A. Alsourori, M. Mostafa, A. Kaddah, A. Fayyad, A. Adl, M. Swedan
{"title":"Impact of single implant versus two-implant mandibular retained overdentures on retention and success rate in totally edentulous patients. A Randomized Controlled Clinical Trial","authors":"A. Alsourori, M. Mostafa, A. Kaddah, A. Fayyad, A. Adl, M. Swedan","doi":"10.23805/JO.2018.10.03.03","DOIUrl":"https://doi.org/10.23805/JO.2018.10.03.03","url":null,"abstract":"Aim Purpose of this RCT was to evaluate the denture retention and success rate of totally edentulous patients in single median versus two inter-foraminal implant-supported mandibular over-dentures on.Material and methods Twenty-four totally edentulous patients were selected in this trial. The eligible patients were allocated randomly into two equivalent groups of 12 participants each. A single-implant (G I) or two inter-foraminal implants (GII) were located in the mandible. Three months later, pick up of the locator attachment wa performed to all implants and denture bases. Assessments of denture retention and success rate of implants were measured at the three, six, and twelve month's follow-up assessments. The study consists of twenty-four totally edentulous patients (14 males and 9 females) with age range of 59.6 years. Thirty six implants were inserted (12 in single-implant and 24 in the two inter-foraminal implants). All patients accomplished the twelve months period of follow-up.Results Regarding denture retention, the two inter-foraminal implant group (GII) showed statistically significant differences compared to the single-implant group (GI). Concerning success criteria of implants the results revealed insignificant differences between patients in both groups.Conclusion Single-implant mandibular over-dentures may be recommended as an alternate treatment option for the management of edentulous patients in populations with low economic status.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":"6 1","pages":"79-86"},"PeriodicalIF":0.4,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86557036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elisa Ciarmatori, A. Passaretti, G. Miracolo, A. Cicconetti
{"title":"Critical review of literature on the use of short implants","authors":"Elisa Ciarmatori, A. Passaretti, G. Miracolo, A. Cicconetti","doi":"10.23805/JO.2018.10.03.04","DOIUrl":"https://doi.org/10.23805/JO.2018.10.03.04","url":null,"abstract":"Aim The aims of this review were to verify the validity of short implants as a treatment option in patients with partial or total edentulism, having more or less atrophic jawbones.Methods A systematic review of randomized controlled trials (RCT) was conducted, involving also prospective and retrospective studies published in English language between January 2005 and December 2015. The PubMed and Scopus databases were electronically analyzed. Titles and abstracts were selected, and full texts were evaluated. The data were organized in tables and then presented as a narrative analysis.Results The electronic search provided 891 publications, 50 articles were retrieved in full text and only 11 were included in the review. Although the performance of the implants was evaluated through different success and survival criteria, short implants have shown to have a similar performance to longer implants.Conclusions Short implants could be considered as a treatment option comparable to traditional lenght implant. However, other studies must be conducted to assess uniform criteria to state the quality of treatment.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":"8 1","pages":"87-94"},"PeriodicalIF":0.4,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89776733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
O. Gahona, X. Granic, C. Antúnez, S. Domancic, V. Díaz-Narváez, R. Utsman
{"title":"Insertion torque and resonance frequency analysis (ISQ) as predictor methods of implant osseointegration","authors":"O. Gahona, X. Granic, C. Antúnez, S. Domancic, V. Díaz-Narváez, R. Utsman","doi":"10.23805/JO.2018.10.03.06","DOIUrl":"https://doi.org/10.23805/JO.2018.10.03.06","url":null,"abstract":"Aim Determining appropriate primary stability at time of implant placement is a key therapeutic decision. The aim of the study was to compare insertion torque and implant stability quotient (ISQ) obtained at the time of implant placement, as predictors of osseointegration.Methods There were 31 implants evaluated in the maxilla and 29 in the mandible. A “High Torque Indicating Ratchet Wrench” was used for the measurement of insertion torque and a “Osstell Mentor®” to register the ISQ value at the end of each surgery. At 6 weeks counter-torque was performed on each implant using a “Low Torque Indicating Ratchet Wrench” applying 20 to 32 Ncm. Successful osseointegration was appropriately