A comparison of two implants with conical vs internal hex connections: 1-year post-loading results from a multicentre, randomised controlled trial (original) (raw)
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2021
Purpose: To compare implant failure, complications and radiographic bone level changes of dental implants with conical versus internal hex connections, 5 years after loading. Methods: A total of 90 patients with partial edentulous were selected and randomly divided into two equal groups (n=45) in order to be subjected to implant positioning either with conical connection or with internal hex connection at three dental offices. Patients were followed for a period of 5 years. Outcomes considered were implant failures, any complications and marginal bone level changes. Results: Three patients (6.7%) belonging to the conical group and one patient (2.2 %) belonging to the internal hex group dropped out. One implant (1.5%) failed in the conical group versus two implants (2.6%) in the internal hex group. There were no statistically significant differences in implant failures between the two groups (2.4% vs. 2.3%, difference 0.1%; 95% CI: -0.9; 5.1; p=0.584). Four complications occurred in ...
European journal of oral implantology, 2013
To compare implant failure, prosthesis failure and radiographic bone level changes of immediate non-occlusal loading versus early loading in partially edentulous patients 3 years after implant placement. A total of 80 patients with partial edentulism were selected for a two implant-supported immediate restoration and randomised to immediate loading (test group) or early loading (control group) after 2 months, 40 patients for each group. To be included in the study, implants had to be inserted with a torque ≥ 30 Ncm. In the test group, implants were provided with non-occluding temporary restorations. In the control group, healing abutments were attached and implants were left to heal nonsubmerged. Definitive prostheses were delivered 2 months after surgery with full occlusal contacts. The outcome variables were implant failure, prosthesis failure, complications and radiographic bone level changes at implants 3 years after loading. The assessor was blinded to group assignment. Eighty-...
Clinical and radiographic classification of implant supported prosthesis for edentulous patients
Periodontology, 2019
Relevance. In domestic and foreign professional literature there is a lack of aggregated consolidated data about immediate long span implant supported prosthesis which could be fundamental in making decision making process during the treatment planning stage, as well as at the estimation of quality of implant supported prosthetics. The aim of this study – the creation of a conceptual model of the standard implant prosthetics for edentulous patients.Materials and methods. A comprehensive examination and implantation prosthetics 382 patients aged 38 to 84 years (211 women, 171 men) with 582 implant supported prosthesis of various types, supporting on implants "Nobel Replace Select / Groove», «Nobel Parallel CC», «Nobel Speedy Groove», «Nobel Trefoil CC» (3775 implants). We have created a new clinical and radiographic classifcation of implant-supported prosthesis for edentulous patients.Result. As a result of the classifcation in the I (1-2 implants) class rallied 6.2% of implant ...
BioMed Research International, 2021
Objective. The objective of the present review is to assess the implant survival, marginal bone loss, and biomechanical features of narrow-diameter implants (2.5-3.5 mm) supporting or retaining full-arch fixed or removable restorations. Materials and Methods. Three operators screened the literature (PubMed, Cochrane Library, and Google Scholar) and performed a hand search on the main journals that focus on implantology until 24 March 2019. Only articles that considered full-arch restorations supported or retained by narrow-diameter implants (2.5-3.5 mm) were considered if they have a minimum of 10 patients and a mean follow-up of at least 6 months. The outcome variables were survival of implants and marginal bone loss. The review was performed according to the PRISMA statements. Risk of bias assessment was evaluated. Failure rates were analyzed using random effect Poisson regression models to obtain the summary estimate of 5-year survival rate and marginal bone loss. Results. A tota...
European review for medical and pharmacological sciences, 2018
OBJECTIVE The aim of this study was to find out the rates of survival and success of implant rehabilitation, and the influence of some risk indicators on the medium- and long-term prognosis. PATIENTS AND METHODS Of the 102 patients eligible for this study rehabilitated with dental implants during the years 2009-2015, 75 patients with 156 implants of different implant systems placed and loaded by the same team were recalled. For each subject, pocket-probing depth, bleeding on probing, plaque buildup, mobility of the fixtures, and the presence/absence of prosthetic complications were recorded. Radiographic evaluation was based on the analysis of bone levels around the fixtures, as shown by intraoral radiographs. RESULTS The average follow-up was 4.4 years, ranging from 1.5 to 7.8 years. One hundred and fifty-four of the implants survived, while two implants failed; 98.8% of the prostheses survived, while 75.9% were successful. Success was achieved in 90.4% of implants and in 80% of pa...
Dentistry 3000, 2020
Purpose: To compare and evaluate the efficacy of strategic implant® placement followed by immediate loading in regard to primary stability, quality of bone and survival and success of implants. Material and Methods: This prospective cohort study included total 26 patients were selected from both sex, 19 males/7 females in age group of 40 to 70 years, were restored with strategic implant® irrespective of the quality and quantity of cancellous/alveolar bone following immediate functional loading protocols. 8 to 10 strategic implant® were placed per jaw and restored with a prosthesis within 72 hours. 447 BECES® implants, 20 BECES EX® implants, 4 KOC MICRO® implants and 2 ZDI implants were placed in the study. Result: With the follow-up period of 22 months, results with strategic implant® were of great success with no delayed complications and failure with a success rate of ~99%. Secondary complications such as abutment screw loosening/fracture and peri-implantitis were not observed wit...
Coatings
Introduction: The prosthetic connection of implants has been related to the loss of marginal bone. The aim of this study was to evaluate bone loss around external connection (EC) and internal conical connection (ICC) implants prior to prosthetic loading. Material and methods: A randomized clinical trial (RCT) was carried out, with a sample size of 93 implants (31 EC and 62 ICC) placed in 27 patients. Radiological controls were performed and stability was measured by resonance frequency analysis (RFA) on the day of placement, at 1 month and at 4 months after the placement. Results: Bone loss in EC implants was not statistically different than in ICC implants between the time of placement (T0) and the subsequent month (T1): (EC = 0.18 mm and ICC = 0.17 mm). Between one month (T1) and four months (T2): (EC = 0.39 mm and ICC = 0.19 mm) this difference was highly significant (p = 0.00). Bone loss between T0 and T2 was significantly lower in the ICC (EC = 0.57 mm and ICC = 0.36 mm), (p = ...
Immediate loading of four or six implants in completely edentulous patients
The International journal of periodontics & restorative dentistry, 2012
In this retrospective study, 44 patients received screw-retained full-arch acrylic resin provisional prostheses connected on 4 or 6 implants in the mandible or maxilla, respectively. With a mean follow-up of 17.6 months, 3 of 205 implants were lost and replaced successfully. Cosmetic fractures were shown in six patients; one abutment loosening, one abutment fracture, and one implant fracture were also observed. Prosthetic fracture was shown in one patient. Marginal bone loss reached two to five threads on 13 implants (6.4%). The results confirmed that immediate loading of 4 mandibular or 6 maxillary implants with an acrylic resin prosthesis for full-arch rehabilitation is a reliable technique in the short- and midterm.