scholarly journals CLINICALLY EVALUATED ACCURACY OF SINGLE GUIDED IMPLANTATIONS WITH TWO DIFFERENT SYSTEMS – PRELIMINARY RESULTS

2021 ◽  
Vol 2 ◽  
pp. 178-183
Author(s):  
Angelina Vlahova ◽  
Stefan Zlatev ◽  
Boyan Pavlov ◽  
Ivan Chenchev ◽  
Viktor Hadzhigaev
Keyword(s):  
Preliminary Analysis ◽  
Immediate Loading ◽  
Computer Assisted ◽  
Treatment Results ◽  
Preliminary Results ◽  
Implant Placement ◽  
Surgical Guides ◽  
Tissue Space ◽  
Single Implant

Introduction: Guided single implant placement ensures an optimal implant position, enables in-surgery immediate loading, and creates a predisposition for predictable treatment results. Aim: This article aims to present the surgical and loading protocols and assess the accuracy of two guided implant systems. Materials and methods: Ten patients missing a single molar were included. The semi-guided procedures with the two implant systems – AB Dental and Alpha Bio-Tec, were randomly assigned to each participant. The computer-assisted planning was performed with Implant Studio (3Shape, Denmark). Surgical guides and long-term, temporary, screw-retained restorations were virtually generated within the 3Shape system. Surgical appliances were printed from SG resin (Formlabs, USA), and crowns were milled from Telio CAD (Ivoclar Vivadent, Lichtenstein). Planning accuracy was evaluated based on the crown’s fit and relation to the adjacent teeth and antagonists. Results and discussion: The patients included for preliminary analysis (6 female and 4 male) were with a mean age of 33.42. The youngest was 24, and the oldest 49 years old. There were no surgical and technical complications for the period of evaluation, which ranged from 1 to 3 months. The crown’s fit was excellent in 8 cases. In two cases, minor adjustments were necessary – 1 in relation to the antagonists and 1 to the adjacent teeth. In one case, a healing screw was placed for 48 hours to facilitate adequate soft-tissue space for the Ti-base.  Conclusion: The preliminary results presented in this report suggest that the clinical and laboratory protocols used for guided implantation and immediate loading are highly efficient.

scholarly journals Accuracy of Customized Prefabricated Screw-Type Immediate Provisional Restorations after Single-Implant Placement

2019 ◽  
Vol 8 (4) ◽  
pp. 490 ◽  
Author(s):  
Kyung Chul Oh ◽  
Jee-Hwan Kim ◽  
Chang-Woo Woo ◽  
Hong Seok Moon
Keyword(s):  
Computer Aided Design ◽  
Computer Assisted ◽  
Angular Deviation ◽  
Intraoral Scanner ◽  
Planning Stage ◽  
Implant Placement ◽  
Surgical Guides ◽  
Planning Software ◽  
Single Implant

Limited evidence is available comparing the differences between pre-operative and post-operative 3D implant positions from the viewpoint of prosthetics. We aimed to investigate the differences between preplanned positions of virtual provisional restorations and their actual positions following fully guided single-implant placement. Ten maxillary typodonts with missing right central incisors were imaged using cone-beam computed tomography, and digital impressions were obtained using an intraoral scanner. These data were imported into implant-planning software, following which the provisional restorations were designed. After data superimposition, an appropriate implant position was determined, and a computer-assisted implant surgical guide was designed for each typodont. Orders generated from the implant-planning software were imported into relevant computer-aided design software to design the custom abutments. The abutments, provisional restorations, and surgical guides were fabricated, and each restoration was cemented to the corresponding abutments, generating a screw-type immediate provisional restoration. The implants were placed using the surgical guides, and the screw-type provisional restorations were engaged to the implants. The typodonts were then rescanned using the intraoral scanner. The restorations designed at the treatment planning stage were compared with those in the post-operative scan using metrology software. The angular deviation around the central axis of the implant was measured, and the differences in the crown position were converted to root mean square (RMS) values. The post-operative provisional restorations exhibited an absolute angular deviation of 6.94 ± 5.78° and an RMS value of 85.8 ± 20.2 µm when compared with their positions in the pre-operative stage. Within the limitations of the present in vitro study, the results highlight the potential application of customized prefabricated immediate provisional restorations after single-implant placement.

