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© 2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Background: Immediate post-extraction dental implants are increasingly popular, but ensuring primary stability and managing peri-implant tissues remain challenging. Implant macro-design significantly impacts stability and osseointegration. This study used Cone-beam Computed Tomography (CBCT) to evaluate changes in alveolar bone following immediate placement of two implant designs, System 2P and Dura-Vit 3P, which feature semi-conical microgeometry and apical self-tapping portions for improved stability and bone regeneration. Methods: With a 1:1 allocation ratio, the current investigation was a two-arm parallel group randomized clinical trial. Patients qualified if they required immediate dental replacements with adequate buccal bone support. Two types of implants were placed: System 2P (cylindrical shape) and Dura-Vit 3P (more conical shape, with a particular architecture of threads). Following the intervention, CBCT was performed both immediately (T1) and six months later (T2). Measurements of CBCT horizontal bone level at apical, medial, and bevel height on the palatal/lingual and vestibular sides as well as the buccal vertical gap were the primary results. Complications, implant stability quotient (ISQ), and torque insertion were evaluated. The Mann–Whitney test was used to determine time-based differences within each group, while the Wilcoxon test was used to estimate differences between groups. The impact of baseline marginal gap dimension and gingival biotype was estimated using multiple regressions. Results: Thirty patients were recruited and randomized to treatments, with two lost to follow-up. One System 2P implant failed and two patients of the Dura-Vit 3P group dropped out. At T1, the Dura-Vit 3P group exhibited a lower mean insertion torque and a higher ISQ than the System 2P group. Furthermore, the Dura-Vit 3P group showed lower bone reduction compared to System 2P at horizontal and vertical measurements with significant differences for the vestibular and palatal base and medial level (p-values < 0.05). Regression models indicated a positive effect of thick biotypes on gap filling and dimensional bone reduction. No complications were observed in both groups. Conclusions: The Dura-Vit 3P implant exhibits high primary stability when inserted in post-extraction sites. Furthermore, this kind of implant stimulates higher bone stability on both the palatal and buccal side when compared to the System 2P implant. The present findings support the evidence that the macro-design of the Dura-Vit 3P implant promotes increased primary stability and reduces bone loss.

Details

Title
Bone Remodeling Around Implants with Different Macro-Design Placed in Post-Extraction Sockets: A Cone-Beam Computed Tomography (CBCT) Randomized Controlled Clinical Trial (RCT)
Author
Grassi, Roberta 1 ; Fábio França Vieira e Silva 2 ; Musella, Gennaro 3   VIAFID ORCID Logo  ; Pettini, Francesco 4 ; Gisela Cristina Vianna Camolesi 5   VIAFID ORCID Logo  ; Coppini, Martina 6   VIAFID ORCID Logo  ; Cantore, Stefania 7   VIAFID ORCID Logo 

 Higher Education Institution, Malta ICOM Educational, GZR 1075 Il-Gzira, Malta 
 Oral Medicine, Oral Surgery and Implantology Unit (MedOralRes), Faculty of Medicine and Dentistry, University of Santiago de Compostela, San Francisco Street, s/n, 15782 Santiago de Compostela, Spain; [email protected] (F.F.V.e.S.); [email protected] (G.C.V.C.); Health Research Institute of Santiago de Compostela (FIDIS), ORALRES Group, Santiago de Compostela University Clinical Hospital, University of Santiago de Compostela, Choupana Street, s/n, 15706 Santiago de Compostela, Spain; Department of Precision Medicine, University of Campania Luigi Vanvitelli, Via L. De Crecchio, 7, 80138 Naples, Italy 
 Department of Clinical and Experimental Medicine, University of Foggia, 71100 Foggia, Italy 
 Department of Interdisciplinary Medicine, University of Bari Aldo Moro, Via Piazza G, Cesare, 11, 70123 Bari, Italy; [email protected] 
 Oral Medicine, Oral Surgery and Implantology Unit (MedOralRes), Faculty of Medicine and Dentistry, University of Santiago de Compostela, San Francisco Street, s/n, 15782 Santiago de Compostela, Spain; [email protected] (F.F.V.e.S.); [email protected] (G.C.V.C.); Health Research Institute of Santiago de Compostela (FIDIS), ORALRES Group, Santiago de Compostela University Clinical Hospital, University of Santiago de Compostela, Choupana Street, s/n, 15706 Santiago de Compostela, Spain 
 Unit of Oral Medicine and Dentistry for Frail Patients, Department of Rehabilitation, Fragility and Continuity of Care, University Hospital Palermo, 90134 Palermo, Italy; [email protected] 
 Department of Precision Medicine, University of Campania Luigi Vanvitelli, Via L. De Crecchio, 7, 80138 Naples, Italy; Regional Dental Community Service “Sorriso& Benessere—Ricerca e Clinica”, Azienda Sanitaria Locale of Bari-ASL/BA, 70129 Bari, Italy 
First page
78
Publication year
2025
Publication date
2025
Publisher
MDPI AG
e-ISSN
23046767
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3170873309
Copyright
© 2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.