Abstract:
BACKGROUND:The use of nanoparticles of graft materials may lead to breakthrough applications for periodontal regeneration. However, due to their small particle size, nanoparticles may be eliminated from periodontal defects by phagocytosis. In an attempt to improve nanoparticle retention in periodontal defects, the present in vivo study uses scanning electron microscopy (SEM) to evaluate the potential of micrograft particles of β-tricalcium phosphate (β-TCP) to enhance the binding and retention of nanoparticles of hydroxyapatite (nHA) on EDTA-treated and non-treated root surfaces in periodontal defects after 14 days of healing. METHODS:Sixty patients having at least two hopeless periodontally affected teeth designated for extraction were randomly divided into four treatment groups (15 patients per group). Patients in group 1 had selected periodontal intrabony defects grafted with nHA of particle size 10 to 100 nm. Patients in group 2 were treated in a similar manner but had the affected roots etched for 2 minutes with a neutral 24% EDTA gel before grafting of the associated vertical defects with nHA. Patients in group 3 had the selected intrabony defects grafted with a composite graft consisting of equal volumes of nHA and β-TCP (particle size 63 to 150 nm). Patients in group 4 were treated as in group 3 but the affected roots were etched with neutral 24% EDTA as in group 2. For each of the four groups, one tooth was extracted immediately, and the second tooth was extracted after 14 days of healing for SEM evaluation. RESULTS:Fourteen days after surgery, all group 1 samples were devoid of any nanoparticles adherent to the root surfaces. Group 2 showed root surface areas 44.7% covered by a single layer of clot-blended grafted particles 14 days following graft application. After 14 days, group 3 samples appeared to retain fibrin strands devoid of grafted particles. Immediately extracted root samples of group 4 had adherent graft particles that covered a considerable area of the root surfaces (88.6%). Grafted particles appeared to cover all samples in a multilayered pattern. After 14 days, the group 4 extracted samples showed multilayered fibrin-covered nano/micro-sized graft particles adherent to the root surfaces (78.5%). CONCLUSION:The use of a composite graft consisting of nHA and microsized β-TCP after root surface treatment with 24% EDTA may be a suitable method to improve nHA retention in periodontal defects with subsequent graft bioreactivity.
journal_name
J Periodontoljournal_title
Journal of periodontologyauthors
Gamal AY,Iacono VJdoi
10.1902/jop.2013.120701subject
Has Abstractpub_date
2013-12-01 00:00:00pages
1730-9issue
12eissn
0022-3492issn
1943-3670journal_volume
84pub_type
杂志文章,随机对照试验abstract::During the acute phase of periodontal disease, as many as 60% of the cells of the junctional epithelium may be accounted for by polymorphonuclear cells (PMNs). It is generally accepted that these cells play a dominant role in the destruction of connective tissue by virtue of the proteinases they release and the free o...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1986.57.7.422
更新日期:1986-07-01 00:00:00
abstract::Ultrasonic scalers may be operated at different power settings which may influence the final therapeutic result. The displacement amplitude of the scaling tip may affect scaling efficiency or the degree of root surface damage. This investigation aimed to determine whether there was any difference in periodontal healin...
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.1995.66.9.756
更新日期:1995-09-01 00:00:00
abstract::The objective of this study was to evaluate if the biologic membrane utilized for GTR can be impregnated by tetracycline hydrochloride and if the chemotherapeutic agent, once impregnated, can be released in minimal inhibitory concentrations for a period compatible with clinical application. Initially, an in vitro stud...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1995.66.11.978
更新日期:1995-11-01 00:00:00
abstract::This study tested the hypothesis that severe periodontitis in persons with non-insulin-dependent diabetes mellitus (NIDDM) increases the risk of poor glycemic control. Data from the longitudinal study of residents of the Gila River Indian Community were analyzed for dentate subjects aged 18 to 67, comprising all those...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1996.67.10s.1085
更新日期:1996-10-01 00:00:00
abstract:BACKGROUND:Efficient methods to treat persistent pockets during periodontal maintenance therapy (PMT) require further investigation. The hypothesis of this randomized controlled clinical trial was that local application of enamel matrix derivative (EMD) added to papilla reflection/root preparation (PR/RP) could enhance...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1002/JPER.19-0623
更新日期:2020-11-01 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:BACKGROUND:Several anti-inflammatory drugs have been used to reduce pain and discomfort after periodontal surgeries. This study evaluates the efficacy of using etoricoxib and dexamethasone for pain prevention after open-flap debridement surgery. METHODS:For this prospective, double-masked, crossover, placebo-controlle...