obtained with torque insertion of 35 or more and an ISQ of 60 or more without mobility, as well as torque insertion less than 35 and an ISQ less than 60 with mobility. The results, contrary to those described above, were considered to be failure. The use of ROC (Receiver Operating Characteristic) curves establishes differences between the two methods. Contingency tables and Kappa statistics were used to analyze the coincidence results between methods. Insertion torque was used as the Gold Standard. The significance level used is α≤0.05.Results In the ROC curve analysis, the area of value was 0.611 (p> 0.05). The Kappa statistic value was 0.208 (p> 0.05) and there are no discrepancies between success and failure between the two methods compared.Conclusion Both methods tend to have the same results in relation to the studied variables.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":"43 1","pages":"103-107"},"PeriodicalIF":0.4,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89467879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F. Mandelli, E. Gherlone, A. Keeling, G. Gastaldi, M. Ferrari
{"title":"Full-arch intraoral scanning: comparison of two different strategies and their accuracy outcomes","authors":"F. Mandelli, E. Gherlone, A. Keeling, G. Gastaldi, M. Ferrari","doi":"10.23805/JO.2018.10.03.01","DOIUrl":"https://doi.org/10.23805/JO.2018.10.03.01","url":null,"abstract":"Aim To test if there is a difference in accuracy between full-arch scans performed as two separate halves and stitched together, or as one continuous scan from side to side.\u0000\u0000Materials and Methods A reference model with six implants was milled as a single titanium block. Six scan bodies were manufactured and screwed into the implants. A reference 3D model was created using an industrial optical scanner. The experiment was performed using the same intraoral scanning machine (3M True Definition Scanner). The ‘Stitching’ strategy had the scan started from #27 to #13;after saving this part, the same procedure was performed from #17 to #23 and the software stitched the two halves automatically. The ‘No Stitching’ strategy had the scan performed as a single procedure. Using engineering software, six copies of the scan body CAD file were substituted to the six scan bodies of the RM and the centre point of each one was determined. Linear measurements were made between the detected points; mean distance and standard deviation were calculated for each of the fifteen measurement sets created.\u0000\u0000Results Stitching and No Stitching did not show statistically significant differences (Stitching=0.0396 mm ±0.0409 mm, No Stitching=0.0452 mm ±0,0481 mm, p=.338) but they differed significantly comparing absolute errors (Stitching=0.0442 mm ±0.0358 mm, No Stitching=0.0555 mm±0,036 mm, p=.015).\u0000\u0000Conclusions Stitching showed a better precision compared to No Stitching, exhibiting a smaller standard deviation and a higher error density closer to zero.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":"35 1","pages":"65-74"},"PeriodicalIF":0.4,"publicationDate":"2018-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87873419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Penha, S. Groisman, J. Ng, O. Gonçalves, M. Kunrath
{"title":"Physical-chemical analyses of contaminations and internal holes in dental implants of pure commercial titanium","authors":"N. Penha, S. Groisman, J. Ng, O. Gonçalves, M. Kunrath","doi":"10.23805/JO.2018.10.02.05","DOIUrl":"https://doi.org/10.23805/JO.2018.10.02.05","url":null,"abstract":"Background: Titanium implants are one of the main forms of tooth recovery in today's dentistry. Its form of packaging, quality control and properties vary greatly by the large number of companies. The objective of this study was to analyze four different commercial brands in their stage of sale for clinical use, according to their physicochemical properties in comparison to the international ASTM (American Society for Testing and Materials) standards. \u0000Materials and Methods: Twelve implants were used and samples were prepared for analysis at SEM (scanning electron microscopy) and EDS (energy dispersive x-ray detector). \u0000Results: The results showed impurities and contaminations in most samples as well as different amounts of holes within the physical structure of the implants, in threads, body and apex. \u0000Conclusions: The contaminations and holes found suggest some quality control failure at some stage of implant production, this failure can compromise both implant resistance and its purity rating.