{"title":"Editorial: On our way towards self-adhesive restorative materials?","authors":"B. Van Meerbeek, R. Frankenberger","doi":"10.3290/j.jad.a43044","DOIUrl":"https://doi.org/10.3290/j.jad.a43044","url":null,"abstract":"","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"45 1","pages":"295-296"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74930598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yi-Fang Lo, A. Crispin, A. Kessler, R. Hickel, J. Kühnisch
PURPOSE This meta-analysis investigated the influence of different acid etching times on the retention rate of pit-and-fissure sealants based on clinical trials with a minimum duration of two years. MATERIALS AND METHODS A literature search was carried out in electronic databases along with hand searching to identify clinical trials that evaluated pit-and-fissure sealants in permanent molars. From 1280 identified abstracts, 195 studies were selected for full-text analysis, and 28 studies with 36 test groups were included in this meta-analysis. Test groups with etching times of 15 (n = 3), 20 (n = 2), 30 (n = 10), 40 (n = 1) and 60 s (n = 20) were found. Incidence rates of pit-and-fissure sealant losses were modelled using negative binomial regression. RESULTS The regression analysis did not reveal a significant influence of etching time on the survival of pit-and-fissure sealants based on the identified and included clinical trials. CONCLUSIONS Due to the limited number of clinical data for 15 and 20 s, conclusions regarding very short acid etching times were not possible. On the basis of regression analysis, a minimum of 30-s acid etching might be sufficient prior to fissure sealing.
{"title":"What is an Appropriate Etching Time For Sealant Application on Permanent Molars? Results from a Meta-Analysis.","authors":"Yi-Fang Lo, A. Crispin, A. Kessler, R. Hickel, J. Kühnisch","doi":"10.3290/j.jad.a43181","DOIUrl":"https://doi.org/10.3290/j.jad.a43181","url":null,"abstract":"PURPOSE This meta-analysis investigated the influence of different acid etching times on the retention rate of pit-and-fissure sealants based on clinical trials with a minimum duration of two years. MATERIALS AND METHODS A literature search was carried out in electronic databases along with hand searching to identify clinical trials that evaluated pit-and-fissure sealants in permanent molars. From 1280 identified abstracts, 195 studies were selected for full-text analysis, and 28 studies with 36 test groups were included in this meta-analysis. Test groups with etching times of 15 (n = 3), 20 (n = 2), 30 (n = 10), 40 (n = 1) and 60 s (n = 20) were found. Incidence rates of pit-and-fissure sealant losses were modelled using negative binomial regression. RESULTS The regression analysis did not reveal a significant influence of etching time on the survival of pit-and-fissure sealants based on the identified and included clinical trials. CONCLUSIONS Due to the limited number of clinical data for 15 and 20 s, conclusions regarding very short acid etching times were not possible. On the basis of regression analysis, a minimum of 30-s acid etching might be sufficient prior to fissure sealing.","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"31 1","pages":"487-495"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85124328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Abstracts of the Third Biennial Meeting of the International Academy of Adhesive Dentistry.","authors":"","doi":"10.3290/j.jad.a43326","DOIUrl":"https://doi.org/10.3290/j.jad.a43326","url":null,"abstract":"","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"11 3 1","pages":"445-476"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78342516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. K. Kuper, A. Hollanders, Eline A M Dekkers, T. Maske, M. Huysmans, M. Cenci
PURPOSE This in vitro study investigated whether aging different restorative materials influences secondary caries development using a short-term in vitro biofilm model, hypothesizing that the antibacterial adhesive employed may lose its effect over time. MATERIALS AND METHODS Sixty enamel-dentin blocks were divided into 6 groups with n = 10 per group. The groups were restored with three different restorative materials, of which each sample contained an artificial gap: composite with conventional adhesive (CCA; negative control), composite with an antibacterial adhesive (CAA), and amalgam (A; positive control). Half of the groups were prepared fresh and half of the groups were submitted to an aging protocol consisting of water storage, thermocycling, storage in human saliva, and storage in 0.9% saline solution. All specimens were subjected to an intermittent 1% sucrose biofilm model for 20 days to create artificial caries lesions. Lesion progression in the enamel and dentin next to the different materials was measured as lesion depth (LD) and mineral loss (ML), using transverse wavelength independent microradiography (T-WIM). Regression analysis was used to evaluate the effect of aging on LD and ML per restorative material, corrected for gap size. RESULTS In the amalgam group, aging led to shallower lesions and less mineral loss. Fresh amalgam samples showed an average lesion depth of 156.65 ± 39.18 µm at wall dentin locations. Aged amalgam samples had an average lesion depth of 73.42 ± 73.50 µm. Fresh CAA samples showed lower average surface mineral loss values (9104 ± 2631 µm•vol%) than did fresh CCA samples (13166 ± 4769 µm•vol%). After aging, this effect was absent, and the average mineral loss in the CAA group was 13382 ± 5586 µm•vol%, while in the CCA group it was 15518 ± 9283 µm•vol%. CONCLUSION Aging can influence secondary caries development either positively or negatively depending on the kind of restorative material. Antibacterial adhesives may lose their effectiveness over time.
