A 5-year Randomized Comparison of 6 Mm with 11 Mm Implant Length, Diameter 4.0mm PDF Download
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Author: Henny Meijer
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Background:The use of short implants expands treatment options and reduces the need for significant bone augmentation procedures in caseswith diminished bone height in edentulous areas. Recent clinical studies suggest similar survival rates to longer implants. (Rossi et al2016, 2018, Pieri et al 2017 and Naeni et al 2018). Short implants are most often placed in compromised bone situations. The presentstudy compares test and control implants under the same conditions.Aim/Hypothesis:The aim of this multicentre randomized controlled study was to compare the clinical performance of implants with a length of 6 mmwith an 11mm control group, when using early loading in the (pre)molar region in both maxilla and mandible. This paper will presentthe five-year data of the study.Materials and Methods:Six study sites were involved in this international randomized controlled multi-center study. To be included, patients needed to be:between the ages of 20 to 70 years at enrolment, a history of edentulism in the study area for at least 4 months, adjacent teeth tohave natural roots, presence of an opposing dentition and sufficient bone volume to accommodate at least an 11 mm implant.Ninety-five patients with two or three teeth missing in the premolar and molar regions were included. Each patient was randomlyallocated to treatment groups to receive implants with a length of either 6 mm or 11 mm (OsseoSpeedTM 4.0 S), Astra Tech ImplantSystem, Dentsply Sirona Implants. Implants were placed using a one-stage surgical procedure, with loading after 6-7 weeks andrestored with a screw-retained fixed prosthesis. Clinical and radiographic examinations were performed pre-operatively, post-surgery,loading, 6 and 12 months after restoration placement, and annually thereafter.Results:In total 209 implants were inserted (63% mandible, 37% maxilla). From loading to the 5-year follow-up, a mean marginal bone levelchange of 0.02 u00b10.52 mm (bone gain) in the 6 mm group and -0.18 u00b11.05 mm (bone loss) in the 11 mm group was found (P-value:0.923; Mann-Whitney U test). Presence of bleeding on probing was detected around 44% of the 6 mm implants and 33% of the 11mm implants. Probing pocket depths were generally shallow, with a mean of 2.57 u00b10.75 mm in the 6 mm group and 2.91 u00b11.53 mm inthe 11 mm group at time of the 5-year follow-up. Two 6 mm implants failed to integrate (early loss) and one was lost before the 2-yearevaluation. In the 11mm group 1 implant was lost 4 weeks after loading due to bone loss. Besides the loss of these four implants, nocomplications were recorded in the two treatment groups during the five years in use. This give a cumulative survival rate of 93.6% forthe subjects with 6 mm implants and 97.8% for the control group, five years post loading.Conclusions and Clinical Implications:The final data from this randomized multi-center study with a 5-year follow-up indicates that treatment with the Astra Tech ImplantsSystem short implant (6 mm) is as reliable as treatment with implants of standard length (11 mm). This provides a good treatmentoption in situations with limited bone height in the premolar and molar regions.
