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 porcine jaws. METHODS:Five fresh porcine jaws were sectioned and stored in formalin before OCT analysis. Two- and three-dimensional OCT images of the tooth/gingiva interface were performed, and measurements of the gingival structures were obtained. The 930-nm OCT system operates in the spectral domain, whereas the 1,325-nm system is a swept-source model. Stereomicroscope images, the gold standard, were used for direct comparison. RESULTS:Through image analysis, it is possible to identify the free gingiva and the attached gingiva, the calculus deposition over tooth surfaces, and the subgingival calculus that enables the enlargement of the gingival sulcus. In addition, the gingival thickness and the gingival sulcus depth can be non-invasively measured, varying from 0.8 to 4 mm. CONCLUSIONS:Regarding the ability of the two OCT systems to visualize periodontal structures, the system operating at 1,325 nm shows a better performance, owing to a longer central wavelength that allows deeper tissue penetration. The results with the system at 930 nm can also be used, but some features could not be observed due to its lower penetration depth in the tissue.
journal_name
J Periodontoljournal_title
Journal of periodontologyauthors
Mota CC,Fernandes LO,Cimões R,Gomes ASdoi
10.1902/jop.2015.150047subject
Has Abstractpub_date
2015-09-01 00:00:00pages
1087-94issue
9eissn
0022-3492issn
1943-3670journal_volume
86pub_type
杂志文章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:BACKGROUND:The analgesic and anti-inflammatory efficacy of tenoxicam and meloxicam were evaluated in this double-masked, randomized, prospective study by analyzing pain scores and the need for rescue-analgesic agents following dental implant surgery. METHODS:One hundred patients, in whom 241 dental implants were place...
journal_title:Journal of periodontology
pub_type: 杂志文章,随机对照试验
doi:10.1902/jop.2007.070192
更新日期:2007-12-01 00:00:00
abstract:BACKGROUND:Combined periodontal regenerative technique (CPRT) is a surgical procedure that combines the use of barrier membranes with a filling material in the treatment of periodontal defects. The effectiveness of CPRT has been evaluated in many studies in comparison to GTR with membranes alone, but conflicting result...
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.2002.73.2.158
更新日期:2002-02-01 00:00:00
abstract::The purpose of the study was to compare clinical parameter changes and osseous regeneration in 12 pairs of comparable Class II mandibular molar furcation invasion defects using either a bioabsorbable demineralized laminar bone allograft membrane or a non-resorbable expanded polytetrafluoroethylene (ePTFE) membrane as ...
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.1997.68.7.679
更新日期:1997-07-01 00:00:00
abstract:BACKGROUND:Infection and inflammation induce epigenetic changes that alter gene expression. In periodontal disease, inflammation, and microbial dysbiosis occur, which can lead to compromised barrier function of the gingival epithelia. Here, we tested the hypotheses that infection of cultured human gingival epithelial (...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1002/JPER.20-0262
更新日期:2020-10-01 00:00:00
abstract:BACKGROUND:Peri-implantitis treatments are mainly based on protocols for teeth but have not shown favorable outcomes for implants. The potential role of titanium dissolution products in peri-implantitis necessitate the consideration of material properties in devising treatment protocols. We assessed implant cleaning in...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1002/JPER.20-0186
更新日期:2020-08-26 00:00:00
abstract::The relation between utilization of dental services from community dentists and the extent and severity of alveolar bone loss is reported for a panel of men followed for over 6 years. Oral health data were collected by the Department of Veterans Affairs, Dental Longitudinal Study, which began in 1969 and still continu...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1994.65.5s.551
更新日期:1994-05-01 00:00:00
abstract:BACKGROUND:Peripheral giant cell granuloma (PGCG) is a reactive lesion that occurs on the gingiva or alveolar mucosa and contains numerous giant cells. Its recurrence rate is 10%. Only five cases associated with dental implants have been reported. This case report describes three additional cases with clinical courses ...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2009.090081