{"title":"Aging Reduces the Anticaries Effect of Antibacterial Adhesive - An In Vitro Biofilm Study.","authors":"N. K. Kuper, A. Hollanders, Eline A M Dekkers, T. Maske, M. Huysmans, M. Cenci","doi":"10.3290/j.jad.a42999","DOIUrl":"https://doi.org/10.3290/j.jad.a42999","url":null,"abstract":"PURPOSE This in vitro study investigated whether aging different restorative materials influences secondary caries development using a short-term in vitro biofilm model, hypothesizing that the antibacterial adhesive employed may lose its effect over time. MATERIALS AND METHODS Sixty enamel-dentin blocks were divided into 6 groups with n = 10 per group. The groups were restored with three different restorative materials, of which each sample contained an artificial gap: composite with conventional adhesive (CCA; negative control), composite with an antibacterial adhesive (CAA), and amalgam (A; positive control). Half of the groups were prepared fresh and half of the groups were submitted to an aging protocol consisting of water storage, thermocycling, storage in human saliva, and storage in 0.9% saline solution. All specimens were subjected to an intermittent 1% sucrose biofilm model for 20 days to create artificial caries lesions. Lesion progression in the enamel and dentin next to the different materials was measured as lesion depth (LD) and mineral loss (ML), using transverse wavelength independent microradiography (T-WIM). Regression analysis was used to evaluate the effect of aging on LD and ML per restorative material, corrected for gap size. RESULTS In the amalgam group, aging led to shallower lesions and less mineral loss. Fresh amalgam samples showed an average lesion depth of 156.65 ± 39.18 µm at wall dentin locations. Aged amalgam samples had an average lesion depth of 73.42 ± 73.50 µm. Fresh CAA samples showed lower average surface mineral loss values (9104 ± 2631 µm•vol%) than did fresh CCA samples (13166 ± 4769 µm•vol%). After aging, this effect was absent, and the average mineral loss in the CAA group was 13382 ± 5586 µm•vol%, while in the CCA group it was 15518 ± 9283 µm•vol%. CONCLUSION Aging can influence secondary caries development either positively or negatively depending on the kind of restorative material. Antibacterial adhesives may lose their effectiveness over time.","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"31 1","pages":"365-372"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90415385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yang Cao, Yanqing Guo, Lei Chen, Jing-Jing Han, H. Tong, Baohui Zhang, Yu Zhang
PURPOSE To investigate the effects of grit blasting, acidic or alkaline/heat treatments, and metal primer application on the shear bond strength (SBS) of resin cement to machined commercially pure titanium (CP-Ti). MATERIALS AND METHODS Titanium plates were machined and received one of the following treatments: grit-blasting (GB), or grit-blasting followed by either acidic treatment (GB/AC) or alkaline/heat treatment (GB/AH). The specimens were randomly divided into 4 groups and treated with Rely X Ceramic Primer (RCP), Z Prime Plus (ZPP), and Alloy Primer (ALP), or