Clinical evaluation of marginal bone loss and stability in two types of submerged dental implants.
Int J Oral Maxillofac Implants
; 28(3): 815-23, 2013.
Article
em En
| MEDLINE
| ID: mdl-23748314
ABSTRACT
PURPOSE:
The aim of this prospective clinical trial was to compare the three-dimensional marginal bone level, implant stability, and peri-implant health of two types of submerged dental implants that were restored with matching or platform-switched abutments. MATERIALS ANDMETHODS:
Twenty-five subjects were recruited (test group 43 implants with internal conical connection and back-tapered collar carrying a platform-switched abutment; control group 50 implants carrying a matched-platform abutment). Implant uncovering and conventional loading were performed after 3 months of healing, and the total observation time was 15 months. Marginal bone levels, resonance frequency analysis, insertion torque, and peri-implant health indices were recorded and analyzed statistically.RESULTS:
The cumulative implant survival rate was 100%. At the second-stage surgery, bone levels were similar between groups. One year after loading, mean crestal bone loss was 0.35 ± 0.13 mm for test implants and 0.83 ± 0.16 mm for control implants, a significant difference. Primary stability was significantly higher in the test group than in the control group, but this difference disappeared after 3 months of healing prior to loading. Between-group differences for peri-implant health indices were negligible.CONCLUSIONS:
Both implant systems had the same survival rates. Implants with a built-in platform switch and conical connection with back-tapered collar design achieved higher primary stability at insertion and less bone resorption after 15 months.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Implantes Dentários
/
Perda do Osso Alveolar
/
Implantação Dentária Endóssea
/
Projeto do Implante Dentário-Pivô
Tipo de estudo:
Clinical_trials
/
Observational_studies
Limite:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Int J Oral Maxillofac Implants
Ano de publicação:
2013
Tipo de documento:
Article