Journal of dentistry and dental medicine最新文献

{"title":"The Effect of Curing Time on the Degree of Conversion of Poly-acid Modifed Composite Resin (Compomer) �An In Vitro study","authors":"Fanar Turki A.Al-Jadwaa, Moataz Gh Al-shaekh Ali, A. Taqa","doi":"10.31021/jddm.20181118","DOIUrl":"https://doi.org/10.31021/jddm.20181118","url":null,"abstract":"Aims to evaluate the effect of light intensity on the degree of conversion of polyacidmodified composite resin. Materials and methods: Fourteen samples were prepared and divided randomly to four groups according to Light Intensity. Fourier Transform Infrared Spectrometer (FTIR) is used in order to measure the degree of conversion. Results and discussion: Analysis of variance (ANOVA) and Duncan multiple range test were used for analysis. The study showed that at 1mm depth the polyacid-modified composite resin has a difference in the degree of conversion at different intensities. As the light intensity increased, the degree of conversion measure was increased.","PeriodicalId":93308,"journal":{"name":"Journal of dentistry and dental medicine","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47657332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microbial Infection of Orthodontic Synthetic Intermaxillary Elastics in Differents Types of Manipulation: An In Vitro Study","authors":"Flvio de Mendona Copello, D. Alviano, M. M. Souza, A. Bolognese, Angela Rita Pontes Azevedo","doi":"10.31021/jddm.20181117","DOIUrl":"https://doi.org/10.31021/jddm.20181117","url":null,"abstract":"Background: Intermaxillary elastic is considered important sources of energy in orthodontic movement. However, the majority of this type of material, mainly those of Brazilian brands, is sold in packets containing 1000 units, which obliges the orthodontist or assistant to manipulate these, in order to separate them into a smaller quantity for each patient. The care taken by the working team is essential for preserving the integrity of the health of both the team and patients. Aim/objectives: the purpose of this study was to perform an in vitro evaluation of synthetic intermaxillary elastics from different manufacturers, to verify the presence of microorganisms at the time of opening the package and its application, by different forms of manipulation. Methods: 120 synthetic intermaxillary elastics were divided into four groups according to different trademarks and type of manipulation. These were incubated at 37 o C and evaluated after time intervals of 24 hours, 48 hours, 72 hours, 4 days, 7 days and 10 days. The cultures were analyzed by visual inspection and when the culture medium presented turbidity, the presence of contamination was considered. Findings/results: Bacterial contamination was only found in the groups that occurred hand manipulation of the materials. Discussion: The elastics tested in this study presented no evidence of microbial contamination before manipulation; manipulation of the elastics with the use of gloves and sterile forceps prevented contamination by microorganisms; the elastic manipulation with hands is not recommended.","PeriodicalId":93308,"journal":{"name":"Journal of dentistry and dental medicine","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49105093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"To Shake or Not to Shake: Can Bacterial Cross-contamination Occur from Handshaking in Healthcare Settings?","authors":"Vahid Mesgarzadeh, M. H. Motamedi, H. Hooshangi, M. Rezaei, H. Akhlagh, Z. Danial","doi":"10.31021/jddm.20181119","DOIUrl":"https://doi.org/10.31021/jddm.20181119","url":null,"abstract":"Bacterial Contamination Transferred Through Handshaking Transfer of bacteria through handshaking in the clinical setting is an issue of concern and warranting investigation. Handshaking may be a likely mode for transmission of microorganisms [1]. Transfer of pathogenic microorganisms in the clinical environment is important because healthcare professionals and students are at risk. Contamination from instruments that can become vectors of cross-infection [2,3] may harbor pathogens such as Streptococcus pneumoniae, Mycobacterium tuberculosis, Escherichia coli, Klebsiella pneumoniae, Legionella pneumophila and Pseudomonas aeruginosa which have been implicated in crosscontamination [4]. Sklansky [5] proposed banning the handshake from the health care setting. Handshaking a cultural tradition that has evolved over centuries as a general gesture of peace [6] may serve as a route for transfer of microorganisms via the hands of healthcare workers, and students. Survivals of bacteria on the hands vary among pathogens. Studies done in the environmental setting show that handshaking can actually transfer pathogens [7]. Even spores of Clostridium difficile have been shown to be transferred via handshaking [5] as have Enterobacteriaceae, Pseudomonas and Staphylococcus aureus [8]. Bacterial contamination in the ward has been shown