scholarly journals Long-Term Comparison of Survival and Marginal Bone of Implants with and without Sinus Augmentation in Maxillary Molars within the Same Patients: A 5.8- to 22-Year Retrospective Study

2021 ◽  
Vol 10 (7) ◽  
pp. 1360
Author(s):  
Won-Bae Park ◽  
Ji-Young Han ◽  
Kyung Lhi Kang
Keyword(s):  
Statistical Significance ◽  
Frailty Model ◽  
Implant Failure ◽  
Implant Survival ◽  
Marginal Bone Loss ◽  
Related Factors ◽  
Sinus Augmentation ◽  
Maxillary Molars ◽  
Posterior Maxilla

Maxillary sinus floor augmentation (MSFA) is widely used and considered a predictable procedure for implant placement. However, the influence of MSFA on implant survival and marginal bone loss (MBL) is still inconclusive. The purpose of this retrospective observational study is to evaluate the long-term genuine influence of MSFA on the survival and MBL of implants by comparing those with and without MSFA only in maxillary molars within the same patients. Thirty-eight patients (28 male and 10 female), with a total of 119 implants, received implants with and without MSFA, and were followed up for 5.8 to 22 years. Patient- and implant-related factors were assessed with a frailty model for implant survival and with generalized estimation equations (GEE) for MBL around the implant. No variables showed a statistical significance for implant failure in the frailty model. In GEE analysis for MBL, MSFA did not show any statistical significance. In conclusion, MSFA demonstrated no significant influence on implant failure and MBL in posterior maxilla in this study.

scholarly journals Long-term Short Implants Performance: Systematic Review and Meta-Analysis of the Essential Assessment Parameters

2015 ◽  
Vol 26 (4) ◽  
pp. 325-336 ◽  
Author(s):  
Thais Marques Simek Vega Gonçalves ◽  
Sergio Bortolini ◽  
Matteo Martinolli ◽  
Bruna Fernandes Moreira Alfenas ◽  
Daiane Cristina Peruzzo ◽  
...  
Keyword(s):  
Systematic Review ◽  
Survival Rate ◽  
Clinical Performance ◽  
Meta Analysis ◽  
Implant Failure ◽  
Cochrane Library ◽  
Implant Survival ◽  
Implant Survival Rate ◽  
Short Implants

<p>Lack of standard criteria in the outcome assessment makes it difficult to draw conclusions on the clinical performance of short implants and, under these circumstances, determine the reasons for implant failure. This study evaluated, through a systematic review of the literature and meta-analysis, the essential parameters required to assess the long-term clinical performance of short and extra-short implants. Electronic databases (Pubmed-MEDLINE, Cochrane Library Database, Embase, and Lilacs) were searched by two independent reviewers, without language limitation, to identify eligible papers. References from the selected articles were also reviewed. The review included clinical trials involving short dental implants placed in humans, published between January 2000 and March 2014, which described the parameters applied for outcome's measurements and provided data on survival rates. Thirteen methodologically acceptable studies were selected and 24 parameters were identified. The most frequent parameters assessed were the marginal bone loss and the cumulative implant survival rate, followed by implant failure rate and biological complications such as bleeding on probing and probing pocket depths. Only cumulative implant survival rate data allows meta-analysis revealing a positive effect size (from 0.052 (fixed) to 0.042 (random)), which means that short implant appears to be a successful treatment option. Mechanical complications and crown-to-implant (C/I) ratio measurement were also commonly described, however, considering the available evidence; no strong conclusions could be drawn since different methods were used to assess each parameter. By means of this literature review, a standard evaluation scheme is proposed, being helpful to regiment further investigations and comparisons on future studies.</p>

scholarly journals Long-Term Clinical Behavior and Complications of Intentionally Tilted Dental Implants Compared with Straight Implants Supporting Fixed Restorations: A Systematic Review and Meta-Analysis

