Pub Date : 2023-03-07DOI: 10.18502/ijds.v18i4.12110
MohammadMostafa Aghamohseni, S. Farhad
Introduction: Stem cells and tissue engineering have shown great potential in the treatment of periodontal diseases since their introduction. Mesenchymal stem cells are undifferentiated cells that can differentiate into different tissues. The aim of this study was to evaluate the effectiveness of different types of these cells in the treatment of periodontal defects.Description: Mesenchymal stem cells exist around different tissues and can be obtained and used from different intraoral or extraoral sources for periodontal tissue regeneration procedures. Among extracellular stem cells, bone marrow stem cells followed by adipose tissue stem cells have shown promising results regarding the ability of these cells to regenerate the periodontium. Among intraoral sources, periodontal ligament mesenchymal stem cells and then dental pulp cells have shown more results and ability compared to other cell types to regenerate periodontal tissue. Periodontal ligament stem cells have also been able to generate sharpey fibers in periodontal regeneration procedures in various studies.Conclusion: Mesenchymal stem cells have shown promising results for use in periodontal tissue regeneration processes. However, due to the limited clinical and preclinical studies performed so far, more studies are needed for assessing the clinical use of these generative of cells.
{"title":"The Ability of Mesenchymal Stem Cells for Periodontal Tissue Regeneration: A Comprehensive Review of Literature","authors":"MohammadMostafa Aghamohseni, S. Farhad","doi":"10.18502/ijds.v18i4.12110","DOIUrl":"https://doi.org/10.18502/ijds.v18i4.12110","url":null,"abstract":"Introduction: Stem cells and tissue engineering have shown great potential in the treatment of periodontal diseases since their introduction. Mesenchymal stem cells are undifferentiated cells that can differentiate into different tissues. The aim of this study was to evaluate the effectiveness of different types of these cells in the treatment of periodontal defects.Description: Mesenchymal stem cells exist around different tissues and can be obtained and used from different intraoral or extraoral sources for periodontal tissue regeneration procedures. Among extracellular stem cells, bone marrow stem cells followed by adipose tissue stem cells have shown promising results regarding the ability of these cells to regenerate the periodontium. Among intraoral sources, periodontal ligament mesenchymal stem cells and then dental pulp cells have shown more results and ability compared to other cell types to regenerate periodontal tissue. Periodontal ligament stem cells have also been able to generate sharpey fibers in periodontal regeneration procedures in various studies.Conclusion: Mesenchymal stem cells have shown promising results for use in periodontal tissue regeneration processes. However, due to the limited clinical and preclinical studies performed so far, more studies are needed for assessing the clinical use of these generative of cells.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132483700","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}
Pub Date : 2023-03-07DOI: 10.18502/ijds.v18i4.12096
Homeyra Mardani, Bahareh Rashnavadi, N. A. Moghadam
Introduction: Squamous cell carcinoma is the most common type of oral cancer that shows certain tissue changes. Laminin-5γ2 is a protein that plays a central role in migration of the neoplastic cells during tumor invasion. Expression of this protein in cells and stroma adjacent to tumor can confirm the cellular invasion. The aim of this study was to evaluate stroma in verrucous carcinoma and squamous cell carcinoma of the mouth using two markers α SMA and laminin 5 gamma 2.Materials & Methods: In this retrospective descriptive-analytical study, 60 samples were selected with the diagnosis of squamous cell carcinoma and verrucous oral carcinoma. Then, two markers of α SMA and laminin 5 gamma 2 were examined in epithelium and mesenchymal stroma by immunohistochemistry. The vasculature was used as a positive immunoreactivity control for alpha-smooth muscle and the normal mucosa was used to control the positive immunoreactivity of laminin 5 gamma 2. The results were analyzed using Chi-square and Spearman correlation tests (α = 0.05).Results: Out of 31 SCC samples, 80.6% showed laminin 5 gamma 2 and 90.3% showed alpha smooth and out of 9 samples of varocus carcinoma, 66.7% showed laminin 5 gamma 2 and 77.8% showed alpha smooth actin. The higher the positive percentage of laminin, the higher the percentage of positive α SMA.Conclusion: Expression of alpha smooth muscle actin and lamminin 5 gamma 2 was significantly higher in oral squamous cell carcinoma and there exists a correlation between expression of alpha smooth muscle actin and the increase in myofibroblasts takes place during the carcinogenesis process.
