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Clinical Oral Implants Research

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https://www.readbyqxmd.com/read/28213949/peri-implant-bone-remodeling-at-the-interface-of-three-different-implant-types-a-histomorphometric-study-in-mini-pigs
#1
Wenjuan Zhou, Sonja Kuderer, Zhonghao Liu, Christian Ulm, Xiaohui Rausch-Fan, Stefan Tangl
OBJECTIVES: The aim of this study was to perform a histomorphometric evaluation of the healing characteristics and jawbone remodeling processes in the peri-implant bone tissue of three commonly used implant surfaces, during the early weeks of osseointegration. MATERIAL AND METHODS: Dental implants with three different surfaces (anodically modified, hydroxyapatite (HA)-coated and machined) were inserted into the mandibular side-tooth region of twelve adult mini-pigs...
February 18, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28191679/a-systematic-review-of-the-survival-and-complication-rates-of-resin-bonded-fixed-dental-prostheses-after-a-mean-observation-period-of-at-least-5%C3%A2-years
#2
REVIEW
Daniel S Thoma, Irena Sailer, Alexis Ioannidis, Marcel Zwahlen, Nikolay Makarov, Bjarni E Pjetursson
OBJECTIVES: The objective of this systematic review was to assess the 5-year and 10-year survival of resin-bonded fixed dental prostheses (RBBs) and to describe the incidence of technical and biological complications. MATERIALS AND METHODS: An electronic MEDLINE search complemented by manual searching was conducted to identify prospective and retrospective cohort studies and case series on RBBs with a mean follow-up time of at least 5 years. Patients had to have been examined clinically at the follow-up visit...
February 13, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28191678/retention-of-implant-supported-overdentures-at-different-implant-angulations-comparing-locator-and-ball-attachments
#3
Nazia Sultana, David W Bartlett, Mahmood Suleiman
OBJECTIVES: To assess the effect of implant angulation on the retention of two different attachment systems for implant-supported overdentures after a simulated fatigue period of 5.5 years. MATERIAL AND METHODS: Two test set-ups were constructed. A two-implant mandibular implant-supported overdenture design was simulated using acrylic resin blocks to support implant replicas (Model 1 and Model 2). The replicas were set up in the canine regions (22-mm inter-implant distance)...
February 13, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28165165/recombinant-bone-morphogenetic-protein-2-and-platelet-derived-growth-factor-bb-for-localized-bone-regeneration-histologic-and-radiographic-outcomes-of-a-rabbit-study
#4
Daniel S Thoma, Hyun-Chang Lim, Vitor M Sapata, Sora R Yoon, Ronald E Jung, Ui-Won Jung
OBJECTIVES: Improvement in localized bone regeneration is needed to avoid the use of autogenous tissue. For that purpose, the use biologic mediators was proposed. The aim was to test whether or not one of two biologic mediators, recombinant human bone morphogenetic protein-2 (rhBMP-2) or recombinant platelet-derived growth factor (rhPDGF-BB), is superior to the other and to control groups for localized bone regeneration. MATERIALS AND METHODS: Four cylinders (height: 5 mm; diameter: 7 mm) were screwed on the parietal and frontal bones at the cranium in 12 rabbits...
February 6, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28165160/peri-implant-bleeding-on-probing-a-cross-sectional-multilevel-analysis-of-associated-factors
#5
Mauro Merli, Francesco Bernardelli, Erica Giulianelli, Ivano Toselli, Giorgia Mariotti, Michele Nieri
OBJECTIVES: The objective was to evaluate the association between peri-implant bleeding on probing (BoP) and probing depth. Other factors regarding patients, implants, and sites were taken into consideration. MATERIAL AND METHODS: Consecutive adult patients with ≥1 dental implant were eligible. Two calibrated operators examined the patients. BoP was the outcome variable. The effects of patient, implant and site factors on BoP were assessed using a 3-level logistic model...