without primer as the control. The pairs of titanium plates were cemented together with the Rely X Unicem cement. SBS was measured before and after thermocycling between 5°C and 55°C for 5000 cycles. RESULTS SEM observation showed that honeycomb-shaped pores formed on the surface of machined CP-Ti after GB/AC treatment, whereas a uniform net-like pattern formed after GB/AH treatment. In descending order, the surface roughness was GB, GB/AC, and GB/AH. The GB/AH group showed the highest SBS among all the treatments. As for primers, ALP group showed the highest SBS, while the RCP group showed the lowest. GB followed by ALP presented the highest SBS. CONCLUSION A fine, uniform network structure was formed on the surface of CP-Ti following GB/AH treatment, providing an effective micromechanical interlocking mechanism for resin bonding. At the same time, after AH treatment, the -OH formed on the surface of the machined CP-Ti triggered a chemical reaction with the acid monomers in the resin adhesives, creating a chemical bond. As a result, GB/AH treatment significantly improved the bond strength relative to GB/AC treatment. In addition, ALP treatment facilitated the formation of hydrogen bonds, which further improved the chemical bond strength. Finally, the combination of the effects mentioned above resulted in the most robust bond between machined CP-Ti and the resin adhesives.
目的研究喷砂、酸性或碱性/热处理以及金属底漆对树脂水泥与工业纯钛(CP-Ti)剪切结合强度(SBS)的影响。材料与方法对钛板进行机械加工，采用喷砂(GB)或喷砂后进行酸性处理(GB/AC)或碱性/热处理(GB/AH)。随机分为4组，分别用Rely X陶瓷引物(RCP)、Z Prime Plus (ZPP)和Alloy引物(ALP)处理，或不加引物作为对照。用Rely X Unicem水泥将钛板对粘合在一起。在5°C至55°C之间进行5000次热循环前后测量SBS。结果sem观察表明，经GB/AC处理的CP-Ti表面形成蜂窝状气孔，而经GB/AH处理的CP-Ti表面形成均匀的网状气孔。表面粗糙度由大到小依次为GB、GB/AC、GB/AH。在所有处理中，GB/AH组SBS最高。引物中，ALP组SBS最高，RCP组最低。SBS最高的是GB，其次是ALP。结论GB/AH处理后的CP-Ti表面形成了精细均匀的网状结构，为树脂键合提供了有效的微机械联锁机制。同时，经过AH处理后，加工后的CP-Ti表面形成的-OH与树脂胶粘剂中的酸性单体发生化学反应，形成化学键。结果表明，相对于GB/AC处理，GB/AH处理显著提高了粘结强度。此外，ALP处理促进了氢键的形成，进一步提高了化学键的强度。最后，上述效应的结合导致了加工CP-Ti与树脂粘合剂之间最坚固的结合。
{"title":"Effects of Different Surface Treatments on Bond Strength of Resin Cement to Machined Pure Titanium.","authors":"Yang Cao, Yanqing Guo, Lei Chen, Jing-Jing Han, H. Tong, Baohui Zhang, Yu Zhang","doi":"10.3290/j.jad.a43182","DOIUrl":"https://doi.org/10.3290/j.jad.a43182","url":null,"abstract":"PURPOSE To investigate the effects of grit blasting, acidic or alkaline/heat treatments, and metal primer application on the shear bond strength (SBS) of resin cement to machined commercially pure titanium (CP-Ti). MATERIALS AND METHODS Titanium plates were machined and received one of the following treatments: grit-blasting (GB), or grit-blasting followed by either acidic treatment (GB/AC) or alkaline/heat treatment (GB/AH). The specimens were randomly divided into 4 groups and treated with Rely X Ceramic Primer (RCP), Z Prime Plus (ZPP), and Alloy Primer (ALP), or without primer as the control. The pairs of titanium plates were cemented together with the Rely X Unicem cement. SBS was measured before and after thermocycling between 5°C and 55°C for 5000 cycles. RESULTS SEM observation showed that honeycomb-shaped pores formed on the surface of machined CP-Ti after