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Dental implant connection

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https://www.readbyqxmd.com/read/28800964/the-effect-of-metal-ions-released-from-different-dental-implant-abutment-couples-on-osteoblast-function-and-secretion-of-bone-resorbing-mediators
#1
Ghada O Alrabeah, Peter Brett, Jonathan C Knowles, Haralampos Petridis
OBJECTIVES: The etiology of the reduced marginal bone loss observed around platform-switched implant-abutment connections is not clear but could be related to the release of variable amounts of corrosion products. The present study evaluated the effect of different concentrations of metal ions released from different implant abutment couples on osteoblastic cell viability, apoptosis and expression of genes related to bone resorption. METHODS: Osteoblastic cells were exposed to five conditions of culture media prepared containing metal ions (titanium, aluminum, vanadium, cobalt, chromium and molybdenum) in different concentrations representing the amounts released from platform-matched and platform-switched implant-abutment couples as a result of an earlier accelerated corrosion experiment...
August 4, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28791302/in-vitro-laser-treatment-platform-construction-with-dental-implant-thread-surface-on-bacterial-adhesion-for-peri-implantitis
#2
Hsien-Nan Kuo, Hsiang-I Mei, Tung-Kuan Liu, Tse-Ying Liu, Lun-Jou Lo, Chun-Li Lin
This study constructs a standard in vitro laser treatment platform with dental implant thread surface on bacterial adhesion for peri-implantitis at different tooth positions. The standard clinical adult tooth jaw model was scanned to construct the digital model with 6 mm bone loss depth on behalf of serious peri-implantitis at the incisor, first premolar, and first molar. A cylindrical suite connected to the implant and each tooth root in the jaw model was designed as one experimental unit set to allow the suite to be replaced for individual bacterial adhesion...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28764310/microleakage-at-the-different-implant-abutment-interface-a-systematic-review
#3
REVIEW
Sunil Kumar Mishra, Ramesh Chowdhary, Shail Kumari
INTRODUCTION: Presence of gap at the implant-abutment interface, leads to microleakage and accumulation of bacteria which can affect the success of dental implants. AIM: To evaluate the sealing capability of different implant connections against microleakage. MATERIALS AND METHODS: In January 2017 an electronic search of literature was performed, in Medline, EBSCO host and Pubmed data base. The search was focused on ability of different implant connections in preventing microleakage...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28757930/efficacy-of-a-new-coating-of-implant-abutment-connections-in-reducing-bacterial-loading-an-in-vitro-study
#4
D Lauritano, C A Bignozzi, D Pazzi, F Cura, F Carinci
BACKGROUND: Titanium is the gold standard for dental implants, since it has demonstrated excellent biocompatibility and osseointegration properties. The rate of osseointegration is however affected by the surface morphology and peri-implant infections may affect fixture and the long-term osseointegration outcome. Thus chemical composition of a coating at the implant-abutment junction (IAJ) surface is expected to play a key role in preventing bacterial infection. PURPOSE: In the present study a new antimicrobial polysiloxane coating functionalized with chlorexidine digluconate (PXT) has been tested in an in vitro model...
January 2017: Oral & Implantology
https://www.readbyqxmd.com/read/28757795/a-new-model-to-study-fatigue-in-dental-implants-based-on-probabilistic-finite-elements-and-cumulative-damage-model
#5
María Prados-Privado, José Antonio Bea, Rosa Rojo, Sérgio A Gehrke, José Luis Calvo-Guirado, Juan Carlos Prados-Frutos
The aim of this study was to predict the fatigue life of two different connections of a dental implant as in load transfer to bone. Two three-dimensional models were created and assembled. All models were subjected to a natural masticatory force of 118 N in the angle of 75° to the occlusal plane. All degrees of freedom in the inferior border of the cortical bone were restrained, and the mesial and distal borders of the end of the bone section were constrained. Fatigue material data and loads were assumed as random variables...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28742164/relationship-between-implant-stability-on-the-abutment-and-platform-level-by-means-of-resonance-frequency-analysis-a-cross-sectional-study
#6
Frederico Santos Lages, Dhelfeson Willya Douglas-de-Oliveira, Guilherme Siqueira Ibelli, Fatimah Assaf, Thallita Pereira Queiroz, Fernando Oliveira Costa
Resonance frequency analysis (RFA) has become the main tool used to assess the osseointegration of dental implants. The objective of this study was to verify the relationship between the ISQ values with different prosthetic abutments and with the implant platform. The hypothesis was that ISQ values changes according to the abutment height. Twelve patients were included, whose contribution to the study was 31 dental implants (external hexagon connection implants, 4.1x10 mm). The temporary implant-supported crown and prosthetic components were removed and the following smartpegs were inserted, one at a time: type 1, in the implant platform (G1); type A3, in the microunit component with 1mm transmucosal height (G2) and type A3, in the microunit component with 5mm transmucosal height (G3)...
