Journal of International Dental and Medical Research
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Ectodermal Dysplasia Group-Turkey,正常發行
選擇卷期
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The management of a poly trauma patient requires a collaborated, multidisciplinary approach in order to get a favorable patient outcome. Knowledge of type of problems these patients encounter is critical to ensure that life threatening problems are timely recognized and treated and minor injuries are not ignored. The article highlights the management of a poly trauma patient using ATLS protocol and also throws light on the area of specific involvement of the medical team. ATLS protocol although regarded as a gold standard for the management of a trauma patient, but strict adherence to this protocol may not be always possible in case of a patient with facial trauma. An Oral and Maxillofacial surgeon needs to be aware of these probable problems and should be aware of how to manage them if the need arises.
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Temporomandibular disorder (TMD) is a term that encompasses pain and dysfunction of masticatory muscles, temporomandibular joint (TMJ), and all associated tissues. The most common form of TMD is internal derangement. Patients normally undergo conservative treatments followed by a surgical procedure if necessary. Arthrocentesis is a minimal invasive and highly effective treatment that is frequently used to treat internal derangement. This technique aims to wash inflammatory cytokines, release intraarticular pressure, promote disc reposition and break adhesion of TMJ. It is a simple, feasible, inexpensive procedure and has less complications. The objective of this paper is to review current evidences of TMJ arthrocentesis including objectives, indications, techniques and procedures, complications, success rate as well as prognosis.
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Effect of Different Light-Curing Sources on Diametral Tensile Strength of Bulk Fill Composite Resins
There are two common sources of light curing used to polymerize composite resins, the LED (Light Emitted Diode) and the QTH (Quartz Tungsten Halogen). This study aimed to evaluate the effect of using different light curing sources on diametral tensile strength of bulk fill composite resins. Three commercial bulk fill composite resins, Tetric N-Ceram Bulk Fill (Ivoclar-Vivadent, Liechtenstein, Germany), Beautifil-Bulk Restorative® (Shofu, Japan), and Filtek^(TM) Bulk-Fill (3MESPE, USA) were used to make disk specimens (6 mm in diameter, 3 mm in thickness) divided into two different polymerized groups (n=10), with LED for 20s and QTH for 40s light curing sources. Diametral tensile strength was tested using a Universal Mechanical Testing Machine (Shimadzu, Japan). Data were analyzed using one way ANOVA and Bonferonni post hoc tests. The results showed that diametral tensile strength mean value of all bulk fill composite resins polymerized using LED source were higher than QTH. There was no statistically difference between the group polymerized using LED and QTH (p ≥ 0.05), except in Filtek^(TM) Bulk-Fill group (p = 0.012). It can be concluded that different light-curing sources can influence the polimerization effect of Bulk-Fill composite resin in their diametral tensil strength properties.
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In order to improve the light cured denture base material mechanical and physical properties many studies have been conducted by adding different forms and types of filler with various particles size, the aims of the present study was to improve the mechanical properties of light cured denture base material by adding polyester micro-filler particles Two hundred fifty samples were prepared and subdivided according to the percentage of polyester micro-filler particle powder added (0% (Control), 0.5%, 1%, 1.5%, 2%). The mechanical properties tested were Transverse strength, Impact strength, Tensile strength, Surface hardness and Surface roughness (n=10). XRD, EDS, FTIR spectrum and SEM were used to analyze micro-filler Particles distribution and identification of elements in the matrix. The statistical analysis conducted by running one-way ANOVA Table with LSD to show the least significant differences among the groups at P value＜0.05. The results show that the highest mean values for transverse strength, tensile strength and surface hardness test found in 2% by weight polyester micro-fillers particles while there were no significant difference reached among all groups in both impact strength and surface roughness when compared with the control group, Within the limitation of this study, the addition of 2% polyester micro-fillers to Light cured denture base material led to improvement in transverse and tensile strength significantly while no significant improvement in impact strength, hardness and changed in surface roughness was noticed.
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The prime aim of the study was to establish sex prediction assessment via mandibular canine index (MCI) and logistic regression in Pakistani population thorough a digital model study. The selected sample consisted of 128 subjects with the ages ranged from 18 to 24 years. The mesiodistal and buccolingual tooth size were measured via scanned digital dental models. Male's measured canine width and MCI is larger than female. SMCI anticipated erroneously 48% male and 51% female. Sex assessment via binary logistic regression (BLR) for inclusion of two (MD 43 and LICW) variables showed the overall percentage of prediction were 66.4%, and 64.1% and 68.8% for male and female respectively. BLR for inclusion of more tooth size (MD and BL widths of maxillary and mandibular right side) variables. The overall percentages of prediction were 75.4%, with 80% and 71% for male and female respectively. The Rao index is not a reliable way for the sex identification in Pakistani population. BLR sex prediction models is applicable for Pakistani population.
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The present study aimed to investigate the effect of the Aquilaria crassna extract (AE) on osteogenic activity including cell viability, cell proliferation, cell attachment and osteogenic differentiation of osteoblast like cells (MC3T3-E1). These were evaluated in term of cell viability, cell proliferation and cell attachment by MTT assays. While the methods of alkaline phosphatase (ALP) staining and activity kits, quantitative real-time PCR of osteogenic gene expression and Alizarin Red-S staining were performed to evaluate the effect of the AE on osteogenic differentiation. The results showed that the concentration of AE at 10, 25 and 50 μg/ml had no cytotoxicity. The AE (50 μg/ml) effectively enhanced cell proliferation at 24 h and increased cell attachment at 4 h and 24 h in MC3T3-E1 cells. The AE (50 μg/ml) effectively promoted osteogenic differentiation of MC3T3-E1 cells by increasing an ALP activity, an expression of osteogenic gene markers (collagen type I, ALP, bone sialoprotein and osteocalcin) and a mineral deposition. In conclusion, the data presented in this study showed a potential of Aquilaria crassna extract to improve initial cell attachment and proliferation, and to stimulate osteogenic differentiation in MC3T3-E1 cells.
