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Biomedical subjects

F H Barbakow

Publications and source records attributed to F H Barbakow.

At least 19 recordsLinked to original sources
PubMed1981

Endodontic treatment of teeth with periapical radiolucent areas in a general dental practice.

Clinical details of 192 teeth with preoperative periapical radiolucent areas, treated endodontically, are described. The presenting signs and symptoms as well as some postoperative observations are listed. Periapical radiolucent areas were most frequently found related to maxillary teeth: 55 percent were adjacent to teeth with a single root canal and 30 percent related to teeth with three root canals. Radiographic follow-up 1 or more years after therapy was possible in 125 of the root-filled teeth: of those teeth, 59 percent shows disappearance of the radiolucent area and 29 percent exhibited a decrease in size of the area. The degree of success did not appear to be related to the number of root canals filled per tooth but, rather, to whether or not the root filling was short of the radiographic apex. In addition, the prognosis made at the time of root filling was accurate in most cases when compared to the estimated success rates.

Adolescent↗
PubMed1979

Relationships among fluoride concentration in enamel, degree of fluorosis and caries incidence in a community residing in a high fluoride area.

The caries inhibitory effect of optimally fluoridated drinking water is well documented. Communities are often exposed to naturally fluoridated water with F content exceeding the optimal level. The purpose of this study was to determine the relationship between enamel fluoride, degree of fluorosis (DEGF) and caries incidence (DMFT) in an endemic fluoride area. Eighty-five 14- to 16-year-old children (37 males and 48 females) who were born and had been living continually in the town of Kenhardt in South Africa were selected for this study. The fluoride content of the common water supply is 3.2 ppm F. The DMFT and DEGF were determined clinically. Acid etch biopsies were carried out on both maxillary central incisors of each subject. Ca and F analysis were carried out and mass enamel expressed in microgram and mass F in pg. Data transformations to loge mass F (1nF), loge mass En (1nEn) and square root DMFT were made. The 1nF values were corrected to a standardized depth of 10 micrometer (208.6 microgram enamel equivalent mass) by covariance analysis. Correlations between the parameters square root DMFT, 1nF ad DEGF were calculated, adjusting for the sex of the individual. The correlations were as follows: (formula: see text). A positive association among the three parameters was established.

Adolescent↗
PubMed1978

Histologic response of replanted teeth pretreated with acidulated sodium fluoride.

Central incisors in the vervet monkey were extracted, endodontically treated, and replanted into their original sockets after immersion in a 2 per cent acidulated sodium fluoride solution (pH 5.5) for 30 minutes. Histologic examination at 1, 2, 4, and 8 weeks postoperatively showed that by the second week resorption had taken place and that ankylosis, first seen by the fourth week, along both the buccal and palatal root surfaces, was well established by the eighth week. Under the conditions of the study, pretreatment of the tooth roots with 2 per cent acidulated sodium fluoride did not reduce root resorption and ankylosis.

Acids↗
PubMed1977

Relationships between fluoride in enamel, DMFT index and fluorosis in high- and low-fluoride areas in South Africa.

The DMFT Index, degree of fluorosis (DEGF), and enamel fluoride concentration (F) were determined in 88 children living in a high- and 79 children living in a low-fluoride area in South Africa. The following interrelationships between these parameters were found: in both areas there was a significant negative correlation between log F and age; in the high-fluoride area there was a significant positive correlation between log F and DEGF; and in the combined data from the two areas there were significant correlations between log F and area, log F and age, and log F and DEGF, and a significant association between DEGF and area. There were no significant correlations between DMFT and log F and between DMFT and DEGF.

Adolescent↗