Download or read book Marginal Alveolar Bone Stability in Extra short Implants Placed in Posterior Atrophic Mandible Retrospective Clinical Study written by Fernando M Abreu and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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,

Download or read book Short Implants written by Boyd J. Tomasetti and published by Springer Nature. This book was released on 2020-07-07 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Zero Bone Loss Concepts written by Tomas Linkevic̆ius and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparative Study of Immediate Loading on Short Dental Implants and Conventional Dental Implants in the Posterior Mandible A Randomized Clinical Trial Four Months Post loading written by Khongkhunthian Pathawee and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Immediate dental implant placement and loading treatment protocol has been investigated with the promising clinical results. However, the use of short implant in this treatment option has not been performed. The purpose of the study was to compare the clinical outcomes and survival rates of immediately-loaded short implants and conventional length dental implants (Pw Plus dental implant system, Thailand) in replacing mandibular molar teeth.Materials and methodsThe clinical study was approved by the Human Experimentation Committee. Fifty implants in 46 patients were included in the study. Twenty five short dental implants (6 mm.) and 25 conventional dental implants (10 mm.) were randomly placed as single tooth replacements in the edentulous molar areas of the mandibles. Provisional, CAD-CAM, ceramic block (Shofu HC) crowns were cemented to the abutments of the implants, and immediately loaded. The clinical parameters, such as insertion torque (IT), resonance frequency analysis (RFA), marginal bone level changes, and complications, were recorded and statistically analysed.ResultsTwo short implants and two conventional implants were excluded from the study due to insufficient insertion torque (less than 35 Ncm). Two short implants disintegrated, and one conventional implant failed. The accumulate survival rate of short implants was 91.30%, compared to 95.65% for conventional implants. However, there was no significant difference between the two implant types (P (Fisheru2019s exact) = 1.00). Only minor complications were found (three provisional crown fractures with short implants and two with conventional implants).The differences in IT among the two implant types were not significant (P =.264). There was no significant difference in ISQ value for short or conventional implants between baseline (short: 73.86 u00b1 2.38 mm, conventional: 75.05 u00b1 3.26mm, P=.088) and four months after loading (short: 72.37 u00b1 1.35 mm, conventional: 72.89 u00b1 1.87 mm, P=.165). The mean change in marginal bone level four months post-loading was 0.24 u00b1 0.29 mm for short implants and 0.26 u00b1 0.29 mm for conventional implants ; there was no statistical difference between the two implant types.ConclusionsWithin the limitations of this study, the findings seem to confirm that the immediate loading of short implants is a viable option, comparable to conventional length implants in terms of implant survival, marginal bone loss and ISQ value.

Download or read book Survival and Marginal Bone Loss of Short Implants a Case Series written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Clinical Outcomes of Short Implants Placed in the Posterior Maxilla with the Indirect Sinus Elevation Technique and in the Posterior Mandible written by Nabil Nadji and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Short Implants 6mm Versus Longer Implants 11mm in Combination With Sinus Elevation Procedure in the Atrophic Maxilla Retrospective Analysis of a 5 Year Follow Up of a Randomized Clinical Trial written by Pierluigi Balice and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book A COMPARATIVE STUDY OF STABILITY OF SHORT IMPLANT IN THE POSTERIOR MAXILLA AND MANDIBLE written by Cholathee Verochana and published by . This book was released on 2013 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book 5 year RCT Comparing 5 Mm short Implants with Longer Implants in Augmented Posterior Atrophic Jaws written by Carlo Barausse and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).

Download or read book Retrospective Study of 8 mm Bone Level SLA surfaced Implants with 1 to 2 year Follow up written by Duarte Nuno Silva and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Immediate Loading of Endosseous Implants in the Posterior Mandible written by Georgios Romanos and published by . This book was released on 2005 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Immediate Placement of Osseointegrated Oral Implants Into Pathological Dentoalveolar Sites Retrospective Clinical Case serious Study written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Endosseous dental implants have been successfully utilized for the last 3 decades to restore partially and fully edentulous patients with at least 3 months healing period of the alveolar bone following tooth extraction. An increasing number of clinical publications report on immediate implant restoration in the extraction. The advantages of immediate implantation after tooth extraction are shorter treatment time, fewer surgical procedures, and ensuring optimal tooth tissue aesthetics. Frequently, however, compromised teeth that are indicated for surgery are involved with acute and chronic infectious conditions which traditionally contraindicate their immediate restoration with dental implants. A review of current literature suggests that immediate implantation in infected sites should be avoided. Recent experimental studies have corroborated this clinical experience and shown that professional alveolar socket debridement and broad-spectrum antibiotics generate adequate conditions for the bone remodelling process around immediate dental implants placed into infected sites.Background: The immediate placement of dental implants into fresh non-infected sockets is an accepted successful technique, while placement of these implants into pathological Dento-alveolar sockets is still a controversial issue.Aim/Hypothesis: The aim of this clinical case-serious study was to report, retrospectively, the survival rate of immediate dental implants placed immediately after extraction of teeth with infected Dento-alveolar sockets in the maxilla and mandible at the osseointegration period (3 months).Materials and Methods: A retrospective analysis was made of the clinical and radiographic findings corresponding to 15 consecutive patients (7 women and 8 men, between the ages 21and 59 years) with a mean age of 44.14 years (SD= 9.28). A total of 36 locking-taper Bicon dental implants (hydroxyapatite, HA-coated) were immediately placed into infected fresh extraction- sockets included radicular cysts, chronic peri-apical lesions and sub-acute periodontal and endodontic infections using the flap or flapless surgery. Retrospective data on implant position, implant size, pathological condition, and baseline radiographs were obtained from patient records. Clinical and radiographic analyses were obtained to evaluate the treatment-outcome. Data were analyzed using descriptive statistics.Results: All the implants (N=36) except 2 achieved osseointegration in 3 months follow up. This reflects a 94.44% success rate within this small study group and 5.55% failure rate. Complications were related to the reasons for tooth loss.Conclusions: This retrospective clinical case-serious study showed the possibility thatimmediate dental implant placement might be successful in infected extraction sockets.

