Journal of Restorative Dentistry最新文献

Effect of thermal cycling and microhardness on roughness of composite restorative materials 热循环和显微硬度对复合修复材料粗糙度的影响

Journal of Restorative Dentistry Pub Date : 2016-09-01 DOI: 10.4103/2321-4619.188233

E. Yilmaz, R. Sadeler

{"title":"Effect of thermal cycling and microhardness on roughness of composite restorative materials","authors":"E. Yilmaz, R. Sadeler","doi":"10.4103/2321-4619.188233","DOIUrl":"https://doi.org/10.4103/2321-4619.188233","url":null,"abstract":"Objective: This study is aimed to investigate the effect of thermal cycling and microhardness on surface roughness of four different composite restorative materials. Materials and Methods: In this study Nonofilled(Ivoclar Heliomolar, 3M ESPE Filtek Supreme) and microhybrid(3M ESPE Filtek Z250, Kuraray Clearfil AP-X) composites were used. The surface roughness (Ra) was initially measured in a profilometer using a cut off 0,25mm, after 6000 and 12000 thermal cycles. In addition to microhardness of composites Vicker hardness (HV) were determined. Data were subjected to Anova and Tukey′s test.(α=0,05). Results: One-way Anova indicated significant differences in Vicker hardness(HV) between four composite resins. Significant lowest HV was found for Heliomolar (HV=22); mean values were considerably lower than three composite resins. In addition to overall 6000 thermal cycles increased the surface of roughness values for all materials and there was a trend in all groups to decrease the roughness after 12000 thermal cycles. Conclusion: The material composition including type of organic matrix could be more relevant to roughness maintenance over time than the general behavior of composites based on particle fillers. Moreover, this study revealed that correlations between microhardness (HV) and surface of roughness were poor.","PeriodicalId":17076,"journal":{"name":"Journal of Restorative Dentistry","volume":"4 1","pages":"93 - 96"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86978011","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: 22

Evaluation of fear of injections and its association with avoidance of dental treatment 对注射恐惧的评估及其与回避牙科治疗的关系

Journal of Restorative Dentistry Pub Date : 2016-09-01 DOI: 10.4103/2321-4619.188228

T. Siddiqui, A. Wali, Habiba Abdullah, F. N. Khan, Rabiya Tanvir, M. R. Siddiqui

{"title":"Evaluation of fear of injections and its association with avoidance of dental treatment","authors":"T. Siddiqui, A. Wali, Habiba Abdullah, F. N. Khan, Rabiya Tanvir, M. R. Siddiqui","doi":"10.4103/2321-4619.188228","DOIUrl":"https://doi.org/10.4103/2321-4619.188228","url":null,"abstract":"Aim: The aim of this study was to assess the intensity of needle phobia and to evaluate the different dimensions of fear of dental injections to help provide better care to the patients. Materials and Methods: A simple random technique was used and 250 adult patients above 18 years of age were selected who attended outpatients Department of Operative Dentistry, Baqai Dental College. A modified form of the structured questionnaire used by Milgrom et al. was generated. The items were scored based on the 5-point traditional Likert scale ranging from strongly disagree to strongly agree. Data were analyzed for descriptive analysis (mean, standard deviation) using the software SPSS version 19. Association of gender with fear of dental injections was evaluated using Chi-squared test (P = 0.05). Results: There was a statistically significant difference in fear of dental injections among male and female subjects. The most fearful aspect of dental injection was found to be fear of cross-infection. Fears associated with local anesthesia, for example, inadequate numbness, adverse reaction, and trouble in breathing or swallowing were the least common fears reported by the patients. Conclusion: This study highlighted that understanding the nature and extent of patients′ fear of injection is important for dentists to expand their knowledge of the association of fear of dental needles for the impact on the treatment outcome and reluctance of the patients intervene.","PeriodicalId":17076,"journal":{"name":"Journal of Restorative Dentistry","volume":"143 1","pages":"81 - 85"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76221574","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

Restorative management of grossly mutilated molar teeth using endocrown: A novel concept 使用内冠修复严重残缺的磨牙:一个新概念

