Long-term clinical performance of short 6-mm implants supporting single crowns in the posterior region: A 10-year cohort study
Raphaela Brambilla Bregagnol DDS, MSc
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
Private Practice, Porto Alegre, Brazil
Search for more papers by this authorMaria Paula de Lima Coltro DDS, MSc, PhD
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
Search for more papers by this authorEduardo Aydos Villarinho DDS, MSc, PhD
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
Search for more papers by this authorDiego Fernandes Triches DDS, MSc, PhD
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
Private Practice, Porto Alegre, Brazil
Search for more papers by this authorFernando Rizzo Alonso DDS, MSc, PhD
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
Private Practice, Jaú, Brazil
Search for more papers by this authorLuís André Mendonça Mezzomo DDS, MSc, PhD
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
School of Dentistry, Federal University of Santa Catarina, Florianópolis, Brazil
Search for more papers by this authorBianca Brandelli de Macedo DDS
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
Search for more papers by this authorEduardo Rolim Teixeira DDS, PhD
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
Search for more papers by this authorAlvaro Vigo MSc, PhD
Postgraduate Program in Epidemiology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
Search for more papers by this authorCorresponding Author
Rosemary Sadami Arai Shinkai DDS, MSc, PhD
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
School of Dentistry, University of São Paulo, São Paulo, Brazil
Correspondence
Rosemary Sadami Arai Shinkai, Department of Prosthodontics, School of Dentistry, University of São Paulo, Av. Lineu Prestes, 2227, São Paulo, SP, Brazil.
Email: [email protected]
Search for more papers by this authorRaphaela Brambilla Bregagnol DDS, MSc
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
Private Practice, Porto Alegre, Brazil
Search for more papers by this authorMaria Paula de Lima Coltro DDS, MSc, PhD
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
Search for more papers by this authorEduardo Aydos Villarinho DDS, MSc, PhD
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
Search for more papers by this authorDiego Fernandes Triches DDS, MSc, PhD
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
Private Practice, Porto Alegre, Brazil
Search for more papers by this authorFernando Rizzo Alonso DDS, MSc, PhD
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
Private Practice, Jaú, Brazil
Search for more papers by this authorLuís André Mendonça Mezzomo DDS, MSc, PhD
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
School of Dentistry, Federal University of Santa Catarina, Florianópolis, Brazil
Search for more papers by this authorBianca Brandelli de Macedo DDS
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
Search for more papers by this authorEduardo Rolim Teixeira DDS, PhD
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
Search for more papers by this authorAlvaro Vigo MSc, PhD
Postgraduate Program in Epidemiology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
Search for more papers by this authorCorresponding Author
Rosemary Sadami Arai Shinkai DDS, MSc, PhD
School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
School of Dentistry, University of São Paulo, São Paulo, Brazil
Correspondence
Rosemary Sadami Arai Shinkai, Department of Prosthodontics, School of Dentistry, University of São Paulo, Av. Lineu Prestes, 2227, São Paulo, SP, Brazil.
Email: [email protected]
Search for more papers by this authorAbstract
Introduction
Long-term clinical success of non-splinted, posterior, and short implants still is unclear. This prospective cohort study reports the 10-year follow-up of 6-mm implants supporting single crowns in the posterior region, and patient-reported outcomes.
Methods
Baseline sample comprised 20 patients treated with 46 screw-retained crowns supported by 6-mm implants with moderately rough implant surface. Participants were recalled for a 10-year clinical follow-up to assess survival rates, biologic and mechanic conditions, quality of life (OHIP-14), and treatment satisfaction. Data were collected with clinical-radiographic exams and analyzed using descriptive and inferential statistics.
Results
Fourteen patients with 35 implant-crown units were examined after 127.6 ± 11.8 months. For the entire cohort period, 7/46 implants were lost (survival estimate: 77.7% at 133 months), and mechanic complications occurred in 14/46 units (survival estimate: 66.4% at 116 months). In the Cox models, “maximum occlusal force” had a significant effect for implant loss (p = 0.038) and for prosthetic screw loosening (p = 0.038); “arch” and “bruxism” were not significant. Peri-implant bone loss was 0.4 ± 0.6 mm at 10 years. For peri-implant bone level, “crown-to-implant ratio” (p < 0.001) and “time” (p = 0.001) were significant. Bone levels differed from baseline to 12, 48, and 120 months. Satisfaction VAS was 94.0 ± 7.9 mm and OHIP-14 was 2.3 ± 2.2.
Conclusion
Single screw-retained crowns supported by 6-mm implants have an acceptable long-term clinical performance, with stable peri-implant bone levels after 10 years of function.
CONFLICT OF INTEREST STATEMENT
The authors declare no conflict of interest related to this study.
Open Research
DATA AVAILABILITY STATEMENT
The data that support the findings of this study are available on request from the corresponding author. The data are not publicly available due to privacy or ethical restrictions.
Supporting Information
| Filename | Description |
|---|---|
| cid13287-sup-0001-TableS1.docxWord 2007 document , 16.3 KB | Table S1: Baseline characteristics of patients (12/20) and implant-crown units (19/46) with implant loss and/or prosthetic screw loosening in the entire cohort 2010–2022). |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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