{"title":"Immunohistochemical Expression of Alpha Smooth Muscle Actin Positive Myofibroblast and Laminin 5 gamma 2 in Squamous Cell Carcinoma and Verrucous Carcinoma of the Oral Cavity","authors":"Homeyra Mardani, Bahareh Rashnavadi, N. A. Moghadam","doi":"10.18502/ijds.v18i4.12096","DOIUrl":"https://doi.org/10.18502/ijds.v18i4.12096","url":null,"abstract":"Introduction: Squamous cell carcinoma is the most common type of oral cancer that shows certain tissue changes. Laminin-5γ2 is a protein that plays a central role in migration of the neoplastic cells during tumor invasion. Expression of this protein in cells and stroma adjacent to tumor can confirm the cellular invasion. The aim of this study was to evaluate stroma in verrucous carcinoma and squamous cell carcinoma of the mouth using two markers α SMA and laminin 5 gamma 2.Materials & Methods: In this retrospective descriptive-analytical study, 60 samples were selected with the diagnosis of squamous cell carcinoma and verrucous oral carcinoma. Then, two markers of α SMA and laminin 5 gamma 2 were examined in epithelium and mesenchymal stroma by immunohistochemistry. The vasculature was used as a positive immunoreactivity control for alpha-smooth muscle and the normal mucosa was used to control the positive immunoreactivity of laminin 5 gamma 2. The results were analyzed using Chi-square and Spearman correlation tests (α = 0.05).Results: Out of 31 SCC samples, 80.6% showed laminin 5 gamma 2 and 90.3% showed alpha smooth and out of 9 samples of varocus carcinoma, 66.7% showed laminin 5 gamma 2 and 77.8% showed alpha smooth actin. The higher the positive percentage of laminin, the higher the percentage of positive α SMA.Conclusion: Expression of alpha smooth muscle actin and lamminin 5 gamma 2 was significantly higher in oral squamous cell carcinoma and there exists a correlation between expression of alpha smooth muscle actin and the increase in myofibroblasts takes place during the carcinogenesis process.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"175 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132738266","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}
Pub Date : 2023-03-07DOI: 10.18502/ijds.v18i4.12103
Batool Hashemi-Beni, M. Khoroushi, Saeed Karbasi, F. Heidari, Mohamad Reza Foroughi
Introduction: In tissue engineering, a porous material is applied as the extracellular matrix or scaffold for cell growth. Then growth factors are added to this scaffold whose cytotoxicity must be assessed. In this study, the cytotoxicity effects of polyhydroxybutyrate/chitosan/bioglass nanocomposite scaffolds on human osteoblast like cells (SAOS-2 cells) are explored.Materials & Methods: This study was experimental and was done in Isfahan Dental School. The polyhydroxybutyrate/chitosan/bioglass nanocomposite scaffold was fabricated using the electrospinning method. Scanning Electron Microscopy (SEM) analysis was used to evaluate the morphological characteristics of the nanofibers and their diameter distribution. Additionally, bioglass nanoparticles in the fibers were identified via SEM. The MTT assay was performed to assess cell viability after 3, 5, and 7 days. The collected data were analyzed using SPSS 20.0 through statistical tests including Kruskal-Wallis test (p value ≤ 0.05).Results: According to SEM images, the scaffold fibers were fully porous and no beads were observed. Furthermore, the polyhydroxybutyrate/chitosan/bioglass scaffold showed greater cell viability and proliferation compared to the groups lacking bioglass.Conclusion: The polyhydroxybutyrate/chitosan/bioglass scaffold has no cytotoxic effect on osteoblast– like cells.
