Journal of Restorative Dentistry最新文献_第8页

Push-out bond strength of fiber posts luted using different adhesive resin cements 不同粘结树脂水泥对纤维桩的推出粘结强度的影响

Journal of Restorative Dentistry Pub Date : 2013-09-01 DOI: 10.4103/2321-4619.118879

Suat Özcan, Serkan Aktuna, Yelda Nayir, Darendeliler Yaman, O. Bala

{"title":"Push-out bond strength of fiber posts luted using different adhesive resin cements","authors":"Suat Özcan, Serkan Aktuna, Yelda Nayir, Darendeliler Yaman, O. Bala","doi":"10.4103/2321-4619.118879","DOIUrl":"https://doi.org/10.4103/2321-4619.118879","url":null,"abstract":"Background: Post retention to root canal dentin is an important problem that directly affects the success of the restoration. The aim of this study was to evaluate the influence of different adhesive resin cements on the bond strength of fiber posts to root canal dentin. Materials and Methods: A total of 44 human mandibular premolars were selected for the study. Posts were luted using four different resin cements: Group 1; RelyX Unicem, Group 2; Panavia F 2.0, Group 3; Kerr Maxcem and Group 4; Clearfil self-adhesive (SA) cement. After the cementation, three segments per tooth were obtained starting 1 mm below the cementoenamel junction including, cervical, middle and apical. The roots were sectioned into 6 slices of 1 mm thickness each. Push-out test was performed using the universal testing machine at a cross-head speed of 0.5 mm/min. Statistical analysis was performed using one-way ANOVA and Tukey′s tests (α = 0.05). Results: Mean push-out bond strengths were: RelyX Unicem (22.4 ± 2.46), Panavia F 2.0 (19.8 ± 2.01), Kerr Maxcem (18.1 ± 2.45), Clearfil SA Cement (23.8 ± 2.49). Clearfil SA Cement showed significantly higher bonds strength than the other tested materials except RelyX Unicem (P < 0.05). Conclusion: SA 10-methacryloyloxydecyl dihydrogen phosphate-based resin cements yielded higher bond strength values than did self-etch or SA resin cements for fiber posts in push out tests. Bond strength values were higher in coronal than in the middle and apical root sections.","PeriodicalId":17076,"journal":{"name":"Journal of Restorative Dentistry","volume":"184 1","pages":"75 - 80"},"PeriodicalIF":0.0,"publicationDate":"2013-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80542496","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}

引用次数: 6

Helping our patients overcome their fear of the dentist 帮助我们的病人克服对牙医的恐惧

Journal of Restorative Dentistry Pub Date : 2013-09-01 DOI: 10.4103/2321-4619.118867

J. Bahcall

引用次数: 0

Effect of endodontic irrigants on microtensile bond strength of a self-etching adhesive system 根管冲洗剂对自蚀刻胶粘剂微拉伸粘结强度的影响

Journal of Restorative Dentistry Pub Date : 2013-09-01 DOI: 10.4103/2321-4619.118909