Biology ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 509
Author(s):  
Jorge Cortés-Bretón Brinkmann ◽  
Ignacio García-Gil ◽  
Patricia Pedregal ◽  
Jesús Peláez ◽  
Juan Carlos Prados-Frutos ◽  
...  
Keyword(s):  
Systematic Review ◽  
Dental Implants ◽  
Meta Analysis ◽  
Cochrane Central Register ◽  
Success Rates ◽  
Implant Survival ◽  
Marginal Bone Loss ◽  
Clinical Behavior ◽  
Manual Search

The aim of this study was to assess the long-term clinical behavior of straight implants in comparison with intentionally tilted dental implants (ITDI) supporting fixed restorations in partial or total edentulous arches, analyzing implant survival and success rates, complications, and marginal bone loss (MBL) after >5 years of function. An electronic search was conducted in five electronic databases (MEDLINE/Pubmed, Embase, Web of Science, Scopus, and Cochrane Central Register of Controlled Trials) supplemented by a manual search. The electronic and manual search identified 1853 articles, of which 8 articles were selected for analysis. Out of a total of 3987 dental implants, 2036 were axial dental implants and 1951 tilted. Similar results were found in implant survival or overall implant success rates. Moreover, no statistically significant differences were found in MBL (p = 0.369; MD 0.116 mm (−0.137; 0.369) 95% CI) The prosthodontic/biological complications reported in the articles were very diverse and irregularly distributed. This systematic review suggests that there is no difference between tilted compared with straight dental implants in the medium-long term (>5 years). However, further research is needed to generate long-term data and confirm the present review’s findings.

scholarly journals Maxillary Overdentures Supported by Four Splinted Direct Metal Laser Sintering Implants: A 3-Year Prospective Clinical Study

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Francesco Mangano ◽  
Fabrizia Luongo ◽  
Jamil Awad Shibli ◽  
Sukumaran Anil ◽  
Carlo Mangano
Keyword(s):  
Bone Loss ◽  
Laser Sintering ◽  
Titanium Implants ◽  
Prospective Clinical Study ◽  
Implant Survival ◽  
Direct Metal Laser Sintering ◽  
Marginal Bone Loss ◽  
Bone Level ◽  
Bone To Implant Contact

Purpose. Nowadays, the advancements in direct metal laser sintering (DMLS) technology allow the fabrication of titanium dental implants. The aim of this study was to evaluate implant survival, complications, and peri-implant marginal bone loss of DMLS implants used to support bar-retained maxillary overdentures.Materials and Methods. Over a 2-year period, 120 implants were placed in the maxilla of 30 patients (18 males, 12 females) to support bar-retained maxillary overdentures (ODs). Each OD was supported by 4 implants splinted by a rigid cobalt-chrome bar. At each annual follow-up session, clinical and radiographic parameters were assessed. The outcome measures were implant failure, biological and prosthetic complications, and peri-implant marginal bone loss (distance between the implant shoulder and the first visible bone-to-implant contact, DIB).Results. The 3-year implant survival rate was 97.4% (implant-based) and 92.9% (patient-based). Three implants failed. The incidence of biological complication was 3.5% (implant-based) and 7.1% (patient-based). The incidence of prosthetic complication was 17.8% (patient-based). No detrimental effects on marginal bone level were evidenced.Conclusions. The use of 4 DMLS titanium implants to support bar-retained maxillary ODs seems to represent a safe and successful procedure. Long-term clinical studies on a larger sample of patients are needed to confirm these results.

Prevalence of Sinus Augmentation Associated With Maxillary Posterior Implants

2013 ◽  
Vol 39 (6) ◽  
pp. 680-688 ◽  
Author(s):  
Wook-Jin Seong ◽  
Michael Barczak ◽  
Jae Jung ◽  
Saonli Basu ◽  
Paul S Olin ◽  
...  
Keyword(s):  
Alveolar Bone ◽  
Primary Stability ◽  
Implant Failure ◽  
Sinus Augmentation ◽  
Implant Position ◽  
Institutional Review ◽  
Posterior Maxilla ◽  
American Society ◽  
Bone Height ◽  
Augmentation Procedure

