title: Immediate loading short implants inserted on low bone quantity for the rehabilitation of the edentulous maxilla using an All-on-4 design.
abstract: More studies evaluating the outcome of short-length dental implants in immediate loading are needed. To evaluate the use of short-length tapered implants in immediate loading for complete edentulous maxillae rehabilitations using an All-on-4 design. This retrospective clinical study included a cohort of 43 patients with 172 implants (74 short-length implants) inserted in low bone quantity. The patients were followed between 4 months and 6 years (average = 3 years). Outcome measures were implant survival, marginal bone remodelling, biological and mechanical complications. Two patients with four short-length implants were lost to follow-up during the first year. Three short and three long implants failed in four patients, rendering an overall cumulative survival rate implant and patient level, respectively, of 95.7% and 95.1% for short implants, 100% for regular implants and 96.6% and 95.2% for long implants. The average marginal bone remodelling at 1 and 3 years was 0.97 and 1.25 mm for the short implants, 0.82 and 0.87 mm for regular implants and 0.87 and 0.98 mm for long implants. Three patients presented 4 short-length implants with peri-implant pockets (3 implants in 2 patients were pseudo-pockets). Mechanical complications were registered in 13 patients (7 provisional prostheses fractures and 6 abutment screw loosening). All complications were treated successfully. Within the limitations of this clinical study, the short-term outcome of fixed prosthetic complete edentulous maxillae rehabilitations supported by short-length implants inserted in low bone quantity areas is viable. Long-term clinical studies are necessary for evaluating the outcome of these implants.
authors.affiliation: Oral Surgery Department, Maló Clinic, Lisbon, Portugal.
authors.forename: P
authors.initials: P
authors.lastname: Maló
authors.affiliation: Research and Development Department, Maló Clinic, Lisbon, Portugal.
authors.forename: M A
authors.identifier: http://orcid.org/0000-0002-7084-8301
authors.initials: MA
authors.lastname: de Araújo Nobre
authors.affiliation: Research and Development Department, Maló Clinic, Lisbon, Portugal.
authors.forename: A V
authors.initials: AV
authors.lastname: Lopes
authors.affiliation: Prosthodontics Department, Maló Clinic, Lisbon, Portugal.
authors.forename: R
authors.initials: R
authors.lastname: Rodrigues
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015921:Dental Implants; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D005260:Female; D006801:Humans; D057893:Immediate Dental Implant Loading; D007575:Jaw, Edentulous / Q000534:rehabilitation*; D008297:Male; D008437:Maxilla / Q000503:physiopathology / Q000601:surgery; D008875:Middle Aged; D012189:Retrospective Studies; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants
keywords: alveolar bone loss; dental implants; dental prosthesis; edentulous maxilla; humans; jaw; treatment outcome