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Peri-implant bone

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https://www.readbyqxmd.com/read/27925634/influence-of-implant-surface-texture-design-on-peri-acetabular-bone-ingrowth-a-mechanobiology-based-finite-element-analysis
#1
Kaushik Mukherjee, Sanjay Gupta
The fixation of uncemented acetabular components largely depends on the amount of bone ingrowth, which is influenced by the design of the implant surface texture. The objective of this numerical study is to evaluate the effect of these implant texture design factors on bone ingrowth around an acetabular component. The novelty of this study lies in comparative Finite Element analysis of 3D microscale models of the implant-bone interface, considering patient-specific mechanical environment, host bone material property and implant-bone relative displacement, in combination with sequential mechanoregulatory algorithm and design of experiment based statistical framework...
December 7, 2016: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/27918885/mutant-ccl2-protein-coating-mitigates-wear-particle-induced-bone-loss-in-a-murine-continuous-polyethylene-infusion-model
#2
Akira Nabeshima, Jukka Pajarinen, Tzu-Hua Lin, Xinyi Jiang, Emmanuel Gibon, Luis A Córdova, Florence Loi, Laura Lu, Eemeli Jämsen, Kensuke Egashira, Fan Yang, Zhenyu Yao, Stuart B Goodman
Wear particle-induced osteolysis limits the long-term survivorship of total joint replacement (TJR). Monocyte/macrophages are the key cells of this adverse reaction. Monocyte Chemoattractant Protein-1 (MCP-1/CCL2) is the most important chemokine regulating trafficking of monocyte/macrophages in particle-induced inflammation. 7ND recombinant protein is a mutant of CCL2 that inhibits CCL2 signaling. We have recently developed a layer-by-layer (LBL) coating platform on implant surfaces that can release biologically active 7ND...
November 24, 2016: Biomaterials
https://www.readbyqxmd.com/read/27915981/molecular-cellular-and-pharmaceutical-aspects-of-autologous-grafts-for-peri-implant-hard-and-soft-tissue-defects
#3
Jiayu Lu, Yongming Hao, Wei Zhao, Chengqi Lv, Derong Zou
The lack of supporting hard and soft tissues always prevents the rehabilitation with dental implants. Among various hard and soft tissue augmentation procedures, autologous grafts have been considered to be the gold standard. Autologous mesenchymal stem cells (MSCs) from bone marrow, dental tissue and adipose tissue have been described as promising alternatives for bone regeneration in the field of dental implantation. Mucosal cells, gingival fibroblasts and dental progenitor cells (DPS) can enhance peri-implant soft tissue augmentation and regenerate periodontal tissues around dental implants...
December 1, 2016: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/27915135/primary-stability-and-viscoelastic-displacement-of-mini-implant-system-under-loading
#4
Jim Lee, Yong-Hoon Jeong, Joseph Pittman, Toru Deguchi, William M Johnston, Henry W Fields, Do-Gyoon Kim
BACKGROUND: The objectives of the current study were to examine the effects of mini-implant diameters on 1) primary stability before bone properties are changed by active peri-implant bone remodeling and 2) the time-dependent displacement of mini-implant systems in bone under a functional radial loading and their associations with bone mineral density. METHODS: Twenty one, 8mm length mini-implants (7 each for 1.4mm, 1.6mm, and 2mm diameters) were placed in mandibular sections of human cadavers (4 males and 3 females, average 69...
November 24, 2016: Clinical Biomechanics
https://www.readbyqxmd.com/read/27888491/twist-removal-of-healed-vs-nonhealed-implants-a-mechanical-and-histological-study-in-mini-pigs
#5
Ricardo de Oliveira Silva, Fabrício Passador, Paulo Henrique Ferreira Caria
PURPOSE: The objective of this study was to evaluate the effect of removal torque (reverse torque) of titanium implants in peri-implant bone. METHODS: The P1-M1 teeth were extracted bilaterally of 6 mini pigs (BR-1). Each animal received 6 titanium implants, three for each side of mandible. On the right side of mandible, 3 implants reminded 9 months (9M) under masticatory activity and on the left side, other 3 implants were placed and immediately removed (IR). All 36 implants were removed by removal torque, and the recorded values were statistically analyzed...
