Oral cytology is a renewed field that aids in diagnosis and observation of possible epithelial changes associated with oral mucosal diseases. Aim; to study the main cytomorphological alteration in gingival and buccal smears from type II diabetics in relation to their hyperglycemic status. The study includes 40 type II diabetic patients (20 new-diagnosed and 20 treated diabetics patients) and 20 healthy persons of both sex. Papanicolaou stained smear were prepared from their cheek and gingiva. The morphological features of 100 unfolded epithelial cells were evaluated under light microscope. Results of this study show that diabetics’ oral mucosa cells characterized by large nuclei with frequent evidence of binucleation, granular chromatin, prominent nucleoli. However, there was frequent small blue cytoplasm and buccal smears showed altered keratinization. As conclusion oral cytology from type II diabetics is associated with detectable cytomorphological changes that is site specific and indicate epithelial cell regeneration and degeneration with altered keratinization especially in buccal mucosa.
口腔细胞学是一个更新的领域，有助于诊断和观察与口腔黏膜疾病相关的上皮变化。目的：研究 II 型糖尿病患者牙龈和颊涂片中的主要细胞形态学变化与其高血糖状态的关系。研究对象包括 40 名 II 型糖尿病患者（20 名新诊断的糖尿病患者和 20 名接受过治疗的糖尿病患者）和 20 名男女健康人。从他们的脸颊和牙龈制备巴氏染色涂片。在光学显微镜下对 100 个未折叠上皮细胞的形态特征进行评估。研究结果表明，糖尿病患者口腔黏膜细胞的特点是核大，常有双核现象，染色质呈颗粒状，核仁突出。但是，经常出现蓝色小细胞质，口腔涂片显示角化改变。总之，II 型糖尿病患者的口腔细胞学检查与可检测到的细胞形态学变化有关，具有部位特异性，表明上皮细胞再生和变性，角质化改变，尤其是在口腔黏膜。
{"title":"Cytological Features of Oral Cytobrush Smears in Type II Diabetes Mellitus Patients","authors":"Mohammad T. Ahmed, Balkees T. Garib","doi":"10.25130/tjds.2.1.2","DOIUrl":"https://doi.org/10.25130/tjds.2.1.2","url":null,"abstract":"Oral cytology is a renewed field that aids in diagnosis and observation of possible epithelial changes associated with oral mucosal diseases. Aim; to study the main cytomorphological alteration in gingival and buccal smears from type II diabetics in relation to their hyperglycemic status. The study includes 40 type II diabetic patients (20 new-diagnosed and 20 treated diabetics patients) and 20 healthy persons of both sex. Papanicolaou stained smear were prepared from their cheek and gingiva. The morphological features of 100 unfolded epithelial cells were evaluated under light microscope. Results of this study show that diabetics’ oral mucosa cells characterized by large nuclei with frequent evidence of binucleation, granular chromatin, prominent nucleoli. However, there was frequent small blue cytoplasm and buccal smears showed altered keratinization. As conclusion oral cytology from type II diabetics is associated with detectable cytomorphological changes that is site specific and indicate epithelial cell regeneration and degeneration with altered keratinization especially in buccal mucosa.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"1 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139523963","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}
The purpose of this study was to disclose the relationship of salivary urea, calcium and phosphorous levels with root caries occurrence among overweight and obese adults aged 55-65 year-old at Textile Factory in Mosul City. All subjects aged 55-65 year-old (thirty five subjects) at Textile factory in Mosul city who fitted the study criteria took part in the current study. Weight status was determined by using the Body Mass Index (BMI). Root caries was recorded according to the criteria of WHO (1997). Unstimulated whole saliva was collected then salivary samples were subjected for biochemical analysis. Salivary urea, calcium, and phosphorous were determined colorimetrically by using the spectrophotometer. Results revealed that salivary urea and phosphorous levels were higher among obese and overweight subjects than non-obese with highly significant difference. Also calcium level was significantly elevated among obese compared with non-obese. Sound root surface value was higher among obese than non-obese and overweight subjects with significant difference. On the other hand overweight and obese subjects revealed lower decayed root surface value than non-obese though statistical difference was not significant. As a conclusion obese subjects with good general health might experience reduced root caries severity that might partly be due to changes in salivary constituents. Therefore future studies should address which factors specific to obese might be protective against root caries. Also there is a need for further studies with larger sample size and another sample distribution that include underweight, normal weight, overweight and obese to get more precise and clear results.
