Abstract:
:A scanning electron microscope and electron probe study was carried out to compare root structure from deep within periodontal pockets with roots exhibiting no periodontal disease. To eliminate the possibility of extraneous ion introduction or deletion, no attempt was made to subject the roots to fixation, embedding, or dehydration prior to sectioning and viewing in the electron microscope. Mineral content and concentration were determined with an electron probe on two specimens per tooth. On one specimen, only the external cemental surface was analyzed. On an adjacent cross section, readings were taken from the surface and at incremental depths into the root. A nonparametric statistical analysis compared diseased with nondiseased roots. The following conclusions can be drawn from the study: (1) Consistent and repeatable qualitative electron probe analyses can be performed on human teeth with minimal specimen preparation. This gives a more accurate assessment, since the integrity of the crystalline structure is not disrupted. (2) Minerals consistently found were P, Ca, Cu, Zn, Mg and Na. They were in similar concentrations throughout the area analyzed. (3) Mg and Cu showed higher values in the nondiseased teeth. (4) There were no differences in concentrations for Ca, P, Zn, and Na between roots exposed to a periodontal pocket and nondiseased roots.
journal_name
J Periodontoljournal_title
Journal of periodontologyauthors
Barton NS,Van Swol RLdoi
10.1902/jop.1987.58.9.634subject
Has Abstractpub_date
1987-09-01 00:00:00pages
634-8issue
9eissn
0022-3492issn
1943-3670journal_volume
58pub_type
杂志文章abstract:BACKGROUND:Earlier studies have shown an association between obesity and periodontitis, which is mediated by cytokine production. The aim of this study is to assess the role of obesity as a modifying factor on periodontal clinical parameters and on circulating proinflammatory cytokine levels in subjects undergoing non-...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2010.100545
更新日期:2011-05-01 00:00:00
abstract::The study design of national surveys of periodontal disease often uses partial-mouth examination protocols to rationalize the need for resources so that the collection of data from a large number of subjects can be achieved within the available means without significantly sacrificing precision and validity. Studies sh...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2011.100638
更新日期:2011-03-01 00:00:00
abstract:BACKGROUND:Caspases are key mediators of apoptosis. Caspase-8 mediates extrinsic, and caspase-9 initiates the intrinsic pathway of apoptosis. Apoptosis Inducing Factor (AIF), a mitochondrial proapoptotic protein, mediates cell death by a caspase-independent process. Because apoptosis is involved in periodontal disease,...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1002/JPER.17-0716
更新日期:2019-03-01 00:00:00
abstract:BACKGROUND:Obesity is considered a risk factor for periodontitis. However, its influence on periodontal therapy has not been clearly determined. The aim of this case-control study is to evaluate the association between adiposity measurements, non-surgical periodontal treatment outcomes, and influencing factors in patie...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2015.140734
更新日期:2015-09-01 00:00:00
abstract::Demineralized bone matrix (DBM) is widely used in the repair of pathologies associated with skeletal defects and periodontal diseases. The present study was directed at establishing in vivo and in vitro models for a quantitative assessment of the osteoinductivity of DBM before clinical use. Athymic mice were used in a...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1997.68.11.1076
更新日期:1997-11-01 00:00:00
abstract:BACKGROUND:A major reason for the success of modern dental implant systems has been the development of implant designs that enhance direct bone-implant interface. Surface roughness has been a factor in this success and different systems have utilized very different implant surface roughness. The major purpose of this s...
journal_title:Journal of periodontology
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1902/jop.2001.72.10.1384
更新日期:2001-10-01 00:00:00
abstract::Several different types of interactions are possible between a chemical, a mixture of chemicals, and associated extrinsic factors (i.e., mechanical irritation) in the oral mucosa. These interactions can be broadly classified as irritative or allergenic in nature. In each case, the pathology usually includes mucosal in...
