Journal of Isfahan Dental School最新文献

{"title":"The Effect of Bleach Liquid and Household Cleaner on Surface Hardness and Roughness of Acrylic Base of Orthodontic Appliances","authors":"Saeed Noorollahian, Farinaz Shirban, Vahid Mojiri","doi":"10.18502/ijds.v17i2.6876","DOIUrl":"https://doi.org/10.18502/ijds.v17i2.6876","url":null,"abstract":"Introduction: The daily use of orthodontic removable plates can interfere with the self-cleansing function of the mouth. Although various techniques have been proposed for cleaning removable orthodontic appliances, there is no consensus on the use of a safe method that preserves the physical properties of the appliance. This study aimed to investigate the effect of using hydrochloric acid (10%, for removal of mineral deposits) and sodium hypochlorite (5.25%, to remove organic matter and discolorations) on surface hardness and roughness of self-cure orthodontic acrylic resins. \u0000Materials & Methods: This cross-sectional laboratory study was conducted in the fall of 2017 at Isfahan University of Medical science and Isfahan University of Technology. In this study two orthodontic acrylic resins (Orthocryl® and Acropars®) were used. Eighty samples (12×10×3 mm) from each one were fabricated and divided into four groups (n = 20). Group 1: 15 minutes immersion in household cleaner liquid (Hydrochloric acid, 10%) followed by15 minutes immersion in household bleach liquid (Sodium Hypochlorite, 5.25%). In group 2, immersions were repeated just like group two times and in group 3, were done three times. Group 4 was as control and had no immersion. The surface hardness and roughness of samples were measured. Data were analyzed with Two Way ANOVA and the significance level was set at 0.05. \u0000Results: The number of immersion procedures did not significantly affect the surface hardness (p value = 0.958) and surface roughness (p value = 0.657) in the different study groups. There was no significant difference in the surface hardness between the two acrylic resin brands (p value = 0.077); however, Acropars acrylic resin samples exhibited significantly higher surface roughness compared to the Orthocryl acrylic resin samples(p value < 0.001). \u0000Conclusion: 15 minutes of immersion in 10% HCl, followed by 15 minutes of immersion in 5.25% NaOCl and repetition of the procedure three times did not significantly affect the surface hardness and roughness of self-cured acrylic resins.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128154561","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":"The Effect of Platelet Rich Plasma on Tissue Healing after Mandibular Third Molar Surgery","authors":"N. Karimi, Behnam Khorrami, Reza Nezhadnasrollah, Yamin Haghani","doi":"10.18502/ijds.v17i2.6880","DOIUrl":"https://doi.org/10.18502/ijds.v17i2.6880","url":null,"abstract":"Introduction: This study aimed, effect of platelet-rich plasma (PRP) on soft tissue healing after mandibular third molar surgery. \u0000Materials & Methods: In this semi-blinded clinical trial study,30 selected patients requiring surgical extraction of soft tissue impacted mandibular third molar participated from cases referred to the Department of Surgery, Faculty of Dentistry, Isfahan Azad University 2017.Patients divided into both test and control groups. PRP was placed in the extracted socket of the test group, whereas the control group had no PRP. Arzhangian standard kit utilized for preparation of PRP. The outcome variables in this study were pain, swelling, inter incisal mouth opening, wound dehiscence, dry socket, bleeding, and tissue color. The collected data analyzed using statistical tests followed independent T-test, Mann-Whitney, and fisher (p value < 0.05). \u0000Results: The mean postoperative pain score (Visual Analog Scale) lowered for the test group after several wound dehiscence on the third and seventh days after surgery which was statistically significant (p value < 0.001). Although the mean bleeding time on the third day after surgery decreased in the test group, this difference was not statistically significant (p value = 0.59). There were no statistically significant between both groups for The dry socket incidence on the seventh day and the mean of inter incisal mouth opening in the third and seventh days after surgery as well. \u0000Conclusion: The usage of topical PRP has beneficial advantages on soft tissue healing after mandibular third molar surgery. Unlike the control group, The PRP group provided reduced pain and better soft tissue healing.