Uso efectivo de los adhesivos de octava generación / Effective use of eighth generation adhesives

Introducción: se realizó una revisión bibliográfica con el objetivo de conocer, analizar y comparar los diferentes tipos de adhesivos de octava generación que se encuentran en el mercado y la diferencia que existe entre cada uno. Los adhesivos universales han demostrado mejoras en su resistencia, sobre todo en las técnicas de aplicación y en las propiedades de estos materiales, al mejorar la fuerza adhesiva para que el odontólogo pueda brindar tratamientos restaurativos exitosos. Objetivo: conocer, analizar y comparar los diferentes tipos de adhe- sivos de la octava generación empleados en odontología. Material y métodos: se realizó una búsqueda en las bases de datos electrónicas PubMed, BVS, Redalyc y ScienceDirect. Se utilizaron 32 artículos que cumplieron con los criterios predeterminados y la especificidad reque- rida para la pregunta de investigación. Conclusiones: se demostró que la tecnología cada día avanza, sobre todo en el área de los adhesivos, ya que éstos son de mucha utilidad en el día a día del odontólogo; es importante conocer cada uno de éstos, puesto que es un poco complejo seleccionar el correcto, mas no el uso. En la actualidad, existen diversas opciones por las que el odontólogo puede optar, es por ello que el pro- fesional debe estar capacitado sobre cada una de las diferentes marcas existentes y, de acuerdo al tratamiento, debe elegir cuál es mejor utilizar en una rehabilitación. Es importante para el odontólogo conocer estos materiales, ya que esto lo beneficiará al momento de llevar un plan de tratamiento restaurador (AU)

Introduction: a bibliographic review was carried out to learn about, analyze, and compare the different types of eighth-generation adhesives on the market and the difference between each one. Universal adhesives have demonstrated improvements in their resistance, especially in the application techniques and properties of these materials, improving the adhesive strength so that the dentist can provide successful restorative treatments. Objective: to know, analyze and compare the different types of eighth-generation adhesives used in dentistry. Material and methods: a search was made of the following electronic databases: PubMed, BVS, Redalyc, ScienceDirect. Finally, 32 articles that met the predetermined criteria and the specificity required for the research question were used. Conclusions: it was demonstrated that technology is advancing every day, especially in the area of adhesives since these are very useful in the daily life of the dentist. It is important to know each one of these since it is a little complex at the moment of selecting the correct one, but not the use. Currently, there are several options that the dentist can choose, which is why the professional must be trained on each of the various existing brands and according to the treatment which is the best to use at the time of rehabilitation. The dentist needs to know these materials since they will benefit him/her when carrying out a restorative treatment plan (AU)

Different bonding agents effect on adhesive bond strength: lithium disilicate glass ceramic / Efeito de diferentes agentes de união na cimentação adesiva em superfície cerâmica de dissilicato de lítio

Introduction: The silanization of the ceramic surface prior to applying the adhesive and/or resinous materials plays an important role in bond strength. Nowadays, a new family of adhesive systems has been introduced into the market, aiming to simplify the technique of adhesive procedures during cementation. Objective: To investigate the effectiveness of different bonding agents containing silane and primer on Lithium Disilicate Glass Ceramic (LD) surface by shear bond strength tests. Material and method: 130 LD ceramic blocks were included in acrylic resin, polished and washed in ultrasound for 10 minutes. The specimens were divided into 2 groups according to surface treatment: Polished Surface (PS); Hydrofluoric Acid 9.5% - 20s (HF). Each group was divided into 5 subgroups (n = 13) according to bonding agent type: metallic primer containing MDP (ZPrimePlus, Bisco Inc); two traditional silanes (MonobondPlus, IvoclarVivadent / Porcelain Prime, Bisco Inc.); mixture of silane and resin (Kerr Silane, Kerr); mixture of silane and universal adhesive (Single-bond Universal, 3M Espe). The specimens were mounted in a standard device for shear testing (UltradentBonding Assembly), cemented with dual resin cement (RelyX UltimateTM, 3M Espe.) and photo-polymerized for 20s. The samples were tested after 24 hours and 3 months of storage in distilled water at ±36 °C. The data were analyzed by 3-Way Anova and Tukey's test (α = 5%). Result: Shear bond strength (SBS) was significantly influenced by surface treatment, bonding agent used and storage (p <0.001). Conclusion: Adequate adhesive bond strength to Lithium Disilicate Glass Ceramic can be obtained with traditional silanes, combined with HF acid pretreatment surface.