Download or read book Retrospective Study of Short SLA surfaced Implants 6 and 8 Mm with 1 to 4 Years Follow up written by Duarte Nuno Silva and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Non splinted Single Tooth Restorations Based on Short Implants in Maxilla a Follow up Study written by Jakub Hadzik and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Survival and Complication Rates of Short Implants supported Single Crowns in the Posterior Regions with High Crown implant Ration C I A 10 year Retrospective Study written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Objectives: Short implants are an alternative in atrophic posterior jaws. The aim of this retrospective cohort study is to evaluate the survival rate, complications and patient satisfaction of short implants (u22648mm) and to investigate whether the crown-implant ratio (C/I) has impact on the long term clinical outcomes of short implants.Methods and Materials: Ninety-eight short implants were placed and restored in 65 patients. C/I were measured. For implants with C/I u2265 1, clinical examination were conducted. Implant survival, complications and patient satisfaction was recorded. Results: For 92 implants, the C/I were u2265 1.With a mean follow-up of ten years, survival rate of the 92 implants was 93.5%. The most frequent complications were peri-implantitis and soft tissue complications.Conclusions and clinical significance: Placing short implants in the posterior regions has a predictable outcome in patients with reduced bone height.

Download or read book Clinical and Radiographic Evaluation of Short Implants Placed in the Posterior Mandible written by Manrique Fonseca and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Prospect of Short Plateau Implants in Atrophic Posterior Maxilla Biomechanical Study written by Vitalij Nesvit and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Poor bone quality and anatomic restrictions significantly influence implant success in posterior maxilla. Short implants were proposed as a reasonable choice. Implant prognosis is predetermined by stress magnitudes in bone-implant interface, which are sensitive to bone and implant parameters. Plateau implants are often preferred since they reduce bone stresses and improve implant prognosis. Precise analysis of complex biomechanical systems can only be performed by finite element (FE) method.The aim of the study was to evaluate and compare the prospect of different short plateau implants placed in atrophic posterior maxilla under 120.92 N mean maximal functional load (Mericske-Stern & Zarb, 1996).5.0 mm length and 4.0 (N), 5.0 (M), 6.0 (W) mm diameter Bicon SHORT u00ae implants were studied. Their 3D models were placed in eighteen posterior maxilla segment models with types III and IV bone. They were designed in Solidworks 2016 software and had three geometries: (A) 1.0/4.0 mm, (B) 0.75/4.25 mm and (C) 0.5/4.5 mm cortical/cancellous bone layer, their size was 30u00d79u00d711 mm (length u00d7 height u00d7 width). Implant and bone were assumed as linearly elastic and isotropic. Elasticity modulus of cortical bone was 13.7 GPa, cancellous bone u2013 1.37/0.69 (type III/IV). Bone-implant assemblies were simulated in FE software Solidworks Simulation. 4-node 3D FEs were generated with a total number of up to 5,064,000. 120.92 N mean maximal oblique load (molar area) was applied to the center of 7.0 mm abutment. Von Mises equivalent stress (MES) distributions were studied to determine areas of bone overload with magnitude greater than 100 MPa in cortical and 5 MPa in cancellous bone adopted as bone tissues ultimate strength.MES maximal values were found in crestal bone. The spectrum of maximal MESs in cortical bone was between 17 MPa (III,A,W) and 55 MPa (IV,C,N). They were influenced by cortical bone thickness, bone quality and implant dimensions. MES reduction due to cortical bone thickness increase from 0.5 to 1.0 mm was 25, 35, 17% for N, M and W implants and type IV bone, while for type III it was 25, 34, 19%. Cancellous bone quality was found to have a substantial impact on biomechanical state of cortical bone: two-fold reduction of elasticity modulus (1.37 versus 0.69 GPa) corresponded to 24.2, 30.2 and 26.5% MES rise for N, M and W implants and 1.0 mm cortical bone, 26.6, 23.6 and 20.5% MES rise for N, M and W implants and 0.75 mm cortical bone, and 25.0, 23.1 and 23.8% MES rise for N, M and W implants and 0.5 mm cortical bone. MESs magnitudes in cancellous bone were found below its ultimate strength (5 MPa) only for M and W implants placed into 1.0 mm cortical bone.Stresses in posterior maxilla were influenced by cortical bone thickness, bone quality and especially implant diameter. Under 120.92 N load and 0.5u20261.0 mm cortical bone, failure of 4.0u00d75.0 mm, 5.0u00d75.0 mm, 6.0u00d75.0 mm Bicon SHORTu00ae implants was highly unlikely from the viewpoint of cortical bone overload. To avoid cancellous bone overstress, both 5.0u00d75.0 and 6.0u00d75.0 mm implants were found applicable, but only in case of 1.0 mm cortical bone.