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Journal of Periodontal & Implant Science

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https://www.readbyqxmd.com/read/29770241/methods-for-quantitative-measurement-of-tooth-wear-using-the-area-and-volume-of-virtual-model-cusps
#1
Soo-Hyun Kim, Young-Seok Park, Min-Kyoung Kim, Sulhee Kim, Seung-Pyo Lee
Purpose: Clinicians must examine tooth wear to make a proper diagnosis. However, qualitative methods of measuring tooth wear have many disadvantages. Therefore, this study aimed to develop and evaluate quantitative parameters using the cusp area and volume of virtual dental models. Methods: The subjects of this study were the same virtual models that were used in our former study. The same age group classification and new tooth wear index (NTWI) scoring system were also reused...
April 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29770240/diagnosis-and-prediction-of-periodontally-compromised-teeth-using-a-deep-learning-based-convolutional-neural-network-algorithm
#2
Jae-Hong Lee, Do-Hyung Kim, Seong-Nyum Jeong, Seong-Ho Choi
Purpose: The aim of the current study was to develop a computer-assisted detection system based on a deep convolutional neural network (CNN) algorithm and to evaluate the potential usefulness and accuracy of this system for the diagnosis and prediction of periodontally compromised teeth (PCT). Methods: Combining pretrained deep CNN architecture and a self-trained network, periapical radiographic images were used to determine the optimal CNN algorithm and weights...
April 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29770239/comparison-of-marginal-bone-loss-between-internal-and-external-connection-dental-implants-in-posterior-areas-without-periodontal-or-peri-implant-disease
#3
Dae-Hyun Kim, Hyun Ju Kim, Sungtae Kim, Ki-Tae Koo, Tae-Il Kim, Yang-Jo Seol, Yong-Moo Lee, Young Ku, In-Chul Rhyu
Purpose: The purpose of this retrospective study with 4-12 years of follow-up was to compare the marginal bone loss (MBL) between external-connection (EC) and internal-connection (IC) dental implants in posterior areas without periodontal or peri-implant disease on the adjacent teeth or implants. Additional factors influencing MBL were also evaluated. Methods: This retrospective study was performed using dental records and radiographic data obtained from patients who had undergone dental implant treatment in the posterior area from March 2006 to March 2007...
April 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29770238/charlson-comorbidity-index-as-a-predictor-of-periodontal-disease-in-elderly-participants
#4
Jae-Hong Lee, Jung-Kyu Choi, Seong-Nyum Jeong, Seong-Ho Choi
Purpose: This study investigated the validity of the Charlson comorbidity index (CCI) as a predictor of periodontal disease (PD) over a 12-year period. Methods: Nationwide representative samples of 149,785 adults aged ≥60 years with PD (International Classification of Disease, 10th revision [ICD-10], K052-K056) were derived from the National Health Insurance Service-Elderly Cohort during 2002-2013. The degree of comorbidity was measured using the CCI (grade 0-6), including 17 diseases weighted on the basis of their association with mortality, and data were analyzed using multivariate Cox proportional-hazards regression in order to investigate the associations of comorbid diseases (CDs) with PD...
April 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29770237/quantitative-measurement-of-peri-implant-bone-defects-using-optical-coherence-tomography
#5
Sulhee Kim, Se-Ryong Kang, Hee-Jung Park, Bome Kim, Tae-Il Kim, Won-Jin Yi
Purpose: The purpose of this study was to visualize and identify peri-implant bone defects in optical coherence tomography (OCT) images and to obtain quantitative measurements of the defect depth. Methods: Dehiscence defects were intentionally formed in porcine mandibles and implants were simultaneously placed without flap elevation. Only the threads of the fixture could be seen at the bone defect site in the OCT images, so the depth of the peri-implant bone defect could be measured through the length of the visible threads...
April 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29770236/magnoliae-cortex-and-maize-modulate-porphyromonas-gingivalis-induced-inflammatory-reactions
#6
Jae-Yoon Kim, Kyoung-Hwa Kim, Eun-Hye Kwag, Yang Jo Seol, Yong Moo Lee, Young Ku, In-Chul Rhyu
Purpose: The aim of this study was to evaluate the capacity of single and combined applications of the bark of the stems and roots of Magnolia officinalis Rehd. et Wils. (Magnoliae Cortex) and Zea mays L. (maize) to modulate inflammation in RAW 264.7 cells stimulated with Porphyromonas gingivalis . Methods: RAW 264.7 cells were stimulated with P. gingivalis , and Magnoliae Cortex and/or maize was added. Cytotoxicity and the capacity to modulate inflammation were determined with a methylthiazol tetrazolium (MTT) assay, nitrite production, enzyme-linked immunosorbent assay (ELISA), and western blotting...
April 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29770235/hopes-of-becoming-the-bridge-for-north-korean-scientists-to-the-world
#7
EDITORIAL
Tae-Il Kim
No abstract text is available yet for this article.