Pneumatization of the maxillary sinus limits the quantity of alveolar bone available for implant placement and may result in a lack of primary stability and difficulty in achieving osseointegration. The purpose of this study was to retrospectively analyze a group of patients who had implants placed in the posterior maxilla, calculate the prevalence of sinus augmentation, and identify factors related to sinus augmentation. With institutional review board approval, dental records from a population of patients who had implants placed in the maxillary posterior region between January 2000 and December 2004 were used to create a database. Independent variables were classified as continuous (age of the patient at stage 1 implant surgery [S1], time between extraction and S1, time between extraction and sinus augmentation, and time between sinus augmentation and S1) and categorical (gender, implant failure, American Society of Anesthesiologists system classification, smoking, osteoporosis, residual crestal bone height, implant position, implant proximity, prostheses type, and implant diameter and length). The dependent variable was the incidence of a sinus augmentation procedure. Simple logistic regression was used to assess the influence of each factor on the presence of sinus augmentation (P &lt; .05). The final database included 502 maxillary posterior implants with an overall survival rate of 93.2% over a mean follow-up period of 35.7 months. Of 502 implants, 272 (54.2%) were associated with a sinus augmentation procedure. Among variables, residual crestal bone height (P &lt; .001), implant position (P &lt; .001), implant proximity (P &lt; .001), prosthesis type (P &lt; .001), implant failure (P &lt; .01), and implant diameter (P &lt; .01), were statistically associated with sinus augmentation. Within the limitations of this retrospective study, the results suggest that more than half (54.2%) of the maxillary posterior implants were involved with a sinus augmentation procedure. The prevalence of sinus augmentation increased with decreased residual crestal bone height, more posterior implant locations, and complete or partial edentulism. Sinus augmentation was significantly associated with implant failure and wide implants.

scholarly journals Morse Taper Connection Implants Placed in Grafted Sinuses in 65 Patients: A Retrospective Clinical Study with 10 Years of Follow-Up

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Francesco Mangano ◽  
Renata Bakaj ◽  
Irene Frezzato ◽  
Alberto Frezzato ◽  
Sergio Montini ◽  
...  
Keyword(s):  
Survival Rate ◽  
Complication Rates ◽  
Sinus Augmentation ◽  
Dental Clinics ◽  
Window Technique ◽  
Posterior Maxilla ◽  
Retrospective Clinical Study ◽  
Osteotomy Technique

Purpose. To investigate the 10-year survival and complication rates of Morse taper connection implants (MTCIs) placed in grafted sinuses. Methods. This study reports on patients treated with maxillary sinus augmentation (with the lateral window technique (LWT) or the transalveolar osteotomy technique (TOT)) and installed with MTCIs supporting fixed restorations (single crowns (SCs) and fixed partial dentures (FPDs)), in two dental clinics. The outcomes of the study were the 10-year implant survival and complication rates. Results. Sixty-five patients (30 males and 35 females) with a mean age of 62.7 (±10.2) years were installed with 142 MTCIs: 79 fixtures were inserted with the LWT and 63 were placed with the TOT. After ten years, five implants failed, for an overall survival rate of 96.5%. Three implants failed in the LWT group, for a survival rate of 96.3%; two implants failed in the TOT group, for a survival rate of 96.9%. The 10-year incidence of biologic complications was 11.9%. Prosthetic complications were all technical in nature and amounted to 7.6%. Conclusions. MTCIs seem to represent a successful procedure for the prosthetic restoration of the grafted posterior maxilla, in the long term. This study was registered in the ISRCTN registry with number ISRCTN30772506.

scholarly journals Histological and Histomorphometric Evaluation of New Bone Formation after Maxillary Sinus Augmentation with Two Different Osteoconductive Materials: A Randomized, Parallel, Double-Blind Clinical Trial

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5520
Author(s):  
Giuseppe Grasso ◽  
Stefano Mummolo ◽  
Sara Bernardi ◽  
Davide Pietropaoli ◽  
Giuseppe D’Ambrosio ◽  
...  
Keyword(s):  
Statistical Significance ◽  
Lateral Approach ◽  
Bovine Bone ◽  
New Bone Formation ◽  
Short Term ◽  
Sinus Augmentation ◽  
Double Blind ◽  
Double Blind Clinical Trial ◽  
Bone Biopsies

