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Clinical Implant Dentistry and related Research

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https://www.readbyqxmd.com/read/29446238/bacterial-microleakage-at-the-abutment-implant-interface-in-vitro-study
#1
Carlos Larrucea, Aparicio Conrado, Denise Olivares, Carlos Padilla, Andrea Barrera, Olga Lobos
INTRODUCTION: In implant rehabilitation, a microspace is created at the abutment-implant interface (AII). Previous research has shown that oral microbiome can proliferate in this microspace and affect periimplant tissues, causing inflammation in peri-implant tissues. Preventing microbial leakages through the AII is therefore an important goal in implantology. OBJECTIVE: To determine the presence of marginal bacterial microleakage at the AII according to the torque applied to the prosthetic implant in vitro...
February 15, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29446213/osteopontin-is-essential-for-il-1%C3%AE-production-and-apoptosis-in-peri-implantitis
#2
Chengye Che, Jie Liu, Jianjun Yang, Lei Ma, Na Bai, Qian Zhang
BACKGROUND AND PURPOSE: Peri-implantitis is caused by a cascade of host and microbial factors leading to an oral inflammatory disease. The inflammation proliferates into supporting tissues surrounding implants and may finally lead to a complete loss of osseointegration. Being a phosphorylated glycoprotein secreted by immunocompetent cells, osteopontin (OPN) is involved in the differentiation of odontoblast-like cells during pulpal healing following tooth transplantation and the secretion of type I collagen in reparative dentin...
February 15, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29446204/an-up-to-17-year-follow-up-retrospective-analysis-of-a-minimally-invasive-flapless-approach-18-945-implants-in-7783-patients
#3
Philip Jesch, Wolfgang Jesch, Emanuel Bruckmoser, Mischa Krebs, Tibor Kladek, Rudolf Seemann
BACKGROUND: This study investigates gender, age, jaw, implant position, loading protocol (immediate vs delayed), smoking, and type of surgery (punch vs flap) as influential factors of implant survival in a large patient collective. PURPOSE: To evaluate the survival rates of implants in patients using a mucoperiosteal punch for flapless implantation in the majority of cases in order to evaluate its medical efficacy and safety. MATERIALS AND METHODS: Between 1994 and 2015 all patients with complete data treated at the Wienerberg Dental Clinic, Vienna, Austria, were included and statistically analyzed in Cox proportional hazard (PH) models...
February 15, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29417708/the-effect-of-the-heights-and-thicknesses-of-the-remaining-root-segments-on-buccal-bone-resorption-in-the-socket-shield-technique-an-experimental-study-in-dogs
#4
Zhen Tan, Jian Kang, Wenjia Liu, Hang Wang
BACKGROUND: To date only a few studies have been done on the use of the socket-shield technique for preserving the resorption of the buccal bone in aesthetically sensitive sites. Besides, there have been no further studies on the effect of the heights and thicknesses of the remaining root segments on buccal bone resorption when using this method. PURPOSE: The aim of this study was to evaluate the effect of different heights and thicknesses of the remaining root segments on bone resorption in the socket-shield technique...
February 8, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29399999/effect-of-length-and-location-of-edentulous-area-on-the-accuracy-of-prosthetic-treatment-plan-incorporation-into-cone-beam-computed-tomography-scans
#5
Faris Z Jamjoom, Do-Gyoon Kim, Damian J Lee, Edwin A McGlumphy, Burak Yilmaz
BACKGROUND: Effects of length and location of the edentulous area on the accuracy of prosthetic treatment plan incorporation into cone-beam computed tomography (CBCT) scans has not been investigated. PURPOSE: To evaluate the effect of length and location of the edentulous area on the accuracy of prosthetic treatment plan incorporation into CBCT scans using different methods. MATERIAL AND METHODS: Direct digital scans of a completely dentate master model with removable radiopaque teeth were made using an intraoral scanner, and digital scans of stone duplicates of the master model were made using a laboratory scanner...
February 5, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29380510/bone-and-soft-tissue-outcomes-risk-factors-and-complications-of-implant-supported-prostheses-5-years-rct-with-different-abutment-types-and-loading-protocols
#6
Catharina Göthberg, Kerstin Gröndahl, Omar Omar, Peter Thomsen, Christer Slotte
BACKGROUND: Data on risk factors and complications after long-term implant treatment is limited. The aims were to evaluate the role of various fixation modes and to analyze complications and risks that affect long-term use of implant-supported partial fixed dental prostheses. MATERIALS AND METHODS: Fifty partially edentulous subjects received three Brånemark TiUnite™ implants. Superstructures were attached directly at implant level (IL) or via abutments: machined surface (AM) and an oxidized surface (AOX, TiUnite™)...
