17 results on '"Testori T"'
Search Results
2. Implant placement in the esthetic area: criteria for positioning single and multiple implants.
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Testori T, Weinstein T, Scutellà F, Wang HL, and Zucchelli G
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- Crowns, Cuspid, Dental Abutments, Esthetics, Dental, Humans, Incisor, Quality of Life, Tooth Extraction, Dental Implants, Dental Prosthesis Design, Immediate Dental Implant Loading methods
- Abstract
Patient expectations from implant treatment have changed over the years and esthetics plays an important role in defining what is now called success of rehabilitation. Of the many factors that influence the outcome of the rehabilitation, the two main ones are the bone and soft-tissue deficiencies at the intended implant site. Many surgical approaches are described in terms of timing of implant placement and management of regenerative procedures. The aim of this article is to discuss the different implant placement alternatives in the esthetic area, in particular: (i) the timing of implant placement/regenerative procedures/skeletal growth/altered passive eruption; (ii) the correct three-dimensional position of the fixture between the cuspids and in the premolar area; (iii) multiple missing teeth in the esthetic area with single tooth/pontic or cantilevered options/prosthetic compensation; (iv) placement of implants into infected sites; and (v) the influence of abutment and crown morphology on implant position. Combining our long-standing clinical experience and the pertinent literature, the following conclusions can be drawn: Immediate implant placement can be a successful procedure in terms of esthetics but it is technique sensitive and requires an experienced team. Immediate placement is less traumatic to the patient as fewer surgical procedures are involved and patients tend to prefer this clinical approach with regards to quality of life. The diagnostic phase is of utmost importance, with not only bone and soft tissue deficiencies being addressed but also: skeletal growth, dental/implant soft tissue parameters such as altered passive eruption and the morphology of the roots adjacent to the edentulous area. Post-extraction immediate loading is feasible in infected sites. The correct position of the fixture should follow widely accepted guidelines but the abutment morphologies play a role in the vestibular/palatal position of the implant. The long axis of the implant, aiming at the incisal edge of the future restorations, is the most appropriate implant position when a shoulder-less abutment is used and allows a restorative crown morphology with a cervical contour resembling a natural tooth. The use of a shoulder-less abutment gives more space for the tissue to grow compared with the traditional abutment with shoulder finish line., (© 2018 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
- Published
- 2018
- Full Text
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3. Implants With and Without Laser-Microtextured Collar: A 10-Year Clinical and Radiographic Comparative Evaluation.
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Guarnieri R, Ceccarelli R, Ricci JL, and Testori T
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- Alveolar Bone Loss epidemiology, Alveolar Bone Loss etiology, Dental Plaque Index, Female, Humans, Lasers, Male, Periodontal Index, Radiography, Dental, Alveolar Bone Loss diagnostic imaging, Dental Implants adverse effects, Dental Prosthesis Design methods
- Abstract
Introduction: This article reports, after at least 10 years of follow-up, the comparative data of marginal bone loss (MBL) and periimplant soft tissue parameters, around implant with and without laser-microtextured (L) collar surface, previously reported at 3 years of follow-up., Materials and Methods: Twenty implants with L collar surface (test) were placed adjacent to 20 control implants with machined (M) collar surface in 15 partially edentulous patients, who were followed up for at least 10 years as part of a prospective longitudinal study. The plaque score, bleeding on probing (BoP) score, and probing depth (PD) were recorded at baseline and at each year follow-up examination. Mucosal recession (MR), and radiographic MBL were assessed at baseline and after at least 10 years., Results: Four patients were lost during follow-up, so the number of implants that have been followed for at least 10 years was 32 (16 tests and 16 controls). At the end of the follow-up period, no significant differences were found between the study groups regarding the presence of plaque and BoP (P > 0.05). A statistically significant difference between test and control implant was found for mean PD (2.3 ± 0.7 mm vs 3.8 ± 0.8), MBL (1.23 ± 0.21 mm vs 2.8 ± 0.9 mm), and mean MR (1.08 ± 0.4 mm vs 2.46 ± 0.3 mm)., Conclusion: Results suggest that after at least 10 years of function, implants with laser-microtexturing (L) collar surface, compared with implants with machined surface, lead to lower MBL and PD.