This study aimed to investigate the histological features of deproteinized equine bone mineral (DEBM) and anorganic bovine bone (ABB) after human sinus augmentation with the lateral approach. Twenty-three sinus augmentations were performed in 16 patients (male: 10/female: 6) using DEBM or ABB in a randomized fashion. Healing took place over the next 6 months. Bone core biopsies (N = 23) were obtained for each subject prior to placing the dental implants. The biopsies were processed for both histological descriptions and histomorphometric analysis. Statistical analyses were applied as appropriate, defining statistical significance as p < 0.05. Core bone biopsies revealed no differences in terms of newly formed bone between groups, or differences in terms of tissue inflammation. Both DEBM and ABB appear to be suitable biomaterials for bone augmentation in sinus lift surgery in the short term. However, dedicated studies are required to confirm these results and their stability in the long term.

scholarly journals Simultaneous Sinus Lifting and Alveolar Distraction of a Severely Atrophic Posterior Maxilla for Oral Rehabilitation with Dental Implants

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Takahiro Kanno ◽  
Masaharu Mitsugi ◽  
Jun-Young Paeng ◽  
Shintaro Sukegawa ◽  
Yoshihiko Furuki ◽  
...  
Keyword(s):  
Morphological Study ◽  
Histomorphometric Analysis ◽  
Implant Survival ◽  
Oral Rehabilitation ◽  
Osseointegrated Implants ◽  
Posterior Maxilla ◽  
Atrophic Maxilla ◽  
Significant Difference ◽  
Sinus Lifting

We retrospectively reviewed a new preimplantation regenerative augmentation technique for a severely atrophic posterior maxilla using sinus lifting with simultaneous alveolar distraction, together with long-term oral rehabilitation with implants. We also analyzed the regenerated bone histomorphologically. This study included 25 maxillary sinus sites in 17 patients. The technique consisted of alveolar osteotomy combined with simultaneous sinus lifting. After sufficient sinus lifting, a track-type vertical alveolar distractor was placed. Following a latent period, patient self-distraction was started. After the required augmentation was achieved, the distractor was left in place to allow consolidation. The distractor was then removed, and osseointegrated implants (average of 3.2 implants per sinus site, 80 implants) were placed. Bone for histomorphometric analysis was sampled from six patients and compared with samples collected after sinus lifting alone as controls (n=4). A sufficient alveolus was regenerated, and all patients achieved stable oral rehabilitation. The implant survival rate was 96.3% (77/80) after an average postloading followup of 47.5 months. Good bone regeneration was observed in a morphological study, with no significant difference in the rate of bone formation compared with control samples. This new regenerative technique could be a useful option for a severely atrophic maxilla requiring implant rehabilitation.

scholarly journals Smoking and Dental Implants: A Systematic Review and Meta-Analysis

Medicina ◽  
2021 ◽  
Vol 58 (1) ◽  
pp. 39
Author(s):  
Abir Dunia Mustapha ◽  
Zainab Salame ◽  
Bruno Ramos Chrcanovic
Keyword(s):  
Dental Implants ◽  
Meta Analysis ◽  
Statistical Significance ◽  
Implant Failure ◽  
Negative Consequences ◽  
Marginal Bone Loss ◽  
Manual Search ◽  
The Difference ◽  
Meta Analyses

Background and Objectives: Tobacco is today the single most preventable cause of death, being associated with countless diseases, including cancer and neurological, cardiovascular, and respiratory diseases. Smoking also brings negative consequences to oral health, potentially impairing treatment with dental implants. The present review aimed to evaluate the influence of smoking on dental implant failure rates and marginal bone loss (MBL). Materials and Methods: Electronic search was undertaken in three databases, plus a manual search of journals. Meta-analyses were performed, in addition to meta-regressions, in order to verify how the odds ratio (OR) and MBL were associated with follow-up time. Results: The review included 292 publications. Altogether, there were 35,511 and 114,597 implants placed in smokers and in non-smokers, respectively. Pairwise meta-analysis showed that implants in smokers had a higher failure risk in comparison with non-smokers (OR 2.402, p < 0.001). The difference in implant failure between the groups was statistically significant in the maxilla (OR 2.910, p < 0.001), as well as in the mandible (OR 2.866, p < 0.001). The MBL mean difference (MD) between the groups was 0.580 mm (p < 0.001). There was an estimated decrease of 0.001 in OR (p = 0.566) and increase of 0.004 mm (p = 0.279) in the MBL MD between groups for every additional month of follow-up, although without statistical significance. Therefore, there was no clear influence of the follow-up on the effect size (OR) and on MBL MD between groups. Conclusions: Implants placed in smokers present a 140.2% higher risk of failure than implants placed in non-smokers.

