{"title":"Betel chewing and dental decay.","authors":"P Nigam, A B Srivastava","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A survey was carried out on Four hundred and sixty patients to find out the effects of betel chewing on dental caries & oral hygiene. It was found that among the betel chewers as well as the non betels chewers., the highest caries susceptibility was in the age group of 20-34 years. Also caries susceptibility was higher among the females as compared to males. It was also observed that though the habit of betel chewing reduces the incidence of dental decay, maintenance of oral hygiene is very poor.</p>","PeriodicalId":77712,"journal":{"name":"Federation of operative dentistry","volume":"1 1","pages":"36-8"},"PeriodicalIF":0.0,"publicationDate":"1990-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13255392","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":"Effect of three surfactants on the bond strength of glass ionomer cement to dentin.","authors":"S Abdul Rub, S Jagdish","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>An invitro study was conducted to evaluate the effect of three surfactants on the Tensile Bond strength of Glass Ionomer Cement to dentin. The surface acting chemicals used on dentin in the analysis included combination of EDTA and sodium hypochlorite, orthophosphoric acid and sodium hypochlorite and the sodium hypochlorite alone. The results indicate that the combination of EDTA-sodium hypochlorite brought the best bonding followed by orthophosphoric acid & sodium hypochlorite and sodium hypochlorite in that order.</p>","PeriodicalId":77712,"journal":{"name":"Federation of operative dentistry","volume":"1 1","pages":"8-13"},"PeriodicalIF":0.0,"publicationDate":"1990-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13284215","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":"Fracture resistance of dowel channel preparations with various dentin thickness.","authors":"J Joseph, G Ramachandran","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>This in vitro study consisted of 40 cast dowel core made of technique metal alloy. They were divided into 4 groups of dowel channels with 1 mm facial dentin thickness, 2 mm facial dentin thickness, 1 mm facial dentin thickness with 60 degrees bevel for the metal collar and 2 mm facial dentin thickness with 60 degrees bevel in the metal collar, respectively. The fracture resistance under horizontal force were compared by using Instron machine. From the study, it was found that more than 1 mm thickness of labial dentin wall of post channel is required to prevent root fracture under horizontally directed force and an addition of 2 mm collar in the core around the root enhanced the resistance to root fracture. It was also found that adequate post diameter should be present when technique metal was used to prevent dowel failure due to bending under force.</p>","PeriodicalId":77712,"journal":{"name":"Federation of operative dentistry","volume":"1 1","pages":"32-5"},"PeriodicalIF":0.0,"publicationDate":"1990-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13255391","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}