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Journal of Periodontal & Implant Science

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https://www.readbyqxmd.com/read/29333326/evaluation-of-the-periodontal-regenerative-properties-of-patterned-human-periodontal-ligament-stem-cell-sheets
#1
Joong-Hyun Kim, Seok-Yeong Ko, Justin Ho Lee, Deok-Ho Kim, Jeong-Ho Yun
Purpose: The aim of this study was to determine the effects of patterned human periodontal ligament stem cell (hPDLSC) sheets fabricated using a thermoresponsive substratum. Methods: In this study, we fabricated patterned hPDLSC sheets using nanotopographical cues to modulate the alignment of the cell sheet. Results: The hPDLSCs showed rapid monolayer formation on various surface pattern widths. Compared to cell sheets grown on flat surfaces, there were no significant differences in cell attachment and growth on the nanopatterned substratum...
December 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29333325/physicochemical-characterization-of-porcine-bone-derived-grafting-material-and-comparison-with-bovine-xenografts-for-dental-applications
#2
Jung Heon Lee, Gyu Sung Yi, Jin Woong Lee, Deug Joong Kim
Purpose: The physicochemical properties of a xenograft are very important because they strongly influence the bone regeneration capabilities of the graft material. Even though porcine xenografts have many advantages, only a few porcine xenografts are commercially available, and most of their physicochemical characteristics have yet to be reported. Thus, in this work we aimed to investigate the physicochemical characteristics of a porcine bone grafting material and compare them with those of 2 commercially available bovine xenografts to assess the potential of xenogenic porcine bone graft materials for dental applications...
December 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29333324/ridge-preservation-using-basic-fibroblast-growth-factor-2-and-collagenated-biphasic-calcium-phosphate-in-beagle-dogs
#3
Byungjin Sohn, Minkyoon Hwang, Sungtae Kim, Hyeong-Il Kim, Young Ku
Purpose: The aim of this study was to evaluate volumetric and histologic changes in edentulous alveolar ridge areas after ridge preservation using basic fibroblast growth factor-2 (bFGF-2) in combination with collagenated biphasic calcium phosphate (BCP). Methods: The experiments were performed in 6 adult male beagle dogs. The following 3 groups were created: 1) ridge preservation with bFGF-2 and collagenated BCP (experimental group), 2) ridge preservation with collagenated BCP (positive control group), and 3) a negative control group in which no ridge preservation procedure was performed...
December 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29333323/alveolar-ridge-preservation-with-an-open-healing-approach-using-single-layer-or-double-layer-coverage-with-collagen-membranes
#4
Ho-Keun Choi, Hag-Yeon Cho, Sung-Jo Lee, In-Woo Cho, Hyun-Seung Shin, Ki-Tae Koo, Hyun-Chang Lim, Jung-Chul Park
Purpose: The aim of this prospective pilot study was to compare alveolar ridge preservation (ARP) procedures with open-healing approach using a single-layer and a double-layer coverage with collagen membranes using radiographic and clinical analyses. Methods: Eleven molars from 9 healthy patients requiring extraction of the maxillary or mandibular posterior teeth were included and allocated into 2 groups. After tooth extraction, deproteinized bovine bone mineral mixed with 10% collagen was grafted into the socket and covered either with a double-layer of resorbable non-cross-linked collagen membranes (DL group, n=6) or with a single-layer (SL group, n=5)...
December 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29333322/a-randomized-controlled-clinical-study-of-periodontal-tissue-regeneration-using-an-extracellular-matrix-based-resorbable-membrane-in-combination-with-a-collagenated-bovine-bone-graft-in-intrabony-defects
#5
Sulhee Kim, Hyeyoon Chang, Jin Wook Hwang, Sungtae Kim, Ki-Tae Koo, Tae-Il Kim, Yang-Jo Seol, Yong-Moo Lee, Young Ku, Jong-Ho Lee, In-Chul Rhyu
Purpose: The purpose of this study was to investigate the feasibility of regenerative therapy with a collagenated bone graft and resorbable membrane in intrabony defects, and to evaluate the effects of the novel extracellular matrix (ECM)-based membrane clinically and radiologically. Methods: Periodontal tissue regeneration procedure was performed using an ECM-based resorbable membrane in combination with a collagenated bovine bone graft in intrabony defects around the teeth and implants...