{"title":"Cytotoxicity Effects of Polyhydroxybutyrate/Chitosan/Bioglass Nanocomposite Scaffolds on Human Osteoblast-like Cells (SAOS-2 Cells)","authors":"Batool Hashemi-Beni, M. Khoroushi, Saeed Karbasi, F. Heidari, Mohamad Reza Foroughi","doi":"10.18502/ijds.v18i4.12103","DOIUrl":"https://doi.org/10.18502/ijds.v18i4.12103","url":null,"abstract":"Introduction: In tissue engineering, a porous material is applied as the extracellular matrix or scaffold for cell growth. Then growth factors are added to this scaffold whose cytotoxicity must be assessed. In this study, the cytotoxicity effects of polyhydroxybutyrate/chitosan/bioglass nanocomposite scaffolds on human osteoblast like cells (SAOS-2 cells) are explored.Materials & Methods: This study was experimental and was done in Isfahan Dental School. The polyhydroxybutyrate/chitosan/bioglass nanocomposite scaffold was fabricated using the electrospinning method. Scanning Electron Microscopy (SEM) analysis was used to evaluate the morphological characteristics of the nanofibers and their diameter distribution. Additionally, bioglass nanoparticles in the fibers were identified via SEM. The MTT assay was performed to assess cell viability after 3, 5, and 7 days. The collected data were analyzed using SPSS 20.0 through statistical tests including Kruskal-Wallis test (p value ≤ 0.05).Results: According to SEM images, the scaffold fibers were fully porous and no beads were observed. Furthermore, the polyhydroxybutyrate/chitosan/bioglass scaffold showed greater cell viability and proliferation compared to the groups lacking bioglass.Conclusion: The polyhydroxybutyrate/chitosan/bioglass scaffold has no cytotoxic effect on osteoblast– like cells.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133587261","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}
Pub Date : 2023-03-07DOI: 10.18502/ijds.v18i4.12112
Fataneh Ghorbanyjavadpour
Introduction: The anterior open bite is a multifactorial malocclusion and a challenge between orthodontists. Based on the origin, divided in two types as dental and skeletal, and appear in the anterior or posterior segments, (unilateral or bilateral). Dental open-bite in the most of patients have environmental etiologic factor such as oral habits, tongue trust, mouth breathing, large tongue. In skeletal type, excessive vertical growth of the maxilla is etiologic factor and accompany with downward-backward rotation of the mandible.Case Report: The case was a 27 years woman with an anterior open bite and unilateral impacted upper canine and congenital missing of lower 2nd premolar in the left side and retained 2nd lower deciduous molar and upper canine in the left side. She consulted for orthodontic treatment in Tehran Dental School of Shahid Beheshti University of Medical Sciences in October of 2017.The Orthodontic treatment was down with MBT slot 22 system (USA. Orthoorganizer, inc) for apply extrusive force on impacted upper canine in left side with auxiliary 014 ss, segmented arch wire. loop arch wire technique with 16 × 22 ss rectangular continuous arch wire was used for space closing in extraction site and correction overbite. The extracted teeth were right lower 2nd premolar and left 2nd deciduous molar and 1st premolars in upper arch. As recommended advancement genioplasty for correction chin deficiency the patient refused it. Conclusion: In this technique we used Orthodontic treatment alone instead of Orthognathic surgery for open bite correction.
{"title":"Treatment of Severe Anterior Open-bite Accompany with Impacted Canine: A Case Report","authors":"Fataneh Ghorbanyjavadpour","doi":"10.18502/ijds.v18i4.12112","DOIUrl":"https://doi.org/10.18502/ijds.v18i4.12112","url":null,"abstract":"Introduction: The anterior open bite is a multifactorial malocclusion and a challenge between orthodontists. Based on the origin, divided in two types as dental and skeletal, and appear in the anterior or posterior segments, (unilateral or bilateral). Dental open-bite in the most of patients have environmental etiologic factor such as oral habits, tongue trust, mouth breathing, large tongue. In skeletal type, excessive vertical growth of the maxilla is etiologic factor and accompany with downward-backward rotation of the mandible.Case Report: The case was a 27 years woman with an anterior open bite and unilateral impacted upper canine and congenital missing of lower 2nd premolar in the left side and retained 2nd lower deciduous molar and upper canine in the left side. She consulted for orthodontic treatment in Tehran Dental School of Shahid Beheshti University of Medical Sciences in October of 2017.The Orthodontic treatment was down with MBT slot 22 system (USA. Orthoorganizer, inc) for apply extrusive force on impacted upper canine in left side with auxiliary 014 ss, segmented arch wire. loop arch wire technique with 16 × 22 ss rectangular continuous arch wire was used for space closing in extraction site and correction overbite. The extracted teeth were right lower 2nd premolar and left 2nd deciduous molar and 1st premolars in upper arch. As recommended advancement genioplasty for correction chin deficiency the patient refused it. Conclusion: In this technique we used Orthodontic treatment alone instead of Orthognathic surgery for open bite correction.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132380331","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}
