientes sin ningún procedimiento para el control negativo.…”

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Capacidad De Difusión Del Ión Calcio a Través De La Dentina Radicular Utilizando Cuatro Tipos De Vehículos: Anestesia, Hidróxido De Calcio Calcifar®, Glicerina Y Polietilenglicol

Becerra¹,

Becerra

Moreno

2018

UstaSalud

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Objetivo: Determinar la capacidad de difusión del ión calcio a través de la dentina radicular usando cuatro tipos de vehículos: Anestesia, hidróxido de calcio líquido Calcifar®, glicerina y polietilenglicol. Materiales y métodos: Se agruparon al azar, veinte dientes obturados con pasta preparada de hidróxido de calcio mezclado con hidróxido de calcio líquido, Calcifar®, 20 con anestesia, 20 con glicerina, 20 con polietilenglicol, 5 con Ultracal® (control positivo) y 5 sin procedimiento alguno. Los dientes fueron decoronados, se prepararon con la técnica de preparación biomecánica Crown -Down EDTA (RCprep) y se irrigaron con hipoclorito de sodio(NaOCI) al 5.25%. Se secaron con puntas de papel y se obturaron con pasta de hidróxido de calcio preparada. Luego fueron sumergidos en 2 mi de agua destilada estéril para realizar medidas de la concentración del ión calcio con el método calorimétrico, utilizando un Espectrofotómetro en diferentes períodos de tiempo: a los 1, 5, 15 y 30 días. Resultados: El mayor grado de difusión del ión calcio se obtuvo, el primer día, con anestesia difundiendo 39.6 mg/dl; en las comparaciones efectuadas entre períodos de tiempo con relación al vehículo, el grupo de anestesia 39.6mg/dl ± 26.4, hidróxido de calcio líquido Calcifar® 2.4mg/dl ± 41.3 y glicerina 37.Smg/dl ± 36.9. La difusión disminuyó significativamente a partir del quinto día. En todos los períodos de tiempo el vehículo que presentó mayor liberación de ión calcio fue la anestesia y la menor liberación fue dada por el polietilenglicol siendo constante durante los tiempos analizados. Conclusiones: El mejor vehículo para la liberación del hidróxido de calcio fue la anestesia. Los vehículos viscosos demostraron mantener constante la liberación de los iones calcio en todos los tiempos. [Becerra L, Becerra P, Moreno GC. Capacidad de difusión del ión calcio a través de la dentina radicular utilizando cuatro tipos de vehículos: Anestesia, hidróxido de calcio líquido Calcifar®, CALCIUM HYDROXIDE ION CAPABILITY OF DIFFUSION THROUGH THE RADICULAR DENTINE USING FOUR TYPES OF VEHICLES: ANAESTHESIA, LIQUID CALCIUM HYDROXIDE (CALCIFAR®), GLYCERIN AND POLYETHILGLYCOL ABSTRACTObjective: To determine the capacity of diffusion of the calcium ion through the radicular dentine using four vehicles: Anaesthesia, liquid calcium hydroxide, Calcifar®, glycerin and polyethilglycol. Materials and methods:The specimens were randomly grouped. Twenty teeth were filled with calcium hydroxide in paste mixed with aqueous calcium hydroxide (Calcifar®), 20 with anaesthesia, 20 with glycerin, 20 with polyethilglycol, 5 were filled with Ultracal and 5 were left with no treatment. The crowns of the teeth were eliminated, prepared with CROWN -DOWN biomechanical technique, EDTA (RCprep) was used and irrigated with NaOCl at 5.25%. They were dried with paper points and filled with calcium hydroxide then divided into 4 experimental groups and 1 control group. They were immersed in to 2 mi of sterile distilled water, to make measures of the ion calcium concentration w...

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The Effect of Long-term Dressing with Calcium Hydroxide on the Fracture Susceptibility of Teeth

Kahler

Shetty

Andreasen

et al. 2018

Journal of Endodontics

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Diffusion of calcium through dentin

Cited by 31 publications

References 10 publications

Hydroxyl and calcium ions diffusion from endodontic materials through roots of primary teeth - in vitro study

Hydroxyl and calcium ions diffusion from endodontic materials through roots of primary teeth - in vitro study

Capacidad De Difusión Del Ión Calcio a Través De La Dentina Radicular Utilizando Cuatro Tipos De Vehículos: Anestesia, Hidróxido De Calcio Calcifar®, Glicerina Y Polietilenglicol

The Effect of Long-term Dressing with Calcium Hydroxide on the Fracture Susceptibility of Teeth

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