December 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29333321/periodontal-wound-healing-following-reciprocal-autologous-root-transplantation-in-class-iii-furcation-defects
#6
Naoshi Takeuchi, Yoshinori Shirakata, Yukiya Shinohara, Kotaro Sena, Kazuyuki Noguchi
Purpose: Furcation involvement in the molars is difficult to treat, and has been recognized as a risk factor for tooth loss. Although periodontal regenerative therapies, including guided tissue regeneration and various types of bone grafts, have been applied to furcation defects, the effects of these treatments are limited, especially in large class III furcation defects. The purpose of this pilot study was to investigate the effect of reciprocal autologous root transplantation on periodontal wound healing and regeneration in class III furcation defects in dogs...
December 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29333320/our-recap-for-happy-new-year
#7
EDITORIAL
Tae-Il Kim
No abstract text is available yet for this article.
December 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29093990/determination-of-the-critical-diabetes-duration-in-a-streptozotocin-induced-diabetic-rat-calvarial-defect-model-for-experimentation-regarding-bone-regeneration
#8
Hyun Ju Kim, Bo Hyun Jung, Ki-Yeon Yoo, Jin-Woo Han, Heung-Sik Um, Beom-Seok Chang, Jae-Kwan Lee
Purpose: The purpose of this study was to determine the critical diabetes duration in a streptozotocin (STZ)-induced diabetic rat calvarial defect model for experimentation regarding bone regeneration by evaluating the association between diabetes duration and bone healing capacity through histological and radiographic analyses. Methods: Experimental diabetes was induced in 50 of 60 rats by an STZ injection. The rats were divided into 5 groups, including a control group (group 1), according to diabetes durations of 0, 2, 4, 6, and 8 weeks, respectively...
October 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29093989/periodontal-inflamed-surface-area-as-a-novel-numerical-variable-describing-periodontal-conditions
#9
Shin-Young Park, Soyeon Ahn, Jung-Tae Lee, Pil-Young Yun, Yun Jong Lee, Joo Youn Lee, Yeong Wook Song, Yoon-Seok Chang, Hyo-Jung Lee
Purpose: A novel index, the periodontal inflamed surface area (PISA), represents the sum of the periodontal pocket depth of bleeding on probing (BOP)-positive sites. In the present study, we evaluated correlations between PISA and periodontal classifications, and examined PISA as an index integrating the discrete conventional periodontal indexes. Methods: This study was a cross-sectional subgroup analysis of data from a prospective cohort study investigating the association between chronic periodontitis and the clinical features of ankylosing spondylitis...
October 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29093988/bone-level-implants-placed-in-the-anterior-maxilla-an-open-label-single-arm-observational-study
#10
EnFeng Gao, Wei-Hong Hei, Jong-Chul Park, KangMi Pang, Sun Kyung Kim, Bongju Kim, Soung-Min Kim, Jong-Ho Lee
Purpose: This study assessed marginal bone remodeling and soft tissue esthetics after the loading of single bone-level implants in the anterior maxilla. Methods: An open, single-arm observational clinical trial with 3 years of follow-up was performed, including 22 implants. The patients presented with a single tooth gap in the anterior maxilla (tooth positions 14-24), with natural or restored adjacent teeth. An implant was placed at least 8 weeks post-extraction and healed submerged for 6 weeks...
