Unbound MEDLINE

Does implant staging choice affect crestal bone loss?

Abstract

PURPOSE
The purpose of the present study was to compare the crestal bone loss around implants placed according to either a 1-stage or 2-stage implant installation procedure using a digital subtraction radiography technique.
MATERIALS AND METHODS
In the present randomized clinical trial, screw-shaped tapered implants were inserted in the posterior mandible of patients needing fixed partial dentures. In each edentulous area, according to the randomization table, 1 implant was inserted using a 1-stage procedure (group 1) and 1 was placed using a 2-stage approach (group 2). The implants were temporized with the relined denture after 2 weeks. All implants were functionally loaded with fixed partial dentures after 3 months. Crestal bone loss (primary outcome variable) was measured using a digital subtraction radiography technique. Standardized radiovisiographs were taken after implant insertion, after fixed partial denture installation (3 months after surgery), and after 6 and 12 months of functional loading. The data were analyzed using the Wilcoxon signed ranks test (α = 0.05).
RESULTS
Eleven patients (mean age 46.9 years, 3 women and 8 men) were included in the study. A total of 34 implants were inserted, 17 using a 1-stage protocol and 17 using a 2-stage protocol. Three months after implant placement, the 2-stage implants showed significantly more crestal bone loss (0.65 ± 0.71 mm) than the 1-stage implants (0.41 ± 0.53 mm; P = .02). However, after 6 and 12 months of functional loading, both groups showed comparable changes in bone level (P > .05).
CONCLUSIONS
No differences were found between 1-stage and 2-stage implant placement in crestal bone loss after 1 year of functional loading.

Links

  • Publisher Full Text
  • Authors

    Siadat H, Panjnoosh M, Alikhasi M, Alihoseini M, Bassir SH, Rokn AR

    Source

    Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons 70:2 2012 Feb pg 307-13

    MeSH

    Adult
    Aged
    Alveolar Bone Loss
    Alveolar Process
    Dental Implant-Abutment Design
    Dental Implantation, Endosseous
    Dental Prosthesis Design
    Dental Prosthesis, Implant-Supported
    Denture, Partial, Fixed
    Female
    Follow-Up Studies
    Humans
    Immediate Dental Implant Loading
    Jaw, Edentulous, Partially
    Male
    Mandible
    Middle Aged
    Radiography, Dental, Digital
    Subtraction Technique
    Surgical Flaps
    Treatment Outcome
    Young Adult

    Pub Type(s)

    Comparative Study
    Journal Article
    Randomized Controlled Trial
    Research Support, Non-U.S. Gov't

    Language

    eng

    PubMed ID

    22169672