Author: Henny Meijer
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Background:The use of short implants expands treatment options and reduces the need for significant bone augmentation procedures in caseswith diminished bone height in edentulous areas. Recent clinical studies suggest similar survival rates to longer implants. (Rossi et al2016, 2018, Pieri et al 2017 and Naeni et al 2018). Short implants are most often placed in compromised bone situations. The presentstudy compares test and control implants under the same conditions.Aim/Hypothesis:The aim of this multicentre randomized controlled study was to compare the clinical performance of implants with a length of 6 mmwith an 11mm control group, when using early loading in the (pre)molar region in both maxilla and mandible. This paper will presentthe five-year data of the study.Materials and Methods:Six study sites were involved in this international randomized controlled multi-center study. To be included, patients needed to be:between the ages of 20 to 70 years at enrolment, a history of edentulism in the study area for at least 4 months, adjacent teeth tohave natural roots, presence of an opposing dentition and sufficient bone volume to accommodate at least an 11 mm implant.Ninety-five patients with two or three teeth missing in the premolar and molar regions were included. Each patient was randomlyallocated to treatment groups to receive implants with a length of either 6 mm or 11 mm (OsseoSpeedTM 4.0 S), Astra Tech ImplantSystem, Dentsply Sirona Implants. Implants were placed using a one-stage surgical procedure, with loading after 6-7 weeks andrestored with a screw-retained fixed prosthesis. Clinical and radiographic examinations were performed pre-operatively, post-surgery,loading, 6 and 12 months after restoration placement, and annually thereafter.Results:In total 209 implants were inserted (63% mandible, 37% maxilla). From loading to the 5-year follow-up, a mean marginal bone levelchange of 0.02 u00b10.52 mm (bone gain) in the 6 mm group and -0.18 u00b11.05 mm (bone loss) in the 11 mm group was found (P-value:0.923; Mann-Whitney U test). Presence of bleeding on probing was detected around 44% of the 6 mm implants and 33% of the 11mm implants. Probing pocket depths were generally shallow, with a mean of 2.57 u00b10.75 mm in the 6 mm group and 2.91 u00b11.53 mm inthe 11 mm group at time of the 5-year follow-up. Two 6 mm implants failed to integrate (early loss) and one was lost before the 2-yearevaluation. In the 11mm group 1 implant was lost 4 weeks after loading due to bone loss. Besides the loss of these four implants, nocomplications were recorded in the two treatment groups during the five years in use. This give a cumulative survival rate of 93.6% forthe subjects with 6 mm implants and 97.8% for the control group, five years post loading.Conclusions and Clinical Implications:The final data from this randomized multi-center study with a 5-year follow-up indicates that treatment with the Astra Tech ImplantsSystem short implant (6 mm) is as reliable as treatment with implants of standard length (11 mm). This provides a good treatmentoption in situations with limited bone height in the premolar and molar regions.
Author: Pierluigi Balice
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages :
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AIM: To compare, clinically and radiographically, short dental implants (6 mm) to long implants (11-15 mm) placed with sinus grafting. METHODS: Participants with 5-7 mm of bone height in the posterior maxilla were randomly allocated to receive short implants (GS) or long implants with sinus grafting (GG). Implants were loaded with single crowns 6 months after placement (PR). Patients were re-evaluated up tp 60 months after loading (FU-5 years). Outcome variables included: marginal bone level alteration (MBL), implant success and survival rate, periodontal probing depth (PPD), bleeding on probing (BoP), plaque control record (PCR) and crown-to-implant ratios (C/I). Statistical analysis was performed using non-parametric tests. RESULTS: 13 patients, 15 implants were re-evaluated at FU-5 years. Intergroup comparison reported no statistical differences in marginal bone loss from baseline to 5 years (GS,-0.33 ± 0.29/GG, +0.32 ± 0.9, p=0.233). No statistical differences were found for PD, BoP and PCR. CONCLUSION: Both treatment modality provided similar outcomes.
