ISRN dentistry最新文献_第2页

In vitro cytotoxicity evaluation of four vital pulp therapy materials on l929 fibroblasts. 四种重要牙髓治疗材料对1929年成纤维细胞的体外细胞毒性评价。

ISRN dentistry Pub Date : 2014-03-03 eCollection Date: 2014-01-01 DOI: 10.1155/2014/191068

Aniket S Wadajkar, Chul Ahn, Kytai T Nguyen, Qiang Zhu, Takashi Komabayashi

{"title":"In vitro cytotoxicity evaluation of four vital pulp therapy materials on l929 fibroblasts.","authors":"Aniket S Wadajkar, Chul Ahn, Kytai T Nguyen, Qiang Zhu, Takashi Komabayashi","doi":"10.1155/2014/191068","DOIUrl":"https://doi.org/10.1155/2014/191068","url":null,"abstract":"The aim of this study was to evaluate cytotoxicity of direct pulp capping materials such as Dycal, Life, ProRoot MTA, and Super-Bond C&B on L929 fibroblasts. Freshly mixed or set materials were prepared and eluted by incubation with cell culture medium for working time period (fresh) or for 6 hours (set). The cells were exposed to media containing elutes for 24 hours, after which the cell survival was evaluated by MTS assays. In freshly mixed materials, average ± standard deviation % cell viabilities were 40.2 ± 14.0%, 43.7 ± 16.0%, 72.9 ± 12.7%, and 66.0 ± 13.6% for Dycal, Life, ProRoot MTA, and Super-Bond C&B, respectively. There was no statistical difference in cell viabilities among material groups, whereas in set materials, the cell viabilities were 48.7 ± 14.8%, 37.2 ± 10.6%, 46.7 ± 15.2%, and 100 ± 21.9% for Dycal, Life, ProRoot MTA, and Super-Bond C&B, respectively. Super-Bond C&B showed more cell viabilities than the other three material groups (P < 0.05). The four vital pulp therapy materials had similar cytotoxicity when the materials were fresh. Super-Bond C&B was less cytotoxic than Dycal, Life, and ProRoot MTA after the materials were set, which suggests the use of SB-C&B in future in vivo clinical investigations. ","PeriodicalId":89396,"journal":{"name":"ISRN dentistry","volume":"2014 ","pages":"191068"},"PeriodicalIF":0.0,"publicationDate":"2014-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2014/191068","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32255126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Current state of topical antimicrobial therapy in management of early childhood caries. 儿童早期龋齿局部抗菌治疗的现状。

ISRN dentistry Pub Date : 2014-02-19 eCollection Date: 2014-01-01 DOI: 10.1155/2014/762458

Jayabaarathi Jayabal, Ramakrishnan Mahesh

引用次数: 10

Salivary diagnostics: a brief review. 唾液诊断:简要回顾。

ISRN dentistry Pub Date : 2014-01-29 eCollection Date: 2014-01-01 DOI: 10.1155/2014/158786

Narasimhan Malathi, Sabesan Mythili, Hannah R Vasanthi

引用次数: 124

The consequences of tongue piercing on oral and periodontal tissues. 舌穿孔对口腔和牙周组织的影响。

ISRN dentistry Pub Date : 2014-01-29 eCollection Date: 2014-01-01 DOI: 10.1155/2014/876510

Ioannis Plastargias, Dimitra Sakellari

引用次数: 0

The prevalence of tonsilloliths and other soft tissue calcifications in patients attending oral and maxillofacial radiology clinic of the university of iowa. 爱荷华大学口腔颌面放射学门诊患者扁桃体结石和其他软组织钙化的患病率。

ISRN dentistry Pub Date : 2014-01-22 eCollection Date: 2014-01-01 DOI: 10.1155/2014/839635

Babatunde Olamide Bamgbose, Axel Ruprecht, John Hellstein, Sherry Timmons, Fang Qian

