摘要:

The purpose of the study was to examine the relationship between the longitudinal development of incisal tooth wear and periodontal conditions in 51 persons. Stone casts obtained at the ages of 15 and 27 yr were used to assess incisal wear according to a graded scale, the Incisal wear Index (Iwl). The wear increase after 12 yr, ΔIwI, was related to the various health index scores at the age of 15 yr, including the Plaque Index (PII) and Gingival Index (GI) systems. The chi‐square tests showed a statistically significant association between AIwI and periodontal condition in 15‐yr‐olds. Thus, relatively low P1I and GI values were accompanied by relatively high AIwI values. It was concluded that in 15‐yr‐olds, P1I and GI levels are clinical predictors of future wear (ΔIwI) of maxillary and mandibular central incisors. Pocket depth (PD) was a less valuable clinical predictor o

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1994.tb01143.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

A polymerase chain reaction (PCR)‐amplified oligonucleotide DNA probe corresponding to aFusobacterium nucleatumFevl DNA region coding for a 40‐kDa major outer‐membrane protein (OMP) and a randomly cloned 2.1 kb DNA probe were found to recognize DNA from the Gram‐negative bacteriaFusobacterium nucleatumandBacteroides fragilison Southern blots and slot blots. The results indicate sequence similarity within the DNA fragments studied. Immunoblots tested with polyclonal antibodies against whole cells ofF. nucleatumrevealed only weak antigen similarity between these

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1994.tb01144.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

The difference in surface temperatures between the bottom of periodontal pockets and the attached gingiva adjacent to the openings of the pockets were determined both in monkeys with experimental marginal periodontitis, and clinically in patients with marginal periodontitis. For this purpose a custommade, temperature‐measuring device was developed which enabled immediate recording of temperature differences as well as periodontal pocket depths, bleeding, and attachment levels. The measurements were performed periodically. The differential temperature measurements were correlated to change in periodontal attachment over time. It was shown that differential periodontal temperatures are well correlated to change in periodontal attachment over time. It was furthermore concluded that differential periodontal temperature measurements have the potential of serving as a predictor of activity of marginal periodontitis. However, more extensive data are required to assess the sensitivity and specificity of the metho

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1994.tb01145.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

The aim of this study was to test a possible dose‐response effect of topical application of delmopinol HC1 on the salivary microbiology, the healing of a pre‐established experimental gingivitis, plaque development, and supragingival plaque composition. Forty‐eight healthy subjects were enrolled in an oral hygiene program for 2 wk to upgrade their oral health. After professional tooth cleaning, they abstained from all oral hygiene, but applied 2 ml of a placebo with a soft paintbrush onto their teeth twice daily for 2 wk. At the end of this period, the subjects received tooth cleaning and were then assigned to three treatment groups of 16 individuals each. They applied 2 ml of 0.1%, 0.5%, and 1% delmopinol HC1, respectively, twice daily for the next 2 wk and refrained from all other oral hygiene procedures. At the end of the placebo and delmopinol HC1 treatment periods, (1) saliva samples were obtained and cultivated on a series of media, (2) the degree of gingivitis was measured with gingival crevicular fluid (GCF) and gingivitis index (GI), (3) the stainable buccal plaque extension was analyzed planimetrically, and (4) the bacterial morphotypes of plaque adjacent to the gingival margin were analyzed. No changes in the salivary microbiologic counts were detected. The amounts of GCF and GI were reduced in all delmopinol groups, as compared with placebo. Mean plaque extension was reduced by 16% for the 0.1%, 56% for the 0.5%, and 58% for the 1% delmopinol group. Cocci appeared to predominate in bacterial dental plaque when 0.5% and 1% delmopinol were used. The results indicate that short‐term use of delmopinol promotes the healing of pre‐established gingivitis, reduces plaque formation, and delays plaque maturation without detectable changes in the salivary m

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1994.tb01146.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

It has previously been shown that a toothpaste which contains triclosan and polydimethylsiloxane (silicone oil) improved gingival health in a test panel with established gingivitis more markedly than usually observed when testing commercial triclosan‐containing toothpastes. In the present study the mode of action of combinations of silicone oil and triclosan was investigated. Anin vitroexperiment showed that triclosan was retained in a thin layer of silicone oil on the inner surfaces of test tubes that had been treated with the combination of triclosan and silicone oil. This triclosan was slowly released and inhibited the growth of bacteria in the test tubes. Silicone oil alone and in combination with triclosan was able to inhibit polysaccharide adhesion to the test tubes in the presence of a strain ofStreptococcus sobrinusand a sucrose‐containing medium. Correspondingin vivoexperiments showed similar results; teeth topically treated with silicone oil and triclosan showed a marked plaque reduction, and those treated with silicone oil alone showed a moderate reduction, as compared with a placebo. The silicone oil plus 0.3% triclosan combination inhibited plaque formation also on proximal surfaces. It appears likely that this combination provides a reservoir of triclosan in the thin layer of silicone oil which binds strongly to teeth because of its low surface tension. Triclosan is then slowly released into saliva because of its low solubility in this fl

