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Dentistry for the 21st century: laser technology. 21世纪的牙科:激光技术。
NDA journal Pub Date : 1995-12-01
K DeShields
{"title":"Dentistry for the 21st century: laser technology.","authors":"K DeShields","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Lasers hve been used experimentally for nearly 40 years. Most applications in dentistry maintain use in oral and periodontal pathology. The use of lasers as an adjunct therapy in a general dental practice has recently been considered within the last 5 years. This article will consist of a literature review of the most recent applications in a clinical dental practice.</p>","PeriodicalId":79693,"journal":{"name":"NDA journal","volume":"46 2","pages":"12-4"},"PeriodicalIF":0.0,"publicationDate":"1995-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20514809","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}
引用次数: 0
Longitudinal cephalometric appraisal of maxillary protrusion in African Americans: a comparison with European Americans. 非裔美国人上颌前突的纵向头颅测量评估：与欧裔美国人的比较。
NDA journal Pub Date : 1995-12-01
E R Richardson, S K Malhotra
{"title":"Longitudinal cephalometric appraisal of maxillary protrusion in African Americans: a comparison with European Americans.","authors":"E R Richardson, S K Malhotra","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":79693,"journal":{"name":"NDA journal","volume":"46 2","pages":"31-5"},"PeriodicalIF":0.0,"publicationDate":"1995-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20514813","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}
引用次数: 0
Comparison of thermoplasticized gutta-percha root canal obturation technique to the lateral condensation. 热塑性胶根管封闭技术与侧缩的比较。
NDA journal Pub Date : 1995-12-01
A A Chohayeb, C Tom
{"title":"Comparison of thermoplasticized gutta-percha root canal obturation technique to the lateral condensation.","authors":"A A Chohayeb,&nbsp;C Tom","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>This in vitro study compared the quality of filling the root canal by the conventional lateral condensation technique to the fill by the commercially available thermoplasticized gutta-percha method. Subjective radiographic evaluation of density, presence of voids, and extent of fill were made for each of the 20 freshly extracted maxillary central incisors used for this study. Voids were noted in 10% of the laterally condensed canals, versus 40% of those obturated with the thermoplasticized gutta-percha. The mean time (in seconds) to obturate the canals with lateral condensation was 387 (s = 112); of the experimental was 145 (s = 23). We conclude that thermoplastisizing and injecting the gutta-percha into the root canal was a fast and a relatively easy technique, but the resultant filling was no more dense, and was shorter apically than the laterally condensed gutta-percha.</p>","PeriodicalId":79693,"journal":{"name":"NDA journal","volume":"46 2","pages":"18-21"},"PeriodicalIF":0.0,"publicationDate":"1995-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20514811","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}
引用次数: 0
Salivary count of Streptococcus mutans in elementary school children. 小学生唾液中的变异链球菌计数。
NDA journal Pub Date : 1995-12-01
L Richardson, S M McKibbins, W Seibert, J Tyus
{"title":"Salivary count of Streptococcus mutans in elementary school children.","authors":"L Richardson, S M McKibbins, W Seibert, J Tyus","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Previous studies have documented that persons with high levels of Streptococcus mutans are \"at risk\" for dental caries. The objective of this study was to identify children at an early age who were \"at risk\" for caries. The sample consisted of 77 school children aged 9-13 years old. The majority of the sample was African-Americans (55.8%). Approximately 51% were females. The Dentocult SM Strip Mutans Test was used to estimate the S. mutans count in saliva. The method is based on the use of a selected culture broth and the adhere S. mutans count of < 1,000,000 bacteria ml saliva and children with S. mutans count of < 1,000,000 were classified as \"low risk\" for caries. The DMF-T was used to estimate the number of decayed, missing and filled teeth. The decayed mean score = 1.85; range = 0-9. Only two children had teeth missing (one in each). The number of filled teeth was low; mean = .88; range = 0-6. The DMF-T mean score was 2.75; range = 0-9. Correlations were sought between levels of S. mutans rates and decayed teeth. Low, but nonsignificant, correlations were found between S. mutans and decayed teeth (r = .20). This trend continued for S. mutans levels and the DMF-T (r = .16). Analysis of Variance Test (ANOVA) indicated a significant effect by sex on the levels of S. mutans P < .05 (females had higher S. mutans levels than males). There was no significant difference or interaction noted in DMF-T scores by sex or race. In addition no significant difference was noted in the number of decayed teeth by sex or race. Our results indicate that females in this age group are potentially at greater risk for dental caries than their male counterparts due to the observed higher levels of S. mutans. This observation deserves further study.</p>","PeriodicalId":79693,"journal":{"name":"NDA journal","volume":"46 2","pages":"8-11"},"PeriodicalIF":0.0,"publicationDate":"1995-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20514808","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}
引用次数: 0
