Marginal Alveolar Bone Stability in Extra-short Implants Placed in Posterior Atrophic Mandible- Retrospective Clinical Study PDF Download
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Author: Fernando M Abreu
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Extra short implants represent a rehabilitation option for patients with severe alveolar bone resorption. The present retrospective cohort clinical study evaluated the marginal bone stability in short and short extra implants in function with 2 years in the posterior mandible. Digital periapical radiographs of 22 patients treated with short implants 10 (GC control group), being> 6mm and 9mm in length, and extra short, 25,
Author: Fernando M Abreu
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Extra short implants represent a rehabilitation option for patients with severe alveolar bone resorption. The present retrospective cohort clinical study evaluated the marginal bone stability in short and short extra implants in function with 2 years in the posterior mandible. Digital periapical radiographs of 22 patients treated with short implants 10 (GC control group), being> 6mm and 9mm in length, and extra short, 25,
Author: Boyd J. Tomasetti
Publisher: Springer Nature
ISBN: 3030441997
Category : Medical
Languages : en
Pages : 334
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Book Description
This comprehensive guide to short implants will take the reader through their research and development, explain the clinical indications, evaluate the outcomes achieved with various implants, and explore restorative and laboratory considerations. Short implants have steadily gained greater market share in the last decade as practitioners sought alternatives to traditional length implants in order to avoid grafting procedures. Current manufacturers offer a variety of implant lengths and widths, allowing surgeons and restorative dentists the ability to select the best implant for each clinical circumstance. Cutting edge information is provided on the research and clinical results achieved utilizing a range of implants, specifically those developed by Nobel Biocare, Straumann, Jack Hahn, and Bicon. Readers will also find an extensive description of the role of ultra-short implants involving reconstruction in both cleft patients and cancer patients who have lost portions of their mandible and/or maxilla. This book is a must-have for those interested in learning how the use of short and ultra-short implants offers both surgeons and restorative dentists an opportunity to stand out from those that use only the traditional length implants.
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Languages : en
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BackgroundImplant-supported rehabilitation of the edentulous posterior jaws can be a challenging situation due to a relevant atrophy of the residual bone. An alternative approach to bone regenerative procedures is the use of short implants (intrabony implant length greater than or equal to 6 mm). It represents a less-invasive treatment with growing evidence of acceptable long-term survival rates.AimTo evaluate the survival and the marginal bone loss of 5 mm and 6 mm short implants supporting conventionally and immediately non functionally loaded fixed rehabilitations. Data are presented at 1 and 2-year follow-up from the prosthetic loading.Materials and Methods36 patients were consecutively included. Inclusion criteria were the absence of one or more maxillary or mandibular molar and premolar associated to alveolar bone atrophy (height between 6 mm and 8 mm, width at least 8 mm). Fifty-six 5mm and 6mm short implants were positioned (of these, 17 implants immediately non functionally loaded in 13 patients). Implants were positioned subcrestally and were treated with 4.1 mm immediate platform switching applied to the cover screw if submerged, healing screw or prosthetic abutment when not submerged or immediately loaded. Implant survival and marginal bone loss (MBL) were measured at 1 and 2-year follow-up from the prosthetic loading. Anatomical crown to implant (C/I) ratio was measured as well. The correlations between MBL and the use of low profile abutments, C/I ratio and single/multiple units restorations were assessed using mixed statistical models.ResultatsThe analysis included 11 males and 25 females (median age 62 years, IQR 54-68). Loading was immediate in 17 implants (30%). Low profile abutment was used in 18 implants (32%). Mean C/I ratio was 2.5 (SD 0.6). Implant-based survival was 96% at 1 year (immediate loading 94%; conventional loading 97%) and 88% at 2 years (immediate loading 94%; conventional loading 85%). 4 of these implant failures occurred in 1 patient between the first and the second year after conventional loading. Mean MBL was 0.17 mm (SD 0.30) at 1 year and 0.22 (SD (0.33) at 2 years. MBL at 1 year was not associated with immediate loading (mean difference 0.06 mm, 95%CI -0.25 to 0.13; p=0.54) vs traditional loading. MBL at 2 year was not associated with immediate loading (mean difference 0.06 mm, 95%CI -0.28 to 0.16; p=0.61) vs traditional loading. Low profile was not associated with MBL at 1 year (p=0.42) or at 2 years (p=0.72). C/I ratio was not associated with MBL at 1 year (p=0.42) or at 2 years (p=0.69).Conclusions and Clinical ImplicationsWithin the limitations of this case series, short implants showed acceptable survival rate and MBL. Comparable results were observed between immediate and conventional loading. Further evaluations with a longer follow up are required.