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- 2018
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4. Splinted and unsplinted short implants in mandibles: a retrospective evaluation with 5 to 16 years of follow-up.
- Author
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Sivolella S, Stellini E, Testori T, Di Fiore A, Berengo M, and Lops D
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- Adult, Aged, Alveolar Bone Loss diagnostic imaging, Chi-Square Distribution, Dental Prosthesis, Implant-Supported, Female, Follow-Up Studies, Humans, Jaw, Edentulous rehabilitation, Jaw, Edentulous surgery, Life Tables, Male, Mandibular Diseases surgery, Middle Aged, Multilevel Analysis, Prognosis, Radiography, Retrospective Studies, Statistics, Nonparametric, Treatment Outcome, Alveolar Bone Loss surgery, Dental Implants, Dental Prosthesis Design, Mandible surgery, Periodontal Splints
- Abstract
Background: The aim of this retrospective study is to investigate the medium- to long-term prognosis of short implants in partially and totally edentulous patients with mandibular bone atrophy., Methods: The study involved 109 patients with 280 implants placed in the mandible. The implants were 7 or 8.5 mm long and 3.75 or 4 mm in diameter. The implant surfaces were machined (M; n = 176) or rough (R; n = 104). Patients were asked to attend a radiographic and clinical follow-up, and their previous clinical records and radiographs were assessed. Implant-related and prosthetic failures and complications were recorded., Results: The mean follow-up was 9 years (range of 5 to 16 years). The survival rate (SSR) and success rate (SR) were calculated using life-table analysis for both M and R short implants. The M implants had a 16-year SSR of 95.7% and a corresponding SR of 93.9%, whereas the 16-year SSR and SR for the R implants were 97.2% and 95.2%, respectively. The mean ± SD bone resorption for all implants was 1.37 ± 0.5 mm. For marginal bone loss, there was no statistically significant difference between the two implant lengths (P = 0.38) or diameters (P = 0.34) or between the M and R implant surfaces (P = 0.47)., Conclusions: Different implant lengths, diameters, and surface treatments do not appear to influence the prognosis of the implant. Within the limitation that most of the short implants were splinted to longer implants, the reduced length of the fixtures did not worsen the long-term survival of the implant-supported fixed prostheses.
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- 2013
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5. Multicenter retrospective analysis of 201 consecutively placed camlog dental implants.
- Author
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Franchini I, Capelli M, Fumagalli L, Parenti A, and Testori T
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- Adult, Aged, Crowns, Dental Restoration Failure, Female, Humans, Life Tables, Male, Maxillary Sinus surgery, Middle Aged, Oral Surgical Procedures, Preprosthetic, Postoperative Complications, Retrospective Studies, Young Adult, Dental Implantation, Endosseous methods, Dental Implants, Dental Prosthesis Design, Dental Prosthesis, Implant-Supported, Immediate Dental Implant Loading
- Abstract
Camlog tube-in-tube implants were introduced several years ago. This multicenter retrospective analysis evaluated the success rate of Root-Line and Screw-Line tube-in-tube implants in daily use. A total of 201 implants were placed in 96 patients with different indications and implantation procedures. Implants were analyzed retrospectively after a functional loading period of 12 to 78 months. At the end of the observation period, all but 1 implant fulfilled the success criteria, resulting in an implant survival rate of 99.5%. Individual case analysis of implants in special indications, such as immediate loading, short implants, and tilted implants, did not indicate any increased risk of implant failure.
- Published
- 2011
6. Immediate provisionalization of NanoTite implants in support of single-tooth and unilateral restorations: one-year interim report of a prospective, multicenter study.