更新日期:2009-07-01 00:00:00
abstract::There are only a few long-term investigations on root-resected teeth in the literature. This article is a 10-year review of 28 root-resection cases, which mainly had been used as bridge abutments. The periodontal, prosthetic, and endodontic problems were evaluated. After 10 years a total failure rate of 32% was observ...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1988.59.12.805
更新日期:1988-12-01 00:00:00
abstract::This investigation studied the changes in probing depths and subgingival microbial flora of clinically healthy and diseased sites before and after scaling and root planing. Thirty-six sites in 18 individuals were studied in two groups of patients, Group I (9 patients) had received no periodontal surgery, while group I...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1984.55.7.391
更新日期:1984-07-01 00:00:00
abstract:BACKGROUND:Heme oxygenase (HO)-1 is a stress-inducible protein that confers cytoprotection, but its role in gingiva during cyclosporin A (CsA) therapy is unknown. We used in vivo and in vitro models to investigate the expression of mRNA and protein for HO-1 in gingiva upon CsA treatment. METHODS:Twenty-six male Spragu...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2008.080160
更新日期:2008-11-01 00:00:00
abstract:BACKGROUND:In an attempt to evaluate the influence of cyclosporin A (CsA) on fibroblast metabolism, the phospholipase C beta1, (PLC beta1) nuclear expression was evaluated in fibroblasts from heart transplantation patients treated with CsA who exhibited gingival overgrowth (GO) and from controls. METHODS:PLC beta1 was...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2000.71.11.1722
更新日期:2000-11-01 00:00:00
abstract::A rotation flap for covering denuded single root surfaces with attached gingiva has been described and illustrated. This was performed utilizing a closed wound technique. The single flap provided attached gingiva coverage for a moderate area while a double flap provided coverage for a larger area. Although more attach...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1977.48.1.41
更新日期:1977-01-01 00:00:00
abstract::The plaque control record (O'Leary index) appears to be a commonly used oral hygiene index for assessing oral health skills. This index provides sufficient information for patient education; however, the time involved in data collection reduces its value. Most other indices limit the number of teeth and surfaces and f...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1998.69.10.1176
更新日期:1998-10-01 00:00:00
abstract:BACKGROUND:The present study was designed to evaluate the effect, if any, of citric acid root demineralization in the outcome of subepithelial connective tissue grafts performed to cover localized gingival recessions. METHODS:Thirty-six patients participated, each providing one gingival recession; 19 received citric a...
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.2000.71.4.568
更新日期:2000-04-01 00:00:00
abstract:BACKGROUND:Mucous membrane pemphigoid is a heterogeneous group of autoimmune, subepithelial, blistering diseases. A combination of topical and systemic steroid treatment is often used when managing patients with mucous membrane pemphigoid. The use of systemic steroids presents an increased risk of adverse side effects....
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2010.100095
更新日期:2010-08-01 00:00:00
abstract:BACKGROUND:Only a few studies have examined the association between periodontitis and glycated hemoglobin (HbA1c) levels in individuals without diabetes. The aim of this study is to compare HbA1c levels in individuals without diabetes and with and without periodontitis before and after non-surgical periodontal therapy....
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2014.130661
更新日期:2014-12-01 00:00:00
abstract:BACKGROUND:This meta-analysis was conducted to examine the relationship between periodontal diseases and coronary heart diseases (CHD) and cerebrovascular diseases (CVD) in observational studies. METHODS:This study was based on seven cohort studies and four studies of other designs that met prestated inclusion criteri...