GB/AC treatment, whereas a uniform net-like pattern formed after GB/AH treatment. In descending order, the surface roughness was GB, GB/AC, and GB/AH. The GB/AH group showed the highest SBS among all the treatments. As for primers, ALP group showed the highest SBS, while the RCP group showed the lowest. GB followed by ALP presented the highest SBS. CONCLUSION A fine, uniform network structure was formed on the surface of CP-Ti following GB/AH treatment, providing an effective micromechanical interlocking mechanism for resin bonding. At the same time, after AH treatment, the -OH formed on the surface of the machined CP-Ti triggered a chemical reaction with the acid monomers in the resin adhesives, creating a chemical bond. As a result, GB/AH treatment significantly improved the bond strength relative to GB/AC treatment. In addition, ALP treatment facilitated the formation of hydrogen bonds, which further improved the chemical bond strength. Finally, the combination of the effects mentioned above resulted in the most robust bond between machined CP-Ti and the resin adhesives.","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"1 1","pages":"401-411"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83067194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Cardenas, Angela Sisley Quintero-Calderon, F. Siqueira, V. S. Campos, M. Wendlinger, Camilo Andres Pulido-Mora, María José Masson-Palacios, Martha Lucia Sarmiento-Delgado, A. Loguércio
PURPOSE To evaluate the effect of different application modes of a recently introduced self-etching ceramic primer on the microshear bond strength (μSBS) and ceramic surface-etching pattern of two glass-ceramic surfaces. MATERIALS AND METHODS Twenty-two CAD/CAM blocks of lithium disilicate (LD) and feldspathic glass ceramic (VTR) were each cut into 4 rectangular sections (n = 88 for ceramic surface). The LD and VTR specimens were divided into one control group (hydrofluoric acid + silane coupling agent [HF+SII]), and 10 experimental groups using Monobond Etch and Prime (MEP) applied for a combination of scrubbing times (5, 10, 20, 40, and 60 s) and reaction times (20 or 40 s). After each treatment, Tygon matrices (n = 8) were filled with a resin cement and light cured for each ceramic specimen. The specimens were stored in water at 37°C for 24 h and subjected to the μSBS test. The failure pattern and μSBS were statistically evaluated (α = 0.05). In addition, the ceramic surface etching pattern was analyzed using scanning electron microscopy. RESULTS For the LD groups, the application of MEP 60/40 resulted in a higher mean μSBS compared to HF+SI (p < 0.05). Groups 5/40, 10/40, and 20/40 resulted in mean μSBS similar to that obtained by HF+SI (p > 0.05). For VTR, no significant difference was observed among the groups (p = 0.32). Compared with MEP, HF better promoted the dissolution of glass matrix for both ceramics. However, prolonged MEP scrubbing or reaction caused significant dissolution of the glass matrix for both evaluated ceramics. CONCLUSION Active and prolonged application of MEP may be a viable alternative to HF+SI for increasing the bond strength to LD.