A. Şengun, H. Oruçoḡlu, Hayriye �lker

{"title":"Effect of endodontic irrigants on microtensile bond strength of a self-etching adhesive system","authors":"A. Şengun, H. Oruçoḡlu, Hayriye �lker","doi":"10.4103/2321-4619.118909","DOIUrl":"https://doi.org/10.4103/2321-4619.118909","url":null,"abstract":"Aim: The aim of this in vitro study was to evaluate the effect of two different irrigation solutions, alone or in combination, with different application times on the dentin bond strength of a self-etching adhesive. Materials and Methods: Twenty-eight extracted non-carious human third molars were randomly distributed into seven groups according to the irrigant. The crowns of the molars were sectioned vertically through bucco-lingual direction. Solutions of 5% sodium-hypochlorite (NaOCl), 3% hydrogen-peroxide (H 2 O 2 ), and a combination of NaOCl and H 2 O 2 were applied to the dentin surface for various lengths of time. The adhesive system (Clearfil SE Bond; Kuraray, Japan) was applied according to the manufacturers′ directions and then the dentin surfaces were built up with a hybrid composite resin (Clearfil AP-X Kuraray, Japan). Specimens were sectioned into 15 sticks; each of them had a 0.65 mm 2 bonding area. Microtensile bond strength was determined (MPa), and the results were statistically analyzed using one-way ANOVA and Tukey′s HSD test. Results: Irrigation with NaOCl alone showed similar micro-tensile bond strength values with the control group (P > 0.05). In comparison to control group, irrigation with H 2 O 2 alone for 5 min and 30 min and the irrigation with H 2 O 2 /NaOCl combination each for 15 min decreased the microtensile bond strength. Conclusion: The use of H 2 O 2 significantly reduced the bond strengths of the self-etching adhesive when applied alone or in combination with NaOCl for a long time.","PeriodicalId":17076,"journal":{"name":"Journal of Restorative Dentistry","volume":"1 1","pages":"86 - 89"},"PeriodicalIF":0.0,"publicationDate":"2013-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82927472","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}

引用次数: 0

Microtensile bond strength of three adhesive systems to different dentin tissues 三种胶粘剂体系与不同牙本质组织的微拉伸结合强度

Journal of Restorative Dentistry Pub Date : 2013-09-01 DOI: 10.4103/2321-4619.118900

B. Bulucu, C. Yeşilyurt, Davut Çelik, G. Eyuboglu, C. Alp, H. Aydemir

{"title":"Microtensile bond strength of three adhesive systems to different dentin tissues","authors":"B. Bulucu, C. Yeşilyurt, Davut Çelik, G. Eyuboglu, C. Alp, H. Aydemir","doi":"10.4103/2321-4619.118900","DOIUrl":"https://doi.org/10.4103/2321-4619.118900","url":null,"abstract":"Purpose: The aim of this in vitro study was to determine the micro-tensile bond strengths (mTBS) of three adhesive systems (Prime&Bond NT, Clearfil SE Bond, G Bond) to four different dentin structures; bovine dentin and unerupted, sound, caries affected human dentins. Materials and Methods: Flat bovine molar, unerupted, sound and caries affected human molar dentin structures were obtained at the occlusal surfaces of the extracted teeth. Final surface grindings were performed using 600-grit Silicon carbide paper. Three adhesive systems (Prime&Bond NT, Clearfil SE Bond, G Bond) were used to bond composite resin (P60, 3M ESPE) to the prepared dentin surfaces. After 24 h distilled-water storage, the bonded specimens were cross-sectioned (0.8 ± 0.2 mm 2 ) and subjected to a (μTBS) test. One-way analysis of variance multiple comparison test were used to statistically analyze the mean bond strength data α =0.05. Results: There was statistically significant difference in mTBS among the dentin types (P < 0.0005). Mean bond strength to sound human and bovine dentin was significantly higher than to caries-affected dentin and dentin of unerupted human teeth (P < 0.05). Statistically similar bond strength was obtained with Prime&Bond NT and Clearfil SE Bond while G-Bond showed the lowest bond strengths. Conclusion: The type of dentin structure has an important effect on the mTBS values of adhesive systems.","PeriodicalId":17076,"journal":{"name":"Journal of Restorative Dentistry","volume":"40 1","pages":"81 - 85"},"PeriodicalIF":0.0,"publicationDate":"2013-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85475133","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}

引用次数: 1

Effect of curvature angle and rotational speed on fracture of various Ni-Ti rotary files used in extracted molars 不同Ni-Ti旋转锉在拔除磨牙时弯曲角度和转速对其断裂的影响

Journal of Restorative Dentistry Pub Date : 2013-05-01 DOI: 10.4103/2321-4619.116033