December 2016: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/27883203/impact-of-platform-switching-on-interproximal-bone-levels-around-8-5-mm-implants-in-the-posterior-region-5-year-results-from-a-randomized-clinical-trial
#6
Gerdien Telleman, Gerry M Raghoebar, Arjan Vissink, Henny J A Meijer
AIM: To assess the medium-term results of 8.5 mm implants supplied with a conventional platform-matched implant-abutment connection or a platform-switched design. MATERIALS & METHODS: Eighty patients with 1 or more missing teeth in the maxillary or mandibular posterior zone were randomly assigned for treatment with implants with a conventional (control group) or platform-switched (test group) implant-abutment connection. Follow-up visits were conducted 1 month, 1 year and 5 years after functional loading...
November 24, 2016: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/27882310/minimal-invasive-horizontal-ridge-augmentation-using-subperiosteal-tunneling-technique
#7
Hyun-Suk Kim, Young-Kyun Kim, Pil-Young Yun
BACKGROUND: The goal of this study was to retrospectively evaluate the prognosis of minimal invasive horizontal ridge augmentation (MIHRA) technique using small incision and subperiosteal tunneling technique. METHODS: This study targeted 25 partially edentulous patients (10 males and 15 females, mean age 48.8 ± 19.7 years) who needed bone graft for installation of the implants due to alveolar bone deficiency. The patients took the radiographic exam, panoramic and periapical view at first visit, and had implant fixture installation surgery...
December 2016: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27861672/a-two-year-evaluation-of-a-sloped-marginal-contour-implant-system-placed-in-healed-sites
#8
Philip Km Lee, Adam Sc Siu
PURPOSE: The purpose of this clinical trial was to evaluate the survival rate, bone remodeling, and soft tissue health around sloped marginal contour implants when placed in healed sites posteriorly in the mouth. MATERIALS AND METHODS: Implants were placed in healed sites at premolar and molar regions. After a 3-month osseointegration period, definitive prostheses were connected. Clinical and radiographic examinations were performed at implant placement and then 1, 3, 6, 12, and 24 months after implant placement...
November 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27861661/retrospective-cohort-study-of-4-591-straumann-implants-placed-in-2-060-patients-in-private-practice-with-up-to-10-year-follow-up-the-relationship-between-crestal-bone-level-and-soft-tissue-condition
#9
David French, David L Cochran, Ronen Ofec
PURPOSE: The purpose of this report is to describe the crestal bone level (CBL) around implants of various designs, describe the peri-implant soft tissue condition, and evaluate the relationship between the two over time. MATERIALS AND METHODS: This retrospective cohort study reports on 2,060 patients with 4,591 implants evaluated after 3 months; 1, 3, 5, and 7 years; and up to 10 years. Periapical radiographs were used to evaluate changes in CBL. The peri-implant soft tissue was evaluated using a modified Bleeding Index termed the Implant Mucosal Index (IMI) where: 0 = no bleeding; 1 = minimal, single-point bleeding; 2 = moderate, multipoint bleeding; 3 = profuse, multipoint bleeding; and 4 = suppuration...
November 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27861658/a-comparison-of-tapered-and-nontapered-implants-in-the-minipig
#10
David Cochran, Andreas Stavropoulos, Marcel Obrecht, Benjamin Pippenger, Michel Dard
PURPOSE: Tapered implants are thought to result in equivalent long-term stability and marginal peri-implant bone height in comparison to cylindrical implants. The goal of this study was to compare the primary stability and osseointegration of a novel bone-level tapered-wall implant to a control bone-level cylindrical implant with exactly the same surface characteristics, in a direct side-by-side comparison in an animal model. MATERIALS AND METHODS: Mandibular premolars and first molars were extracted in 11 G...