January 30, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29380504/quasi-static-strength-and-fractography-analysis-of-two-dental-implants-manufactured-by-direct-metal-laser-sintering
#7
Sergio Alexandre Gehrke, Leticia Pérez-Díaz, Berenice Anina Dedavid
BACKGROUND: New manufacturing methods was developed to improve the tissues integration with the titanium alloy pieces. OBJECTIVE: The present in vitro study was to assess the resistance and fracture mode after applied a quasi-static compressive force on the two dental implants manufactured by direct metal laser sintering. MATERIALS AND METHODS: Twenty dental implants manufactured by direct metal laser sintering, using titanium alloy (Ti-6Al-4V) granules in two designs (n = 10 per group): Conventional dental implant (group Imp1) two-piece implant design, where the surgical implant and prosthetic abutment are two separate components and, the one-piece implant (group Imp2), where the surgical implant and prosthetic abutment are one integral piece...
January 30, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29380490/evaluation-of-primary-stability-in-modified-implants-analysis-by-resonance-frequency-and-insertion-torque
#8
Plínio Sciasci, Nicole Casalle, Luís Geraldo Vaz
BACKGROUND: Changes in the macrogeometry of dental implants are known to influence primary stability and the osseointegration process. PURPOSE: The purpose of the present in vitro study was to evaluate the mechanical behavior of geometric changes in the apex region of dental implants. METHODS: Thirty-five cylindrical dental implants (Titamax Ti; Neodent) were machined at the apical third to reproduce the experimental groups: without apical cut (Wc), apical bi-split cut, apical tri-split cut, apical quadri-split cut (Qs)...
January 30, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29377475/preservation-and-augmentation-of-molar-extraction-sites-affected-by-severe-bone-defect-due-to-advanced-periodontitis-a-prospective-clinical-trial
#9
Liping Zhao, Tao Xu, Wenjie Hu, Kwok-Hung Chung
BACKGROUND: Studies of the extracted infected-molar ridge preservation are limited. PURPOSE: To compare alterations of hard and soft tissue in infected-molar sockets receiving ridge preservation compared with natural healing. MATERIALS AND METHODS: Thirty-five infected-molar extraction sites either preserving with Bio-Gide membrane covered the Bio-Oss material or receiving natural healing procedure as controls. The soft tissue profile was evaluated before tooth extraction and after 6-month healing...
January 29, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29359880/longitudinal-analysis-on-the-effect-of-insertion-torque-on-delayed-single-implants-a-3-year-randomized-clinical-study
#10
Simone Marconcini, Enrica Giammarinaro, Paolo Toti, Fortunato Alfonsi, Ugo Covani, Antonio Barone
BACKGROUND: Implant stability is commonly related to insertion torque. Recently, it has been suggested that higher insertion torque may lead to greater bone resorption. PURPOSE: The aim of the present randomized clinical study was to evaluate the role of different insertion torque values in terms of implant success, marginal bone loss, and facial soft tissues recession. MATERIALS AND METHODS: Patients requiring a single dental implant were recruited and randomized to receive one of two implants with the same macro-geometry but different cutting designs...
January 23, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29350883/peri-implant-conditions-and-levels-of-advanced-glycation-end-products-among-patients-with-different-glycemic-control
#11
Zeyad H Al-Sowygh, Siti Mariam Ab Ghani, Konstantinos Sergis, Fahim Vohra, Zohaib Akram
BACKGROUND: A close relationship between poor glycemic control and peri-implant break down has been demonstrated. It is hypothesized that levels of advanced glycation end products (AGEs) in peri-implant sulcular fluid (PISF) are higher with increased glycemic levels in type 2 diabetes mellitus patients. PURPOSE: In the present study, we examined the clinical and radiographic peri-implant parameters and levels of AGEs among different glycemic levels in diabetic patients and assessed whether the levels of AGEs correlate with clinical peri-implant parameters...
January 19, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29350855/measurement-properties-of-gingival-biotype-evaluation-methods
#12
Patrick Henry Machado Alves, Thereza Cristina Lira Pacheco Alves, Thiago Amadei Pegoraro, Yuri Martins Costa, Estevam Augusto Bonfante, Ana Lúcia Pompéia Fraga de Almeida
BACKGROUND: There are numerous methods to measure the dimensions of the gingival tissue, but few have compared the effectiveness of one method over another. OBJECTIVE: This study aimed to describe a new method and to estimate the validity of gingival biotype assessment with the aid of computed tomography scanning (CTS). MATERIALS AND METHODS: In each patient different methods of evaluation of the gingival thickness were used: transparency of periodontal probe, transgingival, photography, and a new method of CTS)...
January 19, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29318773/radiographic-analysis-of-dental-implant-extensions-using-bone-grafts-on-dogs
#13
Álida Lúcia Cardoso, Cirilo Antônio de Paula Lima, Agenor Montebello Filho, Adriano Alves Pereira
BACKGROUND: Despite the wide use of dental implants they can bring inconveniences, as the moment one reaches osseointegration, these can no longer be extended. Therefore, if a problem occurs regarding its positioning, the options open are substitution or burial of the implant. With implant substitution, there exists the risk of local bone loss and/or future loss of the new implant. PURPOSE: This study proposes a new device (implant extender) for extending the dental implant...