{"title":"The Relation of Salivary Constituents (Urea, Calcium and Phosphorous) to Root Caries among Overweight and Obese Adults Aged 55-65 Year-Old at Textile Factory in Mosul City","authors":"Baydaa A. Yas","doi":"10.25130/tjds.2.1.9","DOIUrl":"https://doi.org/10.25130/tjds.2.1.9","url":null,"abstract":"The purpose of this study was to disclose the relationship of salivary urea, calcium and phosphorous levels with root caries occurrence among overweight and obese adults aged 55-65 year-old at Textile Factory in Mosul City. All subjects aged 55-65 year-old (thirty five subjects) at Textile factory in Mosul city who fitted the study criteria took part in the current study. Weight status was determined by using the Body Mass Index (BMI). Root caries was recorded according to the criteria of WHO (1997). Unstimulated whole saliva was collected then salivary samples were subjected for biochemical analysis. Salivary urea, calcium, and phosphorous were determined colorimetrically by using the spectrophotometer. Results revealed that salivary urea and phosphorous levels were higher among obese and overweight subjects than non-obese with highly significant difference. Also calcium level was significantly elevated among obese compared with non-obese. Sound root surface value was higher among obese than non-obese and overweight subjects with significant difference. On the other hand overweight and obese subjects revealed lower decayed root surface value than non-obese though statistical difference was not significant. As a conclusion obese subjects with good general health might experience reduced root caries severity that might partly be due to changes in salivary constituents. Therefore future studies should address which factors specific to obese might be protective against root caries. Also there is a need for further studies with larger sample size and another sample distribution that include underweight, normal weight, overweight and obese to get more precise and clear results.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139524855","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}
Ghada M. Mustafa, Mohammed A. Abed AlBaki, Sahar A. Naji
This study attempted to evaluate the effects of using partial denture on the oral mucous membrane of the denture bearing area between 48 patients attended the private clinic seeking RPD treatment , two types of denture material were used (Hard or heat cured acrylic partial denture and flexible(Nylon) partial denture) .Flexible dentures exhibited viscoelastic behaviour that lead to improvement in masticatory function and patients comfort compared with hard dentures .Flexible dentures showed little effects on the mucosa of denture bearing area and little changes on the mucosa, but there were high influences on the soft tissues properties with using hard acrylic denture type . Denture hygiene found mainly fair in both hard and flexible(nylon) denture base materials.
{"title":"Comparing the Effects of Denture Base Materials on Hygiene of Mucosal Denture Bearing Area","authors":"Ghada M. Mustafa, Mohammed A. Abed AlBaki, Sahar A. Naji","doi":"10.25130/tjds.2013.1.10","DOIUrl":"https://doi.org/10.25130/tjds.2013.1.10","url":null,"abstract":"This study attempted to evaluate the effects of using partial denture on the oral mucous membrane of the denture bearing area between 48 patients attended the private clinic seeking RPD treatment , two types of denture material were used (Hard or heat cured acrylic partial denture and flexible(Nylon) partial denture) .Flexible dentures exhibited viscoelastic behaviour that lead to improvement in masticatory function and patients comfort compared with hard dentures .Flexible dentures showed little effects on the mucosa of denture bearing area and little changes on the mucosa, but there were high influences on the soft tissues properties with using hard acrylic denture type . Denture hygiene found mainly fair in both hard and flexible(nylon) denture base materials.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"11 42","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139523592","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}
The aim of this study was to investigate the antibacterial activity of three different concentrations of a newly produced CHX powder prepared loc ally in Mosul College of Dentistry in the Department of Dental Basic Sciences( approved by Nineveh Drug Industry (NDI,licence no.2256 in26/9/2002), and to compare it with the same concentrations of commercially available CHX solution against three bacterial isolates commonly isolated from infected root canals, using the agar diffusion test. Astandard agar diffusion test was utilized to investigate the antibacterial activity of different concentrations of experimental chlorhexidine gluconate solution( N DI no.2256)and acommercially available chlorhexidine solution.The diameter of the microbial inhibition zones were measured in millimeter around each paper disk containing the experimental solutions. Data were analyzed using Duncan’s Multiple Range Test (a = 0.05). The results revealed that all tested microorganisms were affected by different concentrations of CHX powder(NDI no.2256) except for the lowest concentration ( 0.1%). Similar results were observed for CHX solution. The new prepared CHX powder(NDI n.2256)can be used aroot canal irrig ant.
