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: 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: 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
Author: Duarte Nuno Silva
Publisher:
ISBN:
Category :
Languages : en
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Background: Implant placement is often difficult to achieve in the atrophic maxillae due to limited ridge height. The use of short implants has been suggested as an alternative treatment option to vertical bone augmentation. However, there is still a lack of information concerning the long-term predictability of short implants.Aim: The aim of this retrospective study is to evaluate the survival rate of short SLA-surfaced implants with 6- and 8 mm lengths and at least 1-year follow up.Materials and Methods: All patients that had dental implant therapy with short implants between 01 January 2015 and 31 December 2018 that complied with mandatory follow ups were included in this retrospective study. Following ethic committee approval, data was retrieved from treatment records concerning patient characteristics, total or partial edentulism, implant characteristics, anatomical location of the implant, type of regeneration procedure, time of loading, date of placement, failure and final follow-up appointment. All patients in the study were treated by 3 experienced surgeons with Straumann Tissue Level comprising 6- (TL6) or 8 mm (TL8) implants, using a standardized surgical procedure. 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 199 patients received 191 TL6 and 156 TL8 dental implants with a follow up that ranged between 1 and 4 years. Most of the implants (93.7%) had a diameter of 4.1 mm, with the others (6.3%) having a diameter of 3.3 mm. The most frequent indication for short implant placement was the restoration of a partially edentulous arch (59.8%). The most common locations were the posterior mandible (63.4%) and the posterior maxilla (32.6%). The success rates for early failure were 98.4% and 99.4%, and for late failure (n=326) 99.4% and 99.3% for TL6 and TL8, respectively. No significant statistically differences were found regarding the different lengths for early and late failure (P>0.05).Conclusions and Clinical Implications: Within the limitations of this retrospective study, the 6- and 8 mm SLA implants evaluated demonstrated an overall medium-term survival rate with no significant differences between them, which may be compared to that of standard-length implants.
Author: Jakub Hadzik
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Aim or purpose: Short dental implants are considered to be an alternative method of treatment to a maxillary sinus elevation and bone augmentation procedure at the sites of reduced alveolar ridge height.When the era of dental implantology began, clinicians started using certain guidelines associated with natural teeth for the implant supported fixed crowns. It was taken for granted, that the length of an implant in alveolar bone (the equivalent of root) should exceed the length of the superstructure. The aim of the study was to determine if implant length and the crown to implant (c/i) ratio influences the implant stability and the loss of the marginal bone level (MBL). Materials and methods: The research group was n=30 patients who had single tooth implant placed in maxilla, two types of implants were used: short (L6u00d84mm) and regular (L11u00d84mm). The evaluation, was based on patientu2019s clinical (Periotest) and radiological examination (CBCT, periapical radiograph). Radiographs were taken initially and after 36 months to assess the crown-implant ratio and to measure MBL. The secondary implant stability was measured with Periotest after 36month. Results: The evaluation of implant stability after 36 months showed good result of secondary stability in both groups (0,93u00b13,39 PTV and 1,0u00b12,7 PTV for short and regular implants). The MBL loss was low (0,22u00b10,46mm and 0,34u00b10,24mm for short and regular implants) and similar in both groups. No statistically significant correlation between c/i ratio and the secondary stability was found. No significant correlation was observed for the c/i and marginal bone loss. Conclusions: Short implants can be successfully used to support single crowns. Clinical performance of short implants is comparable to regular implants. No negative influence of the c/i ratio on the MBL and implant stability was found The study was supported by the Astra Tech Grant Nr.D-2010-34.