scholarly journals Computer-assisted implant placement and full-arch immediate loading with digitally prefabricated provisional prostheses without cast: a prospective pilot cohort study

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Nikolay Makarov ◽  
Giorgio Pompa ◽  
Piero Papi
Keyword(s):  
Dental Implants ◽  
Immediate Loading ◽  
Computer Assisted ◽  
Routine Practice ◽  
Marginal Bone Loss ◽  
Implant Placement ◽  
Surgical Guides ◽  
Edentulous Patients ◽  
Distal Support ◽  
Prosthetic Complications

Abstract Background Immediate loading of implant-supported full-arch rehabilitations has become routine practice when treating edentulous patients. The combination of static computer-aided implant surgery (s-CAIS) and digital prosthetic workflow could eliminate several treatment steps and facilitate prostheses delivery. The aim of this study is to evaluate the 1-year results of digitally prefabricated polymethyl methacrylate (PMMA) provisional prostheses without a cast for full-arch computer-assisted immediate loading. Materials and methods A digital pre-operative treatment planning was realized for all patients: dental implants and screw-retained abutments were selected in the planning software and two surgical templates were fabricated for each patient. The first template was mucosa or teeth-supported to drill the holes for fixating pins, while the second template was placed after raising a full-thickness flap and was supported by pins as well as soft or hard tissue distal support. Furthermore, based on the surgical planning, interim prostheses were digitally designed and milled of PMMA resin blocks with subsequent pink resin veneering. Osteotomies and implant placement were performed through the surgical guides and all implants were immediately loaded with prefabricated full-arch interim prostheses directly connected to titanium copings with a flowable resin. Results A total of 55 dental implants were placed in ten patients. In all cases, interim prostheses allowed the insertion of titanium copings without the need of access hole enlargement or adaptation. All the prostheses had 1 year of functional loading to simulate the long provisional phase. No screw loosening occurred at the first removal of the prostheses after implant osseointegration. No fracture occurred during the whole period. After 1 year, the mean marginal bone loss level was 0.37 ± 0.06 mm, while the implant survival rate was 98.18% (n=54/55), with just one implant failing but not affecting final prosthesis delivery to the patient. Conclusions Within the limitations of the present study, the authors concluded that digitally prefabricated provisional prostheses for full-arch immediate loading with s-CAIS could be a valid alternative treatment modality. Milled PMMA restorations proved to be durable enough during the long provisional phase, without prosthetic complications.

Immediate Occlusal Loading the Same Day or the Day After Implant Placement: Comparison of 2 Different Time Frames in Totally Edentulous Lower Jaws

2004 ◽  
Vol 30 (5) ◽  
pp. 307-313 ◽  
Author(s):  
Tiziano Testori ◽  
Massimo Del Fabbro ◽  
Fabio Galli ◽  
Luca Francetti ◽  
Silvio Taschieri ◽  
...  
Keyword(s):  
Success Rate ◽  
Immediate Loading ◽  
Endosseous Implants ◽  
Implant Placement ◽  
Lower Jaw ◽  
Crestal Bone Loss ◽  
Hybrid Prosthesis ◽  
Time Frames