Pub Date : 2023-03-07DOI: 10.18502/ijds.v18i4.12099
J. Yaghini, Amir Farmohammadi, M. Karimian, M. Jamshidi
Introduction: Genetic diversity in cytokines such as interleukin α1 and interleukin 1β is involved in altering the immune response in inflammatory diseases such as chronic periodontitis and changes the risk of this disease. The aim of this study was to investigate the association of genetic polymorphisms 4845G> T interleukin 1α and 3954C> T interleukin 1β with the risk of chronic periodontitis.Materials & Methods: Participants including 133 healthy individuals and 133 individuals with chronic periodontitis referred to Isfahan Dental School, were included in the study. The genotype of blood samples at the site of the above polymorphism was determined by PCR-RFLP method. The relationship between the studied polymorphisms and chronic periodontitis was calculated by logistic regression test. Statistical analyzes were performed by SPSS software. The p value level < 0.05 was statistically significant.Results: Data analysis showed a significant relationship between CT and TT genotypes and T allele of polymorphism 3954C> T interleukin 1β and increased risk of chronic periodontitis and no significant relationship between polymorphism 4845G> T of interleukin 1α and the risk of Showed chronic periodontitis.Conclusion: Based on the above data, T> 3954C polymorphism is a risk factor for chronic periodontitis and serves as a potential biomarker for screening people prone to this disease.
{"title":"Evaluation of the Relationship between rs17561 and rs1143634 Genetic Polymorphisms and the Risk of Chronic Periodontitis","authors":"J. Yaghini, Amir Farmohammadi, M. Karimian, M. Jamshidi","doi":"10.18502/ijds.v18i4.12099","DOIUrl":"https://doi.org/10.18502/ijds.v18i4.12099","url":null,"abstract":"Introduction: Genetic diversity in cytokines such as interleukin α1 and interleukin 1β is involved in altering the immune response in inflammatory diseases such as chronic periodontitis and changes the risk of this disease. The aim of this study was to investigate the association of genetic polymorphisms 4845G> T interleukin 1α and 3954C> T interleukin 1β with the risk of chronic periodontitis.Materials & Methods: Participants including 133 healthy individuals and 133 individuals with chronic periodontitis referred to Isfahan Dental School, were included in the study. The genotype of blood samples at the site of the above polymorphism was determined by PCR-RFLP method. The relationship between the studied polymorphisms and chronic periodontitis was calculated by logistic regression test. Statistical analyzes were performed by SPSS software. The p value level < 0.05 was statistically significant.Results: Data analysis showed a significant relationship between CT and TT genotypes and T allele of polymorphism 3954C> T interleukin 1β and increased risk of chronic periodontitis and no significant relationship between polymorphism 4845G> T of interleukin 1α and the risk of Showed chronic periodontitis.Conclusion: Based on the above data, T> 3954C polymorphism is a risk factor for chronic periodontitis and serves as a potential biomarker for screening people prone to this disease.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133140017","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}
Pub Date : 2023-03-07DOI: 10.18502/ijds.v18i4.12100
Mahsa Kianifar
Introduction: Being the first teeth to erupt, first molars have the most complex root system and canal morphology and are among the most susceptible teeth to decay and destruction. The aim of this study is to determine the frequency of morphological variations of the canal and root of the mandibular first molar in cbct images so that appropriate treatment can be performed with a better understanding of the anatomy of the root and canal of the molar tooth.Materials & Methods: In this descriptive cross-sectional study, the morphological variation of the mandibular first molar canal and root was investigated in 170 cbct radiology image samples. In this study, the age and gender of the individual, the number of roots and canals of the mandibular first molar, the morphology of the canal in each root, the presence of the midmesial canal and the presence of the distolingual root were also investigated. In the end, frequency and percentage indicators were used to analyze data and chi-square test was used to compare frequencies.Results: The average age of the subjects studied was 39.2 years. The subjects included 86 women and 84 men. The most seen sample was a molar tooth with two roots and three canals. In terms of canal morphology in the mesial root, the most common canal morphology was type 4 and then type 2. In terms of canal morphology in the distal root, the most common canal morphology was type 1. In the studied samples, midmesial canal was not found in 99.4% of cases and distolingual root was not found in 94.7% of cases.Conclusion: Two-rooted and three-channel molar without midmesial canal and without distolingual root was the most common case found in this study. The most common canal morphology in the mesial root was type 4 and the most common canal morphology in the distal root was type 1.