- Author
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Ostman PO, Hupalo M, del Castillo R, Emery RW, Cocchetto R, Vincenzi G, Wagenberg B, Vanassche B, Valentin A, Clausen G, Hogan P, Goené R, Evans C, and Testori T
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- Adolescent, Adult, Aged, Aged, 80 and over, Calcium Phosphates, Cementation, Crowns, Dental Etching, Dental Implantation, Endosseous, Dental Stress Analysis, Female, Humans, Male, Middle Aged, Nanoparticles, Prospective Studies, Surface Properties, Time Factors, Young Adult, Dental Implants, Single-Tooth, Dental Prosthesis Design, Dental Restoration Failure, Denture, Partial, Immediate, Denture, Partial, Temporary
- Abstract
Background: Clinical studies reporting immediate loading of endosseous implants for edentulous cases and for fixed partial restorations have been well documented with satisfactory survival rates. Implants with a recently developed, nanometer-scale surface topography (NanoTite, BIOMET 3i, Palm Beach Gardens, FL, USA), created by discrete crystalline depositions (DCD) of calcium phosphate nano-crystals onto a dual acid-etched (DAE) surface, show enhanced early fixation in preclinical studies when compared with DAE-surfaced implants. These outcomes suggest DCD-surfaced implants may be advantageous for immediate loading approaches., Objective: The aim of this prospective, multicenter, observational study is to report clinical outcomes for DCD-surfaced implants placed in immediate functional support of single- and multi-unit restorations according to an immediate loading protocol., Materials and Methods: One hundred eighty-five patients enrolled at 15 international study centers received a total of 335 implants supporting 216 immediate provisionalizations consisting of 128 single-tooth restorations and 88 fixed restorations. Of the 335 implants, 77% are located in posterior and 23% in anterior regions with 55.5% of the total in mandibles and 44.5% in maxillae. Patients were evaluated for implant mobility, gingival health, symptomatology, and radiographic outcomes., Results: At the time of this 1-year interim report, a total of 17 failures have been observed in 11 patients, yielding a cumulative survival rate of 94.9%., Conclusion: Relative to other prospective, multicenter studies of immediately loaded implants with various surface enhancements, NanoTite implants perform comparatively well when immediately provisionalized with single-tooth and fixed restorations.
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- 2010
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7. Immediate rehabilitation of the mandible with fixed full prosthesis supported by axial and tilted implants: interim results of a single cohort prospective study.
- Author
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Francetti L, Agliardi E, Testori T, Romeo D, Taschieri S, and Del Fabbro M
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- Adult, Aged, Cohort Studies, Dental Implants, Dental Stress Analysis, Denture, Complete, Lower, Female, Follow-Up Studies, Humans, Jaw, Edentulous diagnostic imaging, Life Tables, Male, Mandible, Middle Aged, Prospective Studies, Radiography, Time Factors, Torque, Treatment Outcome, Weight-Bearing, Dental Implantation, Endosseous methods, Dental Prosthesis Design, Dental Prosthesis, Implant-Supported, Denture, Complete, Immediate, Jaw, Edentulous rehabilitation
- Abstract
Purpose: The aims of this prospective study were to assess the treatment outcome of immediately loaded full-arch fixed bridges anchored to both tilted and axially placed implants for the rehabilitation of the mandible and to compare the outcome of axial versus tilted implants., Materials and Methods: Sixty-two patients (34 women and 28 men) were included in the study. Each patient received a full-arch fixed bridge supported by two axial implants and two distal tilted implants (All-on-Four, Nobel Biocare AB, Göteborg, Sweden). Loading was applied within 48 hours of surgery. Patients were scheduled for follow-up at 6, 12, 18, and 24 months, and annually up to 5 years. At each follow-up, plaque level and bleeding scores were assessed; moreover, patient's satisfaction for aesthetics and function was evaluated by a questionnaire. Radiographic evaluation of marginal bone level change was performed at 1 year., Results: The overall follow-up range was 6 to 43 months (mean 22.4 months). Forty-four patients were followed for a minimum of 1 year. No implant failures were recorded to date, leading to a cumulative implant survival and prosthesis success rate of 100%. Plaque level and bleeding scores showed progressive decrease over time, parallel to increase of satisfaction for both aesthetics and function. No significant difference in marginal bone loss was found between tilted and axial implants at 1-year evaluation., Conclusion: The present preliminary data suggest that immediate loading associated with tilted implants could be considered a viable treatment modality for the mandible.
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- 2008
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8. Immediate occlusal loading and tilted implants for the rehabilitation of the atrophic edentulous maxilla: 1-year interim results of a multicenter prospective study.
