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A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Applied Dentistry and Oral Sciences".

Deadline for manuscript submissions: closed (30 July 2021) | Viewed by 15967

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Prof. Dr. Norina Consuela Forna

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Faculty of Dental Medicine, U.M.F., “Grigore T. Popa”, University Street No. 16, 700115 Iasi, Romania
Interests: implantology; prosthetics dentistry; oral surgery; digital dentistry; 3D navigation systems; haptic robotic technology
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Dear Colleagues,

In the last two decades, implant-prosthetic therapy has seen a considerable growth due to the development of new dental implant systems and minimally invasive implant techniques, the improvement of materials and techniques used in the rehabilitation of the implant sites, the use of the digital techniques used in the virtual planning of the implant-prosthetic therapy, as well as the emergence of 3D navigation systems and haptic robotic technology used to assist the surgical implant procedures. These changes have expanded the range of the possibilities to plan implant procedures and prosthetic restoration design, to execute surgical implant procedures and to select restorative choices for the therapy of the edentulous patients by implant-supported fixed and removable dentures.

This Special Issue on “New Trends in Implant-Prosthetic Therapy” in Applied Sciences encourages high quality original research studies, clinical articles, and reviews focused on the topic of the current and future trends in implant-prosthetic therapy.

Prof. Dr. Norina Consuela Forna
Guest Editor

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Keywords

minimally invasive implant techniques
bioactive implants
implant bone addition techniques
immediate and early loading
implants osseointegration
peri-implantitis treatment
digital implant planning
3D navigation systems
FEA analysis

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Published Papers (4 papers)

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13 pages, 3750 KiB

Open AccessArticle

Study of Immediate Implants Placed in Mandibular Alveolar Bone Reconstructed with Screw-Guided Bone Regeneration Technique: A 24-Months Follow-Up

by Bianca Török, Roland Török, David M. Dohan Ehrenfest, Doriana Agop-Forna, Cristina Dascălu and Norina Consuela Forna

Appl. Sci. 2021, 11(13), 6054; https://doi.org/10.3390/app11136054 - 29 Jun 2021

Cited by 3 | Viewed by 2319

Abstract

Aim: Study aimed to test whether implants inserted in posterior mandible sites augmented with screw-guided bone regeneration (S-GBR) technique differ from implants placed in non-grafted sites regarding the success and survival rate. Materials and Methods: 20 edentulous patients (mean age 59.45 ± 15.220) were divided in a test group (S-GBR) (immediate implants placed simultaneously with grafting procedures) and control group (implants placed in naturally healed sites). Primary outcomes (implants success; implants survival) and secondary outcomes (clinical parameters of soft tissues: mPI; mGI; probing depth; keratinized mucosa; marginal-bone-level) were evaluated at 24-months follow-up. Results: Plaque levels were higher (p = 0.046) in S-GBR group (0.97 ± 0.882 mm) when compared with control (0.66 ± 0.695 mm). Keratinized mucosa width was higher in S-GBR group (4.13 ± 1.033 mm) than control (3.34 ± 0.821 mm) (p = 0.000) Probing depth (PD) width was higher in S-GBR group (3.50 ± 1.372 mm) than control (2.56 ± 1.332 mm) (p = 0.000). mGI was higher among implants placed in S-GBR group (0.90 ± 1.020 mm) than control (0.56 ± 0.794 mm) (p = 0.061). The difference between the average bone loss (MBL) for implants placed in grafted sites (Group S-GBR: 2.20 ± 1.867 mm) and for those placed in naturally healed sites (Group B: 1.09 ± 1.678 mm) was statistically significant (p = 0.000). The overall implant success rate after 24-month follow-up was 76.7% in S-GBR group and 90.6% in control group (p = 0.001). The survival rate after 24-month follow-up was 86.7% in S-GBR group and 93.8% in control group (p = 0.182). The reconstruction of the alveolar bone using S-GBR technique and immediate implant placement is a valid guided bone regeneration strategy for mandibular alveolar bone with severe horizontal resorption. The choice of S-GBR technique should be based on specific indications as implants placed in grafted sites recorded worse marginal success rate, survival rate and bone resorption than those placed in non-grafted sites. Full article

(This article belongs to the Special Issue New Trends in Implant-Prosthetic Therapy)

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7 pages, 1300 KiB

Open AccessArticle

A Novel, Minimally Invasive Method to Retrieve Failed Dental Implants in Elderly Patients

by Yerko Leighton, Javier Miranda, Raphael Freitas de Souza, Benjamin Weber and Eduardo Borie