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":"6 1","pages":"57-63"},"PeriodicalIF":0.4,"publicationDate":"2018-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73158334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Chairside protocol for posterior single-unit implant restorations in a complete digital workflow","authors":"T. Joda, M. Ferrari","doi":"10.23805/JO.2018.10.02.01","DOIUrl":"https://doi.org/10.23805/JO.2018.10.02.01","url":null,"abstract":"Aim: Introduction of a step-wise sequence for chairside treatment with a posterior single-unit implant restoration in a complete digital workflow. \u0000Materials and Methods: The case report describes the surgical and prosthodontic workflows for the rehabilitation with an implant crown using Computer-Assisted Implant Dentistry (CAID): starting with digital data acquisition and virtual treatment planning, followed by guided implant placement including digital impression-taking, and finally CAD/CAM-processing and -production of the implant crown. \u0000Results: The entire treatment protocol plus technical work steps are integrated in a validated seamless process using original-to-original implant components for in-house production. \u0000Conclusions: Surgical and prosthodontic protocols for the treatment with monolithic implant crowns using CAID in a complete digital workflow without any physical models have to be considered in place of conventional manufacturing.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":"78 1-2 1","pages":"33-36"},"PeriodicalIF":0.4,"publicationDate":"2018-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78214179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. P. Sant'ana, V. T. Stuani, C. Damante, M. S. Ragghianti-Zangrando, S. L. Greghi, M. L. Rezende, E. Passanezi
{"title":"Inter-occlusal appliance for implant site augmentation and optimal implant positioning: a ten-year follow-up case report","authors":"A. P. Sant'ana, V. T. Stuani, C. Damante, M. S. Ragghianti-Zangrando, S. L. Greghi, M. L. Rezende, E. Passanezi","doi":"10.23805/jo.2018.10.02.02","DOIUrl":"https://doi.org/10.23805/jo.2018.10.02.02","url":null,"abstract":"Aim: Orthodontic implant site augmentation was proposed for exodontia of a hopeless tooth to improve bone architecture before implant installation. However, the use of orthodontic appliances to perform slow vertical movements and tooth extraction demands an interdisciplinary approach, increasing time and costs. The aim of this study is to present a technique of orthodontic implant site augmentation by the use of an inter-occlusal appliance. \u0000Case report: A 48-year-old patient presented cervical external resorption and root fracture at the upper left central incisor. A slow orthodontic extraction of the tooth was performed by the use of an inter-occlusal appliance. After extrusion, the tooth was extracted and the implant was immediately placed. Tooth was extruded 6 mm in 8 months, at a slow rate of extrusion (0.75 mm/month) along the tooth long axis, resulting in the formation of new bone at the apex and alveolar crest, leveling its height with neighboring teeth. \u0000Results: An increase in keratinized gingiva was observed. Final restoration was installed one year later, with adequate subgingival contour. No complications were observed after 10 years of follow-up. \u0000Conclusions: The use of an inter-occlusal appliance provided a simple method for orthodontic extraction and implant site development, allowing optimal implant positioning with no surgical augmentation procedures.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":"94 1","pages":"37-43"},"PeriodicalIF":0.4,"publicationDate":"2018-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83890328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Sorrentino, Y. Nagasawa, M. Infelise, G. Bonadeo, M. Ferrari
{"title":"In vitro analysis of the fracture resistance of CAD-CAM monolithic lithium disilicate molar crowns with different occlusal thickness","authors":"R. Sorrentino, Y. Nagasawa, M. Infelise, G. Bonadeo, M. Ferrari","doi":"10.23805/JO.2018.10.02.04","DOIUrl":"https://doi.org/10.23805/JO.2018.10.02.04","url":null,"abstract":"Aim: To compare the fracture resistance and mode of failure of CAD-CAM monolithic lithium disilicate crowns with different occlusal thickness. \u0000Materials and methods: Thirty CAD-CAM monolithic lithium disilicate crowns with different occlusal thickness were randomly distributed into 3 experimental groups: 0.5 mm (group 1), 1.0 mm (group 2) and 1.5 mm (group 3). The restorations were cemented onto human molars with a self-adhesive resin cement. The specimens were loaded until fracture; the fracture resistance and mode of failure were recorded. The data were statistically analyzed with the one-way ANOVA followed by the Fisher’s Exact test with Bonferroni’s correction (p=0.05). \u0000Results: The fracture resistance values of all the specimens exceeded the maximum physiological occlusal loads in molar regions. The highest fracture resistance was noticed in 