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Testori T, Del Fabbro M, Capelli M, Zuffetti F, Francetti L, and Weinstein RL
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- Adult, Aged, Aged, 80 and over, Alveolar Bone Loss diagnostic imaging, Alveolar Bone Loss rehabilitation, Dental Prosthesis Retention instrumentation, Dental Restoration Failure, Dental Stress Analysis, Denture, Complete, Immediate, Female, Follow-Up Studies, Humans, Kaplan-Meier Estimate, Male, Middle Aged, Prospective Studies, Radiography, Treatment Outcome, Dental Implantation, Endosseous methods, Dental Implants, Dental Prosthesis Design, Dental Prosthesis, Implant-Supported, Jaw, Edentulous rehabilitation, Maxilla surgery
- Abstract
Objectives: The aims of this prospective study were to assess the treatment outcome of immediately loaded full-arch fixed bridges anchored to both tilted and axially placed implants for the rehabilitation of fully edentulous maxillae and to compare the outcome of axial vs. tilted implants., Material and Methods: Forty-one patients with edentulous maxillae were included in the study. Each patient received a full-arch fixed bridge supported by four axial implants and two distal tilted implants. Loading was applied within 48 h from surgery. Patients were scheduled for follow-up at 6 months, 1 year and annually up to 5 years. Radiographic evaluation of marginal bone-level change was performed at 1 year., Results: One patient died 4 months after surgery. Thirty patients were followed for a minimum of 1 year (range 3-42 months, mean 22.1 months). Three failures were recorded at 1-year follow-up (two axial implants and one tilted). Two more implants (one tilted and one axially placed) were lost within 18 months of loading. The 1-year implant survival rate was 98.8% for both axial and tilted implants. Prosthesis success rate was 100% at 1 year. Marginal bone loss around axial and tilted implants at 12-month evaluation was similar, being, respectively, 0.9+/-0.4 (standard deviation) mm and 0.8+/-0.5 mm., Conclusions: The present preliminary data suggest that immediate loading associated with tilted implants could be considered to be a viable treatment modality for the atrophic maxilla and that there does not seem to be a different clinical outcome between tilted and axial implants.
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- 2008
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9. Immediate rehabilitation of the completely edentulous jaw with fixed prostheses supported by either upright or tilted implants: a multicenter clinical study.
- Author
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Capelli M, Zuffetti F, Del Fabbro M, and Testori T
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- Acrylic Resins, Adult, Aged, Aged, 80 and over, Alveolar Bone Loss classification, Dental Restoration Failure, Denture Design, Denture, Complete, Immediate, Female, Follow-Up Studies, Humans, Jaw, Edentulous rehabilitation, Male, Middle Aged, Survival Analysis, Time Factors, Titanium, Tooth, Artificial, Treatment Outcome, Dental Implantation, Endosseous methods, Dental Implants, Dental Prosthesis Design, Dental Prosthesis, Implant-Supported, Jaw, Edentulous surgery, Mandible surgery, Maxilla surgery
- Abstract
Purpose: The aims of this study were to assess the treatment outcome of immediately loaded full-arch screw-retained prostheses with distal extensions supported by both upright and tilted implants for the rehabilitation of edentulous jaws and to compare the outcomes of upright versus tilted implants., Materials and Methods: At 4 study centers, 342 Osseotite NT implants were consecutively placed in 65 patients (96 implants were placed in 24 mandibles and 246 implants in 41 maxillae). The 2 distal implants were tilted by 25 to 35 degrees. Provisional full-arch restorations made of a titanium framework and acrylic resin teeth were delivered within 48 hours of surgery and immediately loaded. The final prosthesis was delivered after 3 months of healing., Results: Three implants failed during the first year and another 2 within 18 months of loading in the maxilla. The cumulative implant survival rate for the maxilla was 97.59% for up to 40 months of follow-up. No implant failure was recorded for the mandible. The prosthetic success rate was 100%. Marginal bone loss around upright and tilted implants was similar. Patients were satisfied of their esthetics, phonetics, and function., Conclusion: The preliminary results of this study suggest that immediate rehabilitation of the edentulous maxilla and mandible by a hybrid prosthesis supported by 6 or 4 implants, respectively, may represent a viable treatment alternative with respect to more demanding surgical procedures. The clinical results indicate that immediately loaded tilted implants may achieve the same outcome as upright implants in both jaws.