{"title":"Investigation of Morphological Variations of Canal and Root of First Mandibular Molar in Tomographic Images Computer with Cone Beam in Patients of Arak City","authors":"Mahsa Kianifar","doi":"10.18502/ijds.v18i4.12100","DOIUrl":"https://doi.org/10.18502/ijds.v18i4.12100","url":null,"abstract":"Introduction: Being the first teeth to erupt, first molars have the most complex root system and canal morphology and are among the most susceptible teeth to decay and destruction. The aim of this study is to determine the frequency of morphological variations of the canal and root of the mandibular first molar in cbct images so that appropriate treatment can be performed with a better understanding of the anatomy of the root and canal of the molar tooth.Materials & Methods: In this descriptive cross-sectional study, the morphological variation of the mandibular first molar canal and root was investigated in 170 cbct radiology image samples. In this study, the age and gender of the individual, the number of roots and canals of the mandibular first molar, the morphology of the canal in each root, the presence of the midmesial canal and the presence of the distolingual root were also investigated. In the end, frequency and percentage indicators were used to analyze data and chi-square test was used to compare frequencies.Results: The average age of the subjects studied was 39.2 years. The subjects included 86 women and 84 men. The most seen sample was a molar tooth with two roots and three canals. In terms of canal morphology in the mesial root, the most common canal morphology was type 4 and then type 2. In terms of canal morphology in the distal root, the most common canal morphology was type 1. In the studied samples, midmesial canal was not found in 99.4% of cases and distolingual root was not found in 94.7% of cases.Conclusion: Two-rooted and three-channel molar without midmesial canal and without distolingual root was the most common case found in this study. The most common canal morphology in the mesial root was type 4 and the most common canal morphology in the distal root was type 1.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116207960","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}
Pub Date : 2023-03-07DOI: 10.18502/ijds.v18i4.12097
M. Bolbolian, M. Esfehani, N. Hajihassani, Z. Khalili, M. Mobini, M. Tofangchiha
Introduction: External root resorption is a clinical problem that is difficult to diagnose, therefore radiographic examination is important for diagnose. The purpose of this study was comparing the diagnostic accuracy of 2 Cone Beam Computed Tomography in detecting of external root resorption, in vitro.Materials & Methods: This study was done on 48 single-rooted teeth. Cavities of 0.3, 0.2 and 0.15 mm in depth with round bur 0.3 mm were drilled on buccal and lingual surfaces in the cervical, middle and apical thirds of some of roots. Then CBCT were taken and 4 observers assessed the scans. Sensitivity, specificity and Kappa value were determined. The statistical analysis was performed with the Z-test (p value < 0.05).Results: In comparison of the accuracy, sensitivity and specificity of the two devices, there was no significant difference. In the apical, middle and cervical as well as at various depths there was no significant difference between the two devices, but in the numerical point of view, the sensitivity for both devices in the midsection, was in the highest amount. The highest value for the specificity is related to the apical region. For both devices, the sensitivity level GBJ, by increasing the depth. The lowest agreement between observers was 0.61. The highest agreement rate was in the middle section and the least amount of agreement was related to the apical region.Conclusion: CBCT brand type is not effective factor in the detection of external root resorption. The location and depth of external root resorption can be effective factors in diagnostic accuracy.