journal_title:Journal of periodontology
pub_type: 杂志文章,评审
doi:10.1902/jop.1998.69.6.620
更新日期:1998-06-01 00:00:00
abstract::Nineteen young adult Caucasian males had an average Gingival Index Score of 0.47. Each was asked to demonstrate his present method of toothbrushing: thirteen used the scrub method, and six combined the scrub and roll methods. Control gingival tissue specimens were taken from the mandibular left first bicuspid or first...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1978.49.4.163
更新日期:1978-04-01 00:00:00
abstract::Examiner diagnostic accuracy and response times were compared using subtraction and conventional radiography in a dog model. Osseous lesions were induced interproximally and through the mandibular buccal bone interradicularly and radicularly. Standardized preoperative and postoperative conventional radiographs of the ...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1985.56.6.324
更新日期:1985-06-01 00:00:00
abstract::Obtaining predictable root coverage has become an important part of periodontal therapy. The purpose of this study was to compare two techniques of obtaining root coverage. The two techniques were the connective tissue with partial-thickness double pedicle graft and guided tissue regeneration with a bioabsorbable poly...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1997.68.8.779
更新日期:1997-08-01 00:00:00
abstract:BACKGROUND:This study evaluates the influence of platelet-rich plasma derived from bone marrow aspirate (PRP-BMA) on the healing of periodontal fenestration defects in rats. METHODS:Periodontal fenestration defects were surgically created in the mandibles of 40 rats. The animals were randomly divided into two groups, ...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2014.140083
更新日期:2014-12-01 00:00:00
abstract::Strict control of dental plaque accumulation remains the cornerstone of successful maintenance of the treated patient. However, some recurrences of periodontitis appear to take place despite good oral hygiene habits. A proportion of these are likely due to qualitative features of the periodontal microbiota rather than...
journal_title:Journal of periodontology
pub_type: 杂志文章,评审
doi:10.1902/jop.1988.59.7.439
更新日期:1988-07-01 00:00:00
abstract::Specific risk indicators associated with either susceptibility or resistance to severe forms of periodontal disease were evaluated in a cross-section of 1,426 subjects, 25 to 74 years of age, mostly metropolitan dwellers, residing in Erie County, New York, and surrounding areas. The study sample exhibited a wide range...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1994.65.3.260
更新日期:1994-03-01 00:00:00
abstract:BACKGROUND:The aim of this study was to compare the activity of neutrophilic granulocytes in patients with severe periodontitis and patients with gingivitis alone. METHODS:The study population comprised 22 patients with gingivitis and 44 with periodontitis. Samples of gingival crevicular fluid (GCF) were collected fro...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2005.76.6.951
更新日期:2005-06-01 00:00:00
abstract:BACKGROUND:Periodontitis is a multifactorial and infectious disease that may result in significant debilitation. The aim of this study is to exploit two optical coherence tomography (OCT) systems operating in the Fourier domain at different wavelengths, 930 and 1,325 nm, for structural analysis of periodontal tissue in...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2015.150047
更新日期:2015-09-01 00:00:00
abstract::The present study demonstrated that hyperglycemic diabetic rats fed a low-protein (8%) diet maintained an alveolar bone height similar to controls; in contrast, those fed a standard protein diet (24%) had reduced alveolar bone height (P less than 0.05). Euglycemic diabetic and untreated control rats fed low-protein di...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1989.60.5.264
更新日期:1989-05-01 00:00:00
abstract:BACKGROUND:The purpose of this prospective study was to compare the changes in periodontal somatosensory function and microcirculation in patients with periodontitis following initial treatment with scaling and root planing (SRP) with or without adjuvant laser therapy. METHODS:Twenty-four patients suffering from perio...
journal_title:Journal of periodontology
pub_type: 杂志文章,随机对照试验
doi:10.1002/JPER.19-0562
更新日期:2020-10-01 00:00:00
abstract::Periodontal conditions and salivary levels of immunoglobulins sIgA, IgM, and IgG subclass distribution and albumin, quantified by enzyme-linked immunosorbent assay, were determined in 20 patients with Down syndrome and 19 healthy controls. Gingival inflammation was more extensive (P < 0.05) among Down syndrome subject...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1998.69.10.1119
更新日期:1998-10-01 00:00:00
abstract::The purpose of this histologic, histometric, and autoradiographic study was to examine the effect of citric acid conditioning and lyophilized autologous plasma (LAP) application on healing following periodontal flap surgery. Mucoperiosteal flaps were elevated in six rhesus monkeys using the modified Widman flap proced...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1987.58.11.770
更新日期:1987-11-01 00:00:00
abstract:BACKGROUND:The Nd:YAG laser has recently been used in the treatment of periodontal disease. However, although a clinical reduction of probing depth and gingival inflammation to this new approach has been reported, it has not been fully evaluated. Interleukin-1 beta (IL- 1beta), a potent stimulator of bone resorption, h...
