ISRN dentistry最新文献_第8页

Assessment of various factors for feasibility of fixed cantilever bridge: a review study. 固定悬臂桥可行性的各种因素评估综述。

ISRN dentistry Pub Date : 2012-01-01 Epub Date: 2012-03-01 DOI: 10.5402/2012/259891

Ashu Sharma, G R Rahul, Soorya T Poduval, Karunakar Shetty

{"title":"Assessment of various factors for feasibility of fixed cantilever bridge: a review study.","authors":"Ashu Sharma, G R Rahul, Soorya T Poduval, Karunakar Shetty","doi":"10.5402/2012/259891","DOIUrl":"https://doi.org/10.5402/2012/259891","url":null,"abstract":"Cantilever fixed partial dentures are defined as having one or more abutments at one end of the prosthesis while the other end is unsupported. Much controversy without documentary evidence has surrounded this prosthesis. Despite negative arguments, the cantilever prosthesis has been used extensively by the clinicians. If used nonjudiciously without following proper guidelines these might lead to some complications. Although complications may be an indication that clinical failure has occurred, this is not typically the case. It is also possible that complications may reflect substandard care. Apart from the substandard care, the unique arrangement of the abutments and pontic also accounts for the prime disadvantage: the creation of a class I lever system. When the cantilevered pontic is placed under occlusal function, forces are placed on the abutments. There are various criteria and factors necessary for a successful cantilever fixed partial denture (FPD). The purpose of this paper is to discuss briefly various factors involved in the planning of a cantilever fixed partial denture.","PeriodicalId":89396,"journal":{"name":"ISRN dentistry","volume":"2012 ","pages":"259891"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5402/2012/259891","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30539478","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: 20

Radiopacity evaluation of contemporary luting cements by digitization of images. 数字化影像评价当代骨水泥的透光度。

ISRN dentistry Pub Date : 2012-01-01 Epub Date: 2012-09-13 DOI: 10.5402/2012/704246

José Maurício Dos Santos Nunes Reis, Erica Gouveia Jorge, João Gustavo Rabelo Ribeiro, Ligia Antunes Pereira Pinelli, Filipe de Oliveira Abi-Rached, Mário Tanomaru-Filho

{"title":"Radiopacity evaluation of contemporary luting cements by digitization of images.","authors":"José Maurício Dos Santos Nunes Reis, Erica Gouveia Jorge, João Gustavo Rabelo Ribeiro, Ligia Antunes Pereira Pinelli, Filipe de Oliveira Abi-Rached, Mário Tanomaru-Filho","doi":"10.5402/2012/704246","DOIUrl":"https://doi.org/10.5402/2012/704246","url":null,"abstract":"Objective. The aim of this study was to evaluate the radiopacity of two conventional cements (Zinc Cement and Ketac Cem Easymix), one resin-modified glass ionomer cement (RelyX Luting 2) and six resin cements (Multilink, Bistite II DC, RelyX ARC, Fill Magic Dual Cement, Enforce and Panavia F) by digitization of images. Methods. Five disc-shaped specimens (10 × 1.0 mm) were made for each material, according to ISO 4049. After setting of the cements, radiographs were made using occlusal films and a graduated aluminum stepwedge varying from 1.0 to 16 mm in thickness. The radiographs were digitized, and the radiopacity of the cements was compared with the aluminum stepwedge using the software VIXWIN-2000. Data (mmAl) were submitted to one-way ANOVA and Tukey's test (α = 0.05). Results. The Zinc Cement was the most radiopaque material tested (P < 0.05). The resin cements presented higher radiopacity (P < 0.05) than the conventional (Ketac Cem Easymix) or resin-modified glass ionomer (RelyX Luting 2) cements, except for the Fill Magic Dual Cement and Enforce. The Multilink presented the highest radiopacity (P < 0.05) among the resin cements. Conclusion. The glass ionomer-based cements (Ketac Cem Easymix and RelyX Luting 2) and the resin cements (Fill Magic Dual Cement and Enforce) showed lower radiopacity values than the minimum recommended by the ISO standard.","PeriodicalId":89396,"journal":{"name":"ISRN dentistry","volume":"2012 ","pages":"704246"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3449120/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30930829","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: 9

Tissue reactions to various suture materials used in oral surgical interventions. 口腔外科手术中对各种缝合材料的组织反应。

ISRN dentistry Pub Date : 2012-01-01 Epub Date: 2012-05-08 DOI: 10.5402/2012/762095

Fawad Javed, Mansour Al-Askar, Khalid Almas, Georgios E Romanos, Khalid Al-Hezaimi