Author: Carlo Barausse
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Purpose: To evaluate whether 5-mm short dental implants could be an alternative to augmen- tation with anorganic bovine bone and placement of at least 10-mm long implants in posterior atrophic jaws.Materials and methods: Fifteen patients with bilateral atrophic mandibles (5 to 7 mm bone height above the mandibular canal) and 15 patients with bilateral atrophic maxillae (4 to 6 mm bone height below the maxillary sinus), and bone thickness of at least 8 mm, were randomised according to a split-mouth design to receive one to three 5-mm short implants or at least 10-mm long implants in augmented bone. Mandibles were vertically augmented with interpositional bone blocks and maxillary sinuses with particulated bone via a lateral window. Implants were placed after 4 months, submerged and loaded, after another 4 months, with provisional pros- theses. Four months later, definitive provisionally cemented prostheses were delivered. Outcome measures were: prosthesis and implant failures, any complication and peri-implant marginal bone level changes.Results: In five augmented mandibles the planned 10-mm long implants could not be placed and shorter implants (7.0 and 8.5 mm) had to be used instead. Five years after loading, six patients, five treated in the mandible and one in the maxilla, dropped out. Three prostheses (one mandibu- lar and two maxillary) failed in the short-implant group versus none in the long-implant group. In mandibles one long implant failed versus two short implants in one patient. In maxillae one long implant failed versus three short implants in two patients. There were no statistically signifi- cant differences in implant (n = 26; P = 1.00, difference = 3.85%, 95% CI: u221212.95% to 20.64%) and prosthetic (n = 26; P = 0.250, difference = 11.54%, 95% CI: u22120.74% to 23.82%) failures. Eleven patients had 16 complications at short implants (one patient accounted for six complica- tions) and 12 patients had 14 complications at long implants. There were no statistically signifi- cant differences in complications (n = 28; P = 1.00, difference = u22123.57%, 95% CI: u221230.65% to 23.51%). Five years after loading, patients with mandibular implants lost on average 1.72 mm at short implants and 2.10 mm at long implants of peri-implant marginal bone. This difference was statistically significant (difference = 0.37 u00b1 0.43 mm; 95% CI: 0.07 to 0.68 mm; P = 0.022). In maxillae, patients lost on average 1.31 mm at short implants and 1.79 mm at long implants. This difference was statistically significant (difference = 0.48 u00b1 0.43 mm; 95% CI: 0.22 to 0.74 mm; P = 0.002).
Author: Raes Stefanie
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Background:The clinical outcome of implant therapy depends, apart from patient-related factors, on implant-related factors such as surface topography, design and prosthetic connection. Although nano-surface modifications increase osseointegration, initial implant stability at time of placement is an important clinical factor in implant survival and is considered a prerequisite for early or immediate loading protocols.Aim:This RCT evaluates the 3 years outcome of modifications of the OsseoSpeed implant (Dentsply Sirona Implants, Mu00f6lndal, Sweden) in terms of survival, bone level and peri-implant health. Alterations in the OsseoSpeed EV consisted of changes in dimensions of body shape, drilling procedures, drill design and abutment connection compared to the original OsseoSpeed TX.Material and methods:120 partially edentulous patients, enrolled in five clinics, were randomized to test (EV) and control (TX). 59 subjects received 79 EV and 61 subjects received 87 TX implants respectively. Cemented permanent restorations were placed on average 9 weeks later on titanium stock abutments. Peri-implant bone level changes, plaque, probing pocket depths and bleeding indices were assessed at restoration placement (baseline), and thereafter at 6, 12 and 36 months.Statistical comparison between EV and TX were done with Mann Whitney U-test with p0.05 as significance level.Results:104 subjects (50 EV, 54 TX) were assessed (66 and 75 implants respectively) after 3 years. Three patients discontinued due to failure, 7dropped out and 6 were not available. The groups were comparable (p0.05) regarding age, gender, race, smoking habits, tooth loss reason, periodontal history, implant location, length and diameter. Mean implant insertion torque was 30u00b113 Ncm and 22u00b19 Ncm for EV and TX, indicating improved stability for the modified protocol. Five of 79 EV implants were lost (93.6%, 4 prior and 1 post-loading). One of 87 TX implants failed prior to loading (98.9%). This difference was not statistically significant. Regarding crestal bone change, a mean gain was observed from baseline to 3 years of 0.29mm (SD 0.72) and 0.21mm (SD 0.48) for EV and TX respectively. Probing pocket depth at 3 years was 2.72mm (SD 0.73) vs. 2.82mm (SD 0.73). Plaque was present on 8.3% and 9.0% of surfaces, and bleeding on probing remained stable with a mean of 17.4% and 18.0%. None of the parameters were statistically significantly different between groups (p>0.05).Conclusion:Peri-implant health did not differ between OsseoSpeed EV and TX implants. A gain in crestal bone levels was observed in both groups but EV implants indicated an improved primary stability.Although not possible to determine, it cannot be excluded that in three of the four early EV failures, a deviation in the cortical bone preparation may have contributed to the outcome.Experiences from this study led to modifications of the suggested drilling protocol including widening of the spongious bone preparation to facilitate the implant placement within recommended torque value.