Introdução: A silanização da superfície cerâmica antes da aplicação do adesivo e/ou materiais resinosos desempenha um papel importante na resistência adesiva. Atualmente, uma nova família de sistemas adesivos foi introduzida no mercado, visando simplificar a técnica dos procedimentos adesivos durante a cimentação. Objetivo: Investigar a eficácia de diferentes soluções contendo silano e primer na superfície de cerâmicas de Dissilicato de Lítio (DLT) por meio de testes de resistência adesiva por cisalhamento. Material e método: 130 blocos cerâmicos DLT foram incluídos em resina acrílica, polidos e lavados em ultra-som por 10 minutos. Os espécimes foram divididos em 2 grupos de acordo com tratamento de superfície: Superfície Polida (PS); Ácido Hidro-Fluorídrico 9,5% - 20s (HF). Cada grupo foi dividido em 5 sub-grupos (n = 13) de acordo com o tipo de primer/silano: primer metálico contendo MDP (ZprimePlus, Bisco Inc); dois silanos tradicionais (MonobondPlus, IvoclarVivadent / Porcelain Prime, Bisco Inc.); mistura de silano e resina (Kerr Silane, Kerr); mistura de silano e adesivo universal (Single-bond Universal, 3M Espe). Os espécimes foram montados em um dispositivo padrão (UltradentBonding Assembly) para teste de cisalhamento Bisco Shear Bond Tester), cimentados com cimento resinoso dual (RelyX UltimateTM, 3M Espe.) e foto-polimerizados por 20s. O teste foi realizado após o período de: 24 horas e 3 meses de armazenamento em água destilada à ±36 °C. Os dados foram analisados por 3-Way Anova e Teste de Tukey (α=5%). Resultado: A resistência adesiva ao cisalhamento (SBS) foi significativamente influenciada pelo tipo de tratamento da superfície, pelo tipo de agente de união utilizado e pelo armazenamento (p<0,001). Conclusão: Adequada resistência adesiva pode ser obtida com silanos tradicionais, combinados com o pré-tratamento de superfície com ácido HF.

Comparación in vitro de la resistencia adhesiva de los sistemas adhesivos grabado y enjuague y autograbado / In vitro Comparison of the adhesive strength of the etch and rinse adhesive systems and self etching

Resumen El propósito del estudio fue comparar in vitro la resistencia adhesiva de los sistemas Etch and rinse (grabado y enjuague), 4ta y 5ta generación; y los sistemas Self Etch (autograbado), 6ta y 7ma generación. Se realizó un estudio descriptivo, comparativo. Se utilizaron 20 terceros molares extraídos por motivos ortodóncico y profilácticos. Los cuales fueron cortados por la mitad y se obtuvo 40 muestras, en forma aleatoria los dientes fueron divididos en cuatro grupos, 10 con 4ta generación, 10 con 5ta, 10 con 6ta y 10 con 7ma. Se realizó una prueba de tracción vertical medida en kilogramos fuerza, para luego ser transformados a megapascales (Mpa). Las resinas de 4ta generación obtuvieron una resistencia adhesiva de 29,9 Mpa, las de 5ta una resistencia de 16,9 Mpa, la de 6ta una resistencia de 27,5 Mpa y las de 7ma generación una resistencia de 11,0 Mpa. Los resultados se sometieron a pruebas de normalidad mediante la prueba de Shapiro Wilk, y que fueron analizados mediante el ANOVA de un factor, y se encontró diferencias estadísticamente significativas entre los cuatro grupos de estudio con un valor p de 0,001. Se concluye que el sistema adhesivo de 4ta generación clasificado como Etch and Rinse presentó mejor resistencia adhesiva, seguido del adhesivo de 6ta generación clasificado como Self Etch.