scholarly journals Immediate implant placement following tooth extraction with simultaneous lateral sinus augmentation: a retrospective clinical study after at least 1 year of loading

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Bok-Joo Kim ◽  
Chul-Hoon Kim ◽  
Jung-Han Kim
Keyword(s):  
Survival Rate ◽  
Tooth Extraction ◽  
Statistical Significance ◽  
Lateral Sinus ◽  
Sinus Augmentation ◽  
Implant Placement ◽  
Posterior Maxilla ◽  
Retrospective Clinical Study ◽  
Immediate Implant ◽  
Bone Height

Abstract Background Lateral sinus augmentation is necessary when the residual bone height is insufficient in the posterior maxilla. Immediate implant placement following tooth extraction with lateral sinus augmentation will shorten the number of operations and treatment time. Purpose To evaluate radiologic and clinical results for at least 1 year after loading in patients who underwent tooth extraction, implant placement, and lateral sinus augmentation at the same time. Materials and methods We retrospectively evaluated 35 implants placed in 25 patients. Preoperative and postoperative CBCT were compared and analyzed for residual bone height (RBH) and increased bone height (IBH), the initial torque value (ITV), and the implant stability quotient (ISQ). A comparative evaluation was performed between a 1-stage (non-submerged) group and a 2-stage (submerged) group. After loading for at least 1 year, clinical and radiological evaluations were performed to evaluate the survival rate. Results One of the 35 implants failed in osseointegration, and the remaining 34 showed successful results. The failure-free survival rate at 1 year was 97.06% (95% CI, 91.38-100.0%). The RBH ranged from 3.1 to 9.6 mm (mean, 5.62 ± 1.68 mm), and the IBH ranged from 3 to 15.3 mm (mean, 8.87 ± 2.74 mm). Among the RBH, ITV, ISQ, treatment period, final bone height, and failure evaluation by stage of implant placement, only ISQ showed statistical significance between the groups (p < .001). A comparison of RBH, ITV, and ISQ, regardless of group, showed that each value tended to increase, but there were no statistically significant differences. Conclusions Immediate implant placement following tooth extraction with simultaneous lateral sinus augmentation is considered reliable even though the procedures had been performed at the same time.

scholarly journals A New Trend in Recording Subgingival Tissue around an Implant While Making a Direct Abutment Impression

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Suryakant C. Deogade ◽  
Sneha S. Mantri ◽  
Gunjan Dube ◽  
Radhika Shrivastava ◽  
Syed Noorani
Keyword(s):  
Bone Loss ◽  
Fatigue Fracture ◽  
Implant Failure ◽  
Uneven Distribution ◽  
Marginal Bone Loss ◽  
Long Term Outcomes ◽  
Osseointegrated Implants ◽  
Alternative Choice ◽  
Easy Solution

A successful implant-supported restoration must provide adequate function and esthetics. Osseointegrated implants have given an alternative choice for patients who have lost their teeth. Most commonly encountered problems while doing a transfer from patient to the master cast in restoring implant-supported crowns are an uneven distribution of occlusal loads and undue torquing forces on the various elements of implant. This is caused due to poor fit of frameworks connected to implant, which further leads to marginal bone loss, loosening of screws, fatigue fracture of implant components, and ultimately implant failure. This paper presents a simplified and easy solution to overcome such problems by introducing an innovative gingival retraction system for restoring implant-supported crowns to achieve superior and predictable long-term outcomes.

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