{"title":"Do Different Application Modes Improve the Bonding Performance of Self-etching Ceramic Primer to Lithium Disilicate and Feldspathic Ceramics?","authors":"A. Cardenas, Angela Sisley Quintero-Calderon, F. Siqueira, V. S. Campos, M. Wendlinger, Camilo Andres Pulido-Mora, María José Masson-Palacios, Martha Lucia Sarmiento-Delgado, A. Loguércio","doi":"10.3290/j.jad.a42929","DOIUrl":"https://doi.org/10.3290/j.jad.a42929","url":null,"abstract":"PURPOSE To evaluate the effect of different application modes of a recently introduced self-etching ceramic primer on the microshear bond strength (μSBS) and ceramic surface-etching pattern of two glass-ceramic surfaces. MATERIALS AND METHODS Twenty-two CAD/CAM blocks of lithium disilicate (LD) and feldspathic glass ceramic (VTR) were each cut into 4 rectangular sections (n = 88 for ceramic surface). The LD and VTR specimens were divided into one control group (hydrofluoric acid + silane coupling agent [HF+SII]), and 10 experimental groups using Monobond Etch and Prime (MEP) applied for a combination of scrubbing times (5, 10, 20, 40, and 60 s) and reaction times (20 or 40 s). After each treatment, Tygon matrices (n = 8) were filled with a resin cement and light cured for each ceramic specimen. The specimens were stored in water at 37°C for 24 h and subjected to the μSBS test. The failure pattern and μSBS were statistically evaluated (α = 0.05). In addition, the ceramic surface etching pattern was analyzed using scanning electron microscopy. RESULTS For the LD groups, the application of MEP 60/40 resulted in a higher mean μSBS compared to HF+SI (p < 0.05). Groups 5/40, 10/40, and 20/40 resulted in mean μSBS similar to that obtained by HF+SI (p > 0.05). For VTR, no significant difference was observed among the groups (p = 0.32). Compared with MEP, HF better promoted the dissolution of glass matrix for both ceramics. However, prolonged MEP scrubbing or reaction caused significant dissolution of the glass matrix for both evaluated ceramics. CONCLUSION Active and prolonged application of MEP may be a viable alternative to HF+SI for increasing the bond strength to LD.","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"5 1","pages":"319-327"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88565839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"International Academy for Adhesive Dentistry (IAAD).","authors":"L. Breschi, M. Blatz, J. Roulet","doi":"10.3290/j.jad.a40659","DOIUrl":"https://doi.org/10.3290/j.jad.a40659","url":null,"abstract":"","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"175 1","pages":"173"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76127871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"International Academy for Adhesive Dentistry (IAAD).","authors":"M. Blatz","doi":"10.3290/j.jad.a38269","DOIUrl":"https://doi.org/10.3290/j.jad.a38269","url":null,"abstract":"","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"178 1","pages":"185"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79986149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. V. Forgerini, J. F. Ribeiro, R. Rocha, F. Soares, T. Lenzi
PURPOSE To assess the immediate and six-month microshear bond strength (µSBS) of a universal adhesive applied using different etching strategies on sound and eroded dentin. MATERIALS AND METHODS Eighty bovine incisors were polished to obtain flat buccal dentin. Forty teeth were submitted to a pH-cycling model to simulate artificial erosion (3x/day cola drink for 7 days). Teeth from both dentin conditions (sound and eroded) were randomly assigned to four groups according to the adhesive and etching approach: a universal adhesive in self-etch and etch-and-rinse modes (Scotchbond Universal Adhesive), and as controls a two-step etch-and-rinse adhesive (Adper Single Bond Plus), and a two-step self-etch adhesive (Clearfil SE Bond). Four composite restorations (Z250) were built up on each dentin surface, using the area delimitation technique. Half of the specimens were evaluated in the µSBS test after 24 h of water storage, and the other half were evaluated six months later. Data (MPa) were analyzed with three-way repeated measures ANOVA and Tukey's post-hoc tests (α = 0.05). RESULTS The µSBS values of all adhesives significantly decreased after six months of aging (p = 0.01). Lower µSBS values were obtained in eroded dentin (p = 0.04). The universal adhesive showed similar µSBS to the self-etch adhesive used as control, irrespective of the etching strategy. However, Scotchbond Universal Adhesive applied in self-etch mode performed better than the control etch-and-rinse adhesive (p = 0.02). CONCLUSION The universal adhesive does not provide the same bonding efficacy on eroded dentin as on sound dentin, and its performance does not depend on the etching mode.