November 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27861657/soft-and-hard-tissue-changes-following-immediate-placement-or-immediate-restoration-of-single-tooth-implants-in-the-esthetic-zone-a-systematic-review-and-meta-analysis
#11
Qi Yan, Li-Qun Xiao, Mei-Ying Su, Yan Mei, Bin Shi
PURPOSE: This systematic review aimed to compare immediate protocols with conventional protocols of single-tooth implants in terms of changes in the surrounding hard and soft tissue in the esthetic area. MATERIALS AND METHODS: Electronic and manual searches were performed in PubMed, EMBASE, Cochrane, and other data systems for research articles published between January 2001 and December 2014. Only randomized controlled trials (RCTs) reporting on hard and or soft tissue characteristics following a single-tooth implant were included...
November 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27860171/long-term-effect-of-surface-roughness-and-patients-factors-on-crestal-bone-loss-at-dental-implants-a-systematic-review-and-meta-analysis
#12
REVIEW
Ron Doornewaard, Véronique Christiaens, Hugo De Bruyn, Magnus Jacobsson, Jan Cosyn, Stijn Vervaeke, Wolfgang Jacquet
Publications from 2011 to 2015 were selected to evaluate effect of implant surface roughness on long-term bone loss as surrogate for peri-implantitis risk. 87 out of 2,566 papers reported the mean bone loss after at least 5 years of function. Estimation of the proportion of implants with bone loss above 1, 2, and 3 mm as well as analysis the effect of implant surface roughness, smoking, and history of periodontitis was performed. By means of the provided statistical information of bone loss (mean and standard deviation) the prevalence of implants with bone loss ranging from 1 to 3 mm was estimated...
November 15, 2016: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/27858554/narrow-diameter-3-0-mm-versus-standard-diameter-4-0-and-4-5-mm-implants-for-the-splinted-partial-fixed-restoration-of-posterior-jaws-a-5-year-retrospective-cohort-study
#13
Francesco Pieri, Caterina Forlivesi, Ernesto Caselli, Giuseppe Corinaldesi
BACKGROUND: Evidence concerning the predictability of narrow-diameter implants (NDIs) (< 3.3 mm) to restore partially edentulous posterior areas is limited. The aim of this study was to compare the 5-year outcomes of NDIs (3.0 mm) and standard-diameter implants (SDIs) (4.0-4.5 mm) supporting fixed partial dentures (FPDs) in posterior jaws. METHODS: All patients treated with at least two adjacent NDIs or SDIs according to the available bone thickness and with a minimum follow-up of 5 years after placement were invited to undergo a clinical and radiologic examination...
November 18, 2016: Journal of Periodontology
https://www.readbyqxmd.com/read/27835706/association-between-peri-implant-bone-morphology-and-marginal-bone-loss-a-retrospective-study-on-implant-supported-mandibular-overdentures
#14
Qian Ding, Lei Zhang, Wil Geraets, Wuqing Wu, Yongsheng Zhou, Daniel Wismeijer, Qiufei Xie
PURPOSE: The present study aimed to explore the association between marginal bone loss and type of peri-implant bony defect determined using a new peri-implant bony defect classification system. MATERIALS AND METHODS: A total of 110 patients with implant-supported mandibular overdentures were involved. Clinical information was collected, including gender, age, smoking habit, and the overdenture attachment system used. Peri-implant bony defect types and marginal distances (ie, distance between the marginal bone level and the top of the implant shoulder) of all sites were identified on panoramic radiographs by a single experienced observer...
November 11, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27834171/bacterial-communities-associated-with-apical-periodontitis-and-dental-implant-failure
#15
Simon Dingsdag, Stephen Nelson, Nicholas V Coleman
BACKGROUND: Previously, we demonstrated that bacteria reside in apparently healed alveolar bone, using culture and Sanger sequencing techniques. Bacteria in apparently healed alveolar bone may have a role in peri-implantitis and dental implant failure. OBJECTIVE: To compare bacterial communities associated with apical periodontitis, those colonising a failed implant and alveolar bone with reference biofilm samples from healthy teeth. METHODS AND RESULTS: The study consisted of 196 samples collected from 40 patients undergoing routine dental implant insertion or rehabilitation...