2017: PloS One
https://www.readbyqxmd.com/read/28741725/cell-derived-micro-environment-helps-dental-pulp-stem-cells-promote-dental-pulp-regeneration
#7
Xuexin Zhang, Hui Li, Jingjing Sun, Xiangyou Luo, Hefeng Yang, Li Xie, Bo Yang, Weihua Guo, Weidong Tian
OBJECTIVES: The function of the dental pulp is closely connected to the extracellular matrix (ECM) structure, and ECM has received significant attention due to its biological functions for regulating cells. As such, the interaction between the ECM niche and cells is worth exploring for potential clinical uses. MATERIALS AND METHODS: In this study, dental pulp stem cell (DPSC)-derived ECM (DPM) was prepared through cell culture and decellularization to function as the cell niche, and changes in DPSC behaviour and histological analysis of dental pulp tissue regeneration were evaluated following the DPM culture...
July 25, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28741276/the-use-of-a-biphasic-calcium-phosphate-in-a-maxillary-sinus-floor-elevation-procedure-a-clinical-radiological-histological-and-histomorphometric-evaluation-with-9-and-12-month-healing-times
#8
W F Bouwman, N Bravenboer, J W F H Frenken, C M Ten Bruggenkate, E A J M Schulten
BACKGROUND: This study evaluates the clinical, radiological, histological, and histomorphometric aspects of a fully synthetic biphasic calcium phosphate (BCP) (60% hydroxyapatite and 40% ß-tricalcium phosphate), used in a human maxillary sinus floor elevation (MSFE) procedure with 9- and 12-month healing time. METHODS: A unilateral MSFE procedure, using 100% BCP, was performed in two series of five patients with healing times of 9 and 12 months respectively. Clinical and radiological parameters were measured up to 5 years postoperatively...
December 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/28736922/effect-of-implantoplasty-on-fracture-resistance-and-surface-roughness-of-standard-diameter-dental-implants
#9
Xavier Costa-Berenguer, Marta García-García, Alba Sánchez-Torres, Mariano Sanz-Alonso, Rui Figueiredo, Eduard Valmaseda-Castellón
OBJECTIVE: To assess the effect of implantoplasty on the fracture resistance, surface roughness, and macroscopic morphology of standard diameter (4.1 mm) external connection dental implants. MATERIALS AND METHODS: An in vitro study was conducted in 20 screw-shaped titanium dental implants with an external connection. In 10 implants, the threads and surface were removed and polished with high-speed burs (implantoplasty), while the remaining 10 implants were used as controls...