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- 2007
10. A new implant design for crestal bone preservation: initial observations and case report.
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Baumgarten H, Cocchetto R, Testori T, Meltzer A, and Porter S
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- Adult, Alveolar Process physiopathology, Crowns, Dental Abutments, Dental Prosthesis, Implant-Supported, Gingiva pathology, Humans, Incisor, Male, Osseointegration physiology, Surface Properties, Alveolar Bone Loss prevention & control, Dental Implants, Dental Prosthesis Design
- Abstract
Following the exposure and restoration of two-piece dental implants, some change in the vertical level of the peri-implant crestal bone height has been reported. This change in crestal bone height has not, however, negatively impacted long-term implant success. This article describes how the concept of platform switching is incorporated into a new implant design as a means of reducing or eliminating the occurrence of crestal bone loss. Preliminary observations from clinicians utilizing this new implant design are herein presented.
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- 2005
11. Performance of short implants in partial restorations: 3-year follow-up of Osseotite implants.
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Goené R, Bianchesi C, Hüerzeler M, Del Lupo R, Testori T, Davarpanah M, and Jalbout Z
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- Alveolar Bone Loss etiology, Bacterial Infections etiology, Bone Density physiology, Dental Implants, Single-Tooth, Dental Prosthesis, Implant-Supported, Dental Restoration Failure, Denture, Partial, Fixed, Follow-Up Studies, Humans, Jaw, Edentulous, Partially diagnostic imaging, Jaw, Edentulous, Partially pathology, Jaw, Edentulous, Partially surgery, Mandible diagnostic imaging, Pain, Postoperative etiology, Paresthesia etiology, Periapical Tissue diagnostic imaging, Radiography, Retrospective Studies, Smoking, Surface Properties, Treatment Outcome, Dental Implants, Dental Prosthesis Design
- Abstract
Short-length implants should be at a performance disadvantage because of the more limited surface area with which to resist occlusal forces. Nevertheless, anecdotal observations find many short implants performing well in different restorative conditions. This retrospective, multicenter study seeks to compare formally implant performance based on length. The success of 7 and 8.5-mm Osseotite implants (Implant Innovations, Inc., Palm Beach Gardens, FL) was determined as: absence of mobility; no persistent and/or irreversible signs or symptoms of pain, infection, paresthesia, or violation of the mandibular canal; no evidence of peri-implant radiolucency; and no progressive crestal bone loss. Implant location, restoration type, bone density, and smoking status of the patients were recorded. A total of 188 patients received 311 short Osseotite implants that were placed mostly in soft bone and supported 216 partially edentulous cases in the maxilla or mandible. Most restorations (95.2%) are short-span fixed partial dentures placed in the posterior sextants. During 3 years of follow-up, 13 implants failed, yielding a cumulative success rate of 95.8%. In 9 of these cases, failure occurred before prosthetic loading, and in 4, the patient was a smoker. The overall success rate compares favorably with the available literature for the performance of implants in general, and short implants in particular.
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- 2005
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12. A multicenter prospective evaluation of 2-months loaded Osseotite implants placed in the posterior jaws: 3-year follow-up results.
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Testori T, Del Fabbro M, Feldman S, Vincenzi G, Sullivan D, Rossi R Jr, Anitua E, Bianchi F, Francetti L, and Weinstein RL
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- Acid Etching, Dental, Adult, Aged, Aged, 80 and over, Dental Implants, Single-Tooth, Dental Prosthesis, Implant-Supported, Dental Restoration Failure, Denture, Complete, Denture, Partial, Fixed, Female, Follow-Up Studies, Humans, Jaw, Edentulous rehabilitation, Jaw, Edentulous surgery, Jaw, Edentulous, Partially rehabilitation, Jaw, Edentulous, Partially surgery, Life Tables, Male, Mandible surgery, Maxilla surgery, Middle Aged, Prospective Studies, Stress, Mechanical, Surface Properties, Survival Rate, Treatment Outcome, Weight-Bearing, Dental Implants, Dental Prosthesis Design
- Abstract
In this prospective study, the clinical outcome of 2-months loaded implants placed in the posterior jaws was evaluated after up to 3 years of functional loading. 405 Osseotite implants with microtextured acid-etched surface were consecutively placed in 11 fully and 164 partially edentulous patients (mean age 53.5 +/- 15.3 (S.D.) years) using a one-stage technique. 282 implants, supporting 154 restorations, were placed in the mandible, while 123 implants, supporting 75 restorations, were placed in the maxilla. A total of 99 single-tooth restorations, 119 short-span fixed bridges and 11 full-arch prostheses were applied. The mean time interval from surgery to connection of provisional restoration was 2.0 +/- 0.7 months. 9 failures were reported up to 3 years of follow-up; of these, 4 mandibular and 2 maxillary implants failed during the initial healing period (before prosthesis connection), while 3 mandibular implants failed after loading. No other complications occurred throughout the study. Life table analysis showed a cumulative survival rate of 97.5% for the mandible and 98.4% for the maxilla. Post-loading implant survival rate was 98.9% for the mandible and 100% for the maxilla. The excellent outcome of this interim report suggests that microtextured Osseotite implants in the posterior jaws may safely bear a functional load applied 2 months after insertion. The results of the present study are particularly encouraging for implants placed in the maxilla, since both a significant reduction of the healing period compared to the 6 months suggested by the classical Brånemark protocol, and an excellent post-loading function may be achieved also in low quality bone.