2016: Microbial Ecology in Health and Disease
https://www.readbyqxmd.com/read/27833766/peri-implant-bone-loss-and-peri-implantitis-a-report-of-three-cases-and-review-of-the-literature
#16
Vanchit John, Daniel Shin, Allison Marlow, Yusuke Hamada
Dental implant supported restorations have been added substantially to the clinical treatment options presented to patients. However, complications with these treatment options also arise due to improper patient selection and inadequate treatment planning combined with poor follow-up care. The complications related to the presence of inflammation include perimucositis, peri-implant bone loss, and peri-implantitis. Prevalence rates of these complications have been reported to be as high as 56%. Treatment options that have been reported include nonsurgical therapy, the use of locally delivered and systemically delivered antibiotics, and surgical protocols aimed at regenerating the lost bone and soft tissue around the implants...
2016: Case Reports in Dentistry
https://www.readbyqxmd.com/read/27833740/surgical-regenerative-treatments-for-peri-implantitis-meta-analysis-of-recent-findings-in-a-systematic-literature-review
#17
REVIEW
Povilas Daugela, Marco Cicciù, Nikola Saulacic
OBJECTIVES: The purpose of the present study was to systematically review the literature on the surgical regenerative treatment of the peri-implantitis and to determine an effective therapeutic predictable option for their clinical management. MATERIAL AND METHODS: The study searched MEDLINE and EMBASE databases from 2006 to 2016. Clinical human studies that had reported changes in probing depth (PD) and/or bleeding on probing (BOP) and/or radiologic marginal bone level (RBL) changes after peri-implantitis surgical treatment at 12-month follow-up or longer were included accordingly to PRISMA guidelines...
July 2016: Journal of Oral & Maxillofacial Research
https://www.readbyqxmd.com/read/27833739/surgical-non-regenerative-treatments-for-peri-implantitis-a-systematic-review
#18
REVIEW
Ausra Ramanauskaite, Povilas Daugela, Ricardo Faria de Almeida, Nikola Saulacic
OBJECTIVES: The purposes of the present study were 1) to systematically review the literature on the surgical non-regenerative treatments of peri-implantitis and 2) to determine a predictable therapeutic option for the clinical management of peri-implantitis lesions. MATERIAL AND METHODS: The study search was performed on primary database MEDLINE and EMBASE from 2005 until 2016. Sequential screenings at the title, abstract, and full-text levels were performed. Clinical human studies in the English language that had reported changes in probing depth (PD) and/or bleeding on probing (BOP) and/or radiologic marginal bone level changes after peri-implantitis surgical non-regenerative treatment at 6-month follow-up or longer were included accordingly PRISMA guidelines...
July 2016: Journal of Oral & Maxillofacial Research
https://www.readbyqxmd.com/read/27833737/the-efficacy-of-supportive-peri-implant-therapies-in-preventing-peri-implantitis-and-implant-loss-a-systematic-review-of-the-literature
#19
REVIEW
Ausra Ramanauskaite, Tellervo Tervonen
OBJECTIVES: To study the efficacy of supportive peri-implant therapies in preventing clinical and radiological signs of peri-implantitis and implant loss. MATERIAL AND METHODS: Longitudinal human studies, published between January 1, 2006, and February 1, 2016, were included based on an electronic search using MEDLINE and EMBASE databases and complemented by a manual search. Articles were included only if 1) they comprised a group of patients involved in/adhering to regular supportive peri-implant therapies (SPTs) and a control group without such therapies or with poor adherence to them, 2) the protocol of the SPTs was clearly described and 3) the outcome was indicated by means of clinical/radiological changes or implant loss...
July 2016: Journal of Oral & Maxillofacial Research
https://www.readbyqxmd.com/read/27833733/diagnostic-principles-of-peri-implantitis-a-systematic-review-and-guidelines-for-peri-implantitis-diagnosis-proposal
#20
REVIEW
Ausra Ramanauskaite, Gintaras Juodzbalys
OBJECTIVES: To review and summarize the literature concerning peri-implantitis diagnostic parameters and to propose guidelines for peri-implantitis diagnosis. MATERIAL AND METHODS: An electronic literature search was conducted of the MEDLINE (Ovid) and EMBASE databases for articles published between 2011 and 2016. Sequential screening at the title/abstract and full-text levels was performed. Systematic reviews/guidelines of consensus conferences proposing classification or suggesting diagnostic parameters for peri-implantitis in the English language were included...
July 2016: Journal of Oral & Maxillofacial Research
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