{"title":"An in-Vitro Evaluation of the Antibacterial Activity of Experimental Chlorhexidine Gluconate Solution Using Agar Diffusion Test","authors":"Maha M.Yahya, Maan M.Nayif, Amer A.Taqa","doi":"10.25130/tjds.2013.1.13","DOIUrl":"https://doi.org/10.25130/tjds.2013.1.13","url":null,"abstract":"The aim of this study was to investigate the antibacterial activity of three different concentrations of a newly produced CHX powder prepared loc ally in Mosul College of Dentistry in the Department of Dental Basic Sciences( approved by Nineveh Drug Industry (NDI,licence no.2256 in26/9/2002), and to compare it with the same concentrations of commercially available CHX solution against three bacterial isolates commonly isolated from infected root canals, using the agar diffusion test. Astandard agar diffusion test was utilized to investigate the antibacterial activity of different concentrations of experimental chlorhexidine gluconate solution( N DI no.2256)and acommercially available chlorhexidine solution.The diameter of the microbial inhibition zones were measured in millimeter around each paper disk containing the experimental solutions. Data were analyzed using Duncan’s Multiple Range Test (a = 0.05). The results revealed that all tested microorganisms were affected by different concentrations of CHX powder(NDI no.2256) except for the lowest concentration ( 0.1%). Similar results were observed for CHX solution. The new prepared CHX powder(NDI n.2256)can be used aroot canal irrig ant.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"5 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139524075","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}
This study compared in vitro the microleakage of a new low shrink silorane-based posterior composite (Filtek™ P90) and two methacrylate-based composites: a packable posterior composite (Filtek™ P60) and a nanofill composite (Filtek™ Supreme XT) through dye penetration test. Thirty sound human upper premolars were used in this study. Standardized class V cavities were prepared at the buccal surface of each tooth. The teeth were then divided into three groups of ten teeth each: (Group 1: restored with Filtek™ P90, Group 2: restored with Filtek™ P60, and Group 3: restored with Filtek™ Supreme XT). Each composite system was used according to the manufacturer's instructions with their corresponding adhesive systems. The teeth were then thermocycled, immersed in 1% methylene blue dye for 24 hours at room temperature, embedded in auto-polymerizing acrylic resin and sectioned longitudinally bucco-lingually. Microleakage was evaluated by assessing the linear dye penetration at the tooth/restoration interface occlusally and gingivally. The highest microleakage score occlusally or gingivally was recorded and the results were analyzed statistically using SPSS version 13. The results of this study showed that the silorane-based posterior composite Filtek™ P90 showed significantly less microleakage than the methacrylate-based packable composite (Filtek™ P60) and the nano-filled composite (Filtek™ Supreme XT) when the tooth-restoration interface is located in enamel.
{"title":"Microleakage Evaluation of a Silorane-Based and Methacrylate-Based Packable and Nanofill Posterior Composites (in vitro comparative study)","authors":"Manhal A. Majeed","doi":"10.25130/tjds.2.1.4","DOIUrl":"https://doi.org/10.25130/tjds.2.1.4","url":null,"abstract":"This study compared in vitro the microleakage of a new low shrink silorane-based posterior composite (Filtek™ P90) and two methacrylate-based composites: a packable posterior composite (Filtek™ P60) and a nanofill composite (Filtek™ Supreme XT) through dye penetration test. Thirty sound human upper premolars were used in this study. Standardized class V cavities were prepared at the buccal surface of each tooth. The teeth were then divided into three groups of ten teeth each: (Group 1: restored with Filtek™ P90, Group 2: restored with Filtek™ P60, and Group 3: restored with Filtek™ Supreme XT). Each composite system was used according to the manufacturer's instructions with their corresponding adhesive systems. The teeth were then thermocycled, immersed in 1% methylene blue dye for 24 hours at room temperature, embedded in auto-polymerizing acrylic resin and sectioned longitudinally bucco-lingually. Microleakage was evaluated by assessing the linear dye penetration at the tooth/restoration interface occlusally and gingivally. The highest microleakage score occlusally or gingivally was recorded and the results were analyzed statistically using SPSS version 13. The results of this study showed that the silorane-based posterior composite Filtek™ P90 showed significantly less microleakage than the methacrylate-based packable composite (Filtek™ P60) and the nano-filled composite (Filtek™ Supreme XT) when the tooth-restoration interface is located in enamel.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"11 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139524495","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}
Introduction: laser sinter Cobalt Chromium metal replacing traditional casting processes of dental alloys for metal ceramic restorations, appropriate bonding of ceramic to metal is an important factor for long survival time. Twenty laser sinter cubic metal 10 mm for each sides was fabricated by software designing and CADCAM direct metal laser sintering technique. The twenty cubics were classified according to the type of metal to ceramic bonding agents into two groups (n=10), Ceram bond apply for group A and Crea alloy bond for group B. Samples fabricated using custom made silicon index was used to act as standardized mold for metal bond application and porcelain buildup. Instron with chisel indenter and special holding device were involve to measure the strength of bond for ceramic to laser sinter metal. The mean shear bond load of group A (688.8N) was significantly higher than that of group B (303.2N). Application of Ceram bond to metal laser sinter produces more bond strength when compare to usage of Crea bond material.