Arch expansion with Kloehn headgear. 用克勒恩头饰扩展拱门。
NDA journal Pub Date : 1995-12-01
D M Russell, J W Meeks, C F Sanders
{"title":"Arch expansion with Kloehn headgear.","authors":"D M Russell,&nbsp;J W Meeks,&nbsp;C F Sanders","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":79693,"journal":{"name":"NDA journal","volume":"46 2","pages":"22-6"},"PeriodicalIF":0.0,"publicationDate":"1995-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20514812","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}
引用次数: 0
Analysis of the insertion characteristics of Tn4351 during high frequency transposition of Porphyromonas gingivalis. 龈卟啉单胞菌高频转位中Tn4351的插入特性分析。
NDA journal Pub Date : 1995-12-01
W H Lynn, C A Genco, R Y Forng
{"title":"Analysis of the insertion characteristics of Tn4351 during high frequency transposition of Porphyromonas gingivalis.","authors":"W H Lynn,&nbsp;C A Genco,&nbsp;R Y Forng","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In this study, we characterized the high frequency transfer of the Bacteroides fragilis transposon Tn4351 into the chromosome of Porphyromonas gingivalis using a system developed by Genco, et al. Using this system, transconjugants were isolated and genomic sequences analyzed using both Ava-I and EcoR1 to determine the insertion characteristics of Tn4351 into the genome of P. gingivalis. Although previous evidence pointed to the possibility of random insertion, this study shows that, in fact, the insertion characteristics of Tn4351 into the genome of P. gingivalis are nonrandom and predictable.</p>","PeriodicalId":79693,"journal":{"name":"NDA journal","volume":"46 2","pages":"15-7"},"PeriodicalIF":0.0,"publicationDate":"1995-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20514810","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}
引用次数: 0
Dental managed care: an opportunity for empowerment. 牙科管理保健:一个授权的机会。
NDA journal Pub Date : 1995-01-01
T Douglas, G Manning-Cox
{"title":"Dental managed care: an opportunity for empowerment.","authors":"T Douglas,&nbsp;G Manning-Cox","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":79693,"journal":{"name":"NDA journal","volume":"46 1","pages":"12-3"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20514893","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}
引用次数: 0
The effects of temperature on the strength of composites. 温度对复合材料强度的影响。
NDA journal Pub Date : 1995-01-01
T J Matthews, W G de Rijk
{"title":"The effects of temperature on the strength of composites.","authors":"T J Matthews,&nbsp;W G de Rijk","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":79693,"journal":{"name":"NDA journal","volume":"46 1","pages":"14-6"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20514895","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}
引用次数: 0
Comparative epidemiology of dental caries for black first-graders in Oakland, CA. 加州奥克兰黑人一年级学生龋齿的比较流行病学研究。
NDA journal Pub Date : 1995-01-01
J E Lovett, J L Sintes, M Butler
{"title":"Comparative epidemiology of dental caries for black first-graders in Oakland, CA.","authors":"J E Lovett,&nbsp;J L Sintes,&nbsp;M Butler","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":79693,"journal":{"name":"NDA journal","volume":"46 1","pages":"21-6"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20514900","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}
引用次数: 0
Histologic study of pulp capping using chlorhexidine in dogs. 狗用氯己定盖髓的组织学研究。
NDA journal Pub Date : 1995-01-01
G P Thomas, J B Boyd, N N Soni, J E Palmer
{"title":"Histologic study of pulp capping using chlorhexidine in dogs.","authors":"G P Thomas,&nbsp;J B Boyd,&nbsp;N N Soni,&nbsp;J E Palmer","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>This histological study was conducted to compare the pulp reactions to chlorhexidine and calcium hydroxide. Twenty permanent premolar teeth of beagle dogs were mechanically exposed under aseptic conditions. The pulp was then capped with one of the following: chlorhexidine 0.2% on the left side and calcium hydroxide (dycal) on the right side of the same dog. Maxillary second premolars were extracted from each dog three weeks after the pulp capping procedure. Maxillary third premolars and mandibular first premolars were extracted at 6 weeks and 9 weeks respectively. The mandibular second premolars were extracted three months after the pulp capping procedure. The specimens were fixed in 10% formalin and decalcified in 5% formic acid. Serial sections, 7 microns thick, were prepared and stained with hematoxylin and eosin. Teeth treated with chlorhexidine or with calcium hydroxide were well tolerated by the dental pulp at 3 and 6-week intervals. Pulps treated showed satisfactory pulp reaction and the odontoblastic layer appeared to be normal and in its configuration. Inflammatory response was not present at the 6-week time interval. At nine weeks, the inflammatory response was severe in those teeth treated with calcium hydroxide. There were no remarkable histological differences among the treatment groups at 12 and 15 weeks. These specimens showed complete loss of pulpal architecture. Regressive changes were seen and microscopic specimens revealed presence of spaces and intertwining bundles of films in the pulp.</p>","PeriodicalId":79693,"journal":{"name":"NDA journal","volume":"46 1","pages":"17-20"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20514898","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}
引用次数: 0
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