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129122897","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":"Comparison of Melissa with Acyclovir on Recurrent Labial Herpes (A systematic review)","authors":"Zahra Golestannejad, F. Khozeimeh, N. Mojtahedi, F. Abbasi, Zahra Seyedmoalemi","doi":"10.18502/ijds.v17i2.6886","DOIUrl":"https://doi.org/10.18502/ijds.v17i2.6886","url":null,"abstract":"Introduction: Given the indefinite effect of antinucleoside drugs on the improvement of Recurrent Herpes Labialis, plant medicines such as Melissa officinalis have been proposed as a treatment of choice for these lesions. Clinical studies have reported different and conflicting results for the effect of Melissa on herpes. Hence, using a systematic approach, this study aimed to evaluate the clinical studies on the effect of Melissa on recurrent herpes labialis compared to acyclovir or placebo. \u0000Description: The English and Persian controlled clinical trials on the effect of Melissa on recurrent herpes labialis compared to acyclovir or placebo were investigated. Persian databases, including SID, Civilica, Medical Library, and Iranian Medical Sciences Theses and English databases content ProQuest, PubMed Google Scholar, were searched from 1990 to 2018 using a pre-designed strategy. Quality assessment of studies performed using the CONSORT-2010 checklist. The exclusion criteria of this study resemble details of both Persian and English searches/ articles, and eliminating one of them, invitro studies, and studies lacking an acceptable score by the CONSORT checklist. Out of 955 reviewed and evaluated articles from the 2010 consort checklist, 3 articles scored above 7.2 Articles were in English and 1 Article was in Persian. The search results were evaluated by the quality assessment of the recruited studies’ results. Compared to acyclovir and placebo, Melissa was more effective in reducing the lesion pain and size but had no significant effect on decreasing inflammation and erythema. The administration of the drugs did not provide any side effects. \u0000Conclusion: Melissa was more effective than Acyclovir and placebo in reducing the lesion pain and size but did not significantly decrease inflammation and erythema.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128817050","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":"Comparison of Direct and Indirect Scanners in Digital Impression Systems: A Narrative Review","authors":"Mahsa Abbasi, B. Ebadian, Negin Aminianpour","doi":"10.18502/ijds.v17i2.6885","DOIUrl":"https://doi.org/10.18502/ijds.v17i2.6885","url":null,"abstract":"Introduction: Digital impression tools are an alternative to old impression materials and have developed significantly in recent years. These systems generally include two types of scanners: direct and indirect scanners. This article aimed to review and compare these two types of scanners. \u0000Description: Data were collected by reviewing a total of forty articles on dimensional accuracy, a combination of scans, and internal and marginal gaps for comparison of direct and indirect scanners. These articles were retrieved from PubMed and Scopus and published between 2010 and 2020 using the following keywords: intraoral scanner, lab scanner, marginal gap, internal gap, and accuracy rate. \u0000Results: Direct scanners had a lower amount of marginal and internal gaps, while indirect scanners had a lower deviation in more prepared teeth in the half and full arch due to the ability of stitching scans. Regarding the dimensional accuracy, the results of studies were inconsistent, but clinical studies pointed to the superiority of indirect scanners. The type of scanner suggested being selected depending on conditions such as the size of area, time, convenience of procedure, etc. The clinical results of both types of scanners were clinically acceptable.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122077653","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":"Evaluation of Dimensional Changes of Graft Material in Sinuses Reinforced by Lateral Window Lift Sinus","authors":"Yadollah Soleimani Shayesteh, M. Panjnoosh, A. Shamshiri, Amin Khalilnejad, M. Bayani, Mohammad Mehdi Panjalizadeh","doi":"10.18502/ijds.v17i2.6883","DOIUrl":"https://doi.org/10.18502/ijds.v17i2.6883","url":null,"abstract":"Introduction: Maxillary sinus augmentation and placement of dental implants is a well-established technique for functional and esthetic rehabilitation of partially or completely edentulous patients with severe maxillary atrophy. This study aimed to investigate dimensional changes of xenogarfts + allografts used for maxillary sinus augmentation in three directions and aspects of height, length and thickness by six months after sinus augmentation. \u0000Materials & Methods: A total of 12 patients who underwent maxillary sinus augmentation by the approach of lateral window open sinus lift in Tehran university of medical sciences, and by application of xenografts + allografts were radiologically followed up and sequences of CBCT (Cone beam computed tomography) images taken immediately after graft placement and six months later. Data analyzed with Paired T-test in the 0.05 level of significance. \u0000Results: The calculated mean resorption in aspects of height, length and thickness of grafted materials after six months was 2.99, 2, 37 and 1, 72 mm. with SD of 2.64-1.41 and 1.95. \u0000Conclusion: In compared results of our study and other similar articles, it considered that directional changes of xenografts + allografts by six months after graft placement is mild to moderate, but it provides a reasonable density of new bone formation before implant placement.