February 6, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28111809/biodegradation-and-tissue-integration-of-various-polyethylene-glycol-matrices-a-comparative-study-in-rabbits
#6
Daniel S Thoma, Franz E Weber, Stefan P Bienz, Yanjun Ge, Christoph H F Hämmerle, Ronald E Jung
OBJECTIVES: To test whether or not chemical and/or physical modifications of polyethylene glycol (PEG) hydrogels influence degradation time, matrix/membrane stability, and integration into surrounding hard and soft tissues. MATERIAL AND METHODS: In 28 rabbits, six treatment modalities were randomly applied to six sites on the rabbit skull: a dense network PEG hydrogel (PEG HD), a medium-dense network PEG hydrogel (PEG MD), a medium-dense network PEG hydrogel modified with an RGD sequence (PEG MD/RGD), a medium-dense network PEG hydrogel modified with RGD with reduced carboxymethyl cellulose (PEG MD/RGD_LV), a loose network PEG hydrogel modified with RGD (PEG LD/RGD), and a collagen membrane (BG)...
January 22, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28097682/evaluation-of-perforated-demineralized-dentin-scaffold-on-bone-regeneration-in-critical-size-sheep-iliac-defects
#7
Md Arafat Kabir, Masaru Murata, Toshiyuki Akazawa, Kaoru Kusano, Katsuhisa Yamada, Manabu Ito
OBJECTIVES: Regenerating critical-size bone injury is a major problem that continues to inspire the design of new graft materials. Therefore, tissue engineering has become a novel approach for targeting bone regeneration applications. Human teeth are a rich source of stem cells, matrix, trace metal ions, and growth factors. A vital tooth-derived demineralized dentin matrix is acid-insoluble and composed of cross-linked collagen with growth factors. In this study, we recycled human non-functional tooth into a unique geometric dentin scaffold, entitled perforated root-demineralized dentin matrix (PR-DDM)...
January 17, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28054383/comparison-between-two-antimicrobial-protocols-with-or-without-guided-bone-regeneration-in-the-treatment-of-peri-implantitis-a-histomorphometric-study-in-dogs
#8
Umberto Demoner Ramos, Flavia Adelino Suaid, Ulf M E Wikesjö, Cristiano Susin, Mario Taba, Arthur Belém Novaes
OBJECTIVES: This study used a dog model to evaluate two antimicrobial protocols with or without guided bone regeneration (GBR) in the surgical reconstruction of peri-implantitis defects. MATERIAL AND METHODS: Eight beagle dogs subject to ligature-induced peri-implantitis were used. The animals either received antimicrobial photodynamic therapy or topical tetracycline hydrochloride combined with GBR or as stand-alone surgical interventions. Block biopsies of the defect sites for histological analysis were obtained at euthanasia, 12 weeks postsurgery...
January 5, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28039903/digital-vs-conventional-full-arch-implant-impressions-a-comparative-study
#9
Sarah Amin, Hans Peter Weber, Matthew Finkelman, Khaled El Rafie, Yukio Kudara, Panos Papaspyridakos
PURPOSE: To test whether or not digital full-arch implant impressions with two different intra-oral scanners (CEREC Omnicam and True Definition) have the same accuracy as conventional ones. The hypothesis was that the splinted open-tray impressions would be more accurate than digital full-arch impressions. MATERIAL AND METHODS: A stone master cast representing an edentulous mandible using five internal connection implant analogs (Straumann Bone Level RC, Basel, Switzerland) was fabricated...
December 31, 2016: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28019056/the-influence-of-collagen-membrane-and-autogenous-bone-chips-on-bone-augmentation-in-the-anterior-maxilla-a-preclinical-study
#10
Simone F M Janner, Dieter D Bosshardt, David L Cochran, Vivianne Chappuis, Guy Huynh-Ba, Archie A Jones, Daniel Buser
OBJECTIVES: To evaluate the effect of a resorbable collagen membrane and autogenous bone chips combined with deproteinized bovine bone mineral (DBBM) on the healing of buccal dehiscence-type defects. MATERIAL AND METHODS: The second incisors and the first premolars were extracted in the maxilla of eight mongrels. Reduced diameter, bone-level implants were placed 5 weeks later. Standardized buccal dehiscence-type defects were created and grafted at implant surgery...