Author: Tomas Linkevic̆ius
Publisher:
ISBN: 9780867158342
Category :
Languages : en
Pages :
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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: Nabil Nadji
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Cholathee Verochana
Publisher:
ISBN:
Category : Dental implants
Languages : en
Pages : 172
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Book Description
Objective: To compare the stability of short implants placed in the posterior maxilla and mandible within a 4-month healing period.Material and methods: A total of 24 patients who were partially edentulous in the posterior were enrolled in the study. Thirty short implants (4.2 mm in diameter and 7.5 mm in length) with rough surface were placed with 2-stage surgical approach (15 implants each in maxilla and mandible). Resonance frequency analysis (RFA) was used to measure implant stability at time of surgical placement, at 2 months, at 3 months, and at 4 months after surgical placement. Implant stability quotient (ISQ) values of maxillary and mandibular implants were compared using Mann Whitney test and Wilcoxon Signed Ranks test.Results: Within the 4-month healing period, the ISQ values increased gradually in both maxillary and mandibular implants. The mean ISQ values of implants in the mandible were significantly greater than those in the maxilla at every respective length of healing time. The success of short implants in this study was 96.7%. Conclusions: Short implants with rough surface in the posterior maxilla had less stability than those in the posterior mandible during the 4-month healing period. Our study indicated that short implants with rough surfaces can gain a high degree of osseointegration within 2 months in the mandible and within 3 months in the maxilla if good stability was achieved at implant placement.
Author: Carlo Barausse
Publisher:
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Languages : en
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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: Duarte Nuno Silva
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ISBN:
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Languages : en
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Background: Short implants have been described as a treatment option to avoid complementary surgical procedures in cases of limited bone height. In order to increase the biomechanical properties of short implants, implant manufacturers have developed different implant surfaces and macroscopic topographies. More recently, bone level short dental implants with SLA surfaces have been launched into the market, but still there is a lack of information regarding medium-long-term survival rates.Aim: Retrospective study to evaluate the medium-term survival rates of 8-mm length bone level SLA-surfaced implants with at least 1-year follow-up.Methods and Materials: This single center retrospective study was based on the clinical records of patients who underwent dental implant therapy with Straumann Bone Level Tapered 8mm (BLT8) implants between January 2017 and April 2018 and complied with the mandatory follow-up visits. All patients were treated by a skilled surgeon with BLT8 implants using a standardized protocol. Data regarding maxillary location, regeneration procedure, date of surgery, date and time of loading, final follow- up appointment as well as patient rehabilitation (single unit, partial, total) were obtained following ethics committee approval.Early failure was defined as an implant that failed to integrate and was removed before 6 or 3 months for implants placed with and without regenerative procedures, respectively. Late failure was defined as implant removal with prosthetic loading following the osteointegration period.Results: A total of 214 BLT8 implants were inserted in 99 patients. 115 (53.7%) implants had a regular diameter of 4.1mm and 99 (46.3%) a narrow diameter of 3.3mm. The posterior mandible (36.0%) and the posterior maxilla (29.9%) were the most frequent locations, as opposed to the anterior mandible, which presented the lowest percentage of short implants placed (13.1%).Immediate loading was performed in 75 (35.0%) implants and mostly used as posterior implants in full arch rehabilitations. 212 implants received prosthetic load, of which 86.0% were over splinted implants and 14.0% over single unit implants.214 implants were evaluated for early failure and 212 for late failure. Of those, one implant failed in each evaluated period, which resulted in a survival rate of 99.5% for early and late failure with no statistical differences between them (p>0.05). Conclusions and Clinical Implications: Within the limitations of this study the Bone Level SLA-surfaced 8 mm length implants showed high survival rates within the evaluated follow up period, comparable to those described in the literature for the standard-length implants. Further follow-up studies with larger samples and longer follow-ups are required to identify factors that could interfere in the survival and success rates of short dental implants.
Author: Georgios Romanos
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 152
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Book Description
Romanos (implant dentistry, University of New York) details the conditions necessary for successful immediate loading of implants in the posterior area of the mandible, so that this therapeutic concept can be implemented in daily practice. An introductory chapter examines the roles of implant material, surface morphology, and implant form in osseoi