October 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29093987/targeting-the-epitope-spreader-pep19-by-na%C3%A3-ve-human-cd45ra-regulatory-t-cells-dictates-a-distinct-suppressive-t-cell-fate-in-a-novel-form-of-immunotherapy
#11
Hyun-Joo Kim, Gil Sun Cha, Ji-Young Joo, Juyoun Lee, Sung-Jo Kim, Jeongae Lee, So Youn Park, Jeomil Choi
Purpose: Beyond the limited scope of non-specific polyclonal regulatory T cell (Treg)-based immunotherapy, which depends largely on serendipity, the present study explored a target Treg subset appropriate for the delivery of a novel epitope spreader Pep19 antigen as part of a sophisticated form of immunotherapy with defined antigen specificity that induces immune tolerance. Methods: Human polyclonal CD4(+)CD25(+)CD127(lo-) Tregs (127-Tregs) and naïve CD4(+)CD25(+)CD45RA(+) Tregs (45RA-Tregs) were isolated and were stimulated with target peptide 19 (Pep19)-pulsed dendritic cells in a tolerogenic milieu followed by ex vivo expansion...
October 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29093986/static-magnetic-fields-promote-osteoblastic-cementoblastic-differentiation-in-osteoblasts-cementoblasts-and-periodontal-ligament-cells
#12
Eun-Cheol Kim, Jaesuh Park, Il Keun Kwon, Suk-Won Lee, Su-Jung Park, Su-Jin Ahn
Purpose: Although static magnetic fields (SMFs) have been used in dental prostheses and osseointegrated implants, their biological effects on osteoblastic and cementoblastic differentiation in cells involved in periodontal regeneration remain unknown. This study was undertaken to investigate the effects of SMFs (15 mT) on the osteoblastic and cementoblastic differentiation of human osteoblasts, periodontal ligament cells (PDLCs), and cementoblasts, and to explore the possible mechanisms underlying these effects...
October 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29093985/trends-in-the-incidence-of-tooth-extraction-due-to-periodontal-disease-results-of-a-12-year-longitudinal-cohort-study-in-south-korea
#13
Jae-Hong Lee, Jin-Young Oh, Jung-Kyu Choi, Yeon-Tae Kim, Ye-Sol Park, Seong-Nyum Jeong, Seong-Ho Choi
Purpose: This study evaluated trends in tooth extraction due to acute and chronic periodontal disease (PD) using data from the National Health Insurance Service-National Sample Cohort for 2002-2013. Methods: A random sample of 1,025,340 individuals was selected as a representative sample of the population, and a database (DB) of diagnostic and prescription codes was followed up for 12 years. We used multivariate logistic regression analysis to assess the incidence of total extraction (TE), extraction due to periodontal disease (EPD), and immediate extraction due to periodontal disease (IEPD) according to sociodemographic factors (sex, age, household income, health status, and area of residence)...
October 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29093984/future-endeavors-needed-to-close-the-socioeconomic-gap-in-periodontal-health
#14
EDITORIAL
Tae-Il Kim
No abstract text is available yet for this article.
October 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28861289/effects-of-implant-tilting-and-the-loading-direction-on-the-displacement-and-micromotion-of-immediately-loaded-implants-an-in-vitro-experiment-and-finite-element-analysis
#15
Tsutomu Sugiura, Kazuhiko Yamamoto, Satoshi Horita, Kazuhiro Murakami, Sadami Tsutsumi, Tadaaki Kirita
PURPOSE: The purpose of this study was to investigate the effects of implant tilting and the loading direction on the displacement and micromotion (relative displacement between the implant and bone) of immediately loaded implants by in vitro experiments and finite element analysis (FEA). METHODS: Six artificial bone blocks were prepared. Six screw-type implants with a length of 10 mm and diameter of 4.3 mm were placed, with 3 positioned axially and 3 tilted. The tilted implants were 30° distally inclined to the axial implants...
