ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1995.tb00001.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

Twenty‐five temporomandibular joints (TMJs) in 15 patients with chronic arthritic disease were treated with synovectomy and diskectomy. Twenty patients with internal derangement of 27 TMJs treated with diskectomy served as a control group. A response in pain relief was seen in 73% of the patients with chronic arthritic disease and in 80% of the patients with internal derangement 3 yr postoperatively. In both groups of patients a significant increase in mouth opening capacity and lateral movement of the mandible was seen postoperatively, with no significant difference in the improvement between the two groups. Four patients with chronic arthritic disease were reoperated within the 3‐yr observation period. This study indicates that synovectomy and diskectomy of the TMJ may reduce pain and improve mandibular function in patients with severe chronic arthritic TMJ dise

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1995.tb00002.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

Calprotectin is a major protein of granulocytes and monocytes with antimicrobial properties, and is released during activation or cell death. In the present stud' the levels of Calprotectin in various oral fluids were analyzed in 12 healthy adults using different collection devices. Parotid saliva, stimulated whole saliva and “mucosal transudate” were collected and analyzed by enzyme‐linked immunosorbent assay (ELISA). The results showed mean concentrations of 3.2, 22.0 and 40.9 mg/l in the respective oral fluids, illustrating great variation of Calprotectin levels between different oral fluids. The results are in accordance with the composition of these saliva samples; the lowest Calprotectin level was obtained in parotid saliva, which contains the purest secretion. These findings illustrate the importance of careful sampling procedures. The levels of salivary calprotectin are markedly influenced by the site of colle

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1995.tb00003.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

The present study characterizes the periodontal status of patients with Sjögren's syndrome (SS) and measures collagenase, elastase and gelatinase in gingival crevicular fluid (GCF) from these patients compared with adult individuals with periodontitis and healthy controls. The periodontal status was assessed by the Gingival Bleeding Index (GBI), the Visible Plaque Index (VPI), and pocket depth. Activity measurements were performed for collagenase with SDS‐PAGE/ laser densitometry, for elastase spectrophotometrically using a synthetic N‐succinyl‐Ala‐Ala‐Val p‐nitroanilide peptide substrate, and for gelatinase with zymography. Seven of the 8 patients with SS and xerostomia showed a periodontium comparable to that seen in healthy controls. The GCF collagenase and elastase were significantly lower in patients with SS and in healthy controls than in patients with adult periodontitis. It was noteworthy that the one SS patient with periodontitis had high GCF collagenase and elastase activity. In all study groups multiple forms of gelatinases were present, indicating that they represent constitutively expressed proteinases involved in normal tissue remodeling processes. Our findings suggest that periodontal pockets/GCF form a micromilieu not affected by involvement of glandular tissue and, therefore, patients with SS show, clinically and biochemically, a periodontal status comparable to that seen in heal

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1995.tb00004.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

The purpose of the present study was to compare the texture of dentin surfaces after etching with citric and phosphoric acids as well as EDTA with respect to mode of application and exposure time, and to assess possible effects on early cell and tissue colonization. It was concluded that EDTA operating at neutral pH was able to selectively remove mineral from a dentin surface, exposing a collagenous matrix. This was in contrast to etching with citric and phosphoric acids, both of which operate at a low pH. They both appeared to remove not only the mineral component but also the collagenous matrix. EDTA‐treated dentin surfaces, compared to surfaces etched at low pH, appeared to be more inviting for cellular colonization and subsequent connective tissue formation. The reason for this may have been twofold: Dentin surfaces etched with an etching agent operating at neutral pH, as indicated above, retain more exposed collagen fibers than dentin surfaces etched at low pH. Furthermore, it can not be excluded that a low pH etching agent necrotized an area of the periodontal ligament in the immediate vicinity of the denuded dentin surface

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1995.tb00005.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

The present study examines the correlation between caries lesions in enamel and the corresponding dentin reactions in proximal tooth surfaces with lesions ranging from enamel lesions to cavitations without dentin exposure. Using quantitative imbibition technique, the highest degree of tissue porosity, irrespective of lesion activity, was always noted along a Central‐Traverse (CT), which followed the direction of the rods from the deepest point of penetration to the surface. The conical shape of approximal enamel lesions can thus be seen as the result of systematic variations in porosity along the rods determined by the specific interproximal environment. The initial dentin reaction, related to the enamel lesion approaching the enamel–dentin junction (EDJ), was seen as a local dentin translucency where the CT crossed the EDJ. Results from histomorpho‐metric analyses revealed that, when the enamel lesions reached the EDJ, brownish discoloration in the dentin never exceeded the histologic contact area between the enamel lesion and the EDJ. In relation to the less advanced parts of the individual enamel lesion, the dentin responded with formation of translucent dentin. These reactions did not occur beyond an area determined by lines in the direction of the rods from the peripheral part of the enamel lesion towards the EDJ. The results did not support the view that dentin caries spreads along the enamel‐dentin junction. The peripheral dentin translucency is therefore generated by stimuli transmitted along the rods of the less advanced parts of the enamel

