학술논문
Analysis of ultra-short implants with different angulations: a retrospective case-control study with 2 to 9 years of follow-up.
Document Type
Academic Journal
Author
Malchiodi L; Department of Surgery, Dentistry, Paediatrics and Gynaecology, University of Verona, Piazzale A. Scuro 10, 37134, Verona, Italy.; Fiorino A; Department of Neuroscience, Reproductive Sciences and Dentistry, Federico II University, Via S. Pansini 5, 80131, Naples, Italy. fiorinodr.antonino@gmail.com.; Merlino L; Private Practice, Trento, Italy.; Cucchi A; Private Practice, Bologna, Italy.; Zotti F; Department of Surgery, Dentistry, Paediatrics and Gynaecology, University of Verona, Piazzale A. Scuro 10, 37134, Verona, Italy.; Nocini PF; Department of Surgery, Dentistry, Paediatrics and Gynaecology, University of Verona, Piazzale A. Scuro 10, 37134, Verona, Italy.
Source
Publisher: Springer-Verlag Country of Publication: Germany NLM ID: 9707115 Publication Model: Electronic Cited Medium: Internet ISSN: 1436-3771 (Electronic) Linking ISSN: 14326981 NLM ISO Abbreviation: Clin Oral Investig
Subject
Language
English
Abstract
Objectives: Does the angulation of ultrashort implants influence the stability of the peri-implant bone? The present study aimed to evaluate the effectiveness of non-axial ultrashort implants after 2 to 9 years of follow-up in resorbed alveolar ridges.
Materials and Methods: All partially edentulous patients with ultrashort implants (< 6 mm) used in the posterior region of an atrophic mandible or maxilla, to support partial dentures in conjunction with standard implants, were included in this study. Peri-implant bone loss, success and survival rates, crestal bone levels, crown-to-implant ratio and implant angulation were measured for each implant. Implants were divided into two groups: straight implants with angulation < 17° (control group) and tilted implants with angulation > 17° (test group). Statistical analysis was used to find any significant differences between the two study groups and to investigate significant linear correlations among all the variables (p = 0.05).
Results: A total of 42 ultrashort implants with a mean of 4 years of follow-up were included: 20 ultrashort axially loaded implants and 22 tilted implants. Mean crestal bone levels from baseline loading to maximum follow-up did not reveal statistical differences in regard to PBL; mean success and survival rates were 100% in all groups.
Conclusions: PBL, success and survival rates of axial ultrashort implants and tilted ultrashort implants are comparable to those of conventional implants.
Clinical Relevance: This retrospective study revealed that ultrashort implants, even when placed with an angulation > 17°, can safely be used to support partial fixed prostheses. Further prospective clinical studies with larger samples and prospective design are needed to confirm these findings.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Materials and Methods: All partially edentulous patients with ultrashort implants (< 6 mm) used in the posterior region of an atrophic mandible or maxilla, to support partial dentures in conjunction with standard implants, were included in this study. Peri-implant bone loss, success and survival rates, crestal bone levels, crown-to-implant ratio and implant angulation were measured for each implant. Implants were divided into two groups: straight implants with angulation < 17° (control group) and tilted implants with angulation > 17° (test group). Statistical analysis was used to find any significant differences between the two study groups and to investigate significant linear correlations among all the variables (p = 0.05).
Results: A total of 42 ultrashort implants with a mean of 4 years of follow-up were included: 20 ultrashort axially loaded implants and 22 tilted implants. Mean crestal bone levels from baseline loading to maximum follow-up did not reveal statistical differences in regard to PBL; mean success and survival rates were 100% in all groups.
Conclusions: PBL, success and survival rates of axial ultrashort implants and tilted ultrashort implants are comparable to those of conventional implants.
Clinical Relevance: This retrospective study revealed that ultrashort implants, even when placed with an angulation > 17°, can safely be used to support partial fixed prostheses. Further prospective clinical studies with larger samples and prospective design are needed to confirm these findings.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)