摘要:

Revascularization of theperiodontal tissues was studied after flap surgery. Modified Widman flap procedures were performed in four young Rhesus monkeys. All premolare and molars were involved. Experimental periods covered from 1 day to 90 days. The animals were sacrificed by exsanguination and perfused through the carotid arteries with a combined solution of equal parts of India ink and 10% buffered formalin solution. After fixation and decalcification, part of the blocks were processed to obtain cleared specimens following the Spalteholtz method. The remaining blocks were processed for routine histologic examination. The findings, mainly from the cleared specimens, showed that 1 day after surgery the supraperiosteal vessels in the flap demonstrated an overt hyperemic response. Patency of the vessels in the periodontal membrane and cancellous bone was evident; however, vessels were not depicted in the exposed cortical bone, nor in the clot. Vascular continuity apical to the surgical detachment was observed. In 3 to 4 days vascular proliferation within the organizing clot was observed and anastomosis between the gingiva and cancellous bone or periodontal membrane started to develop. At 7 days anastomoses were evident and vasodilation was present throughout the tissues. At 15 days and thereafter, vascular organization started to decrease, and the only hyperemic foci remaining were associated with areas of delayed bone remodeling, cementum remodeling or persistent marginal inflammation.

ISSN:1049-8885    

DOI:10.1902/jop.1981.52.1.1

出版商:Wiley    

年代:1981

数据来源: WILEY

摘要:

This study was designedto define the relative distribution of lymphocytes (Lc) and plasma cells (Pc) and the nature of cell‐associated Immunoglobulins (Ig), IgG, IgM, IgA, IgD, and IgE, and IgG subclasses IgG1, IgG2, IgG3 and IgG4, in gingiva from patients with periodontosis (juvenile periodontitis). The patient population consisted of nine persons, eight males and one female between the ages of 18 and 20. Gingival tissues were obtained from the interproximal area associated with either the maxillary or mandibular first molar and the adjacent premolar (autologous control). Histologic and immunofluorescent quantitation of Ig bearing Lc and Ig positive Pc was assessed using 10 consecutive serial sections (3–4μm) from each specimen. Periodontosis lesions were associated with pockets ranging from 6.0 to 11.0 mm and exhibited a mean G.I. = 0.5 Plasma cells were the predominant inflammatory cell present. The quantity and distribution of inflammatory cells increased with clinical severity. Autologous gingival biopsies from areas with a G.I. = 1.0, and pocket depths equal to a mean = 2.6 mm, contained numerous Lc and Pc. Seventy‐six percent of the Pc in periodontosis lesions lacked demonstrable cytoplasmic heavy chain Ig determinants typical of such cells. The predominant Ig staining cells present were IgG followed by IgA and IgM. Autologous gingival biopsies contained predominantly Ig‐negative Lc and very few Ig‐positive Pc. Plasma cells in periodontosis lesions exhibited marked reactivity to kappa and lambda anti‐light chain antiserum. The absence of heavy chains in Pc in periodontosis lesions may be another manifestation of the overall pattern of cellular and humoral abnormalities in periodontosis patients.

ISSN:1049-8885    

DOI:10.1902/jop.1981.52.1.8

出版商:Wiley    

年代:1981

数据来源: WILEY

摘要:

ProstaglandinEandF were measured simultaneously by radioimmunoassay in extracts of gingiva of patients with chronic periodontal disease. The mean values of PGE and PGF in 27 gingival samples were 42.2 ∓ 4.9 and 52.6 ∓ 6.8 pmol/gm wet tissue weight, respectively. The correlation coefficient (r) between the two groups of PGs was a positive 0.42, significant atP<0.05.

ISSN:1049-8885    

DOI:10.1902/jop.1981.52.1.16

出版商:Wiley    

年代:1981

数据来源: WILEY

摘要:

Inflammatory periodontaldisease arises as a response to bacterial plaque. This response, however, may be modified by systemic factors such as nutritional deficiency, hormonal imbalance or severe systemic disease. One such systemic disease that may modify host response to local etiologic factors is systemic lupus erythematosus (SLE). Depression of thrombocyte production is very rarely associated with SLE. A search of the medical literature has revealed only one such reported case. The case history that follows is of a 17‐year‐old black female with severe gingivitis and spontaneous gingival bleeding associated with systemic lupus erythematosus and amegakaryocytic thrombocytopenia. It is believed to be the first such case reported in the dental literature. The clinical, radiographic and hematologic findings will be presented and the medical and periodontal therapy discussed.