1.0 mm-thick crowns. Ultrathin restorations (group 1) proved to be statistically less resistant to fracture than those of the other experimental groups (p<0.05). The crowns were mainly interested by unrestorable fractures. \u0000Conclusions: The occlusal thickness of CAD-CAM monolithic lithium disilicate crowns influences either the fracture resistance and the mode of failure of the restorations; the occlusal thickness of such restorations can be reduced up to a lower bound of 1.0 mm in order to keep sufficient strength to withstand occlusal loads; CAD-CAM monolithic lithium disilicate crowns showed sufficient fracture resistance to be used in molar regions but not in an ultrathin configuration (0.5 mm).","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":"66 1","pages":"50-56"},"PeriodicalIF":0.4,"publicationDate":"2018-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89325256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. M. Burgoa-la-Forcada, C. Rezende, C. Gonzaga, J. Zielak, A. Furuse
{"title":"Photoelastic analysis of dynamic stress distribution around short implants restored with different materials","authors":"S. M. Burgoa-la-Forcada, C. Rezende, C. Gonzaga, J. Zielak, A. Furuse","doi":"10.23805/JO.2018.10.02.03","DOIUrl":"https://doi.org/10.23805/JO.2018.10.02.03","url":null,"abstract":"Aim: This study aimed at evaluating the stress distribution around a locking tapered short dental implant (4.3 mm x 6 mm), comparing crowns made of metal (CoCr), zirconium (Y-TZP) and acrylic resin. \u0000Materials and Methods: The Y-TZP and resin crowns were fabricated by CAD/CAM system, while the CoCr crown was fabricated from lost wax technique. The implant was placed in a rigid photoelastic resin in order to analyze the stress distribution using a polariscope. An axial load starting at 0 (N) up to 200 (N) was applied at the center of the occlusal aspect of the crowns. The photoelastic models and the computer screen (where the data was exhibited) were recorded by video and the images were analyzed and compared at 50N, 100N, 150N and 200N loads. \u0000Results: It was observed that resin crown model generated lower stress around the implant. \u0000Conclusion: Resin crown generated best stress distribution around locking tapered short implant in comparison with Y-TZP and CoCr crowns.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":"45 1","pages":"44-49"},"PeriodicalIF":0.4,"publicationDate":"2018-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87135977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Gastaldi, E. Gherlone, M. Manacorda, F. Ferrini, F. Bova, R. Vinci, F. Cattoni
{"title":"A 3-D CAD/CAM technique in full-arch implant supported rehabilitations: the Virtual Implant-Prosthetic Procedure (VIPP Technique). A prospective longitudinal study","authors":"G. Gastaldi, E. Gherlone, M. Manacorda, F. Ferrini, F. Bova, R. Vinci, F. Cattoni","doi":"10.23805/JO.2018.10.01.01","DOIUrl":"https://doi.org/10.23805/JO.2018.10.01.01","url":null,"abstract":"ABSTRACT \u0000 \u0000Aim The purpose of this study is to evaluate the success of a new three-dimensional CAD/CAM processing technique in full-arch implant supported rehabilitations of edentulous patients. \u0000Materials and methods Healthy patients with edentulous mandible and/or maxilla arch were selected for the present study. The Full-Arch Implant Supported Virtual Protocol has been applied with immediate loading fixed rehabilitation. Effectiveness of digital and surgical planning, marginal bone loss, implant and prosthetic failure were recorded at 6-and 12 months follow up. \u0000Results Seventy-six implants were placed in 15 patients, and 15 full arch rehabilitations were delivered. Patients found smile design previsualization very effective (93%), guided surgery very effective (94%), and immediate loading and temporization very effective (92%). No implant were lost (survival rate = 100%). At the 6-months radiographic evaluation, average perimplant crestal bone loss was 0.56 ± 0.12 mm for maxillary implants (n = 64 ), 0.59 ± 0.16 for mandibular implants (n = 12 ) and 12-months average perimplant crestal bone loss was 0.67 ± 0.11 mm for maxillary implants (n = 64 ) and 0.69 ± 0.16 for mandibular implants (n = 12 ). Two unscrewing episodes and one provisional prosthesis fracture occurred. No paresthesia and no prosthetic complications in definitive prostheses were registered in the whole sample. \u0000Conclusions Within the limitations of the present study, the Virtual Implant-Prosthetic Procedure could be a satisfactory treatment in edentulous patients.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":"144 1","pages":"2-10"},"PeriodicalIF":0.4,"publicationDate":"2018-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88572051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}