August 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28861288/prevalence-and-risk-indicators-of-peri-implantitis-in-korean-patients-with-a-history-of-periodontal-disease-a-cross-sectional-study
#16
Mi-Seon Goh, Eun-Jin Hong, Moontaek Chang
PURPOSE: The aim of this study was to analyze the prevalence and risk indicators of peri-implantitis in Korean patients with history of periodontal disease. METHODS: A total of 444 patients with 1,485 implants were selected from patients who had been treated at the Department of Periodontology, Chonbuk National University Dental Hospital between July 2014 and June 2015. A group with a history of peri-implantitis (HP) (370 patients with 1,189 implants) and a group with a current peri-implantitis (CP) (318 patients with 1,004 implants) were created based on the radiographic and clinical assessments of implants...
August 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28861287/marginal-bone-level-changes-in-association-with-different-vertical-implant-positions-a-3-year-retrospective-study
#17
Yeon-Tae Kim, Gyu-Hyung Lim, Jae-Hong Lee, Seong-Nyum Jeong
PURPOSE: To retrospectively evaluate the relationship between the vertical position of the implant-abutment interface and marginal bone loss over 3 years using radiological analysis. METHODS: In total, 286 implant surfaces of 143 implants from 61 patients were analyzed. Panoramic radiographic images were taken immediately after implant installation and at 6, 12, and 36 months after loading. The implants were classified into 3 groups based on the vertical position of the implant-abutment interface: group A (above bone level), group B (at bone level), and group C (below bone level)...
August 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28861286/comparison-of-periodontitis-associated-oral-biofilm-formation-under-dynamic-and-static-conditions
#18
Won Sub Song, Jae-Kwan Lee, Se Hwan Park, Heung-Sik Um, Si Young Lee, Beom-Seok Chang
PURPOSE: The purpose of this study was to compare the characteristics of single- and dual-species in vitro oral biofilms made by static and dynamic methods. METHODS: Hydroxyapatite (HA) disks, 12.7 mm in diameter and 3 mm thick, were coated with processed saliva for 4 hours. The disks were divided into a static method group and a dynamic method group. The disks treated with a static method were cultured in 12-well plates, and the disks in the dynamic method group were cultured in a Center for Disease Control and Prevention (CDC) biofilm reactor for 72 hours...
August 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28861285/pattern-analysis-of-patients-with-temporomandibular-disorders-resulting-from-unilateral-mastication-due-to-chronic-periodontitis
#19
Hye-Mi Jeon, Yong-Woo Ahn, Sung-Hee Jeong, Soo-Min Ok, Jeomil Choi, Ju-Youn Lee, Ji-Young Joo, Eun-Young Kwon
PURPOSE: The purpose of the present study was to perform a pattern analysis in patients with temporomandibular disorder (TMD) resulting from unilateral mastication due to chronic periodontitis. METHODS: Thirty participants with signs or symptoms of TMD who engaged in unilateral mastication due to periodontitis-related discomfort (test group) were selected. Another 30 subjects exhibiting signs or symptoms of TMD resulting from unilateral mastication not due to chronic periodontitis (control group) were also recruited...
August 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28861284/alveolar-socket-preservation-with-demineralised-bovine-bone-mineral-and-a-collagen-matrix
#20
Carlo Maiorana, Pier Paolo Poli, Matteo Deflorian, Tiziano Testori, Federico Mandelli, Heiner Nagursky, Raffaele Vinci
PURPOSE: The aim of the present study was to evaluate the healing of post-extraction sockets following alveolar ridge preservation clinically, radiologically, and histologically. METHODS: Overall, 7 extraction sockets in 7 patients were grafted with demineralised bovine bone mineral and covered with a porcine-derived non-crosslinked collagen matrix (CM). Soft tissue healing was clinically evaluated on the basis of a specific healing index. Horizontal and vertical ridge dimensional changes were assessed clinically and radiographically at baseline and 6 months after implant placement...
August 2017: Journal of Periodontal & Implant Science
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