journal_title:Journal of periodontology
pub_type: 杂志文章,随机对照试验
doi:10.1902/jop.2010.100059
更新日期:2010-08-01 00:00:00
abstract::Interdental gingival tissues are designated inflamed on the basis of their color and bleeding after stimulation. Gingival bleeding was previously shown in histological studies to indicate the presence of inflammatory lesions. The present study was undertaken to determine associations between bleeding and visual signs ...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1988.59.11.722
更新日期:1988-11-01 00:00:00
abstract:BACKGROUND:It is hypothesized that levels of advanced glycation end products (AGEs) are higher in the gingival crevicular fluid (GCF) of chronic periodontitis (CP) patients with type-2 diabetes mellitus (type-2 DM) than controls (systemically healthy individuals without CP. The aim was to assess the levels of AGEs in t...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1002/JPER.19-0209
更新日期:2020-03-01 00:00:00
abstract::Temporary splints to immobilize periodontally diseased teeth were made by fiber glass bonded and attached to the teeth with acid-etch technique with BIS-GMA resin. Twenty-one splints were made. Observation time ranged from 4 to 14 months. During the observation only one splint fractured and was repaired while the othe...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1979.50.4.193
更新日期:1979-04-01 00:00:00
abstract::The relationship between diabetes mellitus and oral health status was determined in Pima Indians from the Gila River Indian Community in Arizona. This tribe of native Americans has the world's highest reported incidence and prevalence of non-insulin-dependent (type 2) diabetes mellitus. The probing attachment level, a...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1991.62.2.123
更新日期:1991-02-01 00:00:00
abstract::This short report offers solutions for three common clinical problems. Based on their experience, the authors suggest using a "spoon" type partial denture for the temporary replacement of maxillary anterior teeth. The denture is unique in that it has no clasps and does not contact the marginal gingiva. Also, conventio...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1984.55.6.341
更新日期:1984-06-01 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::This study describes the histologic characteristics of root surfaces of primary teeth from children with prepubertal periodontitis (PP). Fifteen primary teeth from 4 children with PP, and 2 control primary teeth from 2 healthy children were examined. Light microscopy revealed normal root surfaces in the control teeth....
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1998.69.3.337
更新日期:1998-03-01 00:00:00
abstract:BACKGROUND:The purpose of these clinical guidelines, commissioned by the Italian Society of Periodontology and compiled with the tools and instructions of the Appraisal of Guidelines for Research and Evaluation (AGREE) collaboration, was to determine, in terms of efficacy, complications, and patient opinions, the most ...