{"title":"Comparison of Diagnostic Accuracy of 2 Cone Beam Computed Tomography System (Newtom &Planmeca) for Detection of External Root Resorption in Vitro","authors":"M. Bolbolian, M. Esfehani, N. Hajihassani, Z. Khalili, M. Mobini, M. Tofangchiha","doi":"10.18502/ijds.v18i4.12097","DOIUrl":"https://doi.org/10.18502/ijds.v18i4.12097","url":null,"abstract":"Introduction: External root resorption is a clinical problem that is difficult to diagnose, therefore radiographic examination is important for diagnose. The purpose of this study was comparing the diagnostic accuracy of 2 Cone Beam Computed Tomography in detecting of external root resorption, in vitro.Materials & Methods: This study was done on 48 single-rooted teeth. Cavities of 0.3, 0.2 and 0.15 mm in depth with round bur 0.3 mm were drilled on buccal and lingual surfaces in the cervical, middle and apical thirds of some of roots. Then CBCT were taken and 4 observers assessed the scans. Sensitivity, specificity and Kappa value were determined. The statistical analysis was performed with the Z-test (p value < 0.05).Results: In comparison of the accuracy, sensitivity and specificity of the two devices, there was no significant difference. In the apical, middle and cervical as well as at various depths there was no significant difference between the two devices, but in the numerical point of view, the sensitivity for both devices in the midsection, was in the highest amount. The highest value for the specificity is related to the apical region. For both devices, the sensitivity level GBJ, by increasing the depth. The lowest agreement between observers was 0.61. The highest agreement rate was in the middle section and the least amount of agreement was related to the apical region.Conclusion: CBCT brand type is not effective factor in the detection of external root resorption. The location and depth of external root resorption can be effective factors in diagnostic accuracy.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134129382","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}
Pub Date : 2023-03-06DOI: 10.18502/ijds.v18i4.12088
Fateme Eskandari, Nasim Esnaashari, R. Ghaffari, Seyedeh Leila Mousavizadeh Mobarakeh
Introduction: Due to the increased prevalence of third molar impaction and the complications and existence of disagreements regarding the predicting factors for the impaction of this tooth, the aim of this study was to evaluate the relationship between the position of the mandibular third molar with different vertical skeletal dimensions on the panoramic images.Materials & Methods: This cross sectional study was carried out on lateral cephalogram and orthopantomogram records of 130 orthodontic patients visiting to Isfahan (Khorasgan) University Dental School. Age range of the sample was 20-35 years. Various facial forms were determined with mandibular plane angle (SN-GoGn), jarabak index and Y-axis; S-GN– Frankfort plane. Beta angle; which is the angle between intersecting long axis of mandibular second molar and mandibular third molar was measured to determine the angle of eruption of mandibular third molar. Eruption pattern was classified as per Pell & Gregory and winter’s system. The data were analyzed by Chi-square test (p value < 0.05).Results: There was a significant difference in the frequency distribution of growth pattern on the left side of the jaw (p value = 0.048). There was no significant difference in the frequency distribution of the eruption pattern in the right side of the jaw (p value = 0.11). There was no significant difference in the frequency distribution of eruption surface in the right face between different facial forms (p value = 0.49) But on the left side of the jaw there was a significant difference between the three facial forms (p value = 0.049). Frequency distribution of mandibular third molar impaction was significantly different between the three facial forms (p value = 0.03). There was no significant difference between the three facial forms in terms of frequency of eruption angle in the right side of the jaw (p value = 0.25) and also in the left side of the jaw (p value = 0.15).Conclusion: The incidence of impaction was significantly more in patients with long face than in other two groups. The prevalence of surface and pattern of third molar eruption in only one side of jaw was significantly different between the three facial forms. There was no significant difference between the frequency of angle of eruption and facial skeletal types in both jaws.