July 23, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28713730/application-of-orthodontic-immediate-force-on-dental-implants-histomorphologic-and-histomorphometric-assessment
#10
Mansour Rismanchian, Sayed Hamid Raji, Sayed Mohammad Razavi, Danesh Teimouri Rick, Amin Davoudi
AIMS: Application of force to implants is helpful, especially in orthodontic-implant therapies. The aim of this study was a histomorphologic and histomorphometric evaluation of peri-implant bone after immediate orthodontic and orthopedic forces comparing them with a control group. MATERIALS AND METHODS: Eighteen dental titanium implants were inserted in the premolar region of three dogs. Implants were divided into three groups: (1) group with immediate orthodontic force of 300 NC, (2) group with immediate orthopedic force of 600 NC, and (3) control group...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28713600/periodontics-implantology-and-prosthodontics-integrated-the-zenith-driven-rehabilitation
#11
Fausto Frizzera, Mateus Tonetto, Guilherme Cabral, Jamil Awad Shibli, Elcio Marcantonio
A customized treatment plan is important to reach results that will satisfy the patient providing esthetics, function, and long-term stability. This type of oral rehabilitation requires professionals from different dental specialties where communication is a major key point. Digital Smile Design allows the practitioners to plan and discuss the patient's condition to establish the proper treatment plan, which must be driven by the desired zenith position. The ideal gingival position will guide the professionals and determine the need to perform surgical procedures or orthodontic movement before placing the final restorations...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28708914/misfit-of-three-different-implant-abutment-connections-before-and-after-cyclic-load-application-an-in-vitro-study
#12
Sergio Alexandre Gehrke, Rafael Arcesio Delgado-Ruiz, Juan Carlos Prados Frutos, María Prados-Privado, Berenice Anina Dedavid, Jose Manuel Granero Marín, José Luiz Calvo Guirado
PURPOSE: This study aimed to evaluate the misfit of three different implant-abutment connections before and after cycling load. MATERIALS AND METHODS: One hundred twenty dental implants and correspondent prefabricated titanium abutments were used. Three different implant-abutment connections were evaluated: Morse taper (MT group), external hexagon (EH group), and internal hexagon (IH group). Forty implants and 40 abutments were used per group. The parameters for the mechanical evaluation were set as: 360,000 cycles, load of 150 N, and frequency of 4 Hz...
July 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28691474/cone-morse-implant-connection-system-significantly-reduces-bacterial-leakage-between-implant-and-abutment-an-in-vitro-study
#13
A Baj, A Bolzoni, A Russillo, D Lauritano, A Palmieri, F Cura, F J Silvestre, A B Giannì
Osseointegrated implants are very popular dental treatments today in the world. In osseointegrated implants, the occlusal forces are transmitted from prosthesis through an abutment to a dental implant. The abutment is connected to the implant by mean of a screw. A screw is the most used mean for connecting an implant to an abutment. Frequently the screws break and are lost. There is an alternative to screw retained abutment systems: the cone-morse connection (CMC). The CMC, thanks to the absence of the abutment screw, guarantees no micro-gaps, no micro-movements, and a reduction of bacterial leakage between implant and abutment...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28682282/four-year-follow-up-of-a-polymethyl-methacrylate-based-bone-cement-graft-for-optimizing-esthetics-in-maxillary-anterior-implants-a-case-report
#14
Érica Miranda De Torres, Luis Fernando Naldi, Karina Oliveira Bernades, Alexandre Leite Carvalho
Tooth loss promotes bone and gingival tissue remodeling, thus breaking the harmony between the residual ridge and natural teeth. This is critical in the anterior region of the mouth, and the integration of several dental specialties is often essential to successful rehabilitation with implants. This article describes a multidisciplinary approach to implant-supported oral rehabilitation in the maxillary anterior region, presenting a new technique for optimizing esthetics in implants. A 19-year-old woman was missing her central and lateral incisors and had 2 dental implants in the lateral incisor sites...
July 2017: General Dentistry
https://www.readbyqxmd.com/read/28675640/characterization-of-serum-proteins-attached-to-distinct-sol-gel-hybrid-surfaces
#15
Nuno Araújo-Gomes, Francisco Romero-Gavilán, Ana M Sánchez-Pérez, Marilo Gurruchaga, Mikel Azkargorta, Felix Elortza, María Martinez-Ibañez, Ibon Iloro, Julio Suay, Isabel Goñi
The success of a dental implant depends on its osseointegration, an important feature of the implant biocompatibility. In this study, two distinct sol-gel hybrid coating formulations [50% methyltrimethoxysilane: 50% 3-glycidoxypropyl-trimethoxysilane (50M50G) and 70% methyltrimethoxysilane with 30% tetraethyl orthosilicate (70M30T)] were applied onto titanium implants. To evaluate their osseointegration, in vitro and in vivo assays were performed. Cell proliferation and differentiation in vitro did not show any differences between the coatings...