{"title":"Effect of Different Metal Bonding Agents on Shear Bond Strength of Ceramic to Direct Metal Laser Sintering","authors":"Mustafa N. Abdulghani","doi":"10.25130/tjds.5.2.3","DOIUrl":"https://doi.org/10.25130/tjds.5.2.3","url":null,"abstract":"Introduction: laser sinter Cobalt Chromium metal replacing traditional casting processes of dental alloys for metal ceramic restorations, appropriate bonding of ceramic to metal is an important factor for long survival time. Twenty laser sinter cubic metal 10 mm for each sides was fabricated by software designing and CADCAM direct metal laser sintering technique. The twenty cubics were classified according to the type of metal to ceramic bonding agents into two groups (n=10), Ceram bond apply for group A and Crea alloy bond for group B. Samples fabricated using custom made silicon index was used to act as standardized mold for metal bond application and porcelain buildup. Instron with chisel indenter and special holding device were involve to measure the strength of bond for ceramic to laser sinter metal. The mean shear bond load of group A (688.8N) was significantly higher than that of group B (303.2N). Application of Ceram bond to metal laser sinter produces more bond strength when compare to usage of Crea bond material.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"48 38","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139528099","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}
Dentist, dental technician and assistants are faced a several kinds of microorganisms during wor like bacteria, fungi and viruses .So, we can prevent cross contamination by using either chemica or mechanical disinfection. The aim of the research was to measure the effect of different types of chemical disinfection on the hardness of two types of denture base resin, heat activated acry and nylon (flexible). A total number of 80 denture resin specimens (40 specimens from hea activated acrylic and 40 specimens from flexible resin) were prepared. Each type of specim was subdivided into 4 groups. Three groups were divided according to the type of dentur disinfectants (1%sodium hypochlorite, 1% povidine/iodine, Kin solution) and the fourth whi considered as control group was immersed in distilled water. All specimens were immersed testing solution for 90 minutes at 370C. The hardness of the specimens before and af immersion was tested using Shore D machine. Our study showed that the mean value hardness test for poly methyl methacrylate higher than polyamide and there need aid non significant Contrast in the resistance of the surface to scratches and indentation between diver sorts of thermoplastic resin after using chemical disinfectant and denture cleansers w i comparison with control group for each type of denture base resin. The resistance to indentati of different types of denture base would not affected by short time immersion in chemica disinfectant.
