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.

scholarly journals From Guided Surgery to Final Prosthesis with a Fully Digital Procedure: A Prospective Clinical Study on 15 Partially Edentulous Patients

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Giorgio Andrea Dolcini ◽  
Marco Colombo ◽  
Carlo Mangano
Keyword(s):  
Zirconia Ceramic ◽  
Prospective Clinical Study ◽  
Guided Surgery ◽  
Implant Placement ◽  
Posterior Maxilla ◽  
Digital Planning ◽  
3D Printed ◽  
Optical Impression ◽  
Edentulous Patients ◽  
Surgical Templates

Scope.To demonstrate guided implant placement and the application of fixed, implant-supported prosthetic restorations with a fully digital workflow.Methods.Over a 2-year period, all patients with partial edentulism of the posterior maxilla, in need of fixed implant-supported prostheses, were considered for inclusion in this study. The protocol required intraoral scanning and cone beam computed tomography (CBCT), the superimposition of dental-gingival information on bone anatomy, surgical planning, 3D-printed teeth-supported surgical templates, and modelling and milling of polymethylmethacrylate (PMMA) temporaries for immediate loading. After 3 months, final optical impression was taken and milled zirconia frameworks and 3D-printed models were fabricated. The frameworks were veneered with ceramic and delivered to the patients.Results.Fifteen patients were selected for this study. The surgical templates were stable. Thirty implants were placed (BTK Safe®, BTK, Vicenza, Italy) and immediately loaded with PMMA temporaries. After 3 months, the temporaries were replaced by the final restorations in zirconia-ceramic, fabricated with a fully digital process. At 6 months, none of the patients reported any biological or functional problems with the implant-supported prostheses.Conclusions.The present procedure for fully digital planning of implants and short-span fixed implant-supported restorations has been shown to be reliable. Further studies are needed to validate these results.

scholarly journals Effectiveness of a Selective Etching Technique in Reducing White Spots Formation around Lingual Brackets: A Prospective Cohort Clinical Study

Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 572
Author(s):  
Domenico Dalessandri ◽  
Marino Bindi ◽  
Francesca Massetti ◽  
Gaetano Isola ◽  
Marco Migliorati ◽  
...  
Keyword(s):  
Clinical Study ◽  
Difficulty Level ◽  
Prospective Clinical Study ◽  
White Spot Lesions ◽  
Etching Technique ◽  
White Spots ◽  
Accumulation Index ◽  
One Year ◽  
Lingual Brackets ◽  
And Control

The risk of developing white spot lesions (WSLs) after orthodontic treatment with lingual brackets is generally considered lower than with labial ones, even if plaque accumulation is frequently higher due to the increased difficulty level in oral hygiene maintenance. In this prospective clinical study, selective enamel etching technique effectiveness in reducing plaque accumulation and WSLs was tested. Thirty patients were bonded with a split-mouth approach: two randomly selected opposite quadrants were used as the test sides, using customized plastic etching guides, and the other two as control sides, applying traditional direct etching methods. The plaque presence around the braces was recorded after 1, 3, 6, and 12 months according to a lingual plaque accumulation index (LPAI), as was the presence of WSLs. PAI measured values were significantly higher in the control sides during the observation period. Test and control sides differed significantly for new WSL onset only after 12 months of treatment. Therefore, the present research demonstrated that this guided enamel etching technique allowed for significant reduction in plaque accumulation around the lingual brackets and reduced onset of white spots after one year of treatment.

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 Radiographic Evaluation of Crestal Bone Loss Around Dental Implants in Maxilla and Mandible: One Year Prospective Clinical Study

2015 ◽  
Vol 49 (2) ◽  
pp. 128-136 ◽  
Author(s):  
Muhamed Ajanović ◽  
Adis Hamzić ◽  
Sead Redžepagić ◽  
Alma Kamber-Ćesir ◽  
Lejla Kazazić ◽  
...  
Keyword(s):  
Clinical Study ◽  
Bone Loss ◽  
Dental Implants ◽  
Radiographic Evaluation ◽  
Prospective Clinical Study ◽  
Crestal Bone Loss ◽  
One Year ◽  
Maxilla And Mandible

scholarly journals Management of syndactyly: a clinical study

2019 ◽  
Vol 6 (8) ◽  
pp. 2806
Author(s):  
Nagaprasad Nangineedi ◽  
Gangavaram Praveen Harish ◽  
Mohammed Rafi
Keyword(s):  
Clinical Study ◽  
Treatment Strategies ◽  
Prospective Clinical Study ◽  
Basic Principles ◽  
Operative Complications ◽  
Web Space ◽  
Almost All ◽  
Surgical Corrections ◽  
The Web

Background: Syndactyly is a congenital anomaly, basic principles of surgical release of syndactyly have been well established, each patient requires a thorough assessment of the soft-tissue and bony components in the syndactylized region. Reconstruction must be planned carefully when more than two digits are involved or when the syndactyly is a component of a systemic congenital syndrome. The aim of the treatment strategies for syndactyly is to separate the fused digits, create a functional hand, and produce an aesthetically acceptable web.Methods: The prospective clinical study is conducted in the Department of Plastic & Reconstructive surgery, between October 2016 to October 2018. Twenty six patients with congenital syndactyly and post burn syndactyly of fingers were included in this study.Results: There were no intra operative complications and no cases had any neurovascular compromise. Integrity of Dorsal and volar flaps, quality of scars, aesthetical aspects of fingers are reasonably good in almost all the cases that are operated in this study. Overall 97% of patients treated achieved good function and superior results following single surgery.Conclusions: Primary syndactyly is more common than secondary syndactyly. In this study the primary goal is separation of fused digits/toes and covering the web space with dorsal flap, and covering the separated digits/ toes with a graft and create a functional hand and produce an aesthetically web with fewest complications and fewest surgical corrections. 

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