Journal of Restorative Dentistry Pub Date : 2016-09-01 DOI: 10.4103/2321-4619.188235

S. Chaudhary, Ashok K. Rathod, P. Yadav, S. Talwar, M. Verma

{"title":"Restorative management of grossly mutilated molar teeth using endocrown: A novel concept","authors":"S. Chaudhary, Ashok K. Rathod, P. Yadav, S. Talwar, M. Verma","doi":"10.4103/2321-4619.188235","DOIUrl":"https://doi.org/10.4103/2321-4619.188235","url":null,"abstract":"The endocrown is a restorative option for endodontically treated teeth. It consists of a circular butt-joint margin and a central retention cavity inside the pulp chamber and lacks intraradicular anchorage. Endocrowns are formed from a monoblock containing the coronal portion integrated into the apical projection that fills the pulp chamber space and possibly the root canal ingresses. This article describes the rationale and clinical guidelines for the placement of endocrowns. In the cases presented, extensively damaged teeth were superseded with endocrowns composed of pressed ceramics (Empress 2, Ivoclar), following endodontic and periodontal therapy. The substructure of this technique is to utilize the surface available in the pulpal chamber to assume the stability and retention of the restoration through adhesive procedures. By eliminating the utilization of a post and filling core, the number of adhesive bond interfaces is reduced, thus making the restoration less susceptible to the adverse effects of degradation of the hybrid layer. In these clinical cases, the 24 months survival of the endocrown restoration may be considered prosperous.","PeriodicalId":17076,"journal":{"name":"Journal of Restorative Dentistry","volume":"23 1","pages":"97 - 100"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74578885","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

Evaluation of disinfection of gutta-percha cones and their surface changes using different chemical solutions 不同化学溶液对杜仲胶锥的消毒效果及其表面变化的评价

Journal of Restorative Dentistry Pub Date : 2016-09-01 DOI: 10.4103/2321-4619.188226

Kanika Yadav, I. D. de Ataide, Anuja Ganoo, M. Fernandes, Rajan Lambor

{"title":"Evaluation of disinfection of gutta-percha cones and their surface changes using different chemical solutions","authors":"Kanika Yadav, I. D. de Ataide, Anuja Ganoo, M. Fernandes, Rajan Lambor","doi":"10.4103/2321-4619.188226","DOIUrl":"https://doi.org/10.4103/2321-4619.188226","url":null,"abstract":"Context: Disinfection of obturating materials is mandatory for the successful root canal therapy. In literature, various disinfectants have been used to sterilize gutta-percha including sodium hypochlorite (NaOCl). Effectiveness of peracetic acid over NaOCl is documented in literature, but no study to date has shown the effect of peracetic acid disinfection on gutta-percha surface. Aim: This study aims to evaluate and compare the efficacy of 3% NaOCl, 1% peracetic acid, 0.5% octenisept in disinfecting gutta-percha cones and to analyze surface alterations of gutta-percha cones after chemical disinfection. Materials and Methods: One hundred and twenty gutta-percha cones were immersed in bacterial suspensions of Staphylococcus aureus and Escherichia coli for 5 min. Cones were then immersed in 3% NaOCl, 1% peracetic acid, 0.5% octenisept for 1 and 5 min. After disinfection, cones were incubated in Mueller Hinton Broth at 37°C for 7 days. Samples were observed at 24 h interval and those showing turbidity were subcultured. For morphologic evaluation, cones were immersed in disinfecting solutions for 1 and 5 min, dried on a paper pad for 10 min and analyzed under scanning electron microscope. Data was analyzed using Pearson Chi-square test. Results: One percent of peracetic acid was found to be most effective disinfectant. Surface alterations were found in all the groups. Conclusion: The outcome of this study confirmed the efficacy of 1% peracetic acid in the disinfection of gutta-percha cones. Topographic changes caused by peracetic acid should be evaluated further to determine its effect on gutta-percha properties and obturation seal.","PeriodicalId":17076,"journal":{"name":"Journal of Restorative Dentistry","volume":"1 1","pages":"76 - 80"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81986708","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: 2

Importance of coronal seal: Preventing coronal leakage in endodontics 冠状动脉密封的重要性:预防牙髓学中冠状动脉渗漏