Abstract The purpose of the study was to compare in vitro the adhesive strength of the Etch and Rinse systems of the 4th and 5th generation; and Self Etch systems of the 6th and 7th generation. A descriptive, comparative study was carried out. Twenty third molars were used for this study, (these molars were extracted for orthodontic and prophylactic purposes). Each teeth were cut into two pieces obtaining 40 pieces in total, then they were chosen randomly of which 10 pieces were cut with the 4th generation adhesive strength, 10 with the 5th generation, 10with the 6th generation and 10th with the 7th generation of the adhesive. A vertical traction test was performed, measured in kilograms force, and then transformed into megapascals (Mpa). The 4th generation resins obtained an adhesive resistance of 29.9 Mpa, the 5th generation resins obtained a resistance of 16.9 Mpa, the 6th generation obtained a resistance of 27.5 Mpa and the 7th generation obtained a resistance of 11.0 Mpa. The results were subjected to normality tests using the Shapiro Wilk test. These results were analyzed using the oneway ANOVA, finding statistically significant differences between the four study groups with a p-value of 0.001. As a conclusion; the 4th generation adhesive system classified as Etch and Rinse showed better adhesive strength, followed by the 6th generation adhesive system classified as Self Etch .

Evaluación del grado de sellado marginal y resistencia adhesiva de restauraciones de resina compuesta con adhesivo convencional en dentición primaria y definitiva / Evaluation of microleakage and strength adhesive of composite resin restorations with total etch adhesive system in primary and permanent teeth

El presente estudio evaluó el grado de sellado marginal y resistencia adhesiva de restauraciones de resinas compuestas confeccionadas con un sistema adhesivo de grabado y lavado en dentición primaria y definitiva. Para realizar ambos test se utilizaron 20 piezas primarias y 20 piezas definitivas. En resistencia al cizallamiento, los dientes fueron seccionados longitudinalmente y se les adhirió un cilindro de resina compuesta, utilizando la técnica adhesiva de grabado y lavado para ambas denticiones. Posteriormente, fueron testeados en una máquina de ensayos universales Tinius Olsen, aplicando una fuerza de cizallamiento de 200 kg y a una velocidad de cabezal de 0,2 cm/min. Para el test de sellado marginal, se les realizó una preparación cavitaria clase V, por vestibular/palatino estandarizada. Luego se les confeccionaron restauraciones de resina compuesta con la técnica de grabado y lavado, y se sometieron al termociclado con azul de metileno al 2%; después fueron cortados y observados al microscopio óptico estereoscópico con aumento de lupa, para medir el porcentaje de microfiltración obtenido. El valor promedio de la resistencia adhesiva al cizallamiento para dentición primaria fue de 8,49 Mpa, y de 9,52 Mpa para dentición definitiva, no encontrándose diferencias estadísticamente significativas entre los grupos en estudio. En la investigación sobre el grado de sellado marginal se evaluó el porcentaje de microfiltración y tampoco se encontraron diferencias estadísticamente significativas, lo que señalaría que ambos tejidos son igualmente susceptibles de ser tratados adhesivamente mediante la técnica de hibridación.

The present study evaluated the degree of marginal seal and adhesive resistance of composite resin restorations prepared with an etch and rinse adhesive system in primary and definitive dentition. To perform both tests, 20 primary pieces and 20 permanent pieces were used. In the shear strength resistance, the teeth were sectioned longitudinally and were adhered to composite resin cylinder, using the etch and rinse technique for both dentitions. They were then tested on a Tinius Olsen universal testing machine, applying a shear force of 200 kg and a head speed of 0.2 cm/min. For the margin seal test, a class V cavity preparation of standardised vestibular/palatine was made. The composite resin restorations were made with the etch and rinse technique and were subjected to thermocycling with 2% methylene blue. Later, they were cut and observed using a stereoscopic optical microscope with loop magnification to measure the percentage of microfiltration obtained. The mean value of the adhesive resistance to shearing for primary dentition was 8.49 Mpa, and 9.52 Mpa for permanent teeth, with no statistically significant differences being found between the groups studied. In the test on the degree of margin seal the percentage microfiltration was measured, with no statistically significant differences being found either. The results showed that both tissues are equally susceptible to being treated adhesively using the hybrid technique.