{"title":"Relationship between the Position of the Mandibular Third Molar with Different Vertical Skeletal Dimensions on the Panoramic Images in Patients Referred to Isfahan (Khorasgan) University Dental School","authors":"Fateme Eskandari, Nasim Esnaashari, R. Ghaffari, Seyedeh Leila Mousavizadeh Mobarakeh","doi":"10.18502/ijds.v18i4.12088","DOIUrl":"https://doi.org/10.18502/ijds.v18i4.12088","url":null,"abstract":"Introduction: Due to the increased prevalence of third molar impaction and the complications and existence of disagreements regarding the predicting factors for the impaction of this tooth, the aim of this study was to evaluate the relationship between the position of the mandibular third molar with different vertical skeletal dimensions on the panoramic images.Materials & Methods: This cross sectional study was carried out on lateral cephalogram and orthopantomogram records of 130 orthodontic patients visiting to Isfahan (Khorasgan) University Dental School. Age range of the sample was 20-35 years. Various facial forms were determined with mandibular plane angle (SN-GoGn), jarabak index and Y-axis; S-GN– Frankfort plane. Beta angle; which is the angle between intersecting long axis of mandibular second molar and mandibular third molar was measured to determine the angle of eruption of mandibular third molar. Eruption pattern was classified as per Pell & Gregory and winter’s system. The data were analyzed by Chi-square test (p value < 0.05).Results: There was a significant difference in the frequency distribution of growth pattern on the left side of the jaw (p value = 0.048). There was no significant difference in the frequency distribution of the eruption pattern in the right side of the jaw (p value = 0.11). There was no significant difference in the frequency distribution of eruption surface in the right face between different facial forms (p value = 0.49) But on the left side of the jaw there was a significant difference between the three facial forms (p value = 0.049). Frequency distribution of mandibular third molar impaction was significantly different between the three facial forms (p value = 0.03). There was no significant difference between the three facial forms in terms of frequency of eruption angle in the right side of the jaw (p value = 0.25) and also in the left side of the jaw (p value = 0.15).Conclusion: The incidence of impaction was significantly more in patients with long face than in other two groups. The prevalence of surface and pattern of third molar eruption in only one side of jaw was significantly different between the three facial forms. There was no significant difference between the frequency of angle of eruption and facial skeletal types in both jaws.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116118873","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}
Pub Date : 2023-03-06DOI: 10.18502/ijds.v18i4.12091
Sara Fotoohi Ashin, Davoud Ghasemi Toodeshkchooie, M. Barekatain
Introduction: Due to the prevalence of the use of oral liquid medications in children with chronic diseases (asthma, heart problems, seizures and kidney problems) and also in children with transient diseases (influenza, colds, tonsillitis, ear infections, sinusitis and seasonal allergy) and due to the fact that several studies have shown that children’s' common medications affect topography and enamel structure, and composite bonding is dependent on enamel structure, the aim of this study was to investigate the effect of oral liquid medications used in children on composite bond strength to primary canine dental enamel.Materials & Methods: In this experimental-laboratory study, 90 teeth were divided into 9 groups, 8 drug groups and 1 control group (artificial saliva). Each group of 10 teeth was immersed 3 times a day for 1 minute in 10 ml of the desired drug. After 7 days and after 14 days, 5 teeth from each group were bonded with composite and their shear bond strengths were measured. Data were analyzed by one-way ANOVA, paired T-test and Pearson correlation coefficient tests. (α = 0.05).Results: In all groups, in comparison with the control group, the mean bond strength was not significantly different in the first and second weeks (p value > 0.05). Also, there was no significant difference between the mean composite shear bond strengths in each of the nine groups in the first and second weeks (p value > 0.05). Pearson correlation coefficient showed that there was no significant relationship between PH value with shear bond strength of composite in first weeks (p value = 0.53) and second (p value = 0.83).Conclusion: Based on this study, short-term use (up to 14 days) of medications did not significantly change the shear bond strength of the composite to enamel.