Author: Charles Rivière
Publisher: Springer Nature
ISBN: 3030242439
Category : Medical
Languages : en
Pages : 346
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Book Description
This open access book describes and illustrates the surgical techniques, implants, and technologies used for the purpose of personalized implantation of hip and knee components. This new and flourishing treatment philosophy offers important benefits over conventional systematic techniques, including component positioning appropriate to individual anatomy, improved surgical reproducibility and prosthetic performance, and a reduction in complications. The techniques described in the book aim to reproduce patients’ native anatomy and physiological joint laxity, thereby improving the prosthetic hip/knee kinematics and functional outcomes in the quest of the forgotten joint. They include kinematically aligned total knee/total hip arthroplasty, partial knee replacement, and hip resurfacing. The relevance of available and emerging technological tools for these personalized approaches is also explained, with coverage of, for example, robotics, computer-assisted surgery, and augmented reality. Contributions from surgeons who are considered world leaders in diverse fields of this novel surgical philosophy make this open access book will invaluable to a wide readership, from trainees at all levels to consultants practicing lower limb surgery
Author: Tiziano Testori
Publisher: Quintessence Publishing (IL)
ISBN: 9781850972020
Category : Dental implants
Languages : en
Pages : 0
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Book Description
Patient-centered outcomes: the patient's viewpoint / M. Del Fabbro and T. Testori -- Management of the implant patient: state of the art / J. Ganeles, F. Bianchi, and F. Mandelli -- Medicolegal implications and clinical guidelines in immediate loading / M.L. Scarpelli, L. Fumagalli, and M. Del Fabbro -- The Role of computer-assisted surgery / T. Testori, L. Fumagalli, and M. Del Fabbro -- Guidelines for the collection and organization of scientific data / M. Del Fabbro and T. Testori.
Author: Michael Sonick
Publisher: John Wiley & Sons
ISBN: 0470963190
Category : Medical
Languages : en
Pages : 862
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Book Description
With the desire for dental implant therapy ever escalating, clinicians are faced with the challenge of augmenting deficient natural physiology to provide effective sites for implantation. Implant Site Development helps the clinician decide if, when, and how to create a ridge site amenable to implantation. This practical book offers solutions to many implant site preservation scenarios, discussing different treatment options, timing, a variety of materials and techniques, and their application to the clinical practice. With a unique integrated clinical approach, Implant Site Development covers a range of site development techniques. Highly illustrated, Implant Site Development presents diagrams and clinical photographs to aid with clinical judgment and will prove useful for any dental professional involved in implant therapy, from general practitioners to prosthodontists, but especially surgeons. This literature-based, yet user-friendly, reference will be indispensable to the novice or veteran clinician.
Author: Carlos Aparicio
Publisher: Quintessence Publishing (IL)
ISBN: 9781850972259
Category : Dental implants
Languages : en
Pages : 0
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Book Description
Zygomatic implants have been in use for more than two decades, and clinical follow-up studies have shown good outcomes. However, this treatment approach is only now seeing a strong resurgence of interest because it can provide patients with a fixed dentition in a short amount of time without any grafts, general anesthesia, or morbidity from a donor site, even in challenging clinical situations. Thus, a technique of relative complexity becomes minimally invasive in its application. This book reviews the state of the art of zygomatic implants and outlines several new surgical techniques and adjunctive procedures. The authors cover the fundamentals of using zygomatic implants, including the rationale behind the approach, anatomical and biomechanical considerations, imaging of the zygoma, possible sinus reactions, contraindications, prosthodontic considerations, and management of complications. This book will arm clinicians with clear guidelines for using zygomatic implants in the rehabilitation of edentulous patients.