July 4, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28656952/-the-clinical-and-expert-evaluation-of-the-unfavourable-consequences-of-the-provision-of-the-dental-implantation-treatment
#16
A A Gusarov, T G Popova, V A Fetisov, E Yu Kuraeva, E A Shoniya
The clinical and expert evaluation of the unfavourable consequences of the provision of the inadequate dental implantation treatment has demonstrated the ever increasing number of justified complaints and civilian lawsuits instituted annually in connection with the infringements of health associated with the poor quality of the medical care provided to the patients. The authors present the results of commission forensic medical expertise performed on account of the civilian lawsuits instituted by a 74 year-old patient K...
2017: Sudebno-meditsinskaia Ekspertiza
https://www.readbyqxmd.com/read/28632255/intake-of-proton-pump-inhibitors-is-associated-with-an-increased-risk-of-dental-implant-failure
#17
Bruno Ramos Chrcanovic, Jenö Kisch, Tomas Albrektsson, Ann Wennerberg
PURPOSE: To investigate the association between the intake of proton pump inhibitors (PPIs) and the risk of dental implant failure. MATERIALS AND METHODS: The present retrospective cohort study is based on patients consecutively treated between 1980 and 2014 with implant-supported/retained prostheses at one specialist clinic. Modern endosseous dental implants with cylindrical or conical design were included, and only complete cases were considered; ie, only those implants with information available for all variables measured were included in the regression model analysis...
June 20, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28612506/synergistic-interactions-between-corrosion-and-wear-at-titanium-based-dental-implant-connections-a-scoping-review
#18
REVIEW
K Apaza-Bedoya, M Tarce, C A M Benfatti, B Henriques, M T Mathew, W Teughels, J C M Souza
Two-piece implant systems are mainly used in oral implantology involving an osseointegrated implant connected to an abutment, which supports prosthetic structures. It is well documented that the presence of microgaps, biofilms and oral fluids at the implant-abutment connection can cause mechanical and biological complications. The aim of this review paper was to report the degradation at the implant-abutment connection by wear and corrosion processes taking place in the oral cavity. Most of the retrieved studies evaluated the wear and corrosion (tribocorrosion) of titanium-based materials used for implants and abutments in artificial saliva...
June 14, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28573264/effects-of-combining-insulin-like-growth-factor-1-and-platelet-derived-growth-factor-on-osteogenesis-around-%C3%A2-dental-implants
#19
Wan Lin Zhou, Lin Lin Li, Xin Ru Qiu, Qi An, Mei Hua Li
OBJECTIVE: To explore the effects of the combination of insulin-like growth factor 1 (IGF-1) and platelet-derived growth factor (PDGF) on bone formation around dental implants. METHODS: A total of 24 adult rabbits were included in this experiment. Titanium machine-polished dental implants were placed in the iliac bones to simulate dental implants in the alveolar bone. The rabbits were randomly divided into four groups; a saline treated control group (NS), an IGF-1 treated group, a PDGF-BB treated group, and a combination of IGF-1 and PDGF-BB treated group...
2017: Chinese Journal of Dental Research
https://www.readbyqxmd.com/read/28567141/reproducibility-of-a-digital-method-to-evaluate-soft-tissue-modifications-a-study-of-inter-and-intra-operative-measurement-concordance
#20
Davide Rancitelli, Marco Cicciù, Francesco Lini, Davide Fumagalli, Anna Chiara Frigo, Carlo Maiorana
BACKGROUND: The soft tissue healing and quality around dental implant is a current debated topic in the recent literature. The free gingival margin and the quantity and quality of the mucosa around teeth and surrounding dental implants still determine the hard and soft tissue healing status. OBJECTIVE: The aim of this study is to assess inter and intra-operative measurement concordance of a method aimed at evaluating the apico-coronal migration of free gingival margin, using intra-oral photography...
2017: Open Dentistry Journal
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