April 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29535891/-porphyromonas-gingivalis-accelerates-atherosclerosis-through-oxidation-of-high-density-lipoprotein
#8
Hyun-Joo Kim, Gil Sun Cha, Hyung-Joon Kim, Eun-Young Kwon, Ju-Youn Lee, Jeomil Choi, Ji-Young Joo
Purpose: The aim of this study was to evaluate the ability of Porphyromonas gingivalis ( P. gingivalis ) to induce oxidation of high-density lipoprotein (HDL) and to determine whether the oxidized HDL induced by P. gingivalis exhibited altered antiatherogenic function or became proatherogenic. Methods: P. gingivalis and THP-1 monocytes were cultured, and the extent of HDL oxidation induced by P. gingivalis was evaluated by a thiobarbituric acid-reactive substances (TBARS) assay...
February 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29535890/clinical-and-microbiological-effects-of-egg-yolk-antibody-against-porphyromonas-gingivalis-as-an-adjunct-in-the-treatment-of-moderate-to-severe-chronic-periodontitis-a-randomized-placebo-controlled-clinical-trial
#9
Yan Xu, Tshepiso Selerio-Poely, Xingru Ye
Purpose: To evaluate the clinical and microbiological effects of the local use of egg yolk immunoglobulin against Porphyromonas gingivalis (anti- P.g. IgY) as an adjunct to scaling and root planing (SRP) in the treatment of moderate to severe chronic periodontitis. Methods: This was a randomized, placebo-controlled, double-blind trial involving 60 systematically healthy patients with moderate to severe chronic periodontitis. Subjects (n=20/group) were randomly assigned to receive SRP combined with subgingival irrigation of anti- P...
February 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29535889/effects-of-1-25-dihydroxyvitamin-d-3-on-the-differentiation-of-mc3t3-e1-osteoblast-like-cells
#10
Hyun-Soo Kim, Mingzhen Zheng, Do-Kyung Kim, Won-Pyo Lee, Sang-Joun Yu, Byung-Ock Kim
Purpose: The purpose of this study was to evaluate the effects of 1,25-dihydroxyvitamin D3 on the proliferation, differentiation, and matrix mineralization of MC3T3-E1 osteoblast-like cells in vitro. Methods: MC3T3-E1 osteoblastic cells and 1,25-dihydroxyvitamin D3 were prepared. Cytotoxic effects and osteogenic differentiation were evaluated using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, alkaline phosphatase (ALP) activity assay, ALP staining, alizarin red S staining, and reverse transcription-polymerase chain reaction (RT-PCR) for osteogenic differentiation markers such as ALP, collagen type I (Col-I), osteocalcin (OCN), vitamin D receptor (VDR), and glyceraldehyde 3-phosphate dehydrogenase...
February 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29535888/effective-professional-intraoral-tooth-brushing-instruction-using-the-modified-plaque-score-a-randomized-clinical-trial
#11
Se-Ho Park, Sung-Hee Cho, Ji-Young Han
Purpose: The purpose of this study was to evaluate the efficacy of the modified plaque score (MPS) for assessing the oral hygiene status of periodontitis patients. Methods: A total of 116 patients were included in this study. After evaluation of the Löe and Silness gingival index (GI), Silness and Löe plaque index (PlI), O'Leary plaque control record (PCR), and MPS, patients were randomly assigned to either a conventional tooth brushing instruction (C-TBI) group (n=56) or a professional intraoral tooth brushing instruction (P-TBI) group (n=60)...
February 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29535887/an-in-vitro-model-of-fusobacterium-nucleatum-and-porphyromonas-gingivalis-in-single-and-dual-species-biofilms
#12
Lívia Jacovassi Tavares, Marlise Inêz Klein, Beatriz Helena Dias Panariello, Erica Dorigatti de Avila, Ana Cláudia Pavarina
Purpose: The goal of this study was to develop and validate a standardized in vitro pathogenic biofilm attached onto saliva-coated surfaces. Methods: Fusobacterium nucleatum (F. nucleatum) and Porphyromonas gingivalis (P. gingivalis) strains were grown under anaerobic conditions as single species and in dual-species cultures. Initially, the bacterial biomass was evaluated at 24 and 48 hours to determine the optimal timing for the adhesion phase onto saliva-coated polystyrene surfaces...
February 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29535886/trends-in-the-utilization-of-dental-outpatient-services-affected-by-the-expansion-of-health-care-benefits-in-south-korea-to-include-scaling-a-6-year-interrupted-time-series-study
#13
Hee-Jung Park, Jun Hyup Lee, Sujin Park, Tae-Il Kim
Purpose: This study utilized a strong quasi-experimental design to test the hypothesis that the implementation of a policy to expand dental care services resulted in an increase in the usage of dental outpatient services. Methods: A total of 45,650,000 subjects with diagnoses of gingivitis or advanced periodontitis who received dental scaling were selected and examined, utilizing National Health Insurance claims data from July 2010 through November 2015. We performed a segmented regression analysis of the interrupted time-series to analyze the time-series trend in dental costs before and after the policy implementation, and assessed immediate changes in dental costs...
February 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29535885/don-t-take-following-the-guidelines-for-granted
#14
EDITORIAL
Tae-Il Kim
No abstract text is available yet for this article.
February 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29333326/evaluation-of-the-periodontal-regenerative-properties-of-patterned-human-periodontal-ligament-stem-cell-sheets
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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