Pardeep Khurana, K. K. Khurana

{"title":"Effect of curvature angle and rotational speed on fracture of various Ni-Ti rotary files used in extracted molars","authors":"Pardeep Khurana, K. K. Khurana","doi":"10.4103/2321-4619.116033","DOIUrl":"https://doi.org/10.4103/2321-4619.116033","url":null,"abstract":"Objectives: The objective of this study was to evaluate the effect of rotational speed and angle of curvature in curved root canals on the fracture of different nickel-titanium rotary instruments that is Profiles, ProTaper, and K 3 files. Materials and Methods: Freshly extracted 180 human maxillary and mandibular molars were selected and divided into two groups of 90. Each group was then divided into three sub groups A, B, and C according to angle of curvature, Group I < 30° and Group II > 30°, which was measured by Schneider′s method. Instrumentation was performed using the profile, ProTaper, and K3 (Company and in Literature name of Rotary file is K3) rotary instrument at 3 rotational speeds of 150, 250, and 350 rpm (10 molars at each rotational speed). Results: There were total of 32 instrument fractured out of 120 files. In a multivariable analysis, it was demonstrated that the rotational speed of 350 rpm fractured than those used at 150 rpm (odd′s ratio [OR]: 3.6, 95% confidence interval [CI]: 1.3-10.5). An increase in the angle of curvature of the canal did not significantly increase the likelihood of fracture (OR: 1.9, 95% CI: 0.8-4.2). No significant differences were found between various designs of files used. Conclusion: Instrument fracture was associated with rotational speed and the angle of curvature.","PeriodicalId":17076,"journal":{"name":"Journal of Restorative Dentistry","volume":"39 1","pages":"49 - 54"},"PeriodicalIF":0.0,"publicationDate":"2013-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90345659","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}

引用次数: 5

A comparison of the levels of microleakage of five adhesive systems 五种胶粘剂体系微泄漏水平的比较

Journal of Restorative Dentistry Pub Date : 2013-05-01 DOI: 10.4103/2321-4619.116038

M. Dalli, F. Atakul, E. Bahşi, B. Ince, C. Şahbaz, H. Çolak, E. Ercan

{"title":"A comparison of the levels of microleakage of five adhesive systems","authors":"M. Dalli, F. Atakul, E. Bahşi, B. Ince, C. Şahbaz, H. Çolak, E. Ercan","doi":"10.4103/2321-4619.116038","DOIUrl":"https://doi.org/10.4103/2321-4619.116038","url":null,"abstract":"Objective: The aim of this study was a comparative assessment of in vitro microleakage of five different new generation self-etching adhesive systems. Materials and Methods: One hundred recently extracted fresh caries-free human permanent molars were used. Teeth were randomly assigned to one of five groups (n = 20). Clearfil S 3 Bond (Group I), Xeno V (Group II), G Bond (guanine-cytosine) (Group III), Optibond All in One (Group IV) and iBond (Group V) were applied, then polymerized with light emitting diode and restored with a nanofill composite. Teeth were coated twice with acid resistant varnish and immersed in 0.5% methylene blue. Specimens were cut bucco-palatinally/lingually, with microleakage scores evaluated on a scale from 0 to 4 under a stereomicroscope and then analyzed under a scanning electron microscope. Results: The differences among the gingival and occlusal microleakage scores of the groups were statistically significant (P < 0.05) (P = 0.043, P = 0.005). Occlusal microleakage scores of Clearfil S 3 Bond and Optibond All in One were considerably lower than those of the other three groups. While the highest microleakage was observed with iBond, there was no statistical difference between the Xeno V and G Bond groups (P > 0.05). The highest gingival microleakage scores were in the iBond group; though, statistically there was no significant difference among the other groups (P > 0.05). Conclusion: The occlusal and gingival microleakage scores of self-etching adhesive systems in this study were satisfactory except for one group (Group V-iBond).","PeriodicalId":17076,"journal":{"name":"Journal of Restorative Dentistry","volume":"67 1","pages":"66 - 71"},"PeriodicalIF":0.0,"publicationDate":"2013-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89292194","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}

引用次数: 3

Evaluation and comparison of the effect of enamel preparation designs on fracture resistance of micro-filled and nano-filled composite resin: An in vitro study 牙釉质制备设计对微填充与纳米填充复合树脂抗断裂性能影响的评价与比较

