摘要:

a surgical and suturing methodis described for the subgingival placement of Gore‐tex® periodontal material during new attachment procedures. The periodontal material isolates the root surface from epithelium and gingival connective tissue. Three cases were treated. Clinical new attachment was evident from clinical probings and reentry. The term “open probing new attachment” describes the type of tissue that was evident at reentry after treatment of a Class III furcation. A combination of new bone and “open probing new attachment” was evident after one‐wall defects were treated adjacent to a mandibular cuspid. A two‐wall defect was treated and biopsied three months later. A reference notch was placed 1 mm coronal to the apical aspect of the defect. Histologic examination of the biopsy showed new bone, cementum and periodontal fibers coronal to the notch. Clinical and histologic new attachment was achieved using the technique for root isolation. The long‐term predictability and stability of this type of new attachment is not known at this time.

ISSN:1049-8885    

DOI:10.1902/jop.1987.58.12.819

出版商:Wiley    

年代:1987

数据来源: WILEY

摘要:

periodontal diseases are localized, plaque‐related infections. Often, clinical signs of inflammation are not eradicated by supragingival plaque control, dictating that subgingival microbial populations must be reduced. Confirmation that it is possible to deliver medicaments to the base of deep pockets stimulated numerous investigations. This report evaluates the role of site‐specific pharmacotherapy to enhance periodontal status.

ISSN:1049-8885    

DOI:10.1902/jop.1987.58.12.827

出版商:Wiley    

年代:1987

数据来源: WILEY

摘要:

gingival biopsies of the mesial papilla areaof the first molar were obtained from each patient at 0‐, 14‐ and 21‐day intervals during plaque formation. The biopsies were fixed, serially sectioned, and Gram‐stained. The incidence and distribution of the bacteria‐like structures were studied by microscopy. In all the specimens the bacterial nature of Gramstained material was substantiated. In the epithelium the highest number of bacteria was found at the outer layer of marginal oral epithelium, sulcular epithelium and apical oral epithelium along with a decreasing pattern of penetration progressing deeper into the layers of tissue. For junctional epithelium the situation was just the opposite. Each subject had significantly higher counts at Day 21 than at Day 14 for both epithelium and connective tissue. Also significantly higher counts were found in connective tissue compared with the epithelium. The higher bacterial density of intragingival bacteria was associated with the higher gingival and plaque indices.This study suggests that early stages of gingival inflammation may be mediated by invasion of bacteria.

ISSN:1049-8885    

DOI:10.1902/jop.1987.58.12.837

出版商:Wiley    

年代:1987

数据来源: WILEY

摘要:

previous ultrastructural investigations of untreatedsites of both adult and juvenile periodontitis have shown bacteria within the periodontal soft tissues. In the present study biopsies of the soft tissue walls of deep pockets from seven patients with juvenile (JP) or postjuvenile periodontitis (PJP) were removed at the end of the presurgical oral hygiene phase of treatment and examined in the transmission electron microscope. Bacteria were sparse, regardless of the level of tissue breakdown, both on the surface and within the superficial layers of the epithelium, deep to the basement membrane and throughout the underlying connective tissue. Of the 140 blocks from 20 biopsies, only two revealed intratissue accumulations of microorganisms. The organisms observed were gram‐positive or gram‐negative and appeared to be exclusively coccoid or rod‐shaped. It is suggested that the reduced tissue content of bacteria reflects the establishment of adequate oral hygiene. Evidently either the tissue content of bacteria is less than has been reported previously or the host response is able to cope with residual bacteria that have penetrated the soft tissue.

ISSN:1049-8885    

DOI:10.1902/jop.1987.58.12.847

出版商:Wiley    

年代:1987

数据来源: WILEY

摘要:

odontogenic tumors normally occurwithin the tooth‐bearing areas of the jaws. When they involve the dentogingival complex of adjacent teeth, their removal may become the responsibility of the periodontist. The odontomas are the most common of the odontogenic solid tumors and will be encountered most often by the periodontist. A review of the odontomas is presented followed by a case report and a discussion of the periodontal considerations in their removal. Emphasis is placed on following standard hygiene procedures before and after any periodontal surgery along with conservative removal of the lesion to preserve the periodontal attachment around the adjacent teeth.

ISSN:1049-8885    

DOI:10.1902/jop.1987.58.12.856

出版商:Wiley    

年代:1987

数据来源: WILEY

摘要:

the plaque‐removing effectof a convex‐shaped multitufted brush was compared with that of a conventional flat multitufted brush. Two groups (five and seven dental students, respectively), well instructed in the modified Bass technique, participated in a blind, splitmouth, crossover study during two consecutive experimental periods of 96 hours of undisturbed plaque growth. After each of these periods, a supervised brushing session was performed, followed by toothpick utilization. Plaque removal was evaluated using the modified Navy Plaque Index (MNPI) and planimetry. A 4% erythrosin solution was used as a disclosing agent.Planimetrically, the flat Oral B® brush appeared significantly more effective than the convex shaped Ph® brush (P<0.001). This superiority was even enhanced after the use of toothpicks (P<0.0005). The differences between the brushes, however, were too small to be detected by the less discriminating MNPI.Although it has been claimed that the convex brush could assure approximal plaque control, the results indicate that for the convex‐shaped, as well as for the flat brush, an approximal aid is essential for good plaque control. The hypothesis that the design of the convex‐shaped brush could facilitate the modified Bass technique for the average patient could not be proven in this study.

ISSN:1049-8885    

DOI:10.1902/jop.1987.58.12.861

出版商:Wiley    

年代:1987

数据来源: WILEY

摘要:

in the last few years severalbacteriological and immunological studies have investigated the role of bacteria and immune defects in order to establish the etiopathogenesis of periodontal disease. With regard to the immune system, a defect in polymorphonuclear neutrophil (PMN) Chemotaxis has been frequently reported in patients with rapidly progressive or juvenile periodontitis.The purpose of this study was to investigate in five patients with rapidly progressive periodontitis and normal Chemotaxis of peripheral blood PMNs the presence of Chemotaxis inhibitory activity in gingival fluid and to relate such activity to three types of bacteria, often involved in rapidly evolving periodontal lesions, that are able to inhibitin vitroPMN Chemotaxis:Bacteroides gingivalis, Capnocytophagasp., andActinobacillus actinomycetemcomitans. We found strong inhibitory activity in three of these patients. This activity was consistently associated with the finding ofB. gingivalisin gingival pockets. We cannot rule out, however, that other substances not of bacterial origin could be responsible for such inhibitory activity. The strict association withB. gingivalis, known to secrete blocking factors, is highly suggestive, although this data must be considered preliminary.

ISSN:1049-8885    

DOI:10.1902/jop.1987.58.12.868

出版商:Wiley    

年代:1987

数据来源: WILEY

ISSN:1049-8885    

DOI:10.1902/jop.1987.58.12.873

出版商:Wiley    

年代:1987

数据来源: WILEY