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1994.tb01147.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

The effect of fluoride in drinking water on the progression of dentinal caries and dentin apposition was studied separately in young and old Wistar rats. The animals were inoculated withStreptococcus sobrinusand fed ad libitum on a 43% sucrose diet and distilled water supplemented with 0, 1, or 19 ppm fluoride. After a 7‐wk (young) or 13‐wk (adult) cariogenic challenge, the areas of dentinal caries and dentin apposition were quantified after tetracycline staining. Fluoride in the drinking water reduced the progression of dentinal caries and the speed of dentin formation in the young animals but only the progression of dental caries in the adult ones. Both the progression of carious lesions in the dentin and the rate of dentin apposition were 10 times faster during primary dentinogene

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1994.tb01148.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

Five amalgam‐bearing patients, with clinically and histologically confirmed oral lichenoid lesions, were tested by applying 0.5% Hg in petrolatum for 10 min to clinically normal mucosa. Control sites were exposed to petrolatum only. Four amalgam‐bearing patients with no clinical evidence of oral lichenoid lesions served as controls; they were subjected to similar Hg and petrolatum exposure. After 24 h, biopsies were taken and immunocytochemically analyzed with monoclonal antibodies to lymphoid and nonlymphoid cells. No distinct differences could be detected between the Hg‐exposed areas of the lichen patients and those of the nonlichen patients. Furthermore, normal mucosa exposed to petrolatum only showed a staining pattern in the lichen patients which was no different from the nonlichen patients. The findings are discussed with respect to possible mechanisms of development of lichen‐like lesions in oral

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1994.tb01149.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

A questionnaire containing 20 questions was sent to 127 members of the Association for Those Injured by Electricity and Visual Display Units in northern Sweden, of whom 103 (81%) answered. The questionnaire consisted of questions about age, sex, and place of work. Furthermore, the members were asked to state: 1) their general and oral symptoms; 2) whether they thought that dental amalgam and other types of dental filling materials had affected their symptoms; 3) whether they were replacing or had replaced their amalgam fillings and, if so, what effect it had had on their symptoms; 4) whether they had been medically examined; and 5) whether they were or had been sick‐listed for their complaints. Of those who answered the questionnaire, 79% were women (mean age 45 yr) and 21% men (mean age 42 yr). Sixty percent worked in offices. In 82%, the symptoms had started at work. The mean duration of the symptoms was 5.2 yr. The symptoms were aggravated mostly in “electric environment in general” and in “office with computers”. Skin complaints, fatigue, and eye symptoms were the most common general symptoms. Sixty‐five percent mentioned that they had oral symptoms. Gustatory disturbances, burning mouth, and temporomandibular joint (TMJ) dysfunction were the most common oral symptoms. Fifty‐six percent considered that dental amalgam and 24% that other dental materials affected the symptoms. Twenty‐one percent were in the process of replacing the amalgam fillings; 40% had already done so. After replacement, 37% had noticed a decrease of symptoms. Most had been medically examined for their complaints, and 81% had been sick‐listed. Forty‐two percent had received “alternative care”. Finally, a treatment protocol for the examination and treatment of patients with symptoms caused by electricity or visual display unit

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1994.tb01150.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

The effect of triclosan on plaque inhibition was studied with various solvents. Eight subjects used the solutions as moulhwashes twice daily for 4 days while refraining from any other form of oral hygiene. Bacteriologic tests were also done with the same solutions. The study showed that the nature of the substance used to dissolve triclosan may be of clinical significance. Solutions of triclosan in polyethylene glycol, glycerol, or 3% sodium lauryl sulfate (SLS) alone showed marked antiplaque effect. (The first two solutions both contained 1.5% SLS.) However, triclosan dissolved in Tween 80 had only a negligible clinical effect. In vitro experiment showed that antibacterial tests did not correlate well with clinical data. It is proposed that the nature of the micelles of the detergents which are used to dissolve iriclosan is of significant importance. Strongly charged micelles such as SLS show clinical effect, whereas less charged micelles of SLS/Tween 80 or uncharged micelles of Tween 80 alone appear not to have this effect.

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1994.tb01151.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

The buffering capacity and flow rate of stimulated whole saliva were assessed in 150 persons, 20–24 yr of age. The associations were assessed between the buffer value and the flow rate, some dietary factors, tobacco habits, use of oral contraceptives, and some demographic variables. The results demonstrate that a low flow rate may predict a low buffer value but not a high value. Flow rate accounted for the largest part of the buffering variation but morning and afternoon saliva sampling, female gender, food consumption between meals, and smoking seem to have‐contributed to low buffering values. Snuff‐taking habits, oral contraceptives, and protein consumption between meals were not associated with the buffering cap

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1994.tb01152.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY