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Peri-implantitis

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https://www.readbyqxmd.com/read/29156630/anti-bacteria-and-microecosystem-regulating-effects-of-dental-implant-coated-with-dimethylaminododecyl-methacrylate
#1
Bolei Li, Yang Ge, Yao Wu, Jing Chen, Hockin H K Xu, Minggang Yang, Mingyun Li, Biao Ren, Mingye Feng, Michael D Weir, Xian Peng, Lei Cheng, Xuedong Zhou
The effects of dimethylaminododecyl methacrylate (DMADDM) modified titanium implants on bacterial activity and microbial ecosystem of saliva-derived biofilm were investigated for the first time. Titanium discs were coated with DMADDM solutions at mass fractions of 0 mg/mL (control), 1, 5 and 10 mg/mL, respectively. Biomass accumulation and metabolic activity of biofilms were tested using crystal violet assay and MTT (3-(4,5-Dimethyl-thiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay. 16S rRNA gene sequencing was performed to measure the microbial community...
November 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29152286/bony-spicules-trapped-in-peri-implant-soft-tissue-a-common-unrecognized-finding
#2
Teeratida Sampatanukul, Pravej Serichetaphongse, Pichet Sampatanukul, Atiphan Pimkhaokham
According to the study, there were unexpected tiny bone spicules being inspected in peri-implant soft tissue. These displaced autogenous bone chips were probably presented when preparing implant sites. The displaced bone spicules seemed not induced significant inflammatory reactions; on contrary, defects of specimens and dissolving bone spicules pictures were demonstrated.
November 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/29150129/diagnostic-accuracy-of-4-intraoral-radiographic-techniques-for-misfit-detection-at-the-implant-abutment-joint
#3
Pollyana Darós, Vinícius Cavalcanti Carneiro, Amanda Pasolini Siqueira, Sergio Lins de-Azevedo-Vaz
STATEMENT OF PROBLEM: A misfit or gap at the implant-abutment joint (IAJ) requires detection as it may compromise the health of the peri-implant tissue. However, which radiographic technique provides the most orthogonal relationship between the central beam and the implant/image receptor is unclear. PURPOSE: The purpose of this in vitro study was to evaluate the diagnostic accuracy of 4 intraoral radiographic techniques on misfit detection at the IAJ. MATERIAL AND METHODS: Twenty implants were placed in polyamide jaws, and customized dental implant abutments with a metal collar were installed...
November 15, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29148260/peri-implant-parameters-and-c-reactive-protein-levels-among-patients-with-different-obesity-levels
#4
Fahim Vohra, Fahad Alkhudhairy, Abdulaziz A Al-Kheraif, Zohaib Akram, Fawad Javed
BACKGROUND: It is hypothesized that peri-implant conditions are worse with increasing severity of obesity, because systemic low-grade inflammatory marker (C-reactive protein [CRP]) is higher in severe form of obese individuals. PURPOSE: The aim of the cross-sectional retrospective study was to compare clinical and radiographic peri-implant inflammatory parameters in patients with different levels of obesity and correlate these parameters with CRP levels. MATERIALS AND METHODS: Eighty-four patients who participated in this study were divided into 4 groups: class I obese (group 1), class II obese (group 2), class III obese (group 3), and nonobese individuals (group 4) were included...
November 16, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29148235/assessment-of-interleukin-1%C3%AE-interleukin-6-and-tumor-necrosis-factor-%C3%AE-levels-in-the-peri-implant-sulcular-fluid-among-waterpipe-narghile-smokers-and-never-smokers-with-peri-implantitis
#5
Tariq Abduljabbar, Zohaib Akram, Fahim Vohra, Saman Warnakulasuriya, Fawad Javed
BACKGROUND: It is hypothesized that levels of interleukin (IL)-1β, IL-6 and tumor necrosis factor (TNF)-α are significantly higher in the peri-implant sulcular fluid (PISF) of waterpipe-smokers (WS) compared with never-smokers with peri-implantitis. PURPOSE: The aim of the present convenience sample case-control study was to compare the levels of IL-6, IL-1β, and TNF-α in the PISF of WS and never-smokers with peri-implantitis. MATERIALS AND METHODS: Demographic data was collected using a questionnaire...
November 16, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29148207/esthetic-evaluation-of-implant-supported-single-crowns-the-implant-restoration-esthetic-index-and-patient-perception
#6
Xiachen Li, Bilin Wu, Xiaohui Cheng, Yiming Li, Xin Xie, Feilong Deng
PURPOSE: To test the validity and reliability of a newly developed Implant Restoration Esthetic Index (IREI) and to compare esthetic outcomes reported by patients and professionals. MATERIALS AND METHODS: Ten graduate students and 10 prosthodontists assessed esthetic outcomes of 27 single-tooth implants with the IREI. Six peri-implant soft tissue parameters were measured using visual analog scales: mesial papilla presence, distal papilla presence, gingival trigone, soft tissue curvature, alveolar process deficiency, and soft tissue color and texture, as well as the six crown parameters: crown contour, crown position, crown labial convexity, crown characterization, crown color and translucency, and abutment visibility...
November 17, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29147823/primary-peri-implant-oral-intra-epithelial-neoplasia-carcinoma-in-situ-a-case-report-considering-risk-factors-for-carcinogenesis
#7
Makoto Noguchi, Hiroaki Tsuno, Risa Ishizaka, Kumiko Fujiwara, Shuichi Imaue, Kei Tomihara, Takashi Minamisaka
BACKGROUND: Major risk factors for oral squamous cell carcinoma (SCC) are tobacco smoking, a betel quid chewing habit, and heavy alcohol consumption. However, around 15% of oral SCCs cannot be explained by these risk factors. Although oral SCC associated with dental implants is quite rare, there has been a recent gradual accumulation of reports about it. Here, we report a case of primary peri-implant oral intra-epithelial neoplasia/carcinoma in situ (OIN/CIS) in a woman without the major risk factors for oral SCC...
November 16, 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/29145529/volumetric-bone-measurement-around-dental-implants-using-3d-image-superimposition-a-methodological-and-clinical-pilot-study
#8
Eduardo Aydos Villarinho, André Correia, Alvaro Vigo, Nuno Viriato Ramos, Mário Augusto Pires Vaz, Rosemary Sadami Arai Shinkai
PURPOSE: This study describes the development of a methodology for using three-dimensional (3D) image superimposition to measure volumetric changes in bone level around dental implants in comparison with linear measures. MATERIALS AND METHODS: The sample was comprised of 46 dental implants of 6-mm length and 4.1-mm diameter placed in the posterior maxilla and posterior mandible in 20 patients. All implants received screw-retained single crowns. Radiographic images were taken using cone beam computed tomography (CBCT) and digital periapical radiography after implantation and after 12 and 24 months of functional loading (after crown installation)...
November 16, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29143462/evaluation-of-immediate-implants-augmented-with-autogenous-bone-melatonin-composite-graft-in-the-esthetic-zone-a-randomized-controlled-trial
#9
Hala H A Hazzaa, Naglaa Sh El-Kilani, Shadia Abd-Elhameed Elsayed, Phoebe M Abd El Massieh
PURPOSE: To evaluate the clinical and radiographic outcomes following the application of autogenous bone (ABG)/melatonin composite graft around immediate implants in the esthetic zone compared to ABG alone. MATERIALS AND METHODS: Twenty-six patients with two nonrestorable anterior/premolar teeth were randomly classified into two equal groups. Dental implants were immediately inserted either with ABG (control group) or ABG/melatonin (test group). Outcome measures were peri-implant sulcus depth (PD), gingival index (GI), and wound healing scores...
November 16, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29142653/oral-cancer-around-dental-implants-appearing-in-patients-with-without-a-history-of-oral-or-systemic-malignancy-a-systematic-review
#10
REVIEW
Ginnady Pinchasov, Haim Haimov, Monika Druseikaite, Daniel Pinchasov, Inesa Astramskaite, Rafael Sarikov, Gintaras Juodzbalys
Objectives: The purpose of this article is to systematically review the circumstance of oral cancer around osseointegrated dental implants. Material and Methods: An electronic literature search was conducted through the MEDLINE (PubMed) and EMBASE databases. The search was restricted for articles published during the last 21 years from January 1996 to April 2017 and articles were limited to English language. Results: A total of 35 articles were reviewed, and 19 of the most relevant articles that are suitable to the criteria were selected...
July 2017: Journal of Oral & Maxillofacial Research
https://www.readbyqxmd.com/read/29140381/consistency-of-dental-hygiene-therapy-utilizing-various-dental-hygiene-instrumentation-and-its-effect-on-peri-implant-health-and-survival-of-dental-implants-a-retrospective-study
#11
Sarah B Hoerler, Sandra K Nietz, Victoria L Zook, Christine M Lohse, Thomas J Salinas, Alan B Carr, Daniel A Assad
PURPOSE: The purpose of this retrospective study was to provide practice-based evidence to determine if the consistency of dental hygiene therapy, despite utilizing instrumentation literature that has proven to cause alterations to implant surfaces, affects peri-implant health or survival. MATERIALS AND METHODS: The study sample comprised patients with implant-supported full-arch fixed dental prostheses who were distributed into two groups. The consistent hygiene group patients had dental hygiene therapy at a minimum biannually and were exposed to at least three dental hygiene instrument materials...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140375/plasma-of-argon-increases-cell-attachment-and-bacterial-decontamination-on-different-implant-surfaces
#12
Luigi Canullo, Tullio Genova, Hom-Lay Wang, Stefano Carossa, Federico Mussano
PURPOSE: This in vitro study tested the effects of argon atmospheric pressure dielectric barrier discharge (APDBD) on different implant surfaces with regard to physical changes, bacterial decontamination, and osteoblast adhesion. MATERIALS AND METHODS: Seven hundred twenty disks with three different surface topographies-machined (MAC), titanium plasma-sprayed (TPS), and zirconia-blasted and acid-etched (ZRT)-were tested in this experiment. Bacterial adhesion tests were performed repeatedly on a simplified biofilm of Streptococcus mitis...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140374/implant-abutment-connections-a-review-of-biologic-consequences-and-peri-implantitis-implications
#13
Yuya Sasada, David L Cochran
Clinicians very often have seen marginal bone loss around dental implants at the crest level early on after implant placement and uncovering. Early clinical publications had suggested that this bone loss occurred during the first year of loading. Thus, numerous attempts have been made to minimize or eliminate such bone loss. However, the timing and reason for this bone loss are not always apparent. The objective of this study was to review the evidence regarding marginal bone loss around dental implants from the standpoint of biologic consequences to help understand marginal bone changes around dental implants...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29137395/lithium-chloride-inhibits-titanium-particle-induced-osteoclastogenesis-by-inhibiting-the-nf-%C3%AE%C2%BAb-pathway
#14
Xuanyang Hu, Zhirong Wang, Jiawei Shi, Xiaobin Guo, Liangliang Wang, Zichuan Ping, Yunxia Tao, Huilin Yang, Jun Zhou, Yaozeng Xu, Dechun Geng
Osteoclast over-activation and inflammation responses promote peri-implant osteolysis (PIO), which is the leading cause of aseptic artificial joint loosening. We examined the effect of lithium chloride (LiCl) on wear debris-induced osteoclastogenesis and inflammation. Fifty-Six C57BL/6J male mice were randomly distributed into four groups: sham control (sham, treated with phosphate buffered saline [PBS]), vehicle (treated with titanium/PBS), low-LiCl (L-LiCl, titanium: 50 mg/kg LiCl) and high-LiCl (H-LiCl, titanium: 200 mg/kg LiCl)...
October 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137166/antimicrobial-and-osseointegration-properties-of-nanostructured-titanium-orthopaedic-implants
#15
REVIEW
Marcus Jäger, Herbert P Jennissen, Florian Dittrich, Alfons Fischer, Hedda Luise Köhling
The surface design of titanium implants influences not only the local biological reactions but also affects at least the clinical result in orthopaedic application. During the last decades, strong efforts have been made to improve osteointegration and prevent bacterial adhesion to these surfaces. Following the rule of "smaller, faster, cheaper", nanotechnology has encountered clinical application. It is evident that the hierarchical implant surface micro- and nanotopography orchestrate the biological cascades of early peri-implant endosseous healing or implant loosening...
November 13, 2017: Materials
https://www.readbyqxmd.com/read/29132335/topical-zoledronic-acid-decreases-micromotion-induced-bone-resorption-in-a-sheep-arthroplasty-model
#16
Thomas Jakobsen, Søren Kold, Juan Shiguetomi-Medina, Jorgen Baas, Kjeld Soballe, Ole Rahbek
BACKGROUND: Initial micromotion of a total hip replacement is associated with aseptic loosening. The use of bisphosphonates could be one way to reduce peri-implant bone resorption induced by micromotion. Bisphosphonates compounds are inhibitors of bone resorption. The aim of this study was to investigate whether local treatment with bisphosphonate would reduce bone resorption and fibrous tissue around an experimental implant subjected to micromotion. METHODS: One micromotion implant were inserted into each medial femoral condyle in ten sheep...
November 13, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29130804/is-metal-particle-release-associated-with-peri-implant-bone-destruction-an-emerging-concept
#17
T Fretwurst, K Nelson, D P Tarnow, H-L Wang, W V Giannobile
Peri-implant diseases affecting the surrounding structures of endosseous dental implants include peri-implant mucositis and peri-implantitis. The prevalence of peri-implantitis ranges between 15% and 20% after 10 y, highlighting the major challenge in clinical practice in the rehabilitation of dental implant patients. The widespread nature of peri-implant bone loss poses difficulties in the management of biological complications affecting the long-term success of osseointegrated implant reconstructions. Metal and titanium particles have been detected in peri-implant supporting tissues...
November 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/29130485/sophocarpine-attenuates-wear-particle-induced-implant-loosening-by-inhibiting-osteoclastogenesis-and-bone-resorption-via-suppression-of-the-nf-%C3%AE%C2%BAb-signaling-pathway-in-a-rat-model
#18
Chen-He Zhou, Zhong-Li Shi, Jia-Hong Meng, Bin Hu, Chen-Chen Zhao, Yu-Te Yang, Wei Yu, Ze-Xin Chen, Boon Chin Heng, Virginia-Jeni Akila Parkman, Shuai Jiang, Han-Xiao Zhu, Hao-Bo Wu, Wei-Liang Shen, Shi-Gui Yan
BACKGROUND AND PURPOSE: Aseptic prosthesis loosening, caused by wear particles, is one of the most common causes of arthroplasty failure. Extensive and over-activated osteoclast formation and physiological functioning are regarded as the mechanism of prosthesis loosening. Therapeutic modalities based on inhibiting osteoclast formation and bone resorption have been confirmed to be an effective way of preventing aseptic prosthesis loosening. In this study, we have investigated the effects of sophocarpine (SPC, derived from Sophora flavescens) on preventing implant loosening and further explored the underlying mechanisms...
November 11, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29127889/nitric-oxide-and-arginase-levels-in-peri-implant-tissues-after-delayed-loading
#19
Ceren Gokmenoglu, Nurdan Ozmeric, Caglar Sungur, Raziye Sahin Bildik, Imge Erguder, Serenay Elgun
OBJECTIVE: Nitric oxide (NO) is synthesized from the conversion of L-arginine to L-citrulline by NO synthase (NOS). Arginase can compete with NOS for the common substrate L-arginine, and thus inhibit NO production. NO levels and arginase ezyme might affect the bone remodeling cycle around implants. The aim of this studywas to investigate NO and arginase levels in gingival crevicular fluid (GCF), peri-implant sulcular fluid (PISF), and saliva. MATERIALS AND METHODS: Twenty patients with one or more implants (Straumann(®); Institute Straumann AG, Basel, Switzerland) restored with fixed crown prostheses were included in the study...
October 23, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/29126690/evaluation-of-peri-implant-bone-levels-and-soft-tissue-dimensions-around-zirconia-implants-a-three-year-follow-up-study
#20
K Kniha, K A Schlegel, H Kniha, A Modabber, F Hölzle, K Kniha
The aim of this study was to measure bone levels around zirconia implants during follow-up of up to 3 years. Additionally, the effect of clinical contact point positions on the papilla deficit was evaluated. Eighty-one patients with 105 zirconia implants were examined at the 3-year follow-up. Bone levels were measured on the date of implant placement and at 3 months, 1year, and 3 years thereafter. Distances between the first bone-implant contact and the contact point of the crowns and between the bone level at the adjacent tooth and the contact point of the crowns were assessed...
November 7, 2017: International Journal of Oral and Maxillofacial Surgery
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