Abstract Immediate loading of endosseous implants is becoming a widespread therapeutic procedure for the rehabilitation of patients with edentulous jaws. The purpose of this prospective clinical trial was to evaluate the long-term success rate of endosseous implants placed in the edentulous lower jaw and loaded on either the same day of surgery or the next day. Nineteen patients were enrolled in the study. Eleven patients, accounting for 64 implants, received their provisional prosthesis the same day of implant placement, and 8 patients, accounting for 52 implants, were rehabilitated the day after surgery. All patients were rehabilitated by a hybrid prosthesis supported by 5 to 6 Osseotite implants. Two implants failed in the group of patients who had their implants loaded the same day (96.9% success rate), whereas 1 implant failed in the other group (98.1% success rate). The overall implant success rate was 97.4%. All failures occurred within 2 months of function. No other complication was reported. The mean follow-up for this interim report was 37.8 ± 16.5 months (range 8–65 months). Crestal bone loss was similar to that reported for standard delayed loading protocols. The results of this study suggest that the rehabilitation of the edentulous lower jaw by an immediate occlusally loaded implant-supported hybrid prosthesis is equally successful when loading is applied the same day or the day after implant placement. Immediate loading with 5 to 6 implant-supported prostheses represents a viable alternative treatment to classic delayed loading protocols.

Clinical Application of Stereolithographic Surgical Guides for Implant Placement: Preliminary Results

2005 ◽  
Vol 76 (4) ◽  
pp. 503-507 ◽  
Author(s):  
Giovanni A.P. Di Giacomo ◽  
Patricia R. Cury ◽  
Ney Soares de Araujo ◽  
Wilson R. Sendyk ◽  
Claudio L. Sendyk
Keyword(s):  
Clinical Application ◽  
Preliminary Results ◽  
Implant Placement ◽  
Surgical Guides

scholarly journals On the Clinical Outcome of Different Single Implant Treatment Modalities

2020 ◽  
Author(s):  
◽  
Björn Gjelvold
Keyword(s):  
Treatment Outcome ◽  
Treatment Modalities ◽  
Immediate Loading ◽  
Implant Survival ◽  
Implant Position ◽  
Guided Surgery ◽  
Surgical Guides ◽  
Implant Treatment ◽  
Single Implant

Today there are several treatment techniques available to replace a missing tooth. Since the beginning of the 1990s, it has become increasingly common to treat individual tooth loss with dental implants. Important patient factors are survival, success, functionality, aesthetics, oral health and quality of life. The range of indications and possibilities for implant treatment has broadened compared to the originally proposed treatment indications. A variety of methods, components and materials are available today. Improvements of the implant surface have led to shorter healing periods, which has affected the overall treatment time. Methods for computer-assisted implant planning and surgical guides have been developed to improve treatment planning. Several techniques are involved in the manufacturing of implant-supported single crowns, from the traditional plaster models, wax, casting and porcelain veneering to 3D scanning, computer aided design and manufacturing. It is important that all these treatment modalities are evaluated in a systematic and scientific way to ensure that the treatment given is the best one possible according to the individual conditions that exist. The general aim of this project was to evaluate the treatment outcome between different treatment modalities for single dental implants. Study I aims to retrospectively evaluate implant survival. Patient reported outcome measures, marginal bone loss (MBL), clinical and esthetic outcomes following conventional single implant treatment. The aim of study II, a prospective randomized clinical study, was to compare the overall treatment outcome following immediate loading (IL) and delayed loading (DL) of single implants. In study III the aim was to in a vitro setting evaluate the deviation in final dental implant position after the use of surgical guides fabricated from two different desktop 3D printers using a digital workflow. For study IV the aim was to, in a non-randomized study, compare clinical and aesthetic outcomes between immediately loaded single implants placed with and without a fully guided-surgery procedure (DIL). In study I a total of 85 implants were examined after a mean follow-up time of 7.51 years. The 5-year implant survival rate was98.4% (95% CI: 96.3% - 100%), with a crown survival rate of91.8% (95% CI: 86.3%-97.3%). Overall mean MBL was -0.13 mm. Final and initial total Pink esthetic score (PES) were 9.61 and 11.49 (P<.001) Mean White esthetic score (WES) was 6.48 at final follow-up. Visual analog scale (VAS) score for soft tissue and implant-supported crown aesthetics were 73.5 and 82.1 (maximum score 100). A oral health impact profile-14 (OHIP-14) 14 score of 16.11 was observed at the final follow-up. Study II and IV found implant survival rates of 100%, 96% and 90.5 % for IL, DL and DIL, respectively, after 1-year. No statistically significant differences were found for MBL, PES, WES and OHIP-14after 1-year. Statistically significant lower papilla index scores were found for the IL. Overall statistically significant improvement inPES, WES and OHIP-14 were found over time. In the DIL group a moderate correlation between aesthetics and deviation in fixture position was found. For Study III a statistically significant difference between stereolithography and direct light processing (DLP) was found fordeviation at entry point (P = .023) and the vertical implant position(P = .009). Overall lower deviations were found for the guides from the DLP printer, with the exception of deviation in horizontal implant position.The results from these studies suggest that good clinical results can be achieved with different treatment modalities for single implants. Positive advantages with immediate loading and guided surgery is primarily seen in the early faces of the treatment procedure only. Care needs to be exerted with technically complicated treatment procedures as the effect on implant survival should not be underestimated. Further studies have to be performed to evaluate guided surgery and immediate loading to identify possible factors effecting survival.