The Influence of Surface Roughness of Tooth Preparation and Cement Compatibility on the Adhesive Strength / 天津医药

Objective To investigate the influence of tooth preparation surface roughness and different dental ce-ments on adhesive strength, and provide some reference information on the selection of dental rotary instruments and dental cements. Methods Sixty dentin samples were prepared and randomly divided into 3 groups. Samples from group A, B and C were grinded by diamond burs with grit-sizes of 125μm, 60μm and 28μm respectively. Two samples selected randomly from each group were observed under scanning electron microscope (SEM) for the surface microprofile. The remaining 18 samples from each group were evenly divided into 3 subgroups. Each subgroup was teamed with one of 3 dental cements:zinc polycarboxylate cement (ZP), glass ionomer cement (GI) and resin-modified glass ionomer cement (RMGI). Co-Cr alloy casts were cemented onto the dentin samples, and the adhesive strength was tested. Meanwhile, the types of failure were re-corded for each sample. Results The surface roughness of tooth preparation samples showed a downward trend in group A, group B and group C. Among the involved 3 dental cements, RMGI exhibited the highest adhesive strength, and there was no significant difference in the adhesive strength between ZP and GI. Among different combination subgroups, A-RMGI had the highest adhesive strength, B-RMGI run the second place, while C-ZP and C-GI were proved the lowest. However, there was no interaction between the two factors. Furthermore, group A mainly showed failure typesⅠandⅡ, group B evenly showed all the failure types and group C mainly showed failure typesⅡandⅢ. Conclusion The adhesive strength is related to the surface roughness. RMGI exhibits the highest adhesive efficiency. There is no obvious compatibility in particular surface roughness and dental cements.

Análise comparativa de diferentes bráquetes ortodônticos cerâmicos relativo ao teste de cisalhamento / Comparative analysis of different ceramic orthodontic brackets on shear test

A força de adesão constitui-se em uma das principais características a ser analisada, quando da seleção de determinado bráquete como instrumento para a prática ortodôntica. Sabe-se que tanto a composição quanto as características estruturais da base dos bráquetes influenciam na retenção química e mecânica dos mesmos à superfície dentária. Assim, propôs-se verificar comparativamente mediante ensaio de cisalhamento 3 marcas comerciais (Abzil®, Eurodonto® e Morelli®) de bráquetes estéticos cerâmicos policristalinos quanto a força de adesão. Foram utilizados 45 pré-molares humanos divididos aleatoriamente em 3 grupos de 15 dentes cada. Os dentes foram incluídos em resina acrílica com a face vestibular perpendicular à base do troquel, e os bráquetes foram colados com sistema adesivo ortodôntico Transbond XT® (3M Unitek) e submetidos ao cisalhamento em máquina de ensaio universal (EMIC DL 30000). A força de adesão foi computada no momento da cisão pelo software TESC, versão 1.01, medida em Megapascal (MPa). Os resultados demonstraram resistência adesiva para o Grupo I de 28,01 MPa (± 9,88), Grupo II 20,23 MPa (± 7,06) e Grupo III 22,35 Mpa (± 7,86). Em relação ao índice de remanescente resinoso, o Grupo I e III apresentou fratura na interface bráquete/adesivo, enquanto que o Grupo II apresentou a interface de fratura no esmalte/adesivo.