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- 2002
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13. Immediate loading of Osseotite implants: a case report and histologic analysis after 4 months of occlusal loading.
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Testori T, Szmukler-Moncler S, Francetti L, Del Fabbro M, Scarano A, Piattelli A, and Weinstein RL
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- Bone Remodeling physiology, Connective Tissue pathology, Dental Implantation, Endosseous methods, Denture, Partial, Fixed, Follow-Up Studies, Humans, Male, Mandible physiopathology, Mandible surgery, Middle Aged, Osseointegration, Osteogenesis physiology, Surface Properties, Weight-Bearing, Wound Healing, Dental Abutments, Dental Implants, Dental Prosthesis Design, Mandible pathology
- Abstract
A growing number of clinical reports show that early and immediate loading of endosseous implants may lead to predictable osseointegration; however, these studies provide mostly short- to mid-term results based only on clinical mobility and radiographic observation. Other methods are needed to detect the possible presence of a thin fibrous interposition of tissue that could increase in the course of time and lead to clinical mobility A histologic evaluation was performed on two immediately loaded Osseotite implants retrieved after 4 months of function from one patient. He had received a total of 12 implants in the mandible, of which six were immediately loaded and six were left to heal in a submerged way Clinical and histologic osseointegration was consistently achieved for both of the retrieved immediately loaded implants. Osteogenesis and bone remodeling on the Osseotite surface were not impeded by immediate loading as shown by histomorphometric evaluation, which revealed high levels of bone-to-implant contact ranging from 78% to 85%. This immediate loading protocol involving bilateral splinting of six Osseotite implants in the mandible proved to be successful after 4 months of loading. Further long-term clinical and histologic studies are needed before introducing this immediate loading protocol as a routine procedure in implant therapy.
- Published
- 2001
14. A prospective multicenter clinical study of the Osseotite implant: four-year interim report.
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Testori T, Wiseman L, Woolfe S, and Porter SS
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- Adolescent, Adult, Aged, Aged, 80 and over, Bicuspid, Bone Density, Dental Implantation, Endosseous methods, Dental Restoration Failure, Female, Humans, Life Tables, Male, Middle Aged, Molar, Prospective Studies, Surface Properties, Titanium, Dental Implants, Dental Prosthesis Design
- Abstract
This article reports the 4-year interim results of a multicenter study evaluating the clinical performance of the Osseotite dental implant. At 4 study centers, 485 Osseotite implants were consecutively placed in 181 patients (219 were placed in the mandible and 266 in the maxilla). A total of 355 implants were placed in posterior regions. Short implants (10 mm or less) represented 31.5% (n = 153) of all implants placed in this study. Patients were restored with 210 restorations, distributed as 123 short-span prostheses, 58 single-tooth replacements, 28 long-span prostheses, and 1 maxillary overdenture. At this 4-year interim evaluation, the mean time from implant placement to the most recent evaluation was 52.6 +/- 3.0 months, with a mean loading time of 43.3 +/- 3.8 months. Of the 485 implants placed, there have been 6 failures. All implant failures occurred prior to loading and were categorized as early implant failures. Five of the 6 failures occurred in the maxilla. Only one of the 153 short implants failed to integrate. Baseline radiographs were obtained at prosthesis connection. Radiographic analysis 1 year post-restoration showed a mean bone loss of 0.09 +/- 0.7 mm. From baseline to the end of the second year of function, an overall mean bone loss of 0.13 +/- 0.8 mm was recorded, indicating no additional bone was lost after the first year of implant function. At 4 years, the cumulative implant success rate for all implants placed in this study was 98.7%, with a 99.4% success rate in the posterior mandible and 98.4% success rate in the posterior maxilla. Results of this 4-year interim analysis indicate that this implant achieved a high success rate in posterior regions and that all failures with this implant in this patient population occurred prior to implant loading. When the clinical success of implants 10 mm or shorter was compared to that of implants greater than 10 mm in length, the shorter implants in this study performed similarly to longer implants.