{"title":"Impact of Sorts Disinfection and Cleansing Material on Hardness of Different Types of Denture Base Material","authors":"Reem Ahmed Shihab","doi":"10.25130/tjds.5.2.7","DOIUrl":"https://doi.org/10.25130/tjds.5.2.7","url":null,"abstract":"Dentist, dental technician and assistants are faced a several kinds of microorganisms during wor like bacteria, fungi and viruses .So, we can prevent cross contamination by using either chemica or mechanical disinfection. The aim of the research was to measure the effect of different types of chemical disinfection on the hardness of two types of denture base resin, heat activated acry and nylon (flexible). A total number of 80 denture resin specimens (40 specimens from hea activated acrylic and 40 specimens from flexible resin) were prepared. Each type of specim was subdivided into 4 groups. Three groups were divided according to the type of dentur disinfectants (1%sodium hypochlorite, 1% povidine/iodine, Kin solution) and the fourth whi considered as control group was immersed in distilled water. All specimens were immersed testing solution for 90 minutes at 370C. The hardness of the specimens before and af immersion was tested using Shore D machine. Our study showed that the mean value hardness test for poly methyl methacrylate higher than polyamide and there need aid non significant Contrast in the resistance of the surface to scratches and indentation between diver sorts of thermoplastic resin after using chemical disinfectant and denture cleansers w i comparison with control group for each type of denture base resin. The resistance to indentati of different types of denture base would not affected by short time immersion in chemica disinfectant.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"36 39","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139528593","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}
Bone morphogenetic protein-2 (BMP-2) has a significant function in the formation of cartilage and bones. Notably, dosing of only BMP-2 protein intravenously is ineffective. Persistent transportation of the stabilized BMP-2 through a carrier has been seen to be essential for enhancing the osteogenesis im pact of BMP-2. The current research built a new system of drug delivery by utilising cockle shell derived calcium carbonate nanoparticles (CaCO3NPs) and studied the efficacy of the delivery system on the recombinant human bone morphogenetic protein (rhBMP-2). rhBMP-2-CaCO3NPs nanoparticles were synthesised by means of a modest precipitation procedure along with mechanical grinding. Fourier-tran sform infrared spectroscopy, UV–Vis spectrophotometer, scanning electron microscope, X-ray powder diffraction, transmission electron microscope, and zeta potential were u tilised for characterising the conjugated rhBMP-2-CaCO3NPs . Cytotoxicity of rhBMP-2, CaCO3NPs and rhBMP-2-CaCO 3NPs was studied by utilising methylthiazol tetrazolium assay against fibroblast (Rat-1) cells in comparison to rhBMP-2 and CaCO3NPs. The outcomes signified bio-stability of CaCO3NPs and lower toxicity for Rat-1 cells. In summary, CaCO3NPs were prepared by a simp le precipitation process. The ensuing nanoparticles could competently entrap rhBMP-2 and generated stable rhBMP-2-CaCO3NPs. A sustained discharge of rhBMP-2 from t he CaCO3NPs was seen. CaCO3NPs loaded with r hBMP-2 demonstrated reasonable bio-compatibility. The outcomes indicated that CaCO3NPs may have significant ability as carrier of therapeutic proteins within bone tissue en gineering.
{"title":"Efficient Delivery of Recombinant Human Bone Morphogenetic Protein (Rhbmp-2) With Cockle Shell Derived Calcium Carbonate Nanoparticles (CaCO3NPs)","authors":"Ataa T. Ghazi, Hayder F. Saloom, Rana I. Mahmood","doi":"10.25130/tjds.11.2.8","DOIUrl":"https://doi.org/10.25130/tjds.11.2.8","url":null,"abstract":"Bone morphogenetic protein-2 (BMP-2) has a significant function in the formation of cartilage and bones. Notably, dosing of only BMP-2 protein intravenously is ineffective. Persistent transportation of the stabilized BMP-2 through a carrier has been seen to be essential for enhancing the osteogenesis im pact of BMP-2. The current research built a new system of drug delivery by utilising cockle shell derived calcium carbonate nanoparticles (CaCO3NPs) and studied the efficacy of the delivery system on the recombinant human bone morphogenetic protein (rhBMP-2). rhBMP-2-CaCO3NPs nanoparticles were synthesised by means of a modest precipitation procedure along with mechanical grinding. Fourier-tran sform infrared spectroscopy, UV–Vis spectrophotometer, scanning electron microscope, X-ray powder diffraction, transmission electron microscope, and zeta potential were u tilised for characterising the conjugated rhBMP-2-CaCO3NPs . Cytotoxicity of rhBMP-2, CaCO3NPs and rhBMP-2-CaCO 3NPs was studied by utilising methylthiazol tetrazolium assay against fibroblast (Rat-1) cells in comparison to rhBMP-2 and CaCO3NPs. The outcomes signified bio-stability of CaCO3NPs and lower toxicity for Rat-1 cells. In summary, CaCO3NPs were prepared by a simp le precipitation process. The ensuing nanoparticles could competently entrap rhBMP-2 and generated stable rhBMP-2-CaCO3NPs. A sustained discharge of rhBMP-2 from t he CaCO3NPs was seen. CaCO3NPs loaded with r hBMP-2 demonstrated reasonable bio-compatibility. The outcomes indicated that CaCO3NPs may have significant ability as carrier of therapeutic proteins within bone tissue en gineering.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139440186","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}