{"title":"The prevalence of tonsilloliths and other soft tissue calcifications in patients attending oral and maxillofacial radiology clinic of the university of iowa.","authors":"Babatunde Olamide Bamgbose, Axel Ruprecht, John Hellstein, Sherry Timmons, Fang Qian","doi":"10.1155/2014/839635","DOIUrl":"https://doi.org/10.1155/2014/839635","url":null,"abstract":"Objective. The purpose of this study was to determine the prevalence of tonsiliths in patients attending the oral and maxillofacial radiology clinic of The University of Iowa and to determine if there is any correlation between the presence of tonsiliths and the presence of stones in other body tissues, ducts, or organs. Study Design. This was a two-part study. The first part was a prevalence study whereas the second was a matched pair case-control study. The matched pair case-control study commenced after the prevalence study was concluded. No new or unusual radiographs were made in this study. The study only reviewed radiographs that were made for clinical purposes. Results. A total of 1524 pantomographs were reviewed and 124 subjects (53 males and 71 females) aged 9 years and 2 months to 87 years (mean age 52.6 years) were included for data analysis. Thirty-eight subjects had single tonsiliths whereas 86 subjects had multiple tonsiliths. The prevalence of tonsiliths in the study population was 8.14%. A total of 20 subjects were included in the second part of the study, comprising 10 each for matched pair case-control groups. The observations did not indicate any correlation between the presence of tonsiliths and the presence of stones in other body tissues, ducts, or organs. Conclusion. The prevalence of tonsiliths in our study population was 8.14%. The observations in our study do not support any correlations between tonsiliths and calcifications in other body tissues, organs, or ducts. ","PeriodicalId":89396,"journal":{"name":"ISRN dentistry","volume":"2014 ","pages":"839635"},"PeriodicalIF":0.0,"publicationDate":"2014-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2014/839635","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32168832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 24

Role of sugar and sugar substitutes in dental caries: a review. 糖和糖替代品在龋齿中的作用：综述。

ISRN dentistry Pub Date : 2013-12-29 eCollection Date: 2013-01-01 DOI: 10.1155/2013/519421

Prahlad Gupta, Nidhi Gupta, Atish Prakash Pawar, Smita Shrishail Birajdar, Amanpreet Singh Natt, Harkanwal Preet Singh

引用次数: 0

Force transfer and stress distribution in an implant-supported overdenture retained with a hader bar attachment: a finite element analysis. 硬杆附着体种植覆盖义齿的力传递和应力分布:有限元分析。

ISRN dentistry Pub Date : 2013-12-26 DOI: 10.1155/2013/369147

Preeti Satheesh Kumar, Kumar K S Satheesh, Jins John, Geetha Patil, Ruchi Patel

{"title":"Force transfer and stress distribution in an implant-supported overdenture retained with a hader bar attachment: a finite element analysis.","authors":"Preeti Satheesh Kumar, Kumar K S Satheesh, Jins John, Geetha Patil, Ruchi Patel","doi":"10.1155/2013/369147","DOIUrl":"https://doi.org/10.1155/2013/369147","url":null,"abstract":"Background and Objectives. A key factor for the long-term function of a dental implant is the manner in which stresses are transferred to the surrounding bone. The effect of adding a stiffener to the tissue side of the Hader bar helps to reduce the transmission of the stresses to the alveolar bone. But the ideal thickness of the stiffener to be attached to the bar is a subject of much debate. This study aims to analyze the force transfer and stress distribution of an implant-supported overdenture with a Hader bar attachment. The stiffener of the bar attachments was varied and the stress distribution to the bone around the implant was studied. Methods. A CT scan of edentulous mandible was used and three models with 1, 2, and 3 mm thick stiffeners were created and subjected to loads of emulating the masticatory forces. These different models were analyzed by the Finite Element Software (Ansys, Version 8.0) using von Mises stress analysis. Results. The results showed that the maximum stress concentration was seen in the neck of the implant for models A and B. In model C the maximum stress concentration was in the bar attachment making it the model with the best stress distribution, as far as implant failures are concerned. Conclusion. The implant with Hader bar attachment with a 3 mm stiffener is the best in terms of stress distribution, where the stress is concentrated at the bar and stiffener regions. ","PeriodicalId":89396,"journal":{"name":"ISRN dentistry","volume":"2013 ","pages":"369147"},"PeriodicalIF":0.0,"publicationDate":"2013-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/369147","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32058960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Feeding practices and early childhood caries: a cross-sectional study of preschool children in kanpur district, India. 喂养方式与幼儿龋齿：对印度坎普尔地区学龄前儿童的横断面研究。