Appl. Sci. 2021, 11(6), 2766; https://doi.org/10.3390/app11062766 - 19 Mar 2021

Cited by 2 | Viewed by 2583

Abstract

This practice-based study presents the clinical outcomes of a minimally invasive method for retrieving failed dental implants from elderly patients. Traditional removal methods for failed dental implants include trephination and other invasive procedures. That can be a special concern for the elderly, since aging exacerbates oral surgery-related morbidity and anxiety. This retrospective cohort study gathers data from 150 patients seen in a private clinic. Their implants (n = 199) failed due to biological, mechanical, or iatrogenic causes, and were removed as part of their treatment plan. Collected data included: (1) implant location (maxilla/mandible, anterior/posterior region), (2) reasons for implant retrieval, (3) connection type, (4) removal torque, and (5) operatory procedure—flapless and using a counter-torque removal kit, whenever possible. Flapless/minimally invasive retrieval was successful for 193 implants (97%). The remaining six implants demanded trephination (open-flap). The most common reasons for implant retrieval (81%) involved biological aspects, whereas iatrogenic (12%) and biomechanical (7%) reasons were less common. The surgical technique used was not associated to connection types or removal torque. Authors conclude that a counter-torque ratchet system is a minimally invasive technique with a high success rate in retrieving implants from elderly patients. Present findings support its use as a first-line approach for implant retrieval in that population. Full article

(This article belongs to the Special Issue New Trends in Implant-Prosthetic Therapy)

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14 pages, 2199 KiB

Open AccessArticle

Factors Influencing Primary and Secondary Implant Stability—A Retrospective Cohort Study with 582 Implants in 272 Patients

by Andreas Vollmer, Babak Saravi, Gernot Lang, Nicolai Adolphs, Derek Hazard, Verena Giers and Peter Stoll

Appl. Sci. 2020, 10(22), 8084; https://doi.org/10.3390/app10228084 - 15 Nov 2020

Cited by 27 | Viewed by 8143

Abstract

The success rate of dental implants depends on primary and secondary stability. We investigate predictive factors for future risk stratification models. We retrospectively analyze 272 patients with a total of 582 implants. Implant stability is measured with resonance frequency analysis and evaluated based on the implant stability quotient (ISQ). A linear regression model with regression coefficients (reg. coeff.) and its 95% confidence interval (95% CI) is applied to assess predictive factors for implant stability. Implant diameter (reg. coeff.: 3.28; 95% CI: 1.89–4.66, p < 0.001), implant length (reg. coeff.: 0.67, 95% CI: 0.26–1.08, p < 0.001), and implant localization (maxillary vs. mandibular, reg. coeff.: −7.45, 95% CI: −8.70–(−6.20), p < 0.001) are significant prognostic factors for primary implant stability. An increase in ISQ between insertion and exposure is significantly correlated with healing time (reg. coeff.: 0.11, 95% CI: 0.04–0.19). Patients with maxillary implants have lower ISQ at insertion but show a higher increase in ISQ after insertion than patients with mandibular implants. We observe positive associations between primary implant stability and implant diameter, implant length, and localization (mandibular vs. maxillary). An increase in implant stability between insertion and exposure is significantly correlated with healing time and is higher for maxillary implants. These predictive factors should be further evaluated in prospective cohort studies to develop future preoperative risk-stratification models. Full article

(This article belongs to the Special Issue New Trends in Implant-Prosthetic Therapy)

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7 pages, 1540 KiB

Open AccessCase Report

Strategic Use of CAD-CAM Interim Restoration for the Recovery of the Vertical Dimension of Occlusion in the Posterior Partially Edentulous Jaw

by Hai Yen Mai, Jae-Min Seo, Jae-Kwang Jung and Du-Hyeong Lee

Appl. Sci. 2020, 10(21), 7735; https://doi.org/10.3390/app10217735 - 31 Oct 2020

Cited by 2 | Viewed by 2142

Abstract

Occlusal contact loss occasionally occurs following the placement of implant-supported fixed dental prostheses in the posterior region. This complication is caused by the change in the vertical dimension of occlusion after the recovery of mastication. The change is probably related to the prosthesis sinking phenomenon and previous mandibular dislocation. The use of interim prostheses could help re-establish the vertical dimension of occlusion. The definitive prostheses can then be accurately fabricated using digital techniques in the newly established vertical dimension. In this case report, we introduce a protocol incorporating a computer-aided design and computer-aided manufacturing (CAD-CAM) interim prosthesis and digital techniques to minimize the occurrence of unexpected initial occlusal changes in the prosthetic treatment of implant-supported prostheses in the posterior region. Full article

(This article belongs to the Special Issue New Trends in Implant-Prosthetic Therapy)

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