January 10, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29316182/lateral-bone-augmentation-in-narrow-posterior-mandibles-description-of-a-novel-approach-and-analysis-of-results
#14
Ilan Beitlitum, Alon Sebaoun, Carlos E Nemcovsky, Shimshon Slutzkey
BACKGROUND: Combination of particulate grafts and collagen membranes is widely used for augmentation of bony defects for implant placement. Fixation of the barrier membrane may avoid complications due to unfavorable mechanical properties and poor stability leading to collapse of the augmented area. PURPOSE: To evaluate a new simplified method for resorbable collagen membrane fixation in lateral bone augmentation procedures in narrow posterior mandibles. MATERIALS AND METHODS: This retrospective study analyzed 16 procedures performed in 15 patients who followed lateral ridge augmentation procedures before implant placement in the posterior mandible...
January 8, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29314652/evaluation-of-bone-stimulation-by-different-designs-of-microthreaded-implants-in-enhancing-osseointegration-an-in-vivo-animal-study-supported-by-a-numerical-analysis
#15
Sindhu Sudhakar Kumararama, Sunil Mishra, Ramesh Chowdhary
BACKGROUND: An optimal shape of the thread design of the implants is required for equal distribution of stresses to the surrounding bone matrix and for stimulation and promotion of bone remodeling. PURPOSE: The study was construed with the aim of histomorphometric evaluation of bone stimulation generated by different microthread designed implants in enhancing osseointegration, and to assess the pattern of stress dissipation through a two-dimensional finite element analysis...
January 4, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29283207/hard-tissue-volume-stability-of-guided-bone-regeneration-during-the-healing-stage-in-the-anterior-maxilla-a-clinical-and-radiographic-study
#16
Xi Jiang, Yu Zhang, Ping Di, Ye Lin
BACKGROUND: Guided bone regeneration (GBR) is currently the most widely used technique to reconstruct localized peri-implant bone defects. OBJECTIVES: To evaluate hard tissue volume stability during the healing stage of GBR with particulate bone graft and resorbable collagen membrane. MATERIALS AND METHODS: Twenty-eight patients who were missing a single maxillary incisor and required implant placement combined with GBR were randomly assigned to 2 groups: submerged (n = 14) and transmucosal (n = 14) healing groups...
December 28, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29283206/osseointegration-and-foreign-body-reaction-titanium-implants-activate-the-immune-system-and-suppress-bone-resorption-during-the-first-4-weeks-after-implantation
#17
Ricardo Trindade, Tomas Albrektsson, Silvia Galli, Zdenka Prgomet, Pentti Tengvall, Ann Wennerberg
BACKGROUND: Osseointegration mechanisms are still not entirely understood. PURPOSE: The present pilot study aims at demonstrating the involvement of the immune system in the process of osseointegration around titanium implants, comparing bone healing in the presence and absence of a titanium implant. MATERIALS AND METHODS: Fifteen New Zealand White rabbits had one osteotomy performed at each of the distal femurs; on one side, no implant was placed (sham) and on the other side a titanium implant was introduced...
December 28, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29277972/relationship-of-implant-stability-and-bone-density-derived-from-computerized-tomography-images
#18
Joe Merheb, Marjolein Vercruyssen, Wim Coucke, Marc Quirynen
BACKGROUND AND PURPOSE: Implant stability is one of the most important factors influencing osseointegration. Using stereolithographical guides for maximizing precision, this study aimed at investigating the relationship between implant stability and bone density derived from computerized tomography analysis. MATERIALS AND METHODS: One hundred ninety-five implants were placed in 48 patients using digitally designed stereolithographical surgical guides. Ninety-five implants were placed using a mucosa supported guide and 100 implants were placed using a bone supported guide...
December 26, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29266738/identifying-a-combined-biomarker-for-bisphosphonate-related-osteonecrosis-of-the-jaw
#19
Ki-Yeol Kim, Xianglan Zhang, In-Ho Cha
BACKGROUND: For this study, the aim was to identify combined biomarkers associated with bisphosphonate-related osteonecrosis of the jaw (BRONJ). MATERIALS AND METHODS: Microarray data for GSE7116 were downloaded from the Gene Expression Omnibus database, which contains 26 samples, including without ONJ, and 5 healthy volunteers. The combined biomarkers were identified using principal component analysis, and the pathway enrichment analyses were performed using the DAVID online tool...
December 20, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29243410/clinical-and-radiographic-peri-implant-parameters-and-proinflammatory-cytokine-levels-among-cigarette-smokers-smokeless-tobacco-users-and-nontobacco-users
#20
Zohaib Akram, Fahim Vohra, Ishfaq A Bukhari, Saeed A Sheikh, Fawad Javed
BACKGROUND: It is postulated that clinical and radiographic peri-implant parameters are worse and levels of interleukin (IL)-1β and matrix metalloproteinase (MMP)-9 in the peri-implant sulcular fluid (PISF) are higher in cigarette-smokers (CS) and smokeless-tobacco users (STU) compared with nontobacco user (NTU). PURPOSE: The present study aimed to compare clinical and radiographic peri-implant inflammatory parameters and levels of IL-1β and MMP-9 levels among CS, STU, and NTU...
December 15, 2017: Clinical Implant Dentistry and related Research
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