to be less with “fist bumping” as compared with handshaking. The WHO states hand-transmitted bacteria are still abundant in hospitals [9]. We recently undertook a study wherein we initially swabbed 76 students upon entry to the ward and again after shaking hands with their classmates and colleagues. After taking samples and culturing we observed Staphylococcus epidermidis, Micrococcus and Peptostreptococcus in 100, 39.5 and 32.9% of the subjects, respectively. Staphylococcus aureus, Bacillus Spores, Actinomyces and Klebsiella were detected in 30.3, 23.7, 13.15 and 13.15% of the students, respectively. Transfer of bacterial contamination after handshaking significantly increased for Staphylococcus epidermidis from 93.4 to 97% (P < 0.001). Bacillus anthracis and Micrococcus increased from 39.5 to 89.5% and 32.9 to 83.9%, respectively (P < 0.001). Bacterial contamination for Peptostreptococcus increased from 30.3 to 80.3%, Staphylococcus aureus 23.7 to 40.8%, Spore Bacillus 13.15 to 22.4%, Klebsiella 13.15 to 22.4 and Actinomyces 13.15 to 18.4%. These results suggest that handshaking can indeed be a mode of microbial transfer and bacterial cross-contamination which may be dangerous especially in immunocompromised subjects.","PeriodicalId":93308,"journal":{"name":"Journal of dentistry and dental medicine","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43493233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The correlation between the DMFT of the 12-year-old children and the concentration of fluorine in drinking water from the Southeast region of the Republic of Macedonia","authors":"Ambarkova Vesna, Ambarkov Jovan","doi":"10.31021/JDDM.20181116","DOIUrl":"https://doi.org/10.31021/JDDM.20181116","url":null,"abstract":"The aim of this study is to determine the correlation between the DMFT index of 12-yearold children from the Southeast region and the concentration of fluorine in drinking water from the populated areas where children live. Material and methods: In the examination, 129 children were enrolled, out of 2 central and 2 regional primary schools, at which the DMFT index was determined. The children live in 2 different cities and 2 different villages. Four water samples were taken from the examined area to determine the fluorine concentration by using the electrochemical method using the pH / ISE meter-Thermo-Orion with a special F-electrode (Thermo Orion Ion Plus Fluoride Electrode) at the Institute for public health. Spearman’s method was used to determine the correlation between the specified variables. Results: The total number of children in the examined sample was 129, out of which 70 (54.3%) were male and 59(45.7%) were female. The average DMFT index in this group of children was 1.94 with a standard deviation of ± 2.5. Maximum concentration of fluorine in drinking water of 1.36 ppmF was determined in the village Bansko, and 0.36 ppmF in the village Murtino, while the minimum (0.08 ppmF) in the city Strumica. Correlation of the DMFT index in 12-year old children from the Southeast region and the concentration of fluorine in the drinking water has a negative, indirect correlation, with the value of the coefficient r = 0.1655. Conclusion: The correlation between the DMFT index and the concentration of drinking water is a negative, indirect correlation and statistically, this correlation is highly significant (p < 0.05).","PeriodicalId":93308,"journal":{"name":"Journal of dentistry and dental medicine","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44655555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ISW for the Treatment of an Adult Facial Asymmetry Skeletal Class III Case","authors":"Chun-shuo Huang, Jian-Hong Yu","doi":"10.31021/JDDM.20181115","DOIUrl":"https://doi.org/10.31021/JDDM.20181115","url":null,"abstract":"In this case, ISW (improved superelastic Ti–Ni alloy wire, commonly called a lowhysteresis wire, developed by Tokyo Medical and Dental University) was employed in the treatment of an adult facial asymmetry skeletal Class III case without extraction and surgery. A 23-year-old man came to our clinic with a chief complaint of poor bite and for esthetic consultation. A clinical examination revealed a bilateral Class III molar relationship with anterior crossbite and mild crowding with a lower midline deviated to the right. Active treatment included establishment of a crossbite arch in the upper arch by using an ISW without extraction and removal of the lower-right fixed bridge prosthesis. Using ISW and adequate Class III intermaxillary elastic traction meant that the malocclusion was corrected with a minimal orthodontic approach. Treatment was completed within 19 months, and a stable occlusion was achieved after the active treatment.","PeriodicalId":93308,"journal":{"name":"Journal of dentistry and dental medicine","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49209571","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}