- Published
- 2001
15. A human histologic analysis of osseotite and machined surfaces using implants with 2 opposing surfaces.
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Lazzara RJ, Testori T, Trisi P, Porter SS, and Weinstein RL
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- Alveolar Process anatomy & histology, Bone Regeneration, Dental Implantation, Endosseous, Device Removal, Humans, Surface Properties, Titanium, Dental Implants, Dental Polishing, Dental Prosthesis Design, Osseointegration
- Abstract
A human histologic study was conducted to compare the percentage of bone-to-implant contact (BIC) at 6 months for Osseotite and machined, commercially pure titanium implant surfaces. To eliminate potential influences caused by differences in bone density at different intraoral locations, 2 mm x 5 mm, threaded, 2-surfaced titanium implants were manufactured; 1 side received the Osseotite surface modification and the opposite side maintained a machined surface. In each of 11 patients, 1 test implant was placed in the posterior maxilla (Types III and IV bone) during conventional dental implant surgery. Following 6 months of unloaded healing, the conventional implants were uncovered, and the test implants and surrounding hard tissue were removed. Histologic analysis indicated that at 6 months of unloaded healing, the mean BIC value for the Osseotite surfaces (72.96% +/- 25.13%) was statistically significantly higher (P < 0.05) than the mean BIC value for the machined surfaces (33.98% +/- 31.04%). When the BIC values for the machined and Osseotite surface pairs were ranked from high to low based on the machined BIC value range of 93% to 0%, the upper 50th percentile (20 surface pairs) mean BIC value was 86.1% +/- 16.7% for the Osseotite surfaces and 60.1% +/- 18.3% for the machined surfaces. The lower 50th percentile (19 surface pairs) mean BIC value was 59.1% +/- 25.3% for the Osseotite surfaces and 6.5% +/- 10.8% for the machined surfaces. Differences between mean BIC values for the 2 surfaces in both the upper and lower 50th percentiles were statistically significant (P < 0.05). The results of this study indicate that in the poorer quality bone typically found in the posterior maxilla, a statistically significantly higher percentage of bone contacts Osseotite surfaces when compared to opposing machined surfaces on the same implant.
- Published
- 1999
16. Long-Term Results of Intraforaminal Immediately Loaded Implants and Posterior Mandibular Regrowth Evaluation in Severely Atrophic Mandibles
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Testori, T., Clauser, T., Scaini, R., Wang, H., and Del Fabbro, M.