Journal of Restorative Dentistry Pub Date : 2016-09-01 DOI: 10.4103/2321-4619.188224

Lalitagauri P. Mandke

引用次数: 21

Bonding effectiveness of contemporary composite cements to dentin after 6-month water storage 当代复合水泥与牙本质在水储存6个月后的粘结效果

Journal of Restorative Dentistry Pub Date : 2016-09-01 DOI: 10.4103/2321-4619.188231

M. Sarr, B. Faye, Fatou Lèye-Benoist, K. Bane, A. Aidara, B. Touré

{"title":"Bonding effectiveness of contemporary composite cements to dentin after 6-month water storage","authors":"M. Sarr, B. Faye, Fatou Lèye-Benoist, K. Bane, A. Aidara, B. Touré","doi":"10.4103/2321-4619.188231","DOIUrl":"https://doi.org/10.4103/2321-4619.188231","url":null,"abstract":"Purpose: To evaluate the bonding effectiveness to dentin of eight dual-cure composite cements after 6-month water storage. Materials and Methods: This study is a follow-up of a recent study that investigated the 1-week bonding effectiveness of feldspathic ceramic blocks luted to dentin using the same composite cements and experimental protocol. The microtensile bond strength (μTBS) of different composite cements, including two etch-and-rinse cements (Calibra, Dentsply; Variolink II, Ivoclar-Vivadent), two self-etch cements (Panavia F2.0, Kuraray; Clearfil Esthetic Cement, Kuraray), and four self-adhesive cements (Unicem, 3M ESPE; Maxcem, Kerr; Monocem, Shofu; G-Cem, GC), was measured using a standardized μTBS protocol after 6-month water storage. As control, a two-step self-etch adhesive (Clearfil SE, Kuraray) combined with a microhybrid restorative composite (Clearfil AP-X, Kuraray) was used. Twenty-seven human third molars were used with specific preparation, and after 6-month water storage, microspecimens were prepared and subjected to a μTBS test. Results: The mean μTBS varied from 0 to 26.1 MPa, the latter being measured for the control adhesive composite combination. All specimens prepared using the self-adhesive composite cements Maxcem and Monocem failed during specimen processing. Most specimens failed at the dentin-cement interface, except the self-etch composite cement Panavia F2.0 that failed in 53% of the cases at the cement-ceramic interface and the control of which all specimens failed in the resin part of the microspecimens. Conclusion: The largely varying bonding effectiveness recorded for the different composite cements highlights the need for material specifications. Such specifications should also include a bond durability test as the specimens in the present study that were subjected to 6-month water storage. To lute ceramic restorations that allow light transmission to a sufficient degree, a conventional light-curable adhesive and composite should be considered.","PeriodicalId":17076,"journal":{"name":"Journal of Restorative Dentistry","volume":"32 1","pages":"86 - 92"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78364776","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

The effect of orthodontic tooth movement on endodontically treated teeth 正畸牙齿移动对牙髓治疗后牙齿的影响

Journal of Restorative Dentistry Pub Date : 2016-05-01 DOI: 10.4103/2321-4619.181001

H. Aydın, K. Er

引用次数: 9

Stabilizing the resin dentin bond 稳定树脂牙本质结合

Journal of Restorative Dentistry Pub Date : 2016-05-01 DOI: 10.4103/2321-4619.180996

N. Manuja

引用次数: 0

Smear layer removal and ultramorphological changes of root canal dentin induced by erbium, chromium: Yttrium-scandium-gallium-garnet laser 铒、铬、钇、钪、镓、石榴石激光对根管牙本质涂抹层去除及超微改变的影响

Journal of Restorative Dentistry Pub Date : 2016-05-01 DOI: 10.4103/2321-4619.180998

