scholarly journals A prospective clinical study on implant impression accuracy

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Motaz Osman ◽  
Hassan Ziada ◽  
Ahmed Suliman ◽  
Neamat Hassan Abubakr
Keyword(s):  
Clinical Study ◽  
Dental Implants ◽  
Prospective Clinical Study ◽  
Impression Accuracy ◽  
Edentulous Patients ◽  
Implant System

Abstract Background An accurate impression is crucial to the long-term success of dental implants. This investigation evaluated the accuracy of the open and closed implant impression techniques in partially edentulous patients who received two adjacent implants. Material and methods Forty patients received Osstem Implants (Osstem Implant System, Seoul, Korea). Two impressions were made for each patient, one using an open tray and a second with a closed tray technique. The horizontal distances between two impression copings were measured and compared to similar measurements on the master casts. Also, under a stereomicroscope (AmScop14370, Myford Road, #150, Irvine, CA 92606 USA) at a 50-fold magnification, the presence or absence of the marginal discrepancies was evaluated. Results There were no statistically significant differences regarding horizontal measurements and in the marginal relationship for the two impression techniques, except between the anterior and posterior regions, for the closed tray technique. There were also no statistically significant differences in the impression accuracy between maxillary and the mandibular arches. In addition, there were no statistically significant differences for the intraoral horizontal distances, compared to similar horizontal measurements on master casts, between the open and closed tray techniques. Conclusions Within the limitations of the present study, there were generally no differences in the impression accuracy between the open and closed tray techniques in partially edentulous patients with two adjacent implants.

scholarly journals Risk Assessment in Long-term Survival Rates of Dental Implants: A Prospective Clinical Study

2018 ◽  
Vol 19 (5) ◽  
pp. 587-590 ◽  
Author(s):  
Rizwan Mokashi ◽  
Punkit S Sudan ◽  
Anand M Dharamsi ◽  
Rinkee Mohanty ◽  
Archana L Misurya ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Clinical Study ◽  
Dental Implants ◽  
Survival Rates ◽  
Prospective Clinical Study ◽  
Term Survival ◽  
Long Term Survival

scholarly journals A prospective clinical study to evaluate the performance of zirconium dioxide dental implants in single-tooth edentulous area: 3-year follow-up

2018 ◽  
Vol 18 (1) ◽  
Author(s):  
Kai-Hendrik Bormann ◽  
Nils-Claudius Gellrich ◽  
Heinz Kniha ◽  
Sabine Schild ◽  
Dieter Weingart ◽  
...  
Keyword(s):  
Clinical Study ◽  
Dental Implants ◽  
Zirconium Dioxide ◽  
Prospective Clinical Study ◽  
Single Tooth

Clinical and Patient-Related Outcomes of a Tapered Implant System With Switched Platform Conical Abutments: A Private Practice Field Trial

2018 ◽  
Vol 44 (5) ◽  
pp. 326-329
Author(s):  
Jacob Horwitz ◽  
Eli E. Machtei ◽  
Shai Frankental ◽  
Eran Gabay ◽  
Yaniv Mayer ◽  
...  
Keyword(s):  
Dental Implants ◽  
Field Trial ◽  
Subjective Evaluation ◽  
Success Rates ◽  
Pocket Depth ◽  
Probing Pocket Depth ◽  
Satisfaction Evaluation ◽  
Edentulous Patients ◽  
Standard Implant ◽  
Implant System

The aim of this prospective cohort observational field trial was to examine 1-year survival and success rates of a recently introduced tapered implant system with switched platform conical abutments and to evaluate patient related outcomes of therapy. Partially edentulous patients aged between 18 and 75 years, with available bone height for dental implants ≥10 mm desiring to restore the missing tooth/teeth with implant supported restoration, were recruited by 7 periodontists in their respective private practices. Dental implants were installed according to standard implant therapy protocol. Three to 6 months postoperatively, after evaluating interim implant success, implants were restored by the referring dentists. Patient, Ramfjord teeth, and implant data, including baseline and 1-year postoperative, were collected. A total of 60 patients were recruited and received 117 implants. Complete 1-year clinical and radiographic data were available for 83 and 65 implants, respectively. Two implants failed during the first year, resulting in a 1-year survival rate of 98.3%. Mean implant probing pocket depth was 2.29 ± 0.84 mm. Mean radiographic bone distance from implant's shoulder at the mesial and distal sites at 1 year was 0.66 ± 0.5 and 0.79 ± 0.64mm, respectively, resulting in a success rate of 95.4%. Patient subjective evaluation of therapy exhibited a median pain experience of 1 and median esthetics, function, and general satisfaction evaluation of 10 on a scale of 1 to 10. The tapered conical connection dental implant system, used in private dental practices, shows good 1-year survival and success rates that are similar to other implant systems on the market.

scholarly journals Full in-Office Guided Surgery with Open Selective Tooth-Supported Templates: A Prospective Clinical Study on 20 Patients

2018 ◽  
Vol 15 (11) ◽  
pp. 2361 ◽  
Author(s):  
Francesco Mangano ◽  
Uli Hauschild ◽  
Oleg Admakin
Keyword(s):  
Clinical Study ◽  
Low Cost ◽  
Prospective Clinical Study ◽  
3D Printer ◽  
Guided Surgery ◽  
Operative Complications ◽  
Edentulous Patients ◽  
One Year ◽  
Single Crowns ◽  
Surgical Templates

Background: Guided implant surgery appears to have several benefits, such as the possibility of inserting flapless implants in a prosthetically driven manner, avoiding dangerous anatomical structures. However, to date, only a few surgeons routinely use guided surgery in partially edentulous patients. Aim: To present the results obtained with tooth-supported surgical templates characterized by an innovative open design with selective support, and manufactured via a full in-office procedure with a low-cost desktop 3D printer. Methods: Over a two-year period (2016–2018), all partially edentulous patients with one to three missing teeth (in maxilla and/or mandible), referred to a private dental practice for restoration with dental implants, were considered for inclusion in this prospective clinical study. An intraoral scanner (CS 3600®, Carestream Dental) and cone beam computed tomography (CS 9300®, Carestream Dental) were used to acquire the 3D information on the patients. Guided surgery software (SMOP®, Swissmeda) was used to plan the surgeries and to design open, selective, tooth-supported templates that were fabricated with a stereolithographic (SLA) desktop 3D printer (XFAB2000®, DWS). Guided implant surgeries were performed and patients were followed for a period of one year. The study outcomes were fit and stability of surgical templates, duration (time) of surgery, intra and post-operative complications, and implant stability and survival. Results: Twenty (20) partially edentulous patients (9 males, 11 females; mean age 54.4 ± 9.4 years) were included in the study; 28 open, selective, tooth-supported templates were designed with the aim of inserting 38 implants. Among the surgical templates, 24 had optimal fit and stability, three had optimal fit and sufficient stability, and only one had inadequate fit and unsatisfactory stability and was therefore not suitable for clinical use. The average time of the intervention was 15.7 ± 5.2 min per template. No intra-operative complications were reported, but one implant was not stable at placement and had to be removed. In total, 36 implants were restored with 10 two-unit fixed partial prostheses and 16 single crowns. All implants were successfully functioning at one year, even if, in two single crowns, minor prosthetic complications (abutment screw loosening) occurred. Conclusions: Full in-office guided surgery with open, selective, tooth-supported templates seem to represent a clinically predictable surgical procedure to restore partially edentulous patients. Further studies are needed to confirm these positive outcomes.

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