目的研究一种通用胶粘剂不同蚀刻策略对健康牙本质和侵蚀牙本质的即时和六个月微剪切粘接强度(µSBS)。材料与方法对80只牛切牙进行磨光处理，获得平整的牙本质。将40颗牙齿放入ph循环模型中模拟人工侵蚀(每天喝3次可乐，持续7 天)。根据粘接和蚀刻方法，两种牙质状态(健全和侵蚀)的牙齿随机分为四组:一种是自蚀刻和蚀刻-冲洗模式的通用粘合剂(Scotchbond universal adhesive)，另一种是两步蚀刻-冲洗粘合剂(Adper Single Bond Plus)，另一种是两步自蚀刻粘合剂(Clearfil SE Bond)。采用面积划分技术，在每个牙本质表面建立4个复合修复体(Z250)。一半的标本在24 h的水储存后进行µSBS测试，另一半在6个月后进行评估。数据(MPa)采用三向重复测量方差分析和Tukey事后检验(α = 0.05)。结果6个月后，各胶粘剂的µSBS值均显著降低(p = 0.01)。侵蚀牙本质的µSBS值较低(p = 0.04)。无论蚀刻策略如何，通用胶粘剂表现出与自蚀刻胶粘剂相似的µSBS。然而，在自蚀刻模式下应用的Scotchbond通用粘合剂比对照蚀刻-冲洗粘合剂表现更好(p = 0.02)。结论通用胶粘剂对侵蚀牙本质的粘接效果不如对健全牙本质的粘接效果，其粘接效果与腐蚀方式无关。
{"title":"Role of Etching Mode on Bonding Longevity of a Universal Adhesive to Eroded Dentin.","authors":"T. V. Forgerini, J. F. Ribeiro, R. Rocha, F. Soares, T. Lenzi","doi":"10.3290/j.jad.a37723","DOIUrl":"https://doi.org/10.3290/j.jad.a37723","url":null,"abstract":"PURPOSE To assess the immediate and six-month microshear bond strength (µSBS) of a universal adhesive applied using different etching strategies on sound and eroded dentin. MATERIALS AND METHODS Eighty bovine incisors were polished to obtain flat buccal dentin. Forty teeth were submitted to a pH-cycling model to simulate artificial erosion (3x/day cola drink for 7 days). Teeth from both dentin conditions (sound and eroded) were randomly assigned to four groups according to the adhesive and etching approach: a universal adhesive in self-etch and etch-and-rinse modes (Scotchbond Universal Adhesive), and as controls a two-step etch-and-rinse adhesive (Adper Single Bond Plus), and a two-step self-etch adhesive (Clearfil SE Bond). Four composite restorations (Z250) were built up on each dentin surface, using the area delimitation technique. Half of the specimens were evaluated in the µSBS test after 24 h of water storage, and the other half were evaluated six months later. Data (MPa) were analyzed with three-way repeated measures ANOVA and Tukey's post-hoc tests (α = 0.05). RESULTS The µSBS values of all adhesives significantly decreased after six months of aging (p = 0.01). Lower µSBS values were obtained in eroded dentin (p = 0.04). The universal adhesive showed similar µSBS to the self-etch adhesive used as control, irrespective of the etching strategy. However, Scotchbond Universal Adhesive applied in self-etch mode performed better than the control etch-and-rinse adhesive (p = 0.02). CONCLUSION The universal adhesive does not provide the same bonding efficacy on eroded dentin as on sound dentin, and its performance does not depend on the etching mode.","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"11 1","pages":"69-75"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84269908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kento Sato, K. Hosaka, Masahiro Takahashi, M. Ikeda, F. Tian, W. Komada, M. Nakajima, R. Foxton, Y. Nishitani, D. Pashley, J. Tagami
PURPOSE To evaluate (1) the initial and long-term microtensile bond strengths of two-step self-etch adhesives with different degrees of conversion (DC); (2) the elastic modulus of the respective adhesive resins; (3) the water sorption of the respective adhesive resins. MATERIALS AND METHODS Two two-step self-etch adhesives, Clearfil SE Bond (CSE) and Clearfil SE Bond 2 (CSE2) were used in this study. The DC was determined using ATR/FT-IR with a time-based spectrum analysis. Midcoronal flat dentin surfaces of 24 human molars were prepared with 600-grit SiC paper for microtensile bond strength (µTBS) testing. CSE and CSE2 were applied to the dentin surfaces according to the manufacturer's instructions, followed by composite buildups. The µTBS was measured after water storage for 24 h, 6 months, and 1 year. The elastic modulus (before and after 1 month of water immersion) was determined by the three-point flexural bending test and water sorption values by the water sorption test. RESULTS CSE2 showed significantly higher DC than CSE. The µTBS of CSE2 was significantly higher than that of CSE in all water storage periods. One-year water storage decreased the µTBS of CSE; however, it did not decrease that of CSE2. Regarding the polymerized adhesive resins, the elastic modulus of CSE2 was significantly higher than that of CSE before and after water immersion (p < 0.001), and the water sorption of CSE was higher than that of CSE2. CONCLUSIONS The higher DC of adhesive resins of two-step self-etch adhesives resists water aging and improves the initial bond strengths and durability of the resin-dentin bond.