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"101 3 Pt 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130311923","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":"Evaluation of the Effect of Zataria Multiflora Essential Oil and Fluconazole Solution on the Accumulation of Candida Albicans and Streptococcus Mutans on Orthodontic Removable Plate","authors":"Maryam Baharlooei, M. Rafiei, Nasim Esnaashari, A. Rajaei","doi":"10.18502/ijds.v17i2.6874","DOIUrl":"https://doi.org/10.18502/ijds.v17i2.6874","url":null,"abstract":"Introduction: Since orthodontic removable appliances might be infected with fungi and bacteria, they need to be cleaned using natural disinfectants and chemicals. This study aimed to compare the clinical impact of thyme essence and Fluconazole solution on the amount of Candida albicans colonies and Streptococcus mutans accumulated on the removable appliances in orthodontic patients. \u0000Materials & Methods: In this descriptive-analytical study, 21 patients were selected who used the wear Hawley’s retainer for 24-hours. Patients were divided into three groups of seven. One group first washed the plaque with soap and water and then spray thyme essence all over it at a 5-centimeter distance (4 times on each side). In the other group, as before, the plaque was washed and from the same distance as before, the fluconazole solution (10 mg/ml) was sprayed on all surfaces 4 times. In the control group, the retainer was washed every night only with soap and water. After one month, the retainers were delivered form patients. The two samples were then separated from the Kami platelets and sent to a laboratory for microbial culture. Data were analyzed by Mann-Whitney, T-test (α = 0.05). \u0000Results: The use of thyme essence increases the mean area of Candida albicans inhibition, which was significantly higher than that in the control group (p value = 0.03). The effect of Fluconazole solution on this mean area )Candida albicans inhibition zone( was not significant compared to that observed in the control group (p value = 0.5). In the group in which thyme essence was used, the mean area of Streptococcus mutans inhibition, which was significantly higher than that in the control group (p value = 0.05). When Fluconazole solution was used, the mean area of Streptococcus mutans inhibition, was not significant compared to that observed in the control group (p value = 0.071). \u0000Conclusion: Compared to Fluconazole solution, thyme essence functions more effectively in increasing Candida and Streptococcus mutans inhibition zones.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128700434","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":"Cost Analysis of Maxillofacial Trauma in Shiraz Shahid Rajayee Hospital","authors":"E. Aliabadi, Nima Jalali","doi":"10.18502/ijds.v17i2.6879","DOIUrl":"https://doi.org/10.18502/ijds.v17i2.6879","url":null,"abstract":"Introduction: Accidents are one of the most important cause of morbidity and mortality in different societies. One of the prevalent complications of crash and other accidents is maxillofacial fractures which in addition to abundant difficulties for patients has a high burden for health system of countries. So the aim of this study was analytical evaluation of financial burden of maxillofacial trauma with respect to demographic variables, therefore the costs of maxillofacial traumas were evaluated in Shiraz. \u0000Materials & Methods: In this cross-sectional study, records of 200 patients hospitalized for maxillofacial trauma in Shiraz Shahid Rajayee hospital during 2018 to 2019 were evaluated. Costs of different parts of treatment, trauma mechanisms in addition to demographic characteristics (age and gender) were recorded for each patient. Data analysis was carried out by descriptive analysis. \u0000Results: Of total of 200 patients were hospitalized due to the maxillofacial injuries, 40 (20 %) were female and 160 (80%) were male. The age average was 39.9 years. The most common cause of trauma was crashes (81.5%). In average, 89272763 Rials was spent for each patient. \u0000Conclusion: Results of the current study demonstrated that a huge budget is spent each year for accident patients whom have maxillofacial fractures.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131346455","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":"The Assessment of Time and Storage Environment Effects on Dimensional Changes of Two Types of Acrylic Resin Post Patterns GC and Reliance","authors":"Amin Khaleghi, Malihe Taghizadeh, M. Hormozi","doi":"10.18502/ijds.v17i2.6875","DOIUrl":"https://doi.org/10.18502/ijds.v17i2.6875","url":null,"abstract":"Introduction: The purpose of this study was to investigate and compare the dimensional changes in the acrylic patterns that were stored in the different times and conditions of storage. \u0000Materials& Methods: In this experimental study The sample number was 28 in 4 groups. The mixed paste of acrylic samples were placed inside a metal mold and after setting time with the slightest of deformations it was removed. Using this method 28 