{"title":"Tissue reactions to various suture materials used in oral surgical interventions.","authors":"Fawad Javed, Mansour Al-Askar, Khalid Almas, Georgios E Romanos, Khalid Al-Hezaimi","doi":"10.5402/2012/762095","DOIUrl":"https://doi.org/10.5402/2012/762095","url":null,"abstract":"A variety of suture materials are available for primary wound closure following oral surgical procedures. The aim was to review the tissue reactions to the various suture materials used in oral surgical interventions. Databases were searched using the following keywords: cotton, nylon, polyglecaprone 25, polytetrafluoroethylene (ePTFE), Polyglactin 910, polyglycolic acid (PGA), polylactic acid, silk, surgery, suture, and tissue reaction. Articles published only in English language were included. Seventeen studies were included. Two studies reported that polyglecaprone 25 had positive effects on wound-healing as compared to silk. Six studies reported that silk elicits more intense tissue inflammatory response and delayed wound healing as compared to other suture materials (including ePTFE, polyglecaprone-25, PGA, and nylon). Polyglactin 910 sutures were associated with the development of stitch abscess in one clinical study. Eight studies reported that tissue reactions are minimal with nylon sutures. Tissue reactions to suture materials used for oral surgical interventions may vary depending on the surface properties and bacterial adherence properties of the material.","PeriodicalId":89396,"journal":{"name":"ISRN dentistry","volume":"2012 ","pages":"762095"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5402/2012/762095","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30652937","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: 75

Marginal sealing durability of two contemporary self-etch adhesives. 两种当代自蚀刻粘合剂的边缘密封耐久性。

ISRN dentistry Pub Date : 2012-01-01 Epub Date: 2012-04-29 DOI: 10.5402/2012/204813

Maryam Khoroushi, Mahsa Mansoori

{"title":"Marginal sealing durability of two contemporary self-etch adhesives.","authors":"Maryam Khoroushi, Mahsa Mansoori","doi":"10.5402/2012/204813","DOIUrl":"https://doi.org/10.5402/2012/204813","url":null,"abstract":"Introduction. Sealing abilities of two self-etch adhesives were evaluated after two aging processes: storage in water and thermocycling. Materials and Methods. Cl V cavities were prepared on the buccal and lingual aspects of 48 human premolars, with cervical margins 1 mm below the CEJ. Clearfil Protect Bond (CPB) and BeautiBond (BB) (two-step and one-step self-etch adhesives, resp.) were applied, each to half of the cavities and restored with composite resin. Each group was randomly subdivided into 4 subgroups (n = 12) and evaluated for dye penetration after 24 hours, after 3000 thermocycling rounds, after a 6-month water storage, and after 3000 thermocycling rounds plus 6-month water storage, respectively. Data was analyzed using SPSS 11.5 and Kruskal-Wallis and Mann-Whitney U tests (α = 0.05). Results. There were no significant differences in enamel and dentin microleakage between the adhesives (P = 0.683; P = 0.154). Furthermore, no significant differences were observed in enamel microleakage of each one of CPB and BB (P = 0.061 and P = 0.318, resp.). However, significant decrease was observed in subgroups 3 and 4 (P = 0.001) for CPB dentinal margins. Conclusion. In this study, limited aging procedures had no influence on marginal integrity of composite resin restorations bonded with self-etch adhesives of CPB and BB. Furthermore, CPB dentinal sealing improved after aging.","PeriodicalId":89396,"journal":{"name":"ISRN dentistry","volume":"2012 ","pages":"204813"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5402/2012/204813","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30632527","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: 16

Temperature Rise during Primer, Adhesive, and Composite Resin Photopolymerization of a Low-Shrinkage Composite Resin under Caries-Like Dentin Lesions. 一种低收缩复合树脂光聚合在类龋牙本质损伤下的底漆、粘合剂和复合树脂的温升。

ISRN dentistry Pub Date : 2012-01-01 Epub Date: 2012-12-24 DOI: 10.5402/2012/198351