December 25, 2016: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28009061/intra-surgical-vs-radiographic-bone-level-assessments-in-measuring-peri-implant-bone-loss
#11
Giovanni Serino, Hirohisa Sato, Patrick Holmes, Alberto Turri
OBJECTIVE: To evaluate the accuracy between the intra-surgical and the peri-apical radiographic measurements of bone loss at implant with peri-implantitis. MATERIALS AND METHODS: A total of 46 Brånemark implants in 24 patients with diagnosis of peri-implantitis were included in the study. The amount of peri-implant bone loss occurred at those implants was measured during peri-implant surgery and compared to the radiographic bone loss measured by three independent examiners...
December 23, 2016: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/27995653/influence-of-misfit-on-the-occurrence-of-veneering-porcelain-fractures-chipping-in-implant-supported-metal-ceramic-fixed-dental-prostheses-an-in%C3%A2-vitro-pilot-trial
#12
Nils Löfgren, Christel Larsson, Nikos Mattheos, Martin Janda
OBJECTIVE: Technical complications such as veneer fractures are more common in implant-supported than tooth-supported restorations. The underlying causes have not been fully identified. The aim of this study was to evaluate whether misfit between the restoration and the implant may affect the risk of veneer fractures. MATERIALS AND METHODS: Twenty standardized five-unit implant-supported metal-ceramic fixed dental prostheses (FDP)s were manufactured and fixed in acrylic blocks...
December 19, 2016: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/27990692/a-multicenter-randomized-controlled-clinical-trial-using-a-new-resorbable-non-cross-linked-collagen-membrane-for-guided-bone-regeneration-at-dehisced-single-implant-sites-interim-results-of-a-bone-augmentation-procedure
#13
Bastian Wessing, Istvan Urban, Eduardo Montero, Werner Zechner, Markus Hof, Javier Alández Chamorro, Nuria Alández Martin, Giovanni Polizzi, Silvio Meloni, Mariano Sanz
OBJECTIVE: To compare clinical performance of a new resorbable non-cross-linked collagen membrane, creos xenoprotect (CXP), with a reference membrane (BG) for guided bone regeneration at dehisced implant sites. MATERIALS AND METHODS: This randomized controlled clinical trial enrolled patients with expected dehiscence defects following implant placement to restore single teeth in the maxillary and mandibular esthetic zone and premolar area. Implants were placed using a two-stage surgical protocol with delayed loading...
December 18, 2016: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28165197/in-memoriam
#14
Andreas Stavropoulos, Niklaus P Lang, Anton Sculean, Jan Lindhe, Nikolaos Donos, Nikolaos Mardas
No abstract text is available yet for this article.
February 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/25916272/regeneration-of-rabbit-calvarial-defects-using-biphasic-calcium-phosphate-and-a-strontium-hydroxyapatite-containing-collagen-membrane
#15
Shuzo Kitayama, Lok O Wong, Li Ma, Jia Hao, Shohei Kasugai, Niklaus P Lang, Nikos Mattheos
OBJECTIVES: Biphasic calcium phosphate (BCP) composed of 10% hydroxyapatite (HA) and 90% beta-tricalcium phosphate has been developed. Recently, a strontium hydroxyapatite-containing collagen membrane (Sr) was shown to stimulate early bone formation in rat calvarial defects at 4 weeks postoperatively, as compared with a cross-linked collagen membrane, for guided bone regeneration (GBR). The objective of this study was to evaluate these novel biomaterials for GBR in relation to a non-cross-linked collagen membrane (BG) and deproteinized bovine bone mineral (BO)...