Dunia Alhadi, N. Al-Rawi, Farah M. Jaber, Manaf Agah, Musab H Saeed

{"title":"Smear layer removal and ultramorphological changes of root canal dentin induced by erbium, chromium: Yttrium-scandium-gallium-garnet laser","authors":"Dunia Alhadi, N. Al-Rawi, Farah M. Jaber, Manaf Agah, Musab H Saeed","doi":"10.4103/2321-4619.180998","DOIUrl":"https://doi.org/10.4103/2321-4619.180998","url":null,"abstract":"Aim: Using SEM & EDX analysis to evaluate: 1. The ability of Er;Cr;YSSG laser irradiation to the remove of smear layer from the root canal walls compared to the conventional EDTA/NaOCl irrigation technique 2. The effect of Er;Cr;YSSG laser irradiation on ultra morphologic characteristics and on the inorganic contents of root canal dentine. Materials and Methods: 18 single rooted freshly extracted human premolars) were chemomechanically prepared using protaper rotary nickel titanium (Ni-Ti) instruments (Dentsply maillefer) up to size 40/60 (F4) between each instruments 2 ml of 2.5% NaOcl were used. Samples were divided into two groups (n=8): Group A: 5 ml of 17% EDTA for 1 minute. Group B: Irradiation with Er;Cr;YSSG laser. Two teeth were used as a positive control (presence of smear layer). Teeth sections were evaluated by using the SEM and the EDX analysis. Results: It has been found that more than 70% of the examined samples in EDTA group showed significant removal of the smear layer in coronal, middle and apical third of the examined teeth. In Er;Cr;YSGG group, the coronal portion showed complete removal of the smear layer but with destruction of the inner wall of the dentin. In apical portion more than 87.5% of the samples showed the persistence of the smear layer in that region after laser treatment. When evaluating the degree of erosion, the highest degree was noted in the samples treated with Er,Cr;YSGG. Laser irradiation has less effect on the mineral contents of the root canal walls. Conclusions: The findings of the present study suggest that the use of Er;Cr;YSGG laser irradiation alone is significantly less effective in removing the apical third smear layer than the golden standard irrigation with 2.5% NaOCl and 17% EDTA.","PeriodicalId":17076,"journal":{"name":"Journal of Restorative Dentistry","volume":"126 1","pages":"48 - 52"},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87706677","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: 2

Adhesion to pulp chamber dentin: Effect of different endodontic irrigants 牙本质黏附:不同根管冲洗剂对牙本质的影响

Journal of Restorative Dentistry Pub Date : 2016-05-01 DOI: 10.4103/2321-4619.180994

R. Nagpal, Payal Singh, Shipra Singh, N. Manuja, Rahul Gupta, Pallavi Sharma

{"title":"Adhesion to pulp chamber dentin: Effect of different endodontic irrigants","authors":"R. Nagpal, Payal Singh, Shipra Singh, N. Manuja, Rahul Gupta, Pallavi Sharma","doi":"10.4103/2321-4619.180994","DOIUrl":"https://doi.org/10.4103/2321-4619.180994","url":null,"abstract":"Aim: To evaluate the effect of different endodontic irrigation regimens on the sealing ability of resin composite restorations placed within the pulp chamber using contemporary simplified adhesives. Materials and Methods: Seventy-five extracted human molars were divided into six groups. After de-roofing the pulp chamber and extirpating the pulp, pulp chambers were bonded with either G-Bond after irrigation with saline (Group 1); ethylenediaminetetraacetic acid (EDTA) and sodium hypochlorite (NaOCl) (Group 2), and NaOCl + QMix (Group 3) or bonded with OptiBond adhesive after irrigation with saline (Group 4), EDTA and NaOCl (Group 5), and NaOCl + QMix (Group 6). All the samples were restored with composite. Ten samples per group were assessed for dye penetration. Fifteen samples were assessed under scanning electron microscope. Data were statistically analyzed using Mann–Whitney and Kruskal–Wallis tests at a significance level of P < 0.05. Results: Both EDTA + NaOCl or NaOCl + QMix pretreatment of pulp chamber dentin significantly reduced microleakage scores in adhesive OptiBond, but did not affect the microleakage of G-Bond. Conclusions: EDTA + NaOCl or NaOCl + QMix irrigation of the pulp chamber was not deleterious to the bonding of any of the adhesives tested.","PeriodicalId":17076,"journal":{"name":"Journal of Restorative Dentistry","volume":"55 1","pages":"53 - 58"},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78008685","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