Sayed-Mostafa Mousavinasab, Maryam Khoroushi, Mohammadreza Moharreri

{"title":"Temperature Rise during Primer, Adhesive, and Composite Resin Photopolymerization of a Low-Shrinkage Composite Resin under Caries-Like Dentin Lesions.","authors":"Sayed-Mostafa Mousavinasab, Maryam Khoroushi, Mohammadreza Moharreri","doi":"10.5402/2012/198351","DOIUrl":"https://doi.org/10.5402/2012/198351","url":null,"abstract":"Objective. This study evaluated temperature rise of low-shrinkage (LS) self-etch primer (P), LS self-etch adhesive (A), and P90 silorane-based composite resin systems, photopolymerized under normal and artificially demineralized dentin. Methods. Forty 1.5 mm-thick dentin discs were prepared from sound human molars, half of which were demineralized. Temperature rise was measured during photopolymerization using a K-type thermocouple under the discs: 10 s and 40 s irradiation of the discs (controls/groups 1 and 2); 10 s irradiation of primer (P), 10 s irradiation of adhesive (A), 40 s irradiation of P90 without P and A, and 40 s irradiation of P90 with P and A (groups 3 to 6, resp.). The samples were photopolymerized using an LED unit under 550 mW/cm(2) light intensity. Data was analyzed using repeated measures ANOVA and paired-sample t-test (α = 0.05). Results. There were no significant differences in temperature rise means between the two dentin samples for each irradiation duration (P > 0.0001), with significant differences between the two irradiation durations (P > 0.0001). Temperature rise measured with 40 s irradiation was significantly higher than that of 10 s duration for undemineralized and demineralized dentin P < 0.0001). Conclusions. Light polymerization of P90 low-shrinkage composite resin resulted in temperature rise approaching threshold value under artificially demineralized and undemineralized dentin.","PeriodicalId":89396,"journal":{"name":"ISRN dentistry","volume":"2012 ","pages":"198351"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5402/2012/198351","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31162882","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: 8

Common Perceptions of Periodontal Health and Illness among Adults: A Qualitative Study. 成年人对牙周健康和疾病的共同认知:一项定性研究。

ISRN dentistry Pub Date : 2012-01-01 Epub Date: 2012-09-17 DOI: 10.5402/2012/671879

M Gholami, A Pakdaman, J I Virtanen

{"title":"Common Perceptions of Periodontal Health and Illness among Adults: A Qualitative Study.","authors":"M Gholami, A Pakdaman, J I Virtanen","doi":"10.5402/2012/671879","DOIUrl":"https://doi.org/10.5402/2012/671879","url":null,"abstract":"Objective. Our aim was to explore perceptions of periodontal health and illness and to examine attitudes and beliefs regarding prevention of gum diseases among Iranian adults. Methods. Our qualitative approach included focus-group discussions among adults aged 18 and above based on convenient and purposive sampling in Tehran. Transcripts of the four focus-group discussions were analyzed by two independent reviewers using a content analysis method. Results. Two major themes in the analyses emerged: the common perception of periodontal health and illness and the attitude towards prevention. The study demonstrated the subjects' good understanding of prevention of periodontal disease, but their lack of knowledge of the aetiology of the diseases, and an inability to differentiate aetiology, symptoms, and prevention of dental caries and periodontal disease. Conclusion. This study revealed a need for oral health education among Iranian adults to improve their knowledge and change their attitudes to achieve deeper understanding of the aetiology and prevention of periodontal disease. Health promotion programs should address misconceptions about prevention of gum disease.","PeriodicalId":89396,"journal":{"name":"ISRN dentistry","volume":"2012 ","pages":"671879"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3458291/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30947518","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: 16

The effect of three different disinfection materials on alginate impression by spray method. 三种不同消毒材料对喷雾法藻酸盐印痕的影响。

ISRN dentistry Pub Date : 2012-01-01 Epub Date: 2012-07-25 DOI: 10.5402/2012/695151

Hamid Badrian, Ehsan Ghasemi, Navid Khalighinejad, Nafiseh Hosseini

{"title":"The effect of three different disinfection materials on alginate impression by spray method.","authors":"Hamid Badrian, Ehsan Ghasemi, Navid Khalighinejad, Nafiseh Hosseini","doi":"10.5402/2012/695151","DOIUrl":"https://doi.org/10.5402/2012/695151","url":null,"abstract":"Introduction. The aim of this study was to investigate the effect of three different types of disinfectant agents on alginate impression material after 5 and 10 minutes. Method and Materials. In this in vitro experimental study, 66 circular samples of alginate impression material were contaminated with Staphylococcus aureus, Pseudomonas aeruginosa, and Candida albicans fungus. Except for control samples, all of them were disinfected with sodium hypochlorite 0.525, Deconex, and Epimax by way of spraying. Afterwards, they were kept in plastic bags with humid rolled cotton for 5 and 10 minutes. The number of colonies was counted after 24 and 48 hours for bacteria and after 72 hours for fungus. Statistical Mann-Whitney test was used for data analysis (α = 0.05). Results. After 5 minutes, Epimax showed the highest disinfection action on Staphylococcus aureus as it completely eradicated the bacteria. The disinfection capacity of different agents can be increased as time elapses except for Pseudomonas aeruginosa which was eradicated completely in both 5 and 10 minutes. Conclusion. This study revealed that alginate can be effectively disinfected by three types of disinfecting agents by spraying method, although Epimax showed the highest disinfection action after 10 minutes compared to other agents.","PeriodicalId":89396,"journal":{"name":"ISRN dentistry","volume":"2012 ","pages":"695151"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5402/2012/695151","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30840218","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: 52