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Dental Implants ,Male ,immediate implant loading ,Settore MED/50 - Scienze Tecniche Mediche Applicate ,Dental Implantation, Endosseous ,Alveolar Bone Loss ,implant survival ,General Medicine ,Alveolar Ridge Augmentation ,Mandible ,atrophic mandibles ,Implant-Supported ,Dental Prosthesis Design ,Dental Prosthesis, Implant-Supported ,Dental Restoration Failure ,Female ,Follow-Up Studies ,Humans ,Treatment Outcome ,Dental Prosthesis ,Dental Implantation ,Settore MED/28 - Malattie Odontostomatologiche ,Oral Surgery ,Endosseous - Abstract
The aim of this clinical study was to verify the predictability of the rehabilitation of extremely atrophic jaws with immediately loaded short implants and evaluate posterior mandibular regrowth.A cohort of consecutive fully edentulous patients wearing complete dentures in both arches was enrolled. Periodically, implant survival and prosthetic success were assessed. After informed consent, a subsample of 10 patients who had preoperative CBCT underwent a postoperative CBCT 1 year after immediate implant loading, and 3D superimpositions of pre- and postoperative images were performed. Linear measurements of bone height were performed at two sites in each hemimandible and, on the same sections, bone density according to the qualitative gray values (GVs) was analyzed in an area of 3 mmFifty-nine fully edentulous patients (31 females, 28 males) with Class VI atrophic mandibles according to Cawood and Howell were rehabilitated with the insertion of four to five short implants (4-mm diameter, 7- or 8.5-mm long). Overall, 251 implants were immediately loaded with a fixed hybrid prosthesis. Four patients did not show up for recall visits, bringing the final number down to 55 patients (31 females, 24 males) and 231 implants. In up to 14 years of follow-up, a total of 4 implant failures were recorded (cumulative survival rate, 98.4%). The biologic complications included 9 mucositis (3.9%) and 3 peri-implantitis (1.3%) at implant-level analysis. Mechanical complications involved 9 chippings of the prosthetic restorations (17.0%). In the 10-patient subsample, the analysis showed bone growth (average of 1.2 ± 0.7 mm) in the posterior areas of the mandible. In addition, bone density was found to increase 17% to 27% with reference to the preoperative CBCT.The immediate loading of short implants may represent a feasible therapeutic option for the treatment of fully edentulous patients with severely atrophic mandibles. Bone regrowth in the posterior areas and an increase in bone density of the mandible may occur.
- Published
- 2022
17. Immediate rehabilitation of the mandible with fixed full prosthesis supported by axial and tilted implants : interim results of a single cohort prospective study
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Silvio Taschieri, Tiziano Testori, Massimo Del Fabbro, Luca Francetti, Enrico Agliardi, Davide Romeo, Francetti, L. A., Agliardi, E. L., Testori, T., Romeo, D., Taschieri, S. L. M., Del Fabbro, M., Francetti, L, Agliardi, E, Testori, T, Romeo, D, and Taschieri, S
- Subjects
Adult ,Dental Stress Analysis ,Male ,Time Factors ,medicine.medical_treatment ,Radiography ,Denture, Complete, Lower ,Dentistry ,Mandible ,medicine.disease_cause ,Prosthesis ,Weight-bearing ,Cohort Studies ,Weight-Bearing ,tilted implants ,medicine ,Humans ,Jaw, Edentulous ,Life Tables ,endosseous implants ,Prospective Studies ,edentulous mandible ,Bridge (dentistry) ,Prospective cohort study ,General Dentistry ,Aged ,Dental Implants ,Rehabilitation ,business.industry ,Dental Implantation, Endosseous ,Middle Aged ,immediate loading ,TiUnite surface ,Treatment Outcome ,Dental Prosthesis Design ,Torque ,Denture, Complete, Immediate ,Female ,Implant ,Dental Prosthesis, Implant-Supported ,Oral Surgery ,business ,Cohort study ,Follow-Up Studies - Abstract
Purpose: The aims of this prospective study were to assess the treatment outcome of immediately loaded full-arch fixed bridges anchored to both tilted and axially placed implants for the rehabilitation of the mandible and to compare the outcome of axial versus tilted implants. Materials and Methods: Sixty-two patients (34 women and 28 men) were included in the study. Each patient received a full-arch fixed bridge supported by two axial implants and two distal tilted implants (All-on-Four®, Nobel Biocare AB, Goteborg, Sweden). Loading was applied within 48 hours of surgery. Patients were scheduled for follow-up at 6, 12, 18, and 24 months, and annually up to 5 years. At each follow-up, plaque level and bleeding scores were assessed; moreover, patient's satisfaction for aesthetics and function was evaluated by a questionnaire. Radiographic evaluation of marginal bone level change was performed at 1 year. Results: The overall follow-up range was 6 to 43 months (mean 22.4 months). Forty-four patients were followed for a minimum of 1 year. No implant failures were recorded to date, leading to a cumulative implant survival and prosthesis success rate of 100%. Plaque level and bleeding scores showed progressive decrease over time, parallel to increase of satisfaction for both aesthetics and function. No significant difference in marginal bone loss was found between tilted and axial implants at 1-year evaluation. Conclusion: The present preliminary data suggest that immediate loading associated with tilted implants could be considered a viable treatment modality for the mandible.
- Published
- 2008
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