samples were prepared for each material. The diameters of samples were then measured immediately using a digital caliper with a precision of 0.01 mm. The samples were then divided into four quadruple groups and stored at 22° C room temperature, 22° Cat water, Dry 4° C environment and 4° C water. The dimensions of the four groups were measured at intervals of 1, 8, 24, and 48 hours after polymerization and being removed from the metal molds. The ANOVA test was used for data analysis (p value = 0.05). \u0000Results: The findings of the current study showed that the dimensional changes of Duralay and GC acrylic resins at both 4 and 22° C in dry and water environments are decreasing over time (p value < 0.001). This study indicated that the contraction rate of two types of acrylic resins, Duralay and GC, at two temperatures of 4 and 22° C, and dry and humid conditions and at various times were not different. \u0000Conclusion: Dimensional changes in of the two types of acrylic resin, Duralay and GC, During the lapse, the procedure is going to be decreased but have not seen any statistical difference between these type of acrylic resin in environment storage.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"389 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116664523","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":"Evaluation of Antibacterial and Antifungal Properties of ZnO and Silver Nanoparticles against Candida Albicans and Streptococcus Mutans in Acrylic Resin","authors":"Amin Khaleghi, Amin Archin, Mojtaba Azarian Borujeni","doi":"10.18502/ijds.v17i2.6877","DOIUrl":"https://doi.org/10.18502/ijds.v17i2.6877","url":null,"abstract":"Introduction: This study aimed to evaluate the antibacterial and antifungal effect of Ag and zinc oxide nanoparticles to complete denture acrylic resin. \u0000Materials & Methods: In this experimental laboratory study, 144 samples were evaluated. The powder of acrylic resin (PMMA Ivoclar Vivadent, Lichenstein SR Triplex Hot) was mixed homogeneously in the ultrasonic apparatus with Ag (purity: 99.99%, size: 20nm, spherical) and ZnO (purity: 99%, size: 10-30 nm, nearly spherical) particles with mass fraction 0.5, 1 ,2 and 5. The microorganisms of this study were Candida albicans and Streptococcus mutans. The growth rate of microorganisms was measured by spectrophotometer based on turbidity and readings at 600 nm. Data were analyzed by ANOVA and Tukey post hoc tests. The significance level was set at 0.05. \u0000Results: Increasing Ag and ZnO nanoparticles to acrylic resin reduced the growth of Candida Albicans and Streptococcus Mutans. Even the concentration of 0.5% significantly reduced the growth of microorganisms. Complete growth inhibition was in the concentration of 5% after 24 and 48 hours. \u0000Conclusion: Increasing the Ag and ZnO nanoparticles to acrylic resin reduced the growth of microorganisms.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133850121","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":"A Comparative Study on Presence of Candida Albicans in Oral Squamous Cell Carcinoma, Oral Dysplastic Lesions and Normal Oral Mucosa","authors":"Farshad Shahvali, A. Aminzadeh, S. Razavi","doi":"10.18502/IJDS.V17I1.5914","DOIUrl":"https://doi.org/10.18502/IJDS.V17I1.5914","url":null,"abstract":"Introduction: Candida Albicans, has been suggested as a possible etiologic factor in the development of leukoplakia and oral squamous cell carcinoma. The aim of this study was to evaluate and compare the presence of Candida Albicans in samples with histopathological diagnosis of squamous cell carcinoma and dysplasia with healthy oral mucosa. \u0000Materials and Methods: This retrospective descriptive-analytical study was carried out on 30 samples in three groups (10 samples per group) with histopathological diagnosis of squamous cell carcinoma, epithelial dysplasia, and healthy mucosa. To identify Candida, used special PAS staining and a 400X optical microscope. The results of study analyzed with Fisher exact test with the 0.05 level of significance. \u0000Results: In the group diagnose with squamous cell carcinoma, Candida Albicans was present in 90% of the samples. In the other two groups with epithelial dysplasia and normal epithelium, positive PAS staining of candida was observed in 50% and 60 % samples respectively. A significant statistical difference between the group of squamous cell carcinoma and the other two groups was observed in terms of amount of Candida Albicans present in the samples. (p value < 0.05), however there was no such significant between the group with epithelial dysplasia samples and the one with normal epithelium samples (p value > 0.05). \u0000Discussion and conclusion. According to the results of present study and the results of previous studies, it can be concluded that Candida Albicans probably plays a role not as an etiological factor but as a factor leading to epithelial malignancies. We recommend more studies to be carried out on this topic.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125748955","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}