Marwah Hussein Abdulsattar, Sara Abdulbasit Turki, Zahraa Nazar Alwahab
This study aimed to evaluate the impact of surface treatment (polishing, polishing with diamond paste and glazing) on the Vickers microhardness of pressable ceramics IPS Emax porcelain in comparison with non-treated surface. Materials and Methods: Forty disc shaped samples of baseplate wax with 10 mm diameter and 2 mm thickness have been prepared. They were invested and lost wax technique was performed to fabricate the pressable ceramic. Following pressing, they were divided randomly into four groups (n=10): Group A: no surface treatment, Group B: glazing (paste, HT, Ivoclar,Vivadent, Germany) glazing (paste, HT, Ivoclar,Vivadent, Germany), Group C : polishing with burs (DIAPRO TWIST,EVE, GmbH, Germany) and diamond paste (All in one, RENFERT, GmbH, Germany), and Group D: polishing with burs (DIAPRO TWIST,EVE, GmbH, Germany). For all specimens, the Vickers hardness number (VHN) was determined using a digital tester. Vickers hardness was used in this analysis due to the small specimen size and multiple compositions. Each specimen was put on the device's stage, the Vickers indenter was then lowered slowly until it came into contact with the polished surface of the specimen. Results: The highest Vickers Hardness Number was for polishing with burs and diamond paste and polishing with burs, while the lowest Vickers Hardness Number was for control group. One-way ANOVA test showed a high significant difference at P < .000. LSD test reviled there was non-significant difference between polishing with burs and polishing with burs and diamond paste. Conclusions: Within the limitation of the present study, it can be concluded that, polishing can considered as an effective method as glazing to improve surface hardness of pressable ceramic, and polishing with or without diamond paste can be an effective method to improve surface hardness.
{"title":"Effect of Polishing Systems on Mechanical Properties of Emax Press Restorations","authors":"Marwah Hussein Abdulsattar, Sara Abdulbasit Turki, Zahraa Nazar Alwahab","doi":"10.25130/tjds.11.2.7","DOIUrl":"https://doi.org/10.25130/tjds.11.2.7","url":null,"abstract":"This study aimed to evaluate the impact of surface treatment (polishing, polishing with diamond paste and glazing) on the Vickers microhardness of pressable ceramics IPS Emax porcelain in comparison with non-treated surface. Materials and Methods: Forty disc shaped samples of baseplate wax with 10 mm diameter and 2 mm thickness have been prepared. They were invested and lost wax technique was performed to fabricate the pressable ceramic. Following pressing, they were divided randomly into four groups (n=10): Group A: no surface treatment, Group B: glazing (paste, HT, Ivoclar,Vivadent, Germany) glazing (paste, HT, Ivoclar,Vivadent, Germany), Group C : polishing with burs (DIAPRO TWIST,EVE, GmbH, Germany) and diamond paste (All in one, RENFERT, GmbH, Germany), and Group D: polishing with burs (DIAPRO TWIST,EVE, GmbH, Germany). For all specimens, the Vickers hardness number (VHN) was determined using a digital tester. Vickers hardness was used in this analysis due to the small specimen size and multiple compositions. Each specimen was put on the device's stage, the Vickers indenter was then lowered slowly until it came into contact with the polished surface of the specimen. Results: The highest Vickers Hardness Number was for polishing with burs and diamond paste and polishing with burs, while the lowest Vickers Hardness Number was for control group. One-way ANOVA test showed a high significant difference at P < .000. LSD test reviled there was non-significant difference between polishing with burs and polishing with burs and diamond paste. Conclusions: Within the limitation of the present study, it can be concluded that, polishing can considered as an effective method as glazing to improve surface hardness of pressable ceramic, and polishing with or without diamond paste can be an effective method to improve surface hardness.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"87 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139440516","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}