journal_title:Journal of periodontology
pub_type: 杂志文章,实务指引
doi:10.1902/jop.2008.080266
更新日期:2008-12-01 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 preliminary in vitro study, presented at the General Session of the International and American Association for Dental Research in 2010 (Barcelona, Spain), evaluates whether three-dimensional (3D) optical scanning and subsequent superimposing procedures could be used for reproducible volumetric evaluatio...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2011.110143
更新日期:2012-01-01 00:00:00
abstract:BACKGROUND:This study tests the effectiveness of hydroxyapatite and collagen bone blocks of equine origin (eHAC), infused with recombinant human platelet-derived growth factor-BB (rhPDGF-BB), to augment localized posterior mandibular defects in non-human primates (Papio hamadryas). METHODS:Bilateral critical-sized def...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2012.110478
更新日期:2012-07-01 00:00:00
abstract::Gingival biopsies of the mesial papilla area of 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 s...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1987.58.12.837
更新日期:1987-12-01 00:00:00
abstract:BACKGROUND:A disintegrin and metalloproteinase 28 (ADAM28) is considered to be the possible virulence gene for congenital hypoplasia of tooth root. Periodontal ligament stem cells (PDLSCs) are regarded as playing crucial roles in the developing process of the periodontium and are generally used in dental regenerative m...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2010.090703
更新日期:2010-06-01 00:00:00
abstract::This study examined the relationships between plasma and saliva concentrations of phenytoin and 5-(4-hydroxyphenyl)-5-phenylhydantoin (HPPH), the major metabolite of phenytoin in man, and the prevalence and severity of gingival overgrowth. Thirty-six adult epileptic patients who had been receiving phenytoin for greate...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1996.67.6.597
更新日期:1996-06-01 00:00:00
abstract:BACKGROUND:Previous findings of an association between 25-hydroxyvitamin D [25(OH)D] concentrations and periodontal disease may be partially explained by the antimicrobial properties of vitamin D. To the best of the authors' knowledge, no study has investigated the association between 25(OH)D and pathogenic oral bacter...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2013.130518
更新日期:2014-07-01 00:00:00
abstract:BACKGROUND:The immediate loading treatment concept can be successfully used in implant dentistry. Bone cells migrate onto the implant surface and establish a stable anchorage on the titanium surface. When implants are loaded immediately after surgery, there is a high long-term success rate of the implant-supported reco...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2005.76.11.1823
更新日期:2005-11-01 00:00:00
abstract:BACKGROUND:The purpose of this multicenter randomly controlled clinical trial was to compare two acellular dermal matrix (ADM) materials produced by different processing techniques, freeze-dried (FDADM) and solvent-dehydrated (SDADM) ADM, in their ability to correct Miller Class I and II recession defects. METHODS:Eig...
journal_title:Journal of periodontology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1902/jop.2014.140198
更新日期:2014-12-01 00:00:00
abstract::The feasibility of a new combined collagen gel-autolysed antigen-extracted allogeneic bone implant was tested. Its effect on gaining new attachment in surgically created defects in four dogs was evaluated over 24 weeks. As controls, sites receiving implants of the bone implant alone, nonimplanted and untreated defects...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1986.57.2.84
更新日期:1986-02-01 00:00:00
abstract:BACKGROUND:Gaucher's disease (GD) is a lysosomal storage disease with a high incidence in Ashkenazi Jews. The disease is caused by an autosomally recessive inherited deficiency of the lysosomal enzyme glucocerebrosidase, leading to the accumulation of glucocerebroside in macrophages. The lipid-laden macrophages, called...
journal_title:Journal of periodontology
pub_type: 杂志文章,评审
doi:10.1902/jop.2007.060341
更新日期:2007-04-01 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::Some confusion exists in the literature whether correlations exist between gingivitis severity and plaque levels as measured by the corresponding indices. The results of a clinical trial and a re-analysis of literature data indicate that a strong statistical correlation exists between the Löe-Silness Gingival Index va...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1989.60.4.172
更新日期:1989-04-01 00:00:00
abstract:BACKGROUND:The aim of this study is to investigate effects of strontium ranelate (SR) on alveolar bone loss (ABL) in rats with experimental periodontitis. METHODS:Forty Wistar rats were randomly divided into five groups: 1) control (n = 8); 2) ligated (n = 8); 3) 300 mg/kg SR (SR300, n = 8); 4) 625 mg/kg SR (SR625, n ...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.2016.160227
更新日期:2017-02-01 00:00:00
abstract::This study was undertaken to determine the extent of in vitro penetration of E. coli endotoxin into the root cementum of periodontally healthy and diseased teeth. Freshly extracted teeth were washed in distilled water, scaled and divided into two groups of 16 teeth each. Nine diseased and five healthy teeth in the fir...
journal_title:Journal of periodontology
pub_type: 杂志文章
doi:10.1902/jop.1982.53.6.368
更新日期:1982-06-01 00:00:00