journal_title:Journal of periodontology
pub_type: 杂志文章,meta分析,评审
doi:10.1902/jop.2004.75.8.1046
更新日期:2004-08-01 00:00:00
abstract::A great deal of controversy has existed in the periodontal literature as to whether the site or the subject should be the unit of analysis. Using the site as the unit of analysis assumes that observations of sites within the same subject are independent and ignores between subject variation. The purpose of this report...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1992.63.6.507
更新日期:1992-06-01 00:00:00
abstract::Extracts of corn and some nuts were found to ubiquitously stimulate both adult and newborn cord blood lymphocytes to transform and produce a factor chemotactic for monocytes. This indicates that corn and nuts contain a mitogen and are potential stimulators of the cellular immune response. The exposure of lymphocytes t...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1975.46.9.562
更新日期:1975-09-01 00:00:00
abstract:BACKGROUND:The levels of interleukin-1β (IL-1β) have been reported to be higher in sites with periodontitis than in healthy controls. This may be the result of a more severe inflammation and/or constitutional differences in IL-1β production. Our aim was to test the hypothesis that the level of IL-1β in gingival crevicu...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1999.70.12.1457
更新日期:1999-12-01 00:00:00
abstract:BACKGROUND:Tobacco and some of its volatile and non-volatile components have been found to affect many types of cells including gingival fibroblasts. Since normal gingival fibroblast functioning is fundamental to the maintenance of the periodontal connective tissue, as well as to wound healing, we examined the effect o...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2000.71.3.425
更新日期:2000-03-01 00:00:00
abstract:BACKGROUND:Contradictory results exist regarding influence of apico-coronal implant placement on crestal bone levels. METHODS:Complete charts of patients ≥18 years old with one or more dental implants were included. Demographic, medical, surgical, and prosthetic information was recorded. Implant bone levels were evalu...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2017.160802
更新日期:2017-08-01 00:00:00
abstract:BACKGROUND:Chronic kidney disease (CKD) is a worldwide health problem with increasing prevalence and poor outcomes, including severe cardiovascular disease and renal osteodystrophy. With advances in medical treatment, patients with CKD are living longer and require oral care. The aim of this study is to determine the e...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2009.090379
更新日期:2010-02-01 00:00:00
abstract:BACKGROUND:β-glucuronidase (βG) is one of the enzymes involved in the destruction of non-collagenous components of the extracellular matrix. It is also considered an indicator or predictor of periodontal disease activity. The present study was conducted to determine the presence and the levels of βG activity in gingiva...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2000.71.4.618
更新日期:2000-04-01 00:00:00
abstract::In an earlier report, we examined the relationship of patient-derived clinical and epidemiological variables to the risk for future clinical attachment loss (CAL) in chronic adult periodontitis. We determined that the extent of the patient's existing periodontal disease as measured by mean attachment loss (MAL) and th...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1992.63.4.262
更新日期:1992-04-01 00:00:00
abstract::Twelve gingival samples removed from 6 human volunteers were sectioned in small pieces, parts of which served as uncultured pieces. The remaining pieces were organ cultured for 5 hours in control, compound 48/80, and antihuman IgE media. Uncultured tissues, cultured tissues, and cultured spent media were analyzed spec...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1975.46.3.171
更新日期:1975-03-01 00:00:00
abstract::The sensitivity to tetracycline of 345 bacterial isolates from periodontal lesions was determined. Most species of bacteria, including those thought to be involved in the initiation and progress of destructive periodontal disease, were inhibited in vitro by tetracycline concentrations of 4 to 8 micrograms/ml. This con...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1981.52.10.613
更新日期:1981-10-01 00:00:00
abstract::This study examined for 3 years the changes in periodontal status and the possible correlations with selected subgingival microbiota and diabetic conditions in a group of 16 insulin-dependent diabetes mellitus (IDDM, JD) patients as compared with their 16 healthy cohabiting siblings (HS). JD patients were monitored ev...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1998.69.2.120
更新日期:1998-02-01 00:00:00
abstract:BACKGROUND:The aim of this split-mouth study is to compare long-term (18 to 35 years) periodontal conditions of sites treated with gingival augmentation procedures (GAPs) and untreated homologous contralateral sites. METHODS:Forty-seven patients with 64 sites (test group), with lack of attached gingiva associated with...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2016.160284
更新日期:2016-12-01 00:00:00