Journal of Restorative Dentistry Pub Date : 2013-05-01 DOI: 10.4103/2321-4619.116029

Jyothi Shashidhar, C. Shashidhar

{"title":"Evaluation and comparison of the effect of enamel preparation designs on fracture resistance of micro-filled and nano-filled composite resin: An in vitro study","authors":"Jyothi Shashidhar, C. Shashidhar","doi":"10.4103/2321-4619.116029","DOIUrl":"https://doi.org/10.4103/2321-4619.116029","url":null,"abstract":"Background and Objectives: The main objective of this study was to compare and evaluate the effect of enamel preparation designs; bevel and stair step chamfer, on fracture resistance of composite resins (micro-filled and nano-filled) using incremental technique. Materials and Methods: The sample group consisted of 60 non-carious maxillary permanent central incisors. They were divided into four groups of 15 teeth each. According to the group, the teeth were prepared and restored with corresponding design and material. The teeth were subjected to compression bending test under instron testing machine then were examined under stereomicroscope. The results were subjected to statistical analysis. Results: Mean peak failure load (Newton) of among experimental groups was observed in the order; Group I (Bevel with micro-filled material) was 255.6 ± 65.0 N and Group II (bevel with nano-filled material) l was 282.1 ± 67.7 N. Group III (Stair-step chamfer with micro-filled material) was 249.8 ± 78.0 N. and Group IV (Stair-step chamfer with nano-filled material) was 283.3 ± 52.0 N. Results of the analysis of variance revealed there was no significant difference in the mean peak failure load values of the four different groups. Failure mode evaluation revealed, majority of the failures occurred as cohesive and mixed type for all the experimental groups. Adhesive type failure was observed maximum (47%) in the bevel group. Stair-step chamfer preparation showed the greatest potential for application, but also involved sacrificing less amount of tooth structure adjacent to fractured edge. Conclusion: This study concludes that both the preparations, bevel as well as stair-step chamfer are equally good to resist fracture when restored either with micro-filled or nano-filled composite resins.","PeriodicalId":17076,"journal":{"name":"Journal of Restorative Dentistry","volume":"60 1","pages":"43 - 48"},"PeriodicalIF":0.0,"publicationDate":"2013-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87003095","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}

引用次数: 1

Effect of salivary contamination on micro-tensile bond strength of self-etch adhesives systems after bonding procedure 唾液污染对自蚀刻胶粘剂粘接后微拉伸强度的影响

Journal of Restorative Dentistry Pub Date : 2013-05-01 DOI: 10.4103/2321-4619.116036

M. Yalçın, Neslihan Simsek, A. Keleş, F. Ahmetoğlu, A. Dündar, I. Umar

{"title":"Effect of salivary contamination on micro-tensile bond strength of self-etch adhesives systems after bonding procedure","authors":"M. Yalçın, Neslihan Simsek, A. Keleş, F. Ahmetoğlu, A. Dündar, I. Umar","doi":"10.4103/2321-4619.116036","DOIUrl":"https://doi.org/10.4103/2321-4619.116036","url":null,"abstract":"Aims: The purpose of this study was to evaluate the effect of saliva contamination on the micro-tensile bond strength (μTBS) of two self-etching (SE) adhesive systems (Clearfil SE Bond, Clearfil S3 Bond). Materials and Methods: Flat occlusal dentin surfaces were created on 12 extracted human third molar teeth. The two bonding systems and resin composite (Spectrum® TPH® 3) were bonded to the dentin under six surface conditions: Group 1: Tooth samples were randomly divided into three equal subgroups. Clearfil SE 1: This was a control group in which dentin was not contaminated with the saliva (primer/bonding/composite). Clearfil SE 2: Contaminated once (primer/bonding (cured)/saliva/rinsing/drying/primer/bonding/composite). Clearfil SE 3: The samples were contaminated 2 times (primer/bonding (cured)/saliva/rinsing/drying/primer/bonding (cured)/saliva/rinsing/drying/primer/bonding/composite). Group 2: The procedures for Group 2 were similar to Group 1 but did not contain a primer stage. Tooth samples were randomly divided into three equal subgroups (Clearfil S3 1, 2, and 3). After 24 h, the teeth were prepared for microtensile bond testing and tensile bond strength was measured (1 mm/min). The data were calculated as megapascal (MPa) and analyzed using the one-way ANOVA and Tukey′s post-hoc test (P < 0.05). Results: The μTBS of the Clearfil S3 3 subgroup was statistically higher than that of the Clearfil S3 2 subgroup and Clearfil S3 1 subgroup. There were no significant statistical differences in the μTBSs between the Clearfil S3 2 subgroup and the control subgroup. There were no statistical differences in μTBSs among the Clearfil SE subgroups. Conclusion: μTBS is not affected adversely from one or two saliva contamination after the bonding procedure.","PeriodicalId":17076,"journal":{"name":"Journal of Restorative Dentistry","volume":"20 1","pages":"55 - 59"},"PeriodicalIF":0.0,"publicationDate":"2013-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73394540","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}