ISSN:1049-8885    

DOI:10.1902/jop.1981.52.1.20

出版商:Wiley    

年代:1981

数据来源: WILEY

摘要:

Intravenous diazepamwas evaluated as a preoperative medication prior to periodontal surgery. Ten patients were subjected to two separately scheduled surgical episodes. During one procedure, a placebo was administered via an intravenous drip and during the other procedure, diazepam was titrated until Verrill's sign was reached. Vital signs, skin temperature, galvanic skin response, and serum cortisol were monitored and analyzed during both procedures. Vital functions were more stable in diazepam‐sedated patients than in the placebo group. This was manifested by less increase in systolic blood pressure, respiration and heart rate. The galvanic skin resistance was increased and serum cortisol values decreased throughout the sedation phase, suggesting a reduced sympathetic arousal. This study indicates that intravenous diazepam sedation enhances patient comfort and improves physiologic safety during periodontal surgery.

ISSN:1049-8885    

DOI:10.1902/jop.1981.52.1.24

出版商:Wiley    

年代:1981

数据来源: WILEY

摘要:

The purpose of the present studywas to find out to what extent subgingival plaque formation may be prevented by toothbrushing. The experiment was carried out on a total of 28 molars in four monkeys. On day 0 all supra‐ and subgingival deposits were removed, and during the following year, the teeth on the left side were carefully brushed three times a week, employing the Bass' method. The right side was kept as unbrushed control. The histologic sections, which were cut in a bucco‐lingual direction, showed that subgingival plaque almost invariably had developed on the unbrushed teeth. Although all of the brushed teeth were free of subgingival plaque, a mild to moderate cellular infiltration prevailed for some distance below the gingival margin. These inflammatory reactions were assumed to have been induced by the bristles of the toothbrush, which were shown to penetrate as far as 0.9 mm below the gingival margin, when employing the Bass method. It was concluded that subgingival plaque formation can be prevented in areas accessible to the toothbrush.

ISSN:1049-8885    

DOI:10.1902/jop.1981.52.1.30

出版商:Wiley    

年代:1981

数据来源: WILEY

摘要:

Certain featuresof malocclusion considered important in relation to periodontal health were analyzed in a study of 300 subjects. It was found that plaque and gingival inflammation were not related to vertical incisor overbite, horizontal incisor overjet or posterior cuspal interdigitation. Individual tooth irregularity measured as tilting, rotation, displacement and crowding had a low but statistically significant correlation with plaque, calculus and gingival inflammation. However, the study showed that these features of malocclusion are far less important than the extent of plaque and calculus deposits in the development of gingival inflammation.

ISSN:1049-8885    

DOI:10.1902/jop.1981.52.1.35

出版商:Wiley    

年代:1981

数据来源: WILEY

摘要:

The purposeof this investigation was to determine the prevalence of the palato‐gingival groove in maxillary incisor teeth and the health status of the lingual periodontal tissues adjacent to maxillary incisor teeth with and without the grooves. A total of 531 individuals aged 17 to 35 years were examined for the presence or absence of palato‐gingival grooves in their maxillary incisor teeth. A Plaque Index (PlI), Gingival Index (GI), and Periodontal Disease Index (PDI) were recorded for the lingual aspect of the four maxillary incisors. Tooth mobility was also recorded. The prevalence of the palato‐gingival grooves in the 531 individuals examined was 8.5%. Of the 2,099 maxillary incisor teeth examined, 2.33% had a palato‐gingival groove. Most of the palato‐gingival grooves (93.8%) were in maxillary lateral incisor teeth. Statistical analyses revealed no differences in groove prevalence on the basis of sex or race. Results of the study also indicate that the palato‐gingival groove is associated with poorer periodontal health as measured by the GI and PDI and more plaque accumulation as measured with the PlI.

ISSN:1049-8885    

DOI:10.1902/jop.1981.52.1.41

出版商:Wiley    

年代:1981

数据来源: WILEY

摘要:

Afilter whichcan be used for the collection of osseous coagulum is described. The filter is a stainless steel screen in a plastic housing which does not require the addition of cloth or membrane filters. It is compact, autoclavable, and reusable.

ISSN:1049-8885    

DOI:10.1902/jop.1981.52.1.45

出版商:Wiley    

年代:1981

数据来源: WILEY