Integration of digital dental casts in cone-beam computed tomography scans. 锥形束计算机断层扫描中数字牙科模型的集成。

ISRN dentistry Pub Date : 2012-01-01 Epub Date: 2012-09-23 DOI: 10.5402/2012/949086

Frits A Rangel, Thomas J J Maal, Stefaan J Bergé, Anne Marie Kuijpers-Jagtman

{"title":"Integration of digital dental casts in cone-beam computed tomography scans.","authors":"Frits A Rangel, Thomas J J Maal, Stefaan J Bergé, Anne Marie Kuijpers-Jagtman","doi":"10.5402/2012/949086","DOIUrl":"https://doi.org/10.5402/2012/949086","url":null,"abstract":"Cone-beam computed tomography (CBCT) is widely used in maxillofacial surgery. The CBCT image of the dental arches, however, is of insufficient quality to use in digital planning of orthognathic surgery. Several authors have described methods to integrate digital dental casts into CBCT scans, but all reported methods have drawbacks. The aim of this feasibility study is to present a new simplified method to integrate digital dental casts into CBCT scans. In a patient scheduled for orthognathic surgery, titanium markers were glued to the gingiva. Next, a CBCT scan and dental impressions were made. During the impression-taking procedure, the titanium markers were transferred to the impression. The impressions were scanned, and all CBCT datasets were exported in DICOM format. The two datasets were matched, and the dentition derived from the scanned impressions was transferred to the CBCT of the patient. After matching the two datasets, the average distance between the corresponding markers was 0.1 mm. This novel method allows for the integration of digital dental casts into CBCT scans, overcoming problems such as unwanted extra radiation exposure, distortion of soft tissues due to the use of bite jigs, and time-consuming digital data handling.","PeriodicalId":89396,"journal":{"name":"ISRN dentistry","volume":"2012 ","pages":"949086"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3461639/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30965708","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: 26

Accuracy of four tooth size prediction methods on malay population. 四种牙齿大小预测方法在马来人口中的准确性。

ISRN dentistry Pub Date : 2012-01-01 Epub Date: 2012-11-14 DOI: 10.5402/2012/523703

Belal Khaled Mahmoud, Saifeddin Hamed I Abu Asab, Haslina Taib

{"title":"Accuracy of four tooth size prediction methods on malay population.","authors":"Belal Khaled Mahmoud, Saifeddin Hamed I Abu Asab, Haslina Taib","doi":"10.5402/2012/523703","DOIUrl":"10.5402/2012/523703","url":null,"abstract":"Objective. To examine the accuracy of Moyers 50%, Tanaka and Johnston, Ling and Wong and Jaroontham and Godfrey methods in predicting the mesio-distal crown width of the permanent canines and premolars (C + P(1) + P(2)) in Malay population. Materials and Methods. The study models of 240 Malay children (120 males and 120 females) aged 14 to 18 years, all free of any signs of dental pathology or anomalies, were measured using a digital caliper accurate to 0.01 mm. The predicted widths (C + P(1) + P(2)) in both arches derived from the tested prediction equations were compared with the actual measured widths. Results. Moyers and Tanaka and Johnston methods showed significant difference between the actual and predicted widths of (C + P(1) + P(2)) for both sexes. Ling and Wong method also showed statistically significant difference for males, however, there was no significant difference for females. Jaroontham and Godfrey method showed statistical significant difference for females, but the male values did not show any significant difference. Conclusion. For male Malay, the method proposed by Jaroontham and Godfrey for male Thai proved to be highly accurate. For female Malay, the method proposed by Ling and Wong for southern Chinese females proved to be highly accurate.","PeriodicalId":89396,"journal":{"name":"ISRN dentistry","volume":"2012 ","pages":"523703"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3504368/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31096906","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

Malocclusion Pattern (Angle's) in Mauritian Orthodontic Patients. 毛里求斯正畸患者的错牙合模式(角度)。

ISRN dentistry Pub Date : 2012-01-01 Epub Date: 2012-03-28 DOI: 10.5402/2012/210306

B H Durgesh, Prashanth Prakash, Ravikumar Ramakrishnaiah, Basavaraj Subashchandra Phulari, Abdul Aziz A Al Kheraif

引用次数: 6