December 2016: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/25907030/a-fully-digital-approach-to-replicate-peri-implant-soft-tissue-contours-and-emergence-profile-in-the-esthetic-zone
#16
Carlo Monaco, Edoardo Evangelisti, Roberto Scotti, Giuseppe Mignani, Giovanni Zucchelli
OBJECTIVE: This short communication reports on a novel digital technique designated - the "Fully Digital Technique (FDT)" - to take the impression of the peri-implant soft tissue and emergence profile with an intraoral scanner, digitally capturing both the three dimensional position of the implant platform and the coronal and gingival parts of the provisional retained restoration. MATERIALS AND METHODS: A first intraoral digital impression, which generated a standard triangulation language file (STL1), was taken using a standardized implant scanbody to detect the position of the implant...
December 2016: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/25899917/a-high-concentration-of-recombinant-human-bone-morphogenetic-protein-2-induces-low-efficacy-bone-regeneration-in-sinus-augmentation-a-histomorphometric-analysis-in-rabbits
#17
Ji-Youn Hong, Min-Soo Kim, Hyun-Chang Lim, Jung-Seok Lee, Seong-Ho Choi, Ui-Won Jung
OBJECTIVES: The aim of the study was to elucidate the efficacy of bone regeneration at the early stage of healing in rabbit sinuses grafted with a biphasic calcium phosphate (BCP) carrier soaked in a high concentration of recombinant human bone morphogenetic protein-2 (rhBMP-2). MATERIALS AND METHODS: Both maxillary sinuses of eight male rabbits were used. The sinus on one side (assigned randomly) was grafted with BCP loaded with rhBMP-2 (1.5 mg/ml; test group) using a soaking method, while the other was grafted with saline-soaked BCP (control group)...
December 2016: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/25893901/prosthetic-hygiene-and-functional-efficacy-in-completely-edentulous-patients-satisfaction-and-quality-of-life%C3%A2-during-a-5-year-follow-up
#18
María Martín-Ares, Cristina Barona-Dorado, Blanca Guisado-Moya, Natalia Martínez-Rodríguez, Jorge Cortés-Bretón-Brinkmann, José Mª Martínez-González
OBJECTIVES: The aim of this study was to compare satisfaction with function and hygiene maintenance in completely edentulous elderly patients rehabilitated with implant-supported fixed prostheses, overdentures, and conventional prostheses. MATERIALS AND METHODS: A total of 150 geriatric patients were divided into three groups: Group 1 (CD) patients rehabilitated with complete dentures; Group 2 (FP) patients with implant-supported fixed prostheses; Group 3 (OD) patients with overdentures...
December 2016: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/25864924/the-genes-scgb1a1-lpo-and-gbp2-characteristically-expressed-in-peri-implant-epithelium-of-rats
#19
Gentaro Mori, Hodaka Sasaki, Yasushi Makabe, Masao Yoshinari, Yasutomo Yajima
OBJECTIVES: The peri-implant epithelium (PIE) plays an important role in the prevention against initial stage of inflammation. To minimize the risk of peri-implantitis, it is necessary to understand the biological characteristics of the PIE. The aim of this study was to investigate the characteristic gene expression profile of PIE as compared to junctional epithelium (JE) using laser microdissection and microarray analysis. METHODS: Left upper first molars of 4-week-old rat were extracted, and titanium alloy implants were placed...
December 2016: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/25864771/patient-centered-outcomes-comparing-digital-and-conventional-implant-impression-procedures-a-randomized-crossover-trial
#20
Tim Joda, Urs Brägger
OBJECTIVES: The aim of this randomized controlled trial was to compare patient-centered outcomes during digital and conventional implant impressions. MATERIAL AND METHODS: In a crossover study design, intraoral scanning (IOS) [test] as well as classical polyether impressions [control] were both performed on 20 patients for single-tooth replacement with implant-supported crowns. The sequential distribution of either starting with the test or the control procedure was randomly selected...
December 2016: Clinical Oral Implants Research
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