{"title":"Effects of Oral Liquid Medicaments in Children on Shear Bond Strength of Resin Composite in Primary Teeth","authors":"Sara Fotoohi Ashin, Davoud Ghasemi Toodeshkchooie, M. Barekatain","doi":"10.18502/ijds.v18i4.12091","DOIUrl":"https://doi.org/10.18502/ijds.v18i4.12091","url":null,"abstract":"Introduction: Due to the prevalence of the use of oral liquid medications in children with chronic diseases (asthma, heart problems, seizures and kidney problems) and also in children with transient diseases (influenza, colds, tonsillitis, ear infections, sinusitis and seasonal allergy) and due to the fact that several studies have shown that children’s' common medications affect topography and enamel structure, and composite bonding is dependent on enamel structure, the aim of this study was to investigate the effect of oral liquid medications used in children on composite bond strength to primary canine dental enamel.Materials & Methods: In this experimental-laboratory study, 90 teeth were divided into 9 groups, 8 drug groups and 1 control group (artificial saliva). Each group of 10 teeth was immersed 3 times a day for 1 minute in 10 ml of the desired drug. After 7 days and after 14 days, 5 teeth from each group were bonded with composite and their shear bond strengths were measured. Data were analyzed by one-way ANOVA, paired T-test and Pearson correlation coefficient tests. (α = 0.05).Results: In all groups, in comparison with the control group, the mean bond strength was not significantly different in the first and second weeks (p value > 0.05). Also, there was no significant difference between the mean composite shear bond strengths in each of the nine groups in the first and second weeks (p value > 0.05). Pearson correlation coefficient showed that there was no significant relationship between PH value with shear bond strength of composite in first weeks (p value = 0.53) and second (p value = 0.83).Conclusion: Based on this study, short-term use (up to 14 days) of medications did not significantly change the shear bond strength of the composite to enamel.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130755148","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}
Pub Date : 2023-03-06DOI: 10.18502/ijds.v18i4.12095
S. M. Razavi, Nafiseh Tadayon, S. Tabatabaei, Z. Jaafari-Ashkavandi, L. Maleki
Introduction: Odontogenic cysts and tumors are lesions found in the upper and lower jaw and oral soft tissue. The understanding and correct diagnosis of odontogenic tumors is essential because they can be invasive or recurrent in nature and even rarely show malignant changes. The aim of this study was to evaluate the frequency of odontogenic tumors in Isfahan, Shiraz and Yazd cites.Materials & Methods: This is a cross-sectional descriptive- analytical study that was performed in the mentioned centers. The records of registered samples from the first year of establishment to 2018 have been reviewed which is approximately 18,000 cases. Samples data were extracted and recorded based on sex, age, jaw and location of involvement in affected jaw. Data were analyzed using descriptive statistics and Chi-square test (p value < 0.05).Results: In this study, a total of 498 odontogenic tumors were evaluated. The number of odontogenic tumors in Isfahan, Shiraz and Yazd cities was 313, 130 and 55, respectively. The mean age of the patients was 30.1 ± 15.9 and most of the patients were in the age group of 20 to 40 years and 53.4% were female. The most common sites of involvement were the right mandibular (29.1%) and then the left mandibular (28.3%) and the most common tumor was ameloblastoma (50.2%) and then complex odontoma (16.7%).Conclusion: Due to the frequency observed for odontogenic tumors, understanding the clinical and pathologic features of these lesions is essential for rapid and appropriate diagnosis and treatment.
{"title":"Evaluation of Odontogenic Tumors Frequency in Biopsies Sent to Isfahan, Shiraz and Yazd Dental Schools","authors":"S. M. Razavi, Nafiseh Tadayon, S. Tabatabaei, Z. Jaafari-Ashkavandi, L. Maleki","doi":"10.18502/ijds.v18i4.12095","DOIUrl":"https://doi.org/10.18502/ijds.v18i4.12095","url":null,"abstract":"Introduction: Odontogenic cysts and tumors are lesions found in the upper and lower jaw and oral soft tissue. The understanding and correct diagnosis of odontogenic tumors is essential because they can be invasive or recurrent in nature and even rarely show malignant changes. The aim of this study was to evaluate the frequency of odontogenic tumors in Isfahan, Shiraz and Yazd cites.Materials & Methods: This is a cross-sectional descriptive- analytical study that was performed in the mentioned centers. The records of registered samples from the first year of establishment to 2018 have been reviewed which is approximately 18,000 cases. Samples data were extracted and recorded based on sex, age, jaw and location of involvement in affected jaw. Data were analyzed using descriptive statistics and Chi-square test (p value < 0.05).Results: In this study, a total of 498 odontogenic tumors were evaluated. The number of odontogenic tumors in Isfahan, Shiraz and Yazd cities was 313, 130 and 55, respectively. The mean age of the patients was 30.1 ± 15.9 and most of the patients were in the age group of 20 to 40 years and 53.4% were female. The most common sites of involvement were the right mandibular (29.1%) and then the left mandibular (28.3%) and the most common tumor was ameloblastoma (50.2%) and then complex odontoma (16.7%).Conclusion: Due to the frequency observed for odontogenic tumors, understanding the clinical and pathologic features of these lesions is essential for rapid and appropriate diagnosis and treatment.","PeriodicalId":221865,"journal":{"name":"Journal of Isfahan Dental School","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121216243","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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