The adhesion force is one of the main characteristics to be considered when selecting a particular bracket as an instrument for the orthodontic practice. It is known that both the composition and the structural characteristics of the brackets bases influence its chemical and mechanical retention over tooth surface. Therefore this study has proposed assessment by shear test to compare three commercial brands (Abzil ®, Morelli ® and Eurodonto ®) of polycrystalline ceramic aesthetic brackets regarding their adhesion strength. Forty-five human premolars were used and randomly divided into 3 groups of 15 teeth each. Teeth were embedded in acrylic resin with the vestibular face buccal perpendicular to the base of the tube. Brackets were bonded with orthodontic adhesive system Transbond XT ® (3M Unitek) and submitted to shear in an universal testing machine (EMIC DL 30000). Adhesion force was registered at the moment of split by TESC software, version 1.01, as Megapascal (MPa). The results showed bond strength of 28.01 MPa (± 9.88) for Group I, 20.23 MPa (± 7.06) for Group II, and 22.35 MPa (± 7 86) for Group III. Regarding the ARI (adhesive reminiscent index), Group I and III had a fracture at the interface bracket/adhesive, while Group II showed the interface fracture in the enamel/adhesive.

Influence of Ortho Primer Morelli adhesion booster on orthodontic brackets shear bond strength

OBJECTIVE: This work aimed at assessing the bond strength (AS), the site of the flaw and the relation between them and Ortho Primer Morelli® (OPM) adhesion optimizer. METHODS: Sixty test specimens, made out of bovine permanent lower incisors, were divided into three groups: TXT Primer (control), in which a conventional adhesive system was applied (primer and paste); OPM, in which TXT primer was replaced by OPM; and TXT without Primer, in which only TXT paste was used. A shear force was applied at a speed of 0,5 mm/min. Failure site was assessed by the Remaining Adhesion Index (RAI). RESULTS: Kruskal-Wallis demonstrated that OPM (8.54 ± 1.86 MPa) presented a statistically higher AS (p < 0.05) IF compared to TXT Primer (6.83 ± 2.05 MPa). There was no statistically significant difference (p > 0.05) between TXT with or without Primer (6.42 ± 2.12 MPa). Regarding the RAI, the K test demonstrated that TXT Primer and OPM (prevailing scores 2 and 3) showed higher values (p < 0.05) IF compared to TXT without Primer (prevailing scores 0 and 1). Spearman demonstrated that there was no correlation between AS and RAI (p > 0.05). CONCLUSION: OPM increases AS and presents the same bond failure location if compared to a conventional adhesive system; the use of the TXT adhesive system paste only was shown to have the same AS if compared to conventional systems, except it does not allow to predict the adhesive failure site; there is no correlation between AS and bond failure location, regardless of the use of any adhesion optimizer.

Research on adhesive strength of different composites resin core and fiber posts / 实用口腔医学杂志

Objective:To study the adhesive strength between fiber posts and four different composite resin core materials.Methods:Four resin core materials (Multicore Heavy Body、LuxaCore、 LIGHT-CORE and Z100) were placed around the fiber posts. The adhesive strengths of the samples were tested by the universal electrical testing machine. The interface between fiber post and resin core was observed by SEM. Results:Different resin core materials exhibited significant different influences on adhesive strengths(P<0.05). The LuxaCore reached the maximum of (314.31±15.36) N and the Z100 was the minimum of (267.39±10.54) N.Conclusion:Resin core material exhibits a significant influence on adhesive strength. The dual-curing composite core material with low viscosity has the highest bond strength in all groups.

Evaluation of 4 dentin adhesives in vivo / 实用口腔医学杂志

Objetives: To evaluate the microtensile bond strengths o f four dentin adhesives (Single Bond, Bond-1, Prime&Bond NT and One-Step) i n vivo.Methods: Before extraction the superficial occlu sal dentin of 19 molars (because of severe periodontitis) in 17 volunteers was exposed by diamond bur of a high-speed hand-piece copious air-water spray under local anesthesia, the crown was bonded with one of the above adhesives a ccording to the manufacturers' instructions. The teeth were then extracted and kept in normal saline for 24 h under 37 ℃,sectioned to obtain two or three bar -shaped specimens, which were then shaped to an hour-glass form. The specimens were stressed until rupture of the bond. The mean bond strength of the adhesive s was measured and compared using student test. Rusults: M ean microtensile bond strength (MPa) of Single Bond,Bond-1,One-Step and Prime & Bond NT to the tooth surface was 26.18?3.67,30.08?3.15,29.91?3.51,29.70?3 .03 respectively (P

