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Three-Year Retrospective Comparative Study between Implants with Same Body-Design but Different Crest Module Configurations

Authors :
Silvio Mario Meloni
Luca Melis
Erta Xhanari
Marco Tallarico
Giovanni Spano
Milena Pisano
Edoardo Baldoni
Gabriele Cervino
Antonio Tullio
Aurea Immacolata Lumbau
Source :
Dentistry Journal, Vol 8, Iss 4, p 135 (2020)
Publication Year :
2020
Publisher :
MDPI AG, 2020.

Abstract

Crest module can be defined as the portion of a two-piece implant designed to retain the prosthetic components and to allows the maintenance of the peri-implant tissues in the transition zone. Aim: To evaluate the three-year after loading clinical and radiographic data, collected from patients that received a prosthetic rehabilitation on conical connection implants with partial machined collar (PMC; CC Group) and same body-designed implants, with flat-to-flat connection and groovy neck design (FC Group). Materials and Methods: A retrospective chart review of previously collected data, including documents, radiographs, and pictures of patients who received at least one implant-supported restoration on NobelReplace CC PMC or NobelReplace Tapered Groovy implants was performed. Patients with at least three years of follow-up after final loading were considered for this study. Outcomes measures were implant and prosthesis failures, any biological or technical complications, marginal bone loss. Results: Eight-two patients (44 women, 38 men; average age 55.6) with 152 implants were selected and divided in two groups with 77 (CC group) and 75 (FC group), respectively. Three years after final loading, one implant in CC group failed (98.7% survival rate), while no implants failed in FC group (100% survival rate). One restoration failed in CC group (98.7% survival rate) with no restoration failing in the FC one (100% survival rate). Differences were not statistically significant (p = 1.0). Three years after final loading, mean marginal bone loss was 0.22 ± 0.06 mm (95% CI 0.2–0.24) in CC group and 0.62 ± 0.30 mm (95% CI 0.52–0.72) in FC group. The difference was statistically significant (0.40 ± 0.13 mm; 95% CI 0.3–0.5; p = 0.003). Conclusion: with the limitation of this retrospective comparative study, implants with conical connection and partial machined collar seem to achieve a trend of superior outcomes if compared with implants with flat connection and groovy collar design.

Details

Language :
English
ISSN :
23046767
Volume :
8
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Dentistry Journal
Publication Type :
Academic Journal
Accession number :
edsdoj.21395c949c2a46cd9f832579a1ee49e6
Document Type :
article
Full Text :
https://doi.org/10.3390/dj8040135