引用次数: 5

A comparative evaluation of different restorative technique using polyethylene fibre in reinforcing the root-filled teeth: An in vitro study" 聚乙烯纤维不同修复技术在根补牙体修复中的比较研究

Journal of Restorative Dentistry Pub Date : 2013-05-01 DOI: 10.4103/2321-4619.116037

Shailja Singh, A. Chandra, A. Tikku, Promila Verma

{"title":"A comparative evaluation of different restorative technique using polyethylene fibre in reinforcing the root-filled teeth: An in vitro study\"","authors":"Shailja Singh, A. Chandra, A. Tikku, Promila Verma","doi":"10.4103/2321-4619.116037","DOIUrl":"https://doi.org/10.4103/2321-4619.116037","url":null,"abstract":"Aim: The purpose of any restorative material is not only to restore the decayed of defective tooth and provide an effective seal between the restoration and the tooth, but also to strengthen it. Endodontic treatment removes the vital contents of the canal, leaving the tooth pulpless and resulting in teeth with calcified tissues that contain significantly less moisture than that of vital teeth. The restorative material should be as much as strong, which support the endodontically treated tooth against the occlusal forces. Thus, the present study was undertaken to evaluate different restorative technique using the polyethylene fiber in reinforcing the root-filled teeth. Materials and Methods: 50 freshly extracted maxillary premolar human teeth were taken. All teeth were divided into 2 groups, the control and experimental group), sub group I (had unrestored mesial occlusal distal [MOD] cavities), sub group II (where MOD cavities were filled with composite), sub group III (where polyethylene fiber placed occlusally on the composite restoration) and sub group IV (had polyethylene fiber inserted under the composite the restorations). The specimens were then placed into a universal testing machine. A vertical compressive force was applied at a crosshead speed of 0.5 mm/min and the force necessary to fracture. Results: Fracture resistance was significantly highest in sub group III as compared to sub group IV, sub group II and sub group I. Conclusion: This study concluded that use of polyethylene fiber inserted over or under the restoration significantly increased the fracture strength of the root canal treated teeth and when the fiber was placed on the occlusal surface of the restoration from a buccal to lingual direction significantly higher fracture resistance was observed.","PeriodicalId":17076,"journal":{"name":"Journal of Restorative Dentistry","volume":"83 1","pages":"60 - 65"},"PeriodicalIF":0.0,"publicationDate":"2013-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77299350","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}

引用次数: 3

Enamel microabrasion associated with dental bleaching to treat sequelae of amelogenesis imperfect 牙釉质微磨损联合牙齿漂白治疗无釉发育不全的后遗症

Journal of Restorative Dentistry Pub Date : 2013-01-01 DOI: 10.4103/2321-4619.111232

J. Martos, D. D. da Silveira, L. Silveira, O. Ramos

引用次数: 1