Scleral Attachment of Extraocular Muscle using a Stitch Combined with Tissue Adhesive in Rabbits

In experimental sutureless muscle surgery with tissue adhesives, current materials have inadequate adhesive strength in the early postoperative period.We performed a modified muscle surgery using a stitch combined with Tisseel (Immuno AG, Vienna, Austria)in order to evaluate the adhesive strengh as a replacement for conventional suture techniques in muscle surgery. Thirty eyes of 15 rabbits were used.We recessed superior and inferior rectus muscles by three different methods, Tisseel only, a stitch with Tisseel, and a stitch only, in each group of 5 rabbits.Conjunctival incisions were closed with the remaining Tisseel in 7 rabbits, and with vicryl in 8 rabbits. Tensile strength of the scleral reattachment site was measured and conjunctival closure was examined by slit-lamp biomicroscopy, at intervals of 1 hour, 12 hours, 1 day, 3 days and 5 days. The strengths of a stitch with Tisseel at each interval were 83.25 +/-1 4 .0 6 gm, 137.50 +/-22.88 gm, 169.75 +/-23.95 gm, 151.50 +/-41.99 gm, and 265.50 +/- 25.01 gm, respectively.The strengths of Tisseel alone were 61.50 +/-2 0 .2 1 gm, 101.50 +/-11.00 gm, 113.25 +/-28.69 gm, 120.50 +/-18.36 gm, and 222.75 +/- 57.67 gm.They were 52.25 +/-24.85 gm, 89.50 +/-16.05 gm, 130.75 +/-21.98 gm, 1 5 3 .7 5 +/-30.35 gm, and 261.50 +/-60.47 gm at each interval in rabbits with a stitch alone. These results showed that the tensile strengths of a stitch with Tisseel were stronger than those of the other two methods up to 1 day after surgery.Even at postoperative 12 hours, the strength was more than 130 gm which was strong enough for scleral attachment.All of the conjunctival closures with Tisseel were well maintained without any complication up to 5 days, the same as vicryl sutures. In conclusion, this study revealed that muscle attachment to the sclera by a stitch with Tisseel was simpler and safer than classical sutures with reduced risk of sclera perforation.Its strong tensile strength at early postoperative days suggests that the method might be considered as an alternative method to classical reattachment using suture material and also that conjunctiva could be closed with Tisseel remnant.

The oxide adherence test for pure titanium / 实用口腔医学杂志

0.05),while there was significant difference among other groups(P

Microtensile bonding strength between root canal wall and root canal rehabilitation materials / 实用口腔医学杂志

Objective:To test the microtensile bonding strength between root canal wall and Bis-Core, and that between root canal wall and Chemil Superior glass-ionomer.Methods:10 human maxillary incisors extracted within one week were kept for another one week after root canal treatment and removeal of the crowns,each root was splited into two parts along with the long axis by Isomet saw, the bonding interface on one third of upside of root dentin smear layer was made with Diamond bur at a high-speed. Then Bis-Core and Chemil Superior glass-ionomer were put on root canal inner surface of each half part of the root respectively, samples with the size of 1.00 mm?1.00 mm were prepared by Isomet saw. Two samples in which bonding interface was perpendiculur to load were selected and fixed in Microtensile testing machine for bonding strength test. Results:Microtensile bonding strength(MPa) between Bis-Core and root canal inner wall and that between root canal inner wall and Chemil Superior glass-ionomer was 20.65?1.72 and 12.89?1.63 respectively(P

Comparative study on adhesive strength of three colloid materials and their complexes as bone adhesives / 中国海洋药物

sodium carboxymethylcellulose.Their complexes also obtained the stongest adhesive strength in their saturated water solutions,but their adhesive strength was between their component colloid materials.The complexes integrate the characteristics of the three colloid materials and would provide valuable complex materials for the study of bone adhesives.