TY - JOUR
T1 - Flaplessly placed 2.4-mm mini-implants for maxillary overdentures
T2 - a prospective multicentre clinical cohort study
AU - Van Doorne, L.
AU - De Kock, L.
AU - De Moor, A.
AU - Shtino, R.
AU - Bronkhorst, E.
AU - Meijer, G.
AU - De Bruyn, H.
PY - 2020/3/1
Y1 - 2020/3/1
N2 - Studies on flaplessly placed, one-piece mini dental implants (MDIs) supporting overdentures in the maxilla are scarce. This prospective multicenter cohort study evaluated the outcomes (over 2 years) of five to six MDIs placed in the maxilla for overdentures. Study patients were ≥50 years old, with an edentulous maxilla and dentate/fixed prosthesis in the mandible. Dentures were provisionalized with the final connection at 6 months. Implant/prosthetic survival was evaluated, and postoperative discomfort and patient satisfaction were assessed (rating scale). Of 185 MDIs placed in 31 patients, 32 failed in 16 patients (17.3%); 22/83 in female patients and 10/102 in male patients. Kaplan–Meier analysis showed survival percentages of 86.3% (6 months), 84.0% (1 year), and 82.3% (2 years). Two patients lost five or six MDIs resulting in two prosthetic failures (6.5%). Implant loss was significantly affected by sex, but not by smoking or location. The worst treatment combination was a torque value >25 N·cm with an antagonist implant overdenture. The mean pain score was 4.1 ± 2.8 on day 1 and 1.1 ± 1.7 on day 7. The mean final satisfaction score was 8.6 ± 1.7. The majority (96%) of the patients would recommend this treatment. Despite higher MDI failure in the maxilla compared to the mandible, prosthetic survival was acceptable and patient satisfaction was high, suggesting this to be a valuable treatment alternative.
AB - Studies on flaplessly placed, one-piece mini dental implants (MDIs) supporting overdentures in the maxilla are scarce. This prospective multicenter cohort study evaluated the outcomes (over 2 years) of five to six MDIs placed in the maxilla for overdentures. Study patients were ≥50 years old, with an edentulous maxilla and dentate/fixed prosthesis in the mandible. Dentures were provisionalized with the final connection at 6 months. Implant/prosthetic survival was evaluated, and postoperative discomfort and patient satisfaction were assessed (rating scale). Of 185 MDIs placed in 31 patients, 32 failed in 16 patients (17.3%); 22/83 in female patients and 10/102 in male patients. Kaplan–Meier analysis showed survival percentages of 86.3% (6 months), 84.0% (1 year), and 82.3% (2 years). Two patients lost five or six MDIs resulting in two prosthetic failures (6.5%). Implant loss was significantly affected by sex, but not by smoking or location. The worst treatment combination was a torque value >25 N·cm with an antagonist implant overdenture. The mean pain score was 4.1 ± 2.8 on day 1 and 1.1 ± 1.7 on day 7. The mean final satisfaction score was 8.6 ± 1.7. The majority (96%) of the patients would recommend this treatment. Despite higher MDI failure in the maxilla compared to the mandible, prosthetic survival was acceptable and patient satisfaction was high, suggesting this to be a valuable treatment alternative.
UR - http://www.scopus.com/inward/record.url?scp=85071883323&partnerID=8YFLogxK
U2 - 10.1016/j.ijom.2019.08.015
DO - 10.1016/j.ijom.2019.08.015
M3 - Article
SN - 0901-5027
VL - 49
SP - 384
EP - 391
JO - International Journal of Oral and Maxillofacial Surgery
JF - International Journal of Oral and Maxillofacial Surgery
IS - 3
ER -