ISRN dentistry Pub Date : 2013-12-05 eCollection Date: 2013-01-01 DOI: 10.1155/2013/275193

Santhebachalli Prakasha Shrutha, Grandim Balarama Gupta Vinit, Kolli Yada Giri, Sarwar Alam

{"title":"Feeding practices and early childhood caries: a cross-sectional study of preschool children in kanpur district, India.","authors":"Santhebachalli Prakasha Shrutha, Grandim Balarama Gupta Vinit, Kolli Yada Giri, Sarwar Alam","doi":"10.1155/2013/275193","DOIUrl":"10.1155/2013/275193","url":null,"abstract":"Background. Early childhood caries (ECC) is a public health problem due to its impact on children's health, development, and wellbeing. The objective of this study was to assess the caries experience in 3-5-year-old children and to evaluate the relationship with their mothers' practices regarding feeding and oral hygiene habits in Kanpur. Method. A cross-sectional survey was undertaken on 2000 (974 boys and 1026 girls) children aged 3-5 years from a random sample of preschools in Kanpur district, India. Dental caries experience was recorded using WHO criteria. A pretested questionnaire with 9 questions was used for collecting information regarding mothers' practices regarding feeding and oral hygiene practices. Chi-square test (χ (2)) and Student's t-test were used for statistical analysis. Results. The prevalence of ECC was 48% with mean dmft of 2.03 ± 2.99. Boys (57%) were affected more than girls (43%) which was found to be statistically significant (P < 0.05). Caries prevalence was high and statistically significant (P < 0.05) among those who were breast fed for longer duration, during nighttime, those falling asleep with bottle, and those fed with additional sugar in milk. Conclusion. Determining the role of feeding practices on early childhood caries can help in the development of appropriate oral health promotion strategies. ","PeriodicalId":89396,"journal":{"name":"ISRN dentistry","volume":"2013 ","pages":"275193"},"PeriodicalIF":0.0,"publicationDate":"2013-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3870076/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31994861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laser Doppler Blood-Flow Signals from Human Teeth during an Alignment and Leveling Movement Using a Superelastic Archwire. 激光多普勒血流信号在人类牙齿对准和水平运动中使用超弹性弓线。

ISRN dentistry Pub Date : 2013-09-19 eCollection Date: 2013-01-01 DOI: 10.1155/2013/102816

Alvaro Wagner Rodrigues Salles, Adriana Mirian Cotrim Salles, Gessé Eduardo Calvo Nogueira

引用次数: 11

Dental enamel development: proteinases and their enamel matrix substrates. 牙釉质发育：蛋白酶及其釉质基质底物。

ISRN dentistry Pub Date : 2013-09-16 DOI: 10.1155/2013/684607

John D Bartlett

{"title":"Dental enamel development: proteinases and their enamel matrix substrates.","authors":"John D Bartlett","doi":"10.1155/2013/684607","DOIUrl":"10.1155/2013/684607","url":null,"abstract":"This review focuses on recent discoveries and delves in detail about what is known about each of the proteins (amelogenin, ameloblastin, and enamelin) and proteinases (matrix metalloproteinase-20 and kallikrein-related peptidase-4) that are secreted into the enamel matrix. After an overview of enamel development, this review focuses on these enamel proteins by describing their nomenclature, tissue expression, functions, proteinase activation, and proteinase substrate specificity. These proteins and their respective null mice and human mutations are also evaluated to shed light on the mechanisms that cause nonsyndromic enamel malformations termed amelogenesis imperfecta. Pertinent controversies are addressed. For example, do any of these proteins have a critical function in addition to their role in enamel development? Does amelogenin initiate crystallite growth, does it inhibit crystallite growth in width and thickness, or does it do neither? Detailed examination of the null mouse literature provides unmistakable clues and/or answers to these questions, and this data is thoroughly analyzed. Striking conclusions from this analysis reveal that widely held paradigms of enamel formation are inadequate. The final section of this review weaves the recent data into a plausible new mechanism by which these enamel matrix proteins support and promote enamel development. ","PeriodicalId":89396,"journal":{"name":"ISRN dentistry","volume":" ","pages":"684607"},"PeriodicalIF":0.0,"publicationDate":"2013-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3789414/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40265107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0