Author: Peter Libby
Publisher: Elsevier Health Sciences
ISBN: 0323824714
Category : Medical
Languages : en
Pages : 2473
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Book Description
Current, comprehensive, and evidence-based Braunwald's Heart Disease remains the most trusted reference in the field and the leading source of reliable cardiology information for practitioners and trainees worldwide. The fully updated 12th Edition continues the tradition of excellence with dependable, state-of-the-art coverage of new drugs, new guidelines, more powerful imaging modalities, and recent developments in precision medicine that continue to change and advance the practice of cardiovascular medicine. Written and edited by global experts in the field, this award-winning text is an unparalleled multimedia reference for every aspect of this complex and fast-changing area. - Offers balanced, dependable content on rapidly changing clinical science, clinical and translational research, and evidence-based medicine. - Includes 76 new contributing authors and 14 new chapters that cover Artificial intelligence in Cardiovascular Medicine; Wearables; Influenza, Pandemics, COVID-19, and Cardiovascular Disease; Tobacco and Nicotine Products in Cardiovascular Disease; Cardiac Amyloidosis; Impact of the Environment on Cardiovascular Health, and more. - Features a new introductory chapter Cardiovascular Disease: Past, Present, and Future by Eugene Braunwald, MD, offering his unique, visionary approach to the field of cardiology. Dr. Braunwald also curates the extensive, bimonthly online updates that include "Hot Off the Press" (with links to Practice Update) and "Late-Breaking Clinical Trials". - Provides cutting-edge coverage of key topics such as proteomics and metabolomics, TAVR, diabetocardiology, and cardio-oncology. - Contains 1,850 high-quality illustrations, radiographic images, algorithms, and charts, and provides access to 215 videos called out with icons in the print version. - Highlights the latest AHA, ACC, and ESC guidelines to clearly summarize diagnostic criteria and clinical implications. - Provides tightly edited, focused content for quick, dependable reference. Flexible format options include either one or two volumes in print, as well as a searchable eBook with ongoing updates. - Enhanced eBook version included with purchase. Your enhanced eBook allows you to access all of the text, figures, and references from the book on a variety of devices.
Author: Rui Manuel de Sousa Sequeira Antunes de Almeida
Publisher: Springer
ISBN: 3319570846
Category : Medical
Languages : en
Pages : 489
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Book Description
This clinical casebook is comprised of surgical cases involving the most important cardiovascular diseases in a concise, easy-to-read format (5x8 in trim size, like other titles in this burgeoning, informal product line in the Springer clinical medicine program). Each chapter is a case that opens with a unique clinical presentation, followed by a description of the diagnosis, assessment and management techniques used to treat it, as well as questions and answers (between 8 and 10) about relevant aspects related to the diagnosis and treatment of the addressed disease. The Q&A section will broaden discussion and increase the title's pedagogical value. The casebook features 40 surgical cases in the following thematic areas: Aortic Disease, Arrhythmias, Cardiac Tumors, Coronary Insufficiency, Congenital Heart Disease, Endovascular Therapies, Heart Failure, Heart Transplantation, Mechanical Circulatory Support, Pericardial Disease, Pulmonary Embolism and Valvular Heart Disease. This book will be prepared by the Brazilian Department for Academic Leagues of Cardiovascular Surgery, within the Brazilian Society of Cardiovascular Surgery (BSCVS). This department is the section within BSCVS that consists of the academic leagues of cardiovascular surgery from each university throughout the country. In Brazil, medical academic leagues are organizations that gathers students, interns and residents to discuss a certain topic and promote research and teaching-oriented extra-class activities, supervised by a group of professors. Thus trainees will have involvement in writing the chapters and the senior professor supervisors will edit and finalize the work. Basically, each chapter is written by an intern or resident and, ultimately, his/her supervisor. As the books volume editors, doctors Almeida and Jatene will have final responsibility for the cases and overall manuscript.