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Periodontal disease is a major disease of the oral cavity with a high prevalence, especially in a number of developing countries. Analyze the relationship of fluorine concentration in drinking water with gingivitis periodontal disorder (Case study in Subdistrict of Tempe, Sengkang City, Wajo District). The type and design of the research is explorative / cross-sectional research. Selection of research subjects was conducted by cluster sampling method first to determine the sample population of the sample to be sampled in Tempe Subdistrict. Data analysis was done by univariate, bivariate and advance analysis (ROC to determine cut off risk of fluorine concentration and Layer analysis to determine the magnitude of interaction variable) using the value of α 5%. The fluorine concentration was set at 0.020 through ROC calculations. Different fluorine concentration results shown in the analyzes performed on cooking water consumption showed a p value of 0.067, which means consumption of high fluorine concentrations evenly distributed across all sources of cooked water. The condition of gingivitis is relatively different based on age classification with most patients in stratum age＞ 40 years. However, a total significant relationship was found between fluorine concentration and gingivitis incidence (p = 0.04). Statistical analysis also showed a positive relationship between the OHIS condition of respondents and the incidence of gingivitis indicated by index gingivitis data. Interaction of severe OHI-S condition variables with high fluorine concentrations resulted in severe gingivitis of 43.1%. In high and medium fluorine stratum concentrations, the effect of OHIS is significant on gingivitis. Comparison of the interaction of two risk factors versus one risk factor shows comparison. There was a correlation between fluorine concentration and gingivitis, found an interaction between fluorine concentration with OHI-S to gingivitis effect and also found Cut off Point for fluor of 0.02 ppm.
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Dry socket is one of the most common post-operative complications following extraction of permanent teeth. The aetiology of dry socket is a subject of debate; it is probably multifactorial. However, its pathogenesis remains unclear. The aim of the present study was to evaluate the prevalence of dry socket following extraction of permanent teeth at Dental Polyclinic of Kulliyyah (Faculty) of Dentistry, International Islamic University Malaysia. Retrospective reviews of records of 3,452 extractions of permanent teeth for various reasons from June 2009 to July 2012, were studied. Information regarding biography of the patient, indications for extraction, extraction site (upper or lower arch), extraction technique and procedure were retrieved and analysed. There were 3,452 dental extractions carried out within the study period. The overall prevalence of dry socket was 1.13%. The prevalence of dry socket with regard to gender was 1.3% in males, and 1% in females. The peak prevalence (2.24%) was in the group of patients aged below 20 years. The prevalence of dry socket cases recorded from surgical removal of impacted teeth group was 5.8%. Data evaluation based on site of extraction showed that the prevalence in the upper jaw was less (0.98%) than that in the lower jaw (1.26%). Following surgical extractions, the prevalence of dry socket was 6.88%, while in simple extraction, the prevalence was 0.77%. These results strongly suggest that the aetiology of dry socket is multifactorial, and that the healing potential of the patient ultimately determines the severity and duration of the condition. The incidence of dry socket was higher in male patients, age group of 21 - 30 years, extractions due to caries, extraction of lower teeth, and in surgical extractions.
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Hydroxyapatite Gypsum Puger (HAGP) used as a graft material is usually produced in the form of a porous scaffold that could serve of tissue engineering so graft materials have to be fully degradable. Biodegradation is essential as it allows for the space to be formed into bone and also blood vessel tissue could grow. The aim of this study is to analyze the characterization and degradation of HAGP freeze dried scaffold as a graft material for preservation of alveolar bone sockets. The HAGP scaffold was made by mixing gelatin liquids using a sublimation/freeze dried system. Then, it was formed to a particle size of 150 to 355 μm. The structural properties and morphology of HAGP were characterized by X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM) and then compared with gold standard from Hydroxyapatite Bovine (HAB). The release of calcium (Ca) was tested using an in vitro degradation test-the AAS test and phosphorus release (P) was examined using a UV/Vis Spectrophotometer at days 1, 3, 7, 14 and 28. The characterization of Freeze dried HAGP scaffold with XRD showed 100% of hydroxyapatite phase. The SEM photos showed many pores on the scaffold with an average size of 3 μm, therefore, the pattern was similar to the HAB scaffold (gold standard). The degradation process of the Freeze dried HAGP scaffold slowly occurs which could affect the proliferation and the activity of the cells, thus it enters and grows into the scaffold to fabricate bone tissue.
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Hybrid layer can be described as the resin impregnated demineralized dentin layer. It comprises of the adhesive resin and the collagen fibrils that serve as scaffold for resin infiltration. Degradation of the hybrid layer is one of the major investigated topics in the restorative dentistry. It occurs through the hydrolysis of adhesive resin and the breakdown of collagen fibrils by endogenous proteases especially matrix metalloproteinases (MMPs). Hydrolysis occurs when the water acts as medium for chemical bonds breakdown especially methacrylate based resin containing ester bond that is vulnerable for this process. MMPs are embedded in the dentin during tooth development. These enzymes are activated by acid during dentin demineralization of etch-and-rinse and self-etch adhesive system. Since adhesive resin infiltration is often incomplete, denuded collagen fibrils associated with water can be enzymatically digested, eventually contributing to the hybrid layer deterioration. This review describes the mechanism of hybrid layer degradation and the potential strategies to slow down this process.