目的评价(1)不同转化度的两步自蚀刻胶粘剂(DC)的初始和长期微拉伸粘结强度;(2)所粘接树脂的弹性模量;(3)各自胶粘剂树脂的吸水性。材料与方法采用Clearfil SE Bond (CSE)和Clearfil SE Bond 2 (CSE2)两种两步自蚀刻胶粘剂。使用ATR/FT-IR和基于时间的光谱分析来确定DC。采用600粒度SiC纸制备24颗人磨牙中冠牙本质平面，进行微拉伸粘结强度(µTBS)测试。根据制造商的说明将CSE和CSE2应用于牙本质表面，然后进行复合堆积。在水储存24小时、6个月和1年后测量µTBS。弹性模量(浸水1个月前和1个月后)通过三点弯曲试验确定，吸水值通过吸水试验确定。结果scse2的DC明显高于CSE。在所有蓄水期，CSE2的µTBS均显著高于CSE。1年的水储存降低了CSE的µTBS;但对CSE2的影响不明显。对于聚合胶粘剂树脂，CSE2的弹性模量显著高于CSE2浸泡前后的弹性模量(p < 0.001)，且CSE2的吸水性高于CSE2。结论两步自蚀刻胶粘剂具有较高的粘接树脂DC，抗水老化，提高了树脂-牙本质的初始粘接强度和耐久性。
{"title":"Dentin Bonding Durability of Two-step Self-etch Adhesives with Improved of Degree of Conversion of Adhesive Resins.","authors":"Kento Sato, K. Hosaka, Masahiro Takahashi, M. Ikeda, F. Tian, W. Komada, M. Nakajima, R. Foxton, Y. Nishitani, D. Pashley, J. Tagami","doi":"10.3290/j.jad.a37726","DOIUrl":"https://doi.org/10.3290/j.jad.a37726","url":null,"abstract":"PURPOSE To evaluate (1) the initial and long-term microtensile bond strengths of two-step self-etch adhesives with different degrees of conversion (DC); (2) the elastic modulus of the respective adhesive resins; (3) the water sorption of the respective adhesive resins. MATERIALS AND METHODS Two two-step self-etch adhesives, Clearfil SE Bond (CSE) and Clearfil SE Bond 2 (CSE2) were used in this study. The DC was determined using ATR/FT-IR with a time-based spectrum analysis. Midcoronal flat dentin surfaces of 24 human molars were prepared with 600-grit SiC paper for microtensile bond strength (µTBS) testing. CSE and CSE2 were applied to the dentin surfaces according to the manufacturer's instructions, followed by composite buildups. The µTBS was measured after water storage for 24 h, 6 months, and 1 year. The elastic modulus (before and after 1 month of water immersion) was determined by the three-point flexural bending test and water sorption values by the water sorption test. RESULTS CSE2 showed significantly higher DC than CSE. The µTBS of CSE2 was significantly higher than that of CSE in all water storage periods. One-year water storage decreased the µTBS of CSE; however, it did not decrease that of CSE2. Regarding the polymerized adhesive resins, the elastic modulus of CSE2 was significantly higher than that of CSE before and after water immersion (p < 0.001), and the water sorption of CSE was higher than that of CSE2. CONCLUSIONS The higher DC of adhesive resins of two-step self-etch adhesives resists water aging and improves the initial bond strengths and durability of the resin-dentin bond.","PeriodicalId":94234,"journal":{"name":"The journal of adhesive dentistry","volume":"22 1","pages":"31-37"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79537631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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