journal_title:Journal of periodontology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1902/jop.1999.70.11.1276
更新日期:1999-11-01 00:00:00
abstract:BACKGROUND:Bacterial constituents, such as Gram-negative derived lipopolysaccharide (LPS), can initiate inflammatory bone loss through induction of host-derived inflammatory cytokines. The aim of this study was to establish a model of aggressive inflammatory alveolar bone loss in rats using LPS derived from the periodo...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2007.060321
更新日期:2007-03-01 00:00:00
abstract::The ability to objectively assess periodontal disease activity can significantly affect periodontal therapy. Aspartate aminotransferase (AST) is released extracellularly upon tissue destruction which suggests its potential as a key index in a quantitative assay for evaluating periodontal disease activity. The purpose ...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1996.67.8.733
更新日期:1996-08-01 00:00:00
abstract::The purpose of this single blind clinical study was to determine the effects of two commerical mouthwashes (one containing cetylpyridinium chloride and domiphen bromide and the other containing only cetlypridinium chloride) on existing plaque accumulations. A second purpose was to determine if a residual effect could ...
journal_title:Journal of periodontology
pub_type: 临床试验,杂志文章
doi:10.1902/jop.1976.47.7.419
更新日期:1976-07-01 00:00:00
abstract:BACKGROUND:There are four key studies in the periodontology literature reporting the correlation between supernumerary teeth and aggressive periodontitis. The aim of this study is to detect such a relationship. METHODS:Patients with supernumerary teeth were identified retrospectively from their orthopantomographs and ...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2004.75.11.1458
更新日期:2004-11-01 00:00:00
abstract:BACKGROUND:Previous studies demonstrated significant variability in the histologic biologic width in periodontal health and mild periodontitis. The purpose of this study was to determine whether the previously established dimensions of the biologic width applied to subjects with severe, generalized, chronic periodontit...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2008.080066
更新日期:2008-10-01 00:00:00
abstract::In order to compare the effect of partial demineralization with root planing and partial demineralization of cementum with that of dentin on healing, the ultrastructural morphology of the interface between the layer of human periodontal ligament-derived, fibroblast-like cells (HPF) and the treated root surface was stu...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1995.66.4.267
更新日期:1995-04-01 00:00:00
abstract::Several antibiotics were found to adsorb to saliva-coated enamel and to inhibit in vitro plaque formation by pure cultures of oral bacteria: Actinomyces viscosus, Actinomyces naeslundii and Streptococcus mutans. Tetracycline, minocycline and oxytetracycline adsorbed to the greatest degree, showing 100-fold higher adso...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1983.54.10.580
更新日期:1983-10-01 00:00:00
abstract::The form of periodontitis with onset at puberty and affecting predominantly the first molars and incisors is called juvenile periodontitis (JP). The disease has been the object of intense study because from its analysis may come insights into understanding other, more common, forms of periodontitis. We recently had th...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1985.56.10.602
更新日期:1985-10-01 00:00:00
abstract::Despite the improvement in the patients' oral hygiene, there was no significant decrease in the frequency of bacteremia. There was no significant difference in bacteremia between brushing, flossing, or deplaquing either before or after initial periodontal preparation and plaque control in 21 healthy subjects. Utilizin...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1976.47.12.683
更新日期:1976-12-01 00:00:00
abstract::The case of a family, followed for 5 years and showing an exceptionally high prevalence of Generalized Juvenile Periodontitis (GJP), is presented. Two siblings were affected by a severe form of GJP meanwhile the dycorial twin of one was periodontally healthy. Both the affected siblings showed infection by Actinobacill...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1990.61.9.590
更新日期:1990-09-01 00:00:00