scholarly journals Immediate Implants Loading by 4 Units Temporary Restoration: A Case Report

2019 ◽  
Vol 4 (8) ◽  
Keyword(s):  
Case Report ◽  
Soft Tissues ◽  
Long Term Results ◽  
Immediate Loading ◽  
Implant Placement ◽  
Immediate Implants ◽  
Immediate Implant ◽  
Dental Professionals

Immediate implant placement is the placement of dental implant in the extraction socket immediately after extraction with no healing of bone or soft tissues. The timing of implant placement has increased the debate, while patients have become persistent in their desire to be treated in an efficient and expedient manner. When seeking a solution, they wish for safe and effective treatment that can be performed in the shortest possible time and with as little pain and discomfort as possible. Dental professionals with their expertise are addressing patients request as much as possible. Immediate implant placement and loading are valuable techniques for the clinician to call upon, but their skill and experience, as well as case selection, are all crucial elements to ensure successful long-term results [1]. The placement of implants immediately in fresh sockets with immediate loading is a well known treatment modality, but the practitioner has to follow a very strict protocol. This case report describes the detailed procedures of immediate implant placement with immediate loading for 2 – implants supporting 4 – units’ provisional restorations with 5 years follow-up

scholarly journals In Vitro Comparison between Metal Sleeve-Free and Metal Sleeve-Incorporated 3D-Printed Computer-Assisted Implant Surgical Guides

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 615
Author(s):  
Kyung Chul Oh ◽  
June-Sung Shim ◽  
Ji-Man Park
Keyword(s):  
Computer Assisted ◽  
Cross Sectional ◽  
Implant Placement ◽  
Surgical Guides ◽  
Measured Weight ◽  
Before And After ◽  
3D Printed ◽  
Student’S T ◽  
The Right

The present study aims to compare the accuracy of metal sleeve-free 3D-printed computer-assisted implant surgical guides (MSF group) (n = 10) with metal sleeve-incorporated 3D-printed computer-assisted implant surgical guides (MSI group) (n = 10). Implants of diameter 4.0 mm and 5.0 mm were placed in the left second premolars and bilateral first molars, respectively, using a fully guided system. Closed-form sleeves were used in teeth on the left and open-form sleeves on the right. The weight differences of the surgical guides before and after implant placement, and angular deviations before and after implant placement were measured. Weight differences were compared with Student’s t-tests and angular deviations with Mann–Whitney tests. Cross-sectional views of the insert parts were observed with a scanning electron microscope. Preoperative and postoperative weight differences between the two groups were not statistically significant (p = 0.821). In terms of angular deviations, those along the mesiodistal direction for the left second premolars were significantly lower in the MSF group (p = 0.006). However, those along the mesiodistal direction for the bilateral molars and those along the buccolingual direction for all teeth were not significantly different (p > 0.05). 3D-printed implant surgical guides without metal sleeve inserts enable accurate implant placement without exhausting the guide holes, rendering them feasible for fully guided implant placement.

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