This research was to evaluate the effect of distilled water (D.W.), tea, coffee, and cola on flexural strength of PEEK CAD-CAM, 3D printing and heat cure acrylic resin denture base at different durations (6, 12and 24 days). Material used in this research are PEEK, 3D printing and Heat cure acrylic resin with dimension (64 × 10 × 3.3 ±0.2 mm, ISO 20795- 1:201320) for each tested material. Total number of samples are n= (195) samples, Control samples n=15, experimental samples n=180.The control samples were non immersed in beverage media. The experimental samples were immersed in beverage media (distilled water, tea, coffee, and cola) for evaluating the flexural strength at different time which are (6, 12 and 24 days), then all collecting data were statically analyzed by spss version 25, by means of Descriptive statistics, analysis of Variance (ANOVA) and Duncan multiple range tests at p ≤ 0.05. The beverage solutions had been non significantly decreased the flexural strength and this decreasing worst as the immer sion periods increased, the most decreasing in flexural strength o f PEEK denture base was achieved in 24 immersion days in cola (252.0960 MPa ±5.19825) followed by coffee (253.4360 MPa ± 6.60975) followed by tea(253.7780 MPa ± 6.44697) followed by distilled water (254.1420 MPa ±7.41318) as comparing with control(260.2420MPa ±5.08412), the most decreasing in flexur al strength of 3D printing denture base was achieved in 24 immersion days in cola (103.1680 MPa ±12.26532) followed by coffee (105.4360 MPa ±12.36951) followed by tea (10 7.4530MPa ±11.47399) followed by distilled water (109.1320 MPa ±11.66156) as comparing with control(119.7140 MPa ± 12.25421), the most decreasing in flexural strength of heat cure acrylic resin denture base was achieved in 24 immersion days in cola (118.5640MPa ±13.06764) follow ed by coffee (122.3640MPa ± 9.78213) followed by tea( 123.5600MPa ±14.05144) followed by distilled water (126.3620 MPa ± 11.35254) as comparing with control (134.6420 MPa ± 9.79330) at p ≤ 0.05. All beverage media had been negatively aff ected the flexural strength of all experimental materials and as t he immersion periods increased the affect became worst. The aggressive effect was in cola followed by coffee followed by tea and the least effect was in D.W. beverage media. The worst immersion period was 24 then 12 and 6 days. for all tests use but this affect was non significantly.
{"title":"Effect of Beverage Solutions on Flexural Strength of PEEK CAD –CAM, 3D Printing Denture Base and Heat Cure Acrylic Resin Denture Base Materials","authors":"Noor Muwafaq Fadhil, Nada Zuhair Mohammed","doi":"10.25130/tjds.11.2.5","DOIUrl":"https://doi.org/10.25130/tjds.11.2.5","url":null,"abstract":"This research was to evaluate the effect of distilled water (D.W.), tea, coffee, and cola on flexural strength of PEEK CAD-CAM, 3D printing and heat cure acrylic resin denture base at different durations (6, 12and 24 days). Material used in this research are PEEK, 3D printing and Heat cure acrylic resin with dimension (64 × 10 × 3.3 ±0.2 mm, ISO 20795- 1:201320) for each tested material. Total number of samples are n= (195) samples, Control samples n=15, experimental samples n=180.The control samples were non immersed in beverage media. The experimental samples were immersed in beverage media (distilled water, tea, coffee, and cola) for evaluating the flexural strength at different time which are (6, 12 and 24 days), then all collecting data were statically analyzed by spss version 25, by means of Descriptive statistics, analysis of Variance (ANOVA) and Duncan multiple range tests at p ≤ 0.05. The beverage solutions had been non significantly decreased the flexural strength and this decreasing worst as the immer sion periods increased, the most decreasing in flexural strength o f PEEK denture base was achieved in 24 immersion days in cola (252.0960 MPa ±5.19825) followed by coffee (253.4360 MPa ± 6.60975) followed by tea(253.7780 MPa ± 6.44697) followed by distilled water (254.1420 MPa ±7.41318) as comparing with control(260.2420MPa ±5.08412), the most decreasing in flexur al strength of 3D printing denture base was achieved in 24 immersion days in cola (103.1680 MPa ±12.26532) followed by coffee (105.4360 MPa ±12.36951) followed by tea (10 7.4530MPa ±11.47399) followed by distilled water (109.1320 MPa ±11.66156) as comparing with control(119.7140 MPa ± 12.25421), the most decreasing in flexural strength of heat cure acrylic resin denture base was achieved in 24 immersion days in cola (118.5640MPa ±13.06764) follow ed by coffee (122.3640MPa ± 9.78213) followed by tea( 123.5600MPa ±14.05144) followed by distilled water (126.3620 MPa ± 11.35254) as comparing with control (134.6420 MPa ± 9.79330) at p ≤ 0.05. All beverage media had been negatively aff ected the flexural strength of all experimental materials and as t he immersion periods increased the affect became worst. The aggressive effect was in cola followed by coffee followed by tea and the least effect was in D.W. beverage media. The worst immersion period was 24 then 12 and 6 days. for all tests use but this affect was non significantly.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"63 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139534665","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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