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1995.tb00006.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

Effects of three different types of short‐term applications (1–3 limes during 1 week) of chlorhexidine (1 or 40%) on the susceptibility of 863 clinical isolates ofStreptococcus mutansand 53 isolates ofStreptococcus sobrinusfrom 58 subjects were studied. Chlorhexidine‐resistant isolates were not found either before or after the treatment. The minimum inhibitory concentrations (MICs) to chlorhexidine of all isolates ofS. mutanswere ≤1 μg/ml, and ofS. sobrinus≤2 μg/ ml.S. mutansandS. sobrinuswere also susceptible to ampicillin, penicillin, cefuroxime, and tetracycline. In conclusion, different short‐term chlorhexidine regimens do not induce resistance inS. mutansorS. sobrinusand, furthermore, these species have so far retained their susceptibility to commo

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1995.tb00007.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

The aim of the present study was to compare the use of toothpicks with other sampling methods for determination of mutans streptococci on different tooth surfaces. In nine persons with>105CPU per ml saliva of mutans streptococci, plaque samples were taken from 90 buccal and lingual surfaces. 108 occlusal surfaces and 90 approximal surfaces with toothpicks. The prevalence of mutans streptococci on these tooth surfaces was compared with samples taken at four 1‐week intervals on the same tooth surfaces with a carver (buccal/lingual surfaces), a needle (occlusal surfaces) or a dental floss (approximal surfaces). Each sample was plated on MSB agar and the presence of mutans streptococci was expressed on a scale varying from 0 to 4. On two of the sampling occasions the amount of plaque, mirrored by total viable counts on blood agar, was also determined. Only for buccal/lingual plaque samples was a difference in total counts between methods noted and then with higher total recoveries obtained after sampling with toothpicks. More surfaces were found to be positive for mutans streptococci when samples were taken with a toothpick than with a carver, needle or floss. On surfaces positive for mutans streptococci the colonization score was higher in samples taken with a toothpick than with a carver or a needle while samples taken with a floss showed a tendency to higher levels of mutans streptococci than samples collected with a toothpick. The data indicate that the results obtained by using toothpicks for evaluating the prevalence of mutans streptococci an individual tooth surfaces compare favorably with the other methods test

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1995.tb00008.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

Fifty 5‐yr‐old preschool children living in Akranes, a small community in West Iceland known to have a high caries prevalence, were investigated with respect to caries, salivary counts of mutans streptococci and lactobacilli and consumption of cariogenic foods. Fifteen months later, after being in school for half a year, 43 of the 50 children were reexamined and investigated as before. Mean dmfs scores rose from 7.1 to 9.0. but the scores including initial caries rose from 9.7 to 15.3. Mutans streptococci were carried by 84% of children on both occasions with a mean count 2.1 and 3.6 × 105cfu/ml. Lactobacillus carriage increased from 29 to 38% and the mean count from 5.1 to 13 × 103cfu/ml at 6 yr. The frequency of consumption of sugar‐containing foods increased from 4.2 to 5.2 intakes per day and between‐meal snacks rose from 3.0 to 3.7 per day. Children classified as “misusing” sugar were 59% at 5 yr and 83% at 6 yr. The mean caries score at 6 yr for children “misusing” sugar was 10.7 but only 2.0 for those not misusing sugar. Thus the deterioration in dental health appears, in these children, to be associated with the increased consumption of sweets and other cariogenic between‐meal snacks af

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1995.tb00009.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

Subepithelial soft tissue and bone obtained from the implant bed in the vicinity of stainless steel and titanium miniplates and screws were evaluated with respect to the presence of immunocompetent cells. The study included tissue specimens from 19 patients, in whom the implants (14 stainless steel and 5 titanium) had beenin situfor more than 6 months. The ABC (avidin‐biotin‐complex) immunoperoxidase staining technique using monoclonal antibodies defining T lymphocytes (CD3+), macrophages (CDllc+) and Class II MHC (HLA‐DR) was performed on EDTA demineralized, frozen bone tissue, and on fresh frozen soft tissue specimens. The results showed scattered T lymphocyte clusters, small numbers of macrophages and abundant expression of HLA‐DR in the soft tissue adjacent to both stainless steel and titanium implants. There was no substantial difference in tissue reactions between implants of the two materials. The demineralized bone sections disclosed presence of immunocompetent cells in the connective tissue lining the periphery of the screw holes. Metal particles were seen in both the soft tissue and the bone specimens. We conclude that a mild tissue reaction takes place in the vicinity of miniplates and screws of stainless steel and titanium, and that the intensity of the reaction indicates that the implants are well tolerated by the host

ISSN:0909-8836    

DOI:10.1111/j.1600-0722.1995.tb00010.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY