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Immediate vs early loading of 6.6 mm flapless-placed single implants: 9 years after-loading report of a split-mouth randomised controlled trial

Artikel i vetenskaplig tidskrift
Författare G. Cannizzaro
P. Felice
A. Trullenque-Eriksson
M. Lazzarini
E. Velasco-Ortega
Marco Esposito
Publicerad i European Journal of Oral Implantology
Volym 11
Nummer/häfte 2
Sidor 163-173
ISSN 1756-2406
Publiceringsår 2018
Publicerad vid Institutionen för kliniska vetenskaper, Avdelningen för biomaterialvetenskap
Sidor 163-173
Språk en
Ämnesord dental implants, early loading, flapless, immediate loading, short implants, hydroxyapatite-coated implants., partially edentulous patients, longer, implants, bone augmentation, arch prostheses, dental implants, wide, implants, sinus lift, surgery, rehabilitation, Dentistry, Oral Surgery & Medicine
Ämneskategorier Odontologi

Sammanfattning

Purpose: To evaluate the long-term effectiveness of 6.6 mm long flapless-placed single implants loaded immediately or early loaded at 6 weeks. Materials and methods: Thirty patients each received two single Nanotite External Hex Biomet 3i implants, which were then randomly allocated to be either immediately or early loaded, according to a split-mouth design. Implants had to be inserted with a torque superior to 40 Ncm. Provisional crowns were put in slight occlusal contact and replaced by definitive crowns 3 months after loading. Patients were followed for 9 years after loading. Outcome measures were implant failures, biological and biomechanical complications, peri-implant marginal bone level changes and patient preference. Results: A total of 29 implants were immediately loaded, while 31 were early loaded. Nine years after loading, three patients dropped out. One implant failed in each group within 2 months after loading. One patient asked for the immediately loaded crown to be remade for aesthetic reasons and then again to have both metal-ceramic crowns replaced by full ceramic crowns. Another patient had his immediately loaded crown remade after repeated debonding. Six patients from each group experienced complications, the difference being not statistically significant (difference of proportions = 0.00; 95% CI -0.20 to 0.20, P = 1.000). Peri-implant bone loss was 0.60 mm for patients with immediately loaded implants and 0.46 mm for early loaded ones, which was not significantly different (mean difference = 0.14 mm, 95% CI -0.13 to 0.41, P = 0.283). All but one patient had no preference for either procedure after 9 years. Conclusions: Flapless-